Astronomy and Astrophysics, Earth and Planetary Sciences, Aerospace Engineering, Multidisciplinary
82
Scopus Publications
Scopus Publications
Detection of binary companions below the diffraction limit with lucky imaging M. A. Cagigas, R. Clavero, M. P. Cagigal, D. Nespral, A. A. Djupvik, D. Jones, P. J. Valle, V. F. Canales, E. Soria, R. López, O. Zamora, Á. Oscoz, J. Marco Astronomy and Astrophysics, 2025 Context. Binary stars are invaluable tools that can be used to precisely measure the fundamental properties of stars, to test stellar models, and further our understanding of stellar evolution. Stellar binarity may also play an important role in the formation and evolution of exoplanetary systems. Aims. We provide a technique for resolving intermediate-separation binaries stars with medium-sized telescopes (i.e. diameter less than or equal to 2.5 metres) at wavelengths around 825 nm in the super-resolution range (i.e. below the limit defined by the Rayleigh criterion). Methods. We combined two well-known algorithms that have been applied to reduce the halo in lucky imaging observations: COvariancE of Lucky Images and the Lucky Imaging Speckle Suppression Algorithm. We reviewed the fundamentals of both algorithms and describe a new technique called Lucky Imaging Super resolution Technique (LIST), which is optimized for peak highlighting within the first ring of the Airy pattern. To validate the technique, we carried out several observing campaigns of well-known binary stars with the FastCam instrument (FC) on the 1.52 m Carlos Sánchez Telescope (TCS) and 2.56 m Nordic Optical Telescope (NOT), both located at the Observatorios de Canarias (OCAN). Results. The projected angular separation between objects was resolved by applying LIST to FC data taken with TCS and NOT, with a result below 0.15″. It can go down to approximately 0.05″, given the limitations of the detector plate scale. This is, to our knowledge, the first time that binary companions with such small angular separations have been detected using only lucky imaging at optical wavelengths. The average accuracy achieved for the angular separation measurement is 16 ± 2 mas with NOT and is 20 ± 1 mas with TCS. The average accuracy obtained for the position angle measurement is 9.5° ± 0.3° for NOT and 11° ± 2° for TCS. We also made an attempt to measure the relative brightnesses of the binary components, obtaining results that are compatible with literature measurements. Using this comparison, the ∆m uncertainty obtained was 0.1 mag for NOT and 0.48 mag for TCS, although it should be noted that the measurements have been taken using slightly different filters. Conclusions. Lucky imaging, in combination with speckle suppression and a covariance analysis, can allow the resolution of multiple point sources below the diffraction limit of 2-m class telescopes. However, it should be noted that measurements in the super-resolution regime are less sensitive than those above the first Airy ring.
ALISIO-1 MISSION: Bridging Space and Earth with Next-Generation CubeSat for Optical Communications and Environmental Monitoring Xana Delpueyo, Jorge Socas, Juan Francisco Hernández, Jordan Ortega, Felix Gracia Témich, Hugo García-Vázquez, Yessica Calatayud, Luis Fernando Rodriguez Ramos, Jose Alonso Burgal, Carlos Colodro-Condel, Pablo de Chaves, Luis Guirado Fuentes, Jose Luis Martinez Rodriguez, Gara Ramos, David Rodríguez Muñoz, Jose Carlos San Luis, Ignacio Sidrach-Cardona, Samuel Sordo, Alfonso Ynigo, Alex Oscoz Proceedings of SPIE the International Society for Optical Engineering, 2025
Apparent correlation between extrinsic and intrinsic flux variations in the first gravitationally lensed quasar L J Goicoechea, V N Shalyapin, A Oscoz Monthly Notices of the Royal Astronomical Society, 2024 To better understand which sources contribute to optical passband fluxes of Q0957+561, we present and analyse light curves of the doubly imaged gravitationally lensed quasar from its discovery to 2023. After an early microlensing event, the difference light curves (describing delay-corrected flux ratios between the two quasar images) only show prominent microlensing gradients over the last 17 yr. In addition to these long time-scale gradients in the gr bands, we detect short time-scale, extrinsically induced differential variations that are highly correlated with the short time-scale intrinsic variability of the quasar in those bands. Both the accretion disc and the broad emission-line region (BELR) contribute to optical passband fluxes, and we also show that realistic contributions of the BELR account for the observed correlations in the gr bands. We would like to highlight that the BELR sources of optical passband fluxes of Q0957+561 should be taken into account when measuring accretion-disc source sizes from microlensing simulations.
Adaptive Optics system-box for the QKD transportable ground station at IAC 7th Adaptive Optics for Extremely Large Telescopes Conference Ao4elt7 2023, 2023
Transportable Optical Ground Station for QKD using Adaptive Optics with a Plenoptic Wavefront Sensor Jorge Socas, Joan Torras, Luis Fernando Rodriguez, Iciar Montilla, Alex Oscoz, Angel Alonso, Jaime Ruiz, Elena Reyes, Guillermo Fuentes, Carlos Marrero, Noelia Martinez Proceedings of SPIE the International Society for Optical Engineering, 2023 The Institute of Astrophysics of the Canary Islands, IAC, and specifically its technology transfer division IACTEC, has a long history of participation in free-space optical communications projects (FSOC). These activities are nowadays being pushed forward to achieve practical applications of quantum key distribution, leveraging its facilities and experience in the FSOC field and its “know-how” in Adaptive Optics. A Free-Space Communications Laboratory has been installed at IACTEC clean rooms, intended to be used as a permanent facility where specific equipment for optical communications, quantum and classical, is available to our research and development group and its collaborators. Single photon detectors and sources, including both avalanche and superconducting nanowires(SNSPD), 16 GHz oscilloscope, FPGA-based time to digital converter, and many optical and electronic general-purpose building blocks are examples of the items existing at the facility, which should become a complement of the existing OGS telescope located at the Observatorio del Teide. The main objective of the group is to make extensive use of the well-known adaptive optics techniques for the compensation of the aberrations introduced in the communications channel by the atmospheric turbulence. Specifically, a Transportable Optical Ground Station (TOGS) with adaptive optics will be presented, designed with the aim to provide efficient transmission of quantum keys between islands or from a LEO satellite. The efficiency of coupling the received signal to a Single Mode Fibre is vital when using a SNSPD because they are commonly used as input to the cryostat, in order to minimize dark counts. When the communication optical link is expected to suffer atmospheric turbulence during its free-space path, being able to compensate them using adaptive optics could improve the coupling efficiency by a factor of 25 for a 1-meter telescope, as has been obtained in simulations carried out by our group. Our group has also found in simulations that an adaptive optics system based on the plenoptic camera will behave especially well in the situation of high turbulence, as it can be expected for sea-level communications. An optical design based in the use of the plenoptic camera as wavefront sensor for the TOGS will be presented.
The evolution of the ALIOLI instrument Esther Soria Hernández, Roberto López López, Alejandro Oscoz Abad, David Lopez Fernandez-Nespral Proceedings of SPIE the International Society for Optical Engineering, 2022 The Adaptive and Lucky Imagine Optics Lightweight Instrument (ALIOLI) is a portable Adaptive Optics (AO) system capable of being installed on different medium-sized telescopes due to a modular approach to its components. The Wavefront Sensor (WFS) module is designed to be used with three different WFSs: Shack-Hartmann (SH), Two Pupil Plane Position (TP3), and Pyramidal unmodulated, allowing a joint configuration for comparative studies of WFS response when different observing situations. In this article we show the assembly of the TP3 module and we summarize the first open-loop measurements on the bench. These results have been compared with those obtained in the simulation phase. Finally, we present the next proposed tests and the steps to follow for possible updates.
Design considerations for a Transportable Optical Ground Station with Adaptive Optics Luis Fernando Rodriguez Ramos, Joan Torras Estruch, Noelia Martinez Rey, Jorge Socas Negrin, Iciar Montilla, Marcos Reyes Garcia-Talavera, Alex Oscoz, Angel Alonso Sanchez, Pablo Gonzalez de Chaves Fernandez 2022 IEEE International Conference on Space Optical Systems and Applications Icsos 2022, 2022 IACTEC, as the technology transfer division of the Instituto de Astrofísica de Canarias (IAC), is initiating a program towards the practical applications of optical communications and specifically the quantum key distribution, taking advantage of its facilities and experience in free-space optical communications and its know-how in Adaptive Optics. The main objective of the optical communication group is related to the use of the atmospheric turbulence compensation to improve the performance of a Transportable Optical Ground Station (TOGS). This compensation is especially challenging when daytime operations are considered, and also if the TOGS is expected to work in virtually any location, including ordinary city buildings, where atmospheric turbulence is much worse than that found in astrophysical observatories. The role of Adaptive Optics could be especially relevant when using superconducting nanowires detectors, which can achieve very low dark counts when fed from a single mode fiber. In this situation, the ability to couple the light received at the telescope to the fiber is vital, and if the wavefront aberration caused by the atmospheric turbulence is corrected before the coupling to the fiber, the total loss of the quantum channel will be lowered and the key rate improved. This improvement will be estimated through simulations of the atmospheric turbulence characteristics of the different scenarios.
ALIOLI: Presentation and first steps Esther Soria Hernández, Roberto López López, Alejandro Oscoz Abad, Carlos Colodro Conde Proceedings of SPIE the International Society for Optical Engineering, 2020 Adaptive optics (AO) systems correct atmospheric turbulence in real time and they are normally used in large and medium telescopes but not in modest telescopes due to their size and cost. Here we propose a portable AO instrument capable of being installed in different medium and small-sized telescopes. The novelty of this new instrument is that it is based on the modularization of its components: simulator/calibrator, Wavefront Corrector (WFC) with a deformable mirror (DM) and Wavefront sensor (WFS) modules. This modular concept allows great flexibility in the design, being possible to easily adapt the instrument to the working telescope or instrument by adjusting each module independently. This concept also makes possible the comparison between different types of WFS such as Shack-Hartmann (S-H), Two Pupil Plane Position (TP3) or Pyramidal. Here we present the optical design and expected performance of the three WFS for 1.52m, Carlos Sanchez Telescope (TCS), and the preliminary results of the S-H sensor in laboratory and the first on-sky test.
MuSCAT2: Four-color simultaneous camera for the 1.52-m Telescopio Carlos Sánchez Norio Narita, Akihiko Fukui, Nobuhiko Kusakabe, Noriharu Watanabe, Enric Palle, Hannu Parviainen, Pilar Montañés-Rodríguez, Felipe Murgas, Matteo Monelli, Marta Aguiar, Jorge Andres Perez Prieto Journal of Astronomical Telescopes Instruments and Systems, 2019 We report the development of a four-color simultaneous camera for the 1.52-m Telescopio Carlos Sánchez in the Teide Observatory, Canaries, Spain. The instrument, named MuSCAT2, has a capability of four-color simultaneous imaging in g (400 to 550 nm), r (550 to 700 nm), i (700 to 820 nm), and zs (820 to 920 nm) bands. MuSCAT2 equips four 1024 × 1024 pixel CCDs, having a field of view of 7.4 × 7.4 arc min2 with a pixel scale of 0.44 arc sec per pixel. The principal purpose of MuSCAT2 is to perform high-precision multicolor exoplanet transit photometry. We demonstrate photometric precisions of 0.057%, 0.050%, 0.060%, and 0.076% as root-mean-square residuals of 60 s binning in g, r, i, and zs bands, respectively, for a G0 V star WASP-12 (V = 11.57 ± 0.16). MuSCAT2 has started science operations since January 2018, with over 250 telescope nights per year. MuSCAT2 is expected to become a reference tool for exoplanet transit observations and substantially contributes to the follow-up of the Transiting Exoplanet Survey Satellite and Planetary Transits and Oscillations of stars space missions.
ALIOLI: Adaptive and Lucky Imaging Optics Lightweight Instrument Sergio Velasco Muñoz, Roberto López López, Alejandro Oscoz, Carlos Colodro-Conde Proceedings of SPIE the International Society for Optical Engineering, 2018 As a consequence of the evolution in the design and of the modularity of its components, AOLI for the William Herschel Telescope (WHT 4.2m) is much smaller and more efficient than its previous designs. This success has leaded us to plan to condense it even more to get a portable and easy to integrate system, ALIOLI (Adaptive and Lucky Imaging Optics Lightweight Instrument). It consists of a DM+WFS module with a lucky imaging science camera attached. ALIOLI is an AO instrument for the 1-2m class telescopes which will also be used as on-sky testbench for AO developments. Here we describe the setup to be installed at the 1.5m Telescopio Carlos Snchez (TCS) at the Spanish Observatorio del Teide (Tenerife, Canary Islands).
Space developments at iactec Proceedings of the 13th Scientific Meeting of the Spanish Astronomical Society Highlights of Spanish Astrophysics X Sea 2018, 2018
Laboratory and telescope demonstration of the TP3-WFS for the adaptive optics segment of AOLI C. Colodro-Conde, S. Velasco, J. J. Fernández-Valdivia, R. López, A. Oscoz, R. Rebolo, B. Femenía, D. L. King, L. Labadie, C. Mackay, B. Muthusubramanian, A. Pérez Garrido, M. Puga, G. Rodríguez-Coira, L. F. Rodríguez-Ramos, J. M. Rodríguez-Ramos, R. Toledo-Moreo, I. Villó-Pérez Monthly Notices of the Royal Astronomical Society, 2017
Processing diffraction-limited images through innovative Super-Resolution techniques Adaptive Optics for Extremely Large Telescopes 2017 Ao4elt5, 2017
The TP3-WFS: A new guy in town Adaptive Optics for Extremely Large Telescopes 2017 Ao4elt5, 2017
Real time phase compensation using a tomographical pupil image wavefront sensor (TPI-WFS) J.J. Fernández-Valdivia, J.M. Trujillo-Sevilla, O. Casanova-González, R. L. López, S. Velasco, C. Colodro-Conde, M. Puga, A. Oscoz, R. Rebolo, C. Mackay, A. Pérez-Garrido, L.F. Rodríguez-Ramos, D. King, L. Labadie, B. Muthusubramanian, G. Rodríguez-Coira, J.M. Rodríguez-Ramos 2016 15th Workshop on Information Optics Wio 2016, 2016
LkHα 262/263: The paradigm of multiplicity vs disk fraction in low-mass stellar systems Proceedings of the 12th Scientific Meeting of the Spanish Astronomical Society Highlights of Spanish Astrophysics Ix Sea 2016, 2016
Snorkelling between the stars: Submarine methods for astronomical observations Proceedings of the 12th Scientific Meeting of the Spanish Astronomical Society Highlights of Spanish Astrophysics Ix Sea 2016, 2016
Commissioning and first observations with Wide FastCam at the Telescopio Carlos Sánchez Sergio Velasco, Urtats Etxegarai, Alejandro Oscoz, Roberto L. López, Marta Puga, Gaizka Murga, Antonio Pérez-Garrido, Enric Pallé, Davide Ricci, Ismael Ayuso, Mónica Hernández-Sánchez, Nicola Truant Proceedings of SPIE the International Society for Optical Engineering, 2016
EMCCD calibration for astronomical imaging: Wide FastCam at the Telescopio Carlos Sánchez Proceedings of the 12th Scientific Meeting of the Spanish Astronomical Society Highlights of Spanish Astrophysics Ix Sea 2016, 2016
AOLI: Near-diffraction limited imaging in the visible on large ground-based telescopes Craig Mackay, Rafael Rebolo, David L. King, Lucas Labadie, Marta Puga, Antonio Pérez Garrido, Carlos Colodro-Conde, Roberto L. Lopez, Balaji Muthusubramanian, Alejandro Oscoz, J. Rodríguez Ramos, Luis F. Rodrigo-Ramos, J. J. Fernandez-Valdivia, Sergio Velasco Proceedings of SPIE the International Society for Optical Engineering, 2016
An instrumental puzzle: The modular integration of AOLI Roberto L. López, Sergio Velasco, Carlos Colodro-Conde, Juan J. F. Valdivia, Marta Puga, Alejandro Oscoz, Rafael Rebolo, Craig MacKay, Antonio Pérez-Garrido, Luis Fernando Rodríguez-Ramos, José Manuel M. Rodríguez-Ramos, David King, Lucas Labadie, Balaji Muthusubramanian, Gustavo Rodríguez-Coira Proceedings of SPIE the International Society for Optical Engineering, 2016
Completing the puzzle: AOLI full-commissioning fresh results and AIV innovations Proceedings of the 12th Scientific Meeting of the Spanish Astronomical Society Highlights of Spanish Astrophysics Ix Sea 2016, 2016
Liverpool telescope 2: a new robotic facility for rapid transient follow-up C. M. Copperwheat, I. A. Steele, R. M. Barnsley, S. D. Bates, D. Bersier, M. F. Bode, D. Carter, N. R. Clay, C. A. Collins, M. J. Darnley, C. J. Davis, C. M. Gutierrez, D. J. Harman, P. A. James, J. H. Knapen, S. Kobayashi, J. M. Marchant, P. A. Mazzali, C. J. Mottram, C. G. Mundell, A. Newsam, A. Oscoz, E. Palle, A. Piascik, R. Rebolo, R. J. Smith Experimental Astronomy, 2015
Experimental validation of Lyot stop apodization in ground-based coronagraphy Miguel A. Cagigas, Pedro J. Valle, Manuel P. Cagigal, Xesús Prieto-Blanco, Antonio Pérez-Garrido, Isidro Villo-Pérez, B. Femenía, J. A. Pérez-Prieto, L. F. Rodríguez, R. López, A. Oscoz, R. Rebolo Monthly Notices of the Royal Astronomical Society, 2015
Preliminary design of the real-time control software for the adaptive optics of AOLI Carlos Colodro-Conde, Luis F. Rodríguez-Ramos, Isidro Villó, Craig Mackay, Rafael Rebolo, Jonathan Crass, Juan J. Fernández-Valdivia, David L. King, Lucas Labadie, Roberto López, Alejandro Oscoz, Antonio Pérez-Garrido, Marta Puga, José M. Rodríguez-Ramos, Sergio Velasco Lecture Notes in Computer Science Including Subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics, 2015
Adaptive optics and lucky imager (AOLI): Presentation and first light Proceedings of the 11th Scientific Meeting of the Spanish Astronomical Society Highlights of Spanish Astrophysics Viii Sea 2014, 2014
High-resolution imaging in the visible on large ground-based telescopes Craig MacKay, Rafael Rebolo, Jonathan Crass, David L. King, Lucas Labadie, Victor González Escalera, Marta Puga, Antonio Pérez Garrido, Roberto López, Alejanrdo Oscoz, Jorge A. Pérez-Prieto, Luis F. Rodríguez-Ramos, Sergio Velasco, Isidro Villó Proceedings of SPIE the International Society for Optical Engineering, 2014
The AOLI low-order non-linear curvature wavefront sensor: A method for high sensitivity wavefront reconstruction Jonathan Crass, Peter Aisher, Bruno Femenia, David L. King, Craig D. Mackay, Rafael Rebolo-López, Lucas Labadie, Antonio Pérez Garrido, Marc Balcells, Anastasio Díaz Sánchez, Jesús Jimenez Fuensalida, Roberto L. Lopez, Alejandro Oscoz, Jorge A. Pérez Prieto, Luis F. Rodríguez-Ramos, Isidro Villó Proceedings of SPIE the International Society for Optical Engineering, 2012
AOLI - Adaptive Optics Lucky Imager: Diffraction limited imaging in the visible on large ground-based telescopes Craig Mackay, Rafael Rebolo-López, Bruno Femenia Castellá, Jonathan Crass, David L. King, Lucas Labadie, Peter Aisher, Antonio Pérez Garrido, Marc Balcells, Anastasio Díaz-Sánchez, Jesús Jimenez Fuensalida, Roberto L. Lopez, Alejandro Oscoz, Jorge A. Pérez Prieto, Luis F. Rodríguez-Ramos, Isidro Villó Proceedings of SPIE the International Society for Optical Engineering, 2012
A Pluto-like radius and a high albedo for the dwarf planet Eris from an occultation B. Sicardy, J. L. Ortiz, M. Assafin, E. Jehin, A. Maury, E. Lellouch, R. Gil Hutton, F. Braga-Ribas, F. Colas, D. Hestroffer, J. Lecacheux, F. Roques, P. Santos-Sanz, T. Widemann, N. Morales, R. Duffard, A. Thirouin, A. J. Castro-Tirado, M. Jelínek, P. Kubánek, A. Sota, R. Sánchez-Ramírez, A. H. Andrei, J. I. B. Camargo, D. N. da Silva Neto, A. Ramos Gomes, R. Vieira Martins, M. Gillon, J. Manfroid, G. P. Tozzi, C. Harlingten, S. Saravia, R. Behrend, S. Mottola, E. García Melendo, V. Peris, J. Fabregat, J. M. Madiedo, L. Cuesta, M. T. Eibe, A. Ullán, F. Organero, S. Pastor, J. A. de los Reyes, S. Pedraz, A. Castro, I. de la Cueva, G. Muler, I. A. Steele, M. Cebrián, P. Montañés-Rodríguez, A. Oscoz, D. Weaver, C. Jacques, W. J. B. Corradi, F. P. Santos, W. Reis, A. Milone, M. Emilio, L. Gutiérrez, R. Vázquez, H. Hernández-Toledo Nature, 2011
Lucky Imaging Adaptive Optics of the brown dwarf binary GJ569Bab B. Femenía, R. Rebolo, J. A. Pérez-Prieto, S. R. Hildebrandt, L. Labadie, A. Pérez-Garrido, V. J. S. Béjar, A. Díaz-Sánchez, I. Villó, A. Oscoz, R. López, L. F. Rodríguez, J. Piqueras Monthly Notices of the Royal Astronomical Society, 2011
FastCam optomechanical system design and manufacture Gaizka Murga, Rubén Sanquirce, Ramón Campo, Alex Oscoz, Roberto López, Rafael Rebolo Proceedings of SPIE the International Society for Optical Engineering, 2010
High spatial resolution and high contrast optical speckle imaging with FASTCAM at the ORM Lucas Labadie, Rafael Rebolo, Bruno Femenía, Isidro Villó, Anastasio Díaz-Sánchez, Alejandro Oscoz, Roberto López, Jorge A. Pérez-Prieto, Antonio Pérez-Garrido, Sergi R. Hildebrandt, Victor Béjar-Sánchez, Juan José Piqueras, Luis F. Rodríguez Proceedings of SPIE the International Society for Optical Engineering, 2010
FastCam: a new lucky imaging instrument for medium-sized telescopes Alejandro Oscoz, Rafael Rebolo, Roberto López, Antonio Pérez-Garrido, Jorge Andrés Pérez, Sergi Hildebrandt, Luis Fernando Rodríguez, Juan José Piqueras, Isidro Villó, José Miguel González, Rafael Barrena, Gabriel Gómez, Anibal García, Pilar Montañés, Alfred Rosenberg, Emilio Cadavid, Ariadna Calcines, Anastasio Díaz-Sánchez, Ralf Kohley, Yolanda Martín, José Peñate, Vicente Sánchez Proceedings of SPIE the International Society for Optical Engineering, 2008
Applying high performance computing techniques in astrophysics Francisco Almeida, Evencio Mediavilla, Alex Oscoz, Francisco de Sande Lecture Notes in Computer Science Including Subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics, 2006
New VR magnification ratios of QSO 0957+561 L. J. Goicoechea, R. Gil‐Merino, A. Ullan, M. Serra‐Ricart, J. A. Munoz, E. Mediavilla, J. Gonzalez‐Cadelo, A. Oscoz Astrophysical Journal, 2005
Around-the-clock observations of the Q0957+561A,B gravitationally lensed quasar. II. Results for the second observing season Wesley N. Colley, Rudolph E. Schild, Cristina Abajas, David Alcalde, Zeki Aslan, Ilfan Bikmaev, Vahram Chavushyan, Luis Chinarro, Jean‐Philippe Cournoyer, Richard Crowe, Vladimir Dudinov, Anna Kathinka Dalland Evans, Young‐Beom Jeon, Luis J. Goicoechea, Orhan Golbasi, Irek Khamitov, Kjetil Kjernsmo, Hyun Ju Lee, Jonghwan Lee, Ki Won Lee, Myung Gyoon Lee, Omar Lopez‐Cruz, Evencio Mediavilla, Anthony F. J. Moffat, Raul Mujica, Aurora Ullan, Jose Munoz, Alexander Oscoz, Myeong‐Gu Park, Norman Purves, Oyvind Saanum, Nail Sakhibullin, Miquel Serra‐Ricart, Igor Sinelnikov, Rolf Stabell, Alan Stockton, Jan Teuber, Roy Thompson, Hwa‐Sung Woo, Alexander Zheleznyak Astrophysical Journal, 2003
Observations of the 2001 Leonid meteor storm from Northern Australia with the teide imaging meteor system European Space Agency Special Publication ESA SP, 2002
Around the clock observations of the Q0957 + 561A,B gravitationally lensed quasar Wesley N. Colley, Rudolph E. Schild, Cristina Abajas, David Alcalde, Zeki Aslan, Rafael Barrena, Vladimir Dudinov, Irek Khamitov, Kjetil Kjernsmo, Hyun Ju Lee, Jonghwan Lee, Myung Gyoon Lee, Javier Licandro, Dan Maoz, Evencio Mediavilla, Veronica Motta, Jose Munoz, Alex Oscoz, Miquel Serra‐Ricart, Igor Sinelnikov, Rolf Stabell, Jan Teuber, Alexander Zheleznyak Astrophysical Journal, 2002
The very red afterglow of GRB 000418: Further evidence for dust extinction in a gamma-ray burst host galaxy S. Klose, B. Stecklum, N. Masetti, E. Pian, E. Palazzi, A. A. Henden, D. H. Hartmann, O. Fischer, J. Gorosabel, C. Sanchez‐Fernandez, D. Butler, Th. Ott, S. Hippler, M. Kasper, R. Weiss, A. Castro‐Tirado, J. Greiner, C. Bartolini, A. Guarnieri, A. Piccioni, S. Benetti, F. Ghinassi, A. Magazzu, K. Hurley, T. Cline, J. Trombka, T. McClanahan, R. Starr, J. Goldsten, R. Gold, E. Mazets, S. Golenetskii, K. Noeske, P. Papaderos, P. M. Vreeswijk, N. Tanvir, A. Oscoz, J. A. Munoz, J. M. Castro Ceron Astrophysical Journal, 2000
An early-time infrared and optical study of the Type Ia Supernova 1998bu in M96 M. Hernandez, W. P. S. Meikle, A. Aparicio, C. R. Benn, M. R. Burleigh, A. C. Chrysostomou, A. J. L. Fernandes, T. R. Geballe, P. L. Hammersley, J. Iglesias-Paramo, D. J. James, P. A. James, S. N. Kemp, T. A. Lister, D. Martinez-Delgado, A. Oscoz, D. L. Pollacco, M. Rozas, S. J. Smartt, P. Sorensen, R. A. Swaters, J. H. Telting, W. D. Vacca, N. A. Walton, M. R. Zapatero-Osorio Monthly Notices of the Royal Astronomical Society, 2000
Optical and infrared photometry of the type IIn SN 1998s: Days 11-146 A. Fassia, W. P. S. Meikle, W. D. Vacca, S. N. Kemp, N. A. Walton, D. L. Pollacco, S. Smartt, A. Oscoz, A. Aragon-Salamanca, S. Bennett, T. G. Hawarden, A. Alonso, D. Alcalde, A. Pedrosa, J. Telting, M. J. Arevalo, H. J. Deeg, F. Garzon, A. Gomez-Roldan, G. Gomez, C. Gutierrez, S. Lopez, M. Rozas, M. Serra-Ricart, M. R. Zapatero-Osorio Monthly Notices of the Royal Astronomical Society, 2000
Decay of the GRB 990123 optical afterglow: Implications for the fireball model Alberto J. Castro-Tirado, Marı́a Rosa Zapatero-Osorio, Nicola Caon, Luz Marina Cairós, Jens Hjorth, Holger Pedersen, Michael I. Andersen, Javier Gorosabel, Corrado Bartolini, Adriano Guarnieri, Adalberto Piccioni, Filippo Frontera, Nicola Masetti, Eliana Palazzi, Elena Pian, Jochen Greiner, Renè Hudec, Ram Sagar, Anil K. Pandey, Vinay Mohan, Ramakant K. S. Yadav, Nilakshi, Gunnlaugur Björnsson, Páll Jakobsson, Ingunn Burud, Frederic Courbin, Gaetano Valentini, Anna Piersimoni, Jesús Aceituno, Luz Marı́a Montoya, Santos Pedraz, Roland Gredel, Charles F. Claver, Travis A. Rector, James E. Rhoads, Fabian Walter, Jürgen Ott, Hans Hippelein, Victor Sánchez-Béjar, Carlos Gutiérrez, Alejandro Oscoz, Jin Zhu, Jiansheng Chen, Haotong Zhang, Jianyan Wei, Aiying Zhou, Sergei Guziy, Aleksei Shlyapnikov, John Heise, Enrico Costa, Marco Feroci, Luigi Piro Science, 1999
The optical/IR counterpart of the 1998 July 3 gamma-ray burst and its evolution A. J. Castro-Tirado, M. R. Zapatero-Osorio, J. Gorosabel, J. Greiner, J. Heidt, D. Herranz, S. N. Kemp, E. Martínez-González, A. Oscoz, V. Ortega, H.-J. Röser, C. Wolf, H. Pedersen, A. O. Jaunsen, H. Korhonen, I. Ilyin, R. Duemmler, M. I. Andersen, J. Hjorth, A. A. Henden, F. J. Vrba, J. W. Fried, F. Frontera, L. Nicastro Astrophysical Journal, 1999
The spin axis position of C/1995 O1 (Hale-Bopp) J. Licandro, L. R. Bellot Rubio, R. Casas, A. Gómez, M. R. Kidger, N. Sabalisk, P. Santos-Sanz, M. Serra-Ricart, R. Torres-Chico, A. Oscoz, L. Jorda, G. Denicolo Earth Moon and Planets, 1997
Optical photometry of quasar 0957+561A, B Alejandro Oscoz, Miquel Serra-Ricart, Luis Julian Goicoechea, Jesús Buitrago, Evencio Mediavilla Astrophysical Journal, 1996
Distribution of the myocardial temperature in patients subjected to valvular and coronary surgery. Analysis of re-warming constants Revista Espanola De Cardiologia, 1983
