Zobrazeno 1 - 10
of 39
pro vyhledávání: '"Francisco Colomer"'
Autor:
Francisco Colomer
Publikováno v:
Proceedings of European VLBI Network Mini-Symposium and Users' Meeting 2021 — PoS(EVN2021).
Publikováno v:
Proceedings of the International Astronomical Union. 13:411-416
Very Long Baseline Interferometry (VLBI) is providing key information to the study of maser processes in the Universe, from star formation regions or circumstellar envelopes around evolved stars, to Galactic structure and cosmology, through precise a
Autor:
Francisco Colomer, F. Tercero, E. García, Jose Manuel Serna Puente, Francisco Javier Herraiz Martínez, Magdalena Salazar Palma, Sergio Llorente Romano, Daniel Segovia Vargas, Jose Antonio Lopez Perez, Alejandro Garcia Lamperez, José Antonio López Fernández, Kerlos Atia Abdalmalak
Publikováno v:
2016 10th European Conference on Antennas and Propagation (EuCAP).
The requirements for the VGOS (VLBI Global Observation System) [1] are: feed system covering the 2 to 14 GHz bandwidth and also working with high efficiency (> 50%). Universidad Carlos III de Madrid has developed a new topology to cover them. The new
Autor:
Francisco Colomer, F. Tercero, A. Moreno, I. Malo, P. de Vicente, B. Vaquero, A. Barcia, C. Albo, J. A. López-Fernández, J. M. Serna, R. Bolaño, M. C. Diez, I. Lopez-Fernandez, A. Díaz-Pulido, M. Patino, Javier Alcolea, J. Gomez-Gonzalez, Juan Daniel Gallego, Valentin Bujarrabal, J. A. López-Pérez, L. Barbas
Observations of 28SiO v=0 J=1-0 line emission (7-mm wavelength) from AGB stars show in some cases peculiar profiles, composed of a central intense component plus a wider plateau. Very similar profiles have been observed in CO lines from some AGB star
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::95f26959afaa7b322d3a0b836e2830b9
http://arxiv.org/abs/1603.01163
http://arxiv.org/abs/1603.01163
Publikováno v:
Astronomy & Astrophysics. 468:189-192
Context. OH 231.8+4.2 is a well studied preplanetary nebula (pPN) around a binary stellar system that shows a remarkable bipolar outflow. Aims. To study the structure and kinematics of the inner 10-80AU nebular regions probed by SiO and H 2 O maser e
Autor:
Francisco Colomer, Javier Alcolea, Valentin Bujarrabal, C. Sánchez Contreras, R. Soria-Ruiz, J. F. Desmurs
Publikováno v:
Proceedings of the International Astronomical Union. 3:271-278
SiO maser emission allows us to study the innermost circumstellar layers around AGB and post-AGB stars, at a few AU from the stellar photosphere, what is crucial to understand the mass loss process in AGB stars and the jet launching mechanisms in pos
Autor:
Jose Antonio Lopez Perez, F. Tercero, E. García, Jose Manuel Serna Puente, Francisco Javier Herraiz Martínez, Daniel Segovia Vargas, Magdalena Salazar Palma, Sergio Llorente Romano, Alejandro Garcia Lamperez, José Antonio López Fernández, Francisco Colomer
Publikováno v:
2015 Loughborough Antennas & Propagation Conference (LAPC).
VLBI2010 requires a feed that simultaneously has high efficiency over the full 2–14 GHz frequency range. The simultaneity requirement implies that the feed must operate at high efficiency over the full frequency range without the need to adjust its
Autor:
Axel Nothnagel, Walter Alef, Jun Amagai, Per Helge Andersen, James Anderson, Tatiana Andreeva, Thomas Artz, Sabine Bachmann, Kyriakos Balidakis, Christophe Barache, Alain Baudry, Erhard Bauernfeind, Karen Baver, Christopher Beaudoin, Dirk Behrend, Antoine Bellanger, Anton Berdnikov, Per Bergman, Simone Bernhart, Alessandra Bertarini, Giuseppe Bianco, Ewald Bielmaier, David Boboltz, Johannes Böhm, Sigrid Böhm, Armin Boer, Sergei Bolotin, Mireille Bougeard, Geraldine Bourda, Sylvain Brazeau, Salvo Buttaccio, Letizia Cannizzaro, Roger Cappallo, Brent Carlson, Merri Sue Carter, Patrick Charlot, Chenyu Chen, Maozheng Chen, Jungho Cho, Thomas Clark, Arnaud Collioud, Francisco Colomer, Giuseppe Colucci, Ludwig Combrinck, John Conway, Brian Corey, Ronald Curtis, Mike Daniels, Reiner Dassing, Maria Davis, Pablo de-Vicente, Aletha De Witt, Alexey Diakov, John Dickey, Christopher Dieck, Irv Diegel, Koichiro Doi, Hermann Drewes, Maurice Dube, Gunnar Elgered, Gerald Engelhardt, Mark Evangelista, Qingyuan Fan, Stephen Farley, Leonid Fedotov, Alan Fey, Ricardo Figueroa, Yoshihiro Fukuzaki, Daniel Gambis, Susana Garcia-Espada, Ralph Gaume, Nicole Geiger, John Gipson, Susanne Glaser, Frank Gomez, Jesus Gomez-Gonzalez, David Gordon, Ramesh Govind, Vadim Gubanov, Sergei Gulyaev, Ruediger Haas, David Hall, Sebastian Halsig, Roger Hammargren, Hayo Hase, R. Heinkelmann, Leif Helldner, Cristian Herrera, Ed Himwich, Thomas Hobiger, Christoph Holst, Xiaoyu Hong, Mareki Honma, Xinyong Huang, Urs Hugentobler, Ryuichi Ichikawa, Andreas Iddink, Johannes Ihde, Gennadiy Ilijin, Roxanne Inniss, Alexander Ipatov, Irina Ipatova, Misao Ishihara, D. V. Ivanov, Chris Jacobs, Takaaki Jike, Karl-Ake Johansson, Heidi Johnson, Kenneth Johnston, Hyunhee Ju, Masao Karasawa, Maria Karbon, Pierre Kaufmann, Ryoji Kawabata, Noriyuki Kawaguchi, Eiji Kawai, Michael Kaydanovsky, Mikhail Kharinov, Hideyuki Kobayashi, Kensuke Kokado, Tetsuro Kondo, Edward Korkin, Yasuhiro Koyama, Hana Krasna, Gerhard Kronschnabl, Sergey Kurdubov, Shinobu Kurihara, Jiro Kuroda, Younghee Kwak, Laura La Porta, Ruth Labelle, Jacques LaFrance, Doug Lamb, Sébastien Lambert, Line Langkaas, Roberto Lanotte, Alexey Lavrov, Karine Le Bail, Judith Leek, Bing Li, Huihua Li, Jinling Li, Liu Li, Shiguang Liang, Michael Lindqvist, Xiang Liu, Michael Loesler, Jim Long, Colin Lonsdale, Jim Lovell, Stephen Lowe, Antonio Lucena, Brian Luzum, Chopo Ma, Jun Ma, Giuseppe Maccaferri, Morito Machida, Dan MacMillan, Matthias Madzak, Zinovy Malkin, Seiji Manabe, Franco Mantovani, Vyacheslav Mardyshkin, Dmitry Marshalov, Geir Mathiassen, Shigeru Matsuzaka, Dennis McCarthy, Alexey Melnikov, Linda Messerschmitt, Andrey Mikhailov, Natalia Miller, Donald Mitchell, Julian Andres Mora-Diaz, Arno Mueskens, Yasuko Mukai, Mauro Nanni, Tim Natusch, Monia Negusini, Alexander Neidhardt, Marisa Nickola, George Nicolson, Arthur Niell, Pavel Nikitin, Tobias Nilsson, Tong Ning, Takashi Nishikawa, Carey Noll, Kentarou Nozawa, Clement Ogaja, Hongjong Oh, Hans Olofsson, Per Erik Opseth, Sandro Orfei, Rosa Pacione, Katherine Pazamickas, Felipe Pedreros, William Petrachenko, Lars Pettersson, Pedro Pino, Lucia Plank, Christian Ploetz, Michael Poirier, Joseph Popelar, Markku Poutanen, Zhihan Qian, Jonathan Quick, Ismail Rahimov, Jay Redmond, Brett Reid, John Reynolds, Bernd Richter, Maria Rioja, Andres Romero-Wolf, Chester Ruszczyk, Alexander Salnikov, Pierguido Sarti, Raimund Schatz, Hans-Georg Scherneck, Francesco Schiavone, Ralf Schmid, Ulrich Schreiber, H. Schuh, Walter Schwarz, Cecilia Sciarretta, Anthony Searle, Mamoru Sekido, Manuela Seitz, Stanislav Shabala, Minghui Shao, Kazuo Shibuya, Fengchun Shu, Moritz Sieber, Asmund Skjaeveland, Elena Skurikhina, Sergey Smolentsev, Dan Smythe, Benedikt Soja, Adeildo Sombra, Don Sousa, Ojars Sovers, John Spitzak, Laura Stanford, Carlo Stanghellini, Alan Steppe, Rich Strand, Jing Sun, Igor Surkis, Kazuhiro Takashima, Kazuhiro Takefuji, Hiroshi Takiguchi, Yoshiaki Tamura, Tadashi Tanabe, Emine Tanir, An Tao, Claudio Tateyama, Kamil Teke, Cynthia Thomas, Volkmar Thorandt, Bruce Thornton, Claudia Tierno Ros, Oleg Titov, Mike Titus, Paolo Tomasi, Vincenza Tornatore, Corrado Trigilio, Dmitriy Trofimov, Masanori Tsutsumi, Gino Tuccari, Tasso Tzioumis, Hideki Ujihara, Dieter Ullrich, Minttu Uunila, Daniel Veillette, Tiziana Venturi, Francesco Vespe, Veniamin Vityazev, Alexandr Volvach, Alexander Vytnov, Guangli Wang, Jinqing Wang, Lingling Wang, Na Wang, Shiqiang Wang, Wenren Wei, Stuart Weston, Alan Whitney, Reiner Wojdziak, Yaroslav Yatskiv, Wenjun Yang, Shuhua Ye, Sangoh Yi, Aili Yusup, Octavio Zapata, Reinhard Zeitlhoefler, Hua Zhang, Ming Zhang, Xiuzhong Zhang, Rongbing Zhao, Weimin Zheng, Ruixian Zhou, Nataliya Zubko
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::43e6244dbd2ac64f7ac36f31b7cab422
https://gfzpublic.gfz-potsdam.de/pubman/item/item_2285891
https://gfzpublic.gfz-potsdam.de/pubman/item/item_2285891
Autor:
Francisco Colomer, Valentin Bujarrabal, J. F. Desmurs, K. B. Marvel, R. Soria-Ruiz, Javier Alcolea
Publikováno v:
Astronomy & Astrophysics. 432:L39-L42
We report the first VLBI map of the $v=0$ $J=$ 1–0 maser line of 29 SiO in the long-period variable star IRC +10011. We have found that this maser emission is composed of multiple spots distributed in an incomplete ring, suggesting that this maser
Autor:
Javier Alcolea, Philip J. Diamond, Valentin Bujarrabal, J.-F. Desmurs, Francisco Colomer, K. B. Marvel, R. Soria-Ruiz
Publikováno v:
Astronomy & Astrophysics. 426:131-144
We present sub-milliarcsecond observations of SiO masers in the late-type stars IRC +10011 and Chi Cyg. We have used the NRAO Very Long Baseline Array (VLBA) to map the 43 GHz (v=1, 2 J=1-0) and the 86 GHz (v=1, 2 J=2-1) SiO masers. All the transitio