Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Guillout, Patrick"'
Autor:
Halbwachs, Jean-Louis, Pourbaix, Dimitri, Arenou, Frédéric, Galluccio, Laurent, Guillout, Patrick, Bauchet, Nathalie, Marchal, Olivier, Sadowski, Gilles, Teyssier, David
Publikováno v:
A&A 674, A9 (2023)
Context.The Gaia Early Data Release 3 contained the positions, parallaxes and proper motions of 1.5 billion sources, among which some did not fit well the "single star" model. Binarity is one of the causes of this. Aims. Four million of these stars w
Externí odkaz:
http://arxiv.org/abs/2206.05726
Autor:
Halbwachs, Jean-Louis, Kiefer, Flavien, Lebreton, Yveline, Boffin, Henri M. J., Arenou, Frédéric, Bouquin, Jean-Baptiste Le, Famaey, Benoît, Pourbaix, Dimitri, Guillout, Patrick, Salomon, Jean-Baptiste, Mazeh, Tsevi
Double-lined spectroscopic binaries (SB2s) are one of the main sources of stellar masses, as additional observations are only needed to give the inclinations of the orbital planes in order to obtain the individual masses of the components. For this r
Externí odkaz:
http://arxiv.org/abs/2006.01467
Autor:
Halbwachs, Jean-Louis, Kiefer, Flavien, Arenou, Frédéric, Famaey, Benoît, Guillout, Patrick, Ibata, Rodrigo, Mazeh, Tsevi, Pourbaix, Dimitri
The radial velocity (RV) of a single star is easily obtained from cross-correlation of the spectrum with a template, but the treatment of double-lined spectroscopic binaries (SB2s) is more difficult. Two different approaches were applied to a set of
Externí odkaz:
http://arxiv.org/abs/1710.02301
Autor:
Halbwachs, Jean-Louis, Arenou, Frédéric, Boffin, Henri M. J., Famaey, Benoît, Jorissen, Alain, Kiefer, Flavien, Bouquin, Jean-Baptiste Le, Pourbaix, Dimitri, Guillout, Patrick, Ibata, Rodrigo, Lebreton, Yveline, Mazeh, Tsevi, Gomez-Moran, Ada Nebot, Tal-Or, Lev
Accurate stellar masses are requested in order to improve our understanding of stellar interiors, but they are still rather rare. Fortunately, the forthcoming Gaia Mission will provide astrometric measurements permitting the derivation of the orbital
Externí odkaz:
http://arxiv.org/abs/1710.02017
Autor:
Kiefer, Flavien, Halbwachs, Jean-Louis, Arenou, Frédéric, Pourbaix, Dimitri, Famaey, Benoit, Guillout, Patrick, Lebreton, Yveline, Gómez-Morán, Ada Nebot, Mazeh, Tsevi, Salomon, Jean-Baptiste, Soubiran, Caroline, Tal-Or, Lev
In anticipation of the Gaia astrometric mission, a large sample of spectroscopic binaries has been observed since 2010 with the SOPHIE spectrograph at the Haute--Provence Observatory. Our aim is to derive the orbital elements of double-lined spectros
Externí odkaz:
http://arxiv.org/abs/1603.02861
Autor:
Halbwachs, Jean-Louis, Arenou, Frédéric, Pourbaix, Dimitri, Famaey, Benoît, Guillout, Patrick, Lebreton, Yveline, Salomon, Jean-Baptiste, Tal-Or, Lev, Ibata, Rodrigo, Mazeh, Tsevi
In anticipation of the Gaia astrometric mission, a large sample of spectroscopic binaries is being observed since 2010 with the Sophie spectrograph at the Haute--Provence Observatory. Our aim is to derive the orbital elements of double-lined spectros
Externí odkaz:
http://arxiv.org/abs/1409.1384
Publikováno v:
A&A 570, A105 (2014)
Ou4 is a recently discovered bipolar outflow with a projected size of more than one degree in the plane of the sky. It is apparently centred on the young stellar cluster -whose most massive representative is the triple system HR8119- inside the HII r
Externí odkaz:
http://arxiv.org/abs/1407.4617
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The cross-correlation between the ROSAT all-sky survey (~150000 sources) and the Tycho mission (~1000000 stars) catalogs has selected about 14000 stellar X-ray sources (RasTyc sample, Guillout et al. 1999). About 200-300 stars have been spectroscopic
Externí odkaz:
http://arxiv.org/abs/astro-ph/0610243
Autor:
Neuhaeuser, Ralph, Walter, Fred M., Covino, Elvira, Alcala, Juan M., Wolk, Scott J., Frink, Sabine, Guillout, Patrick, Sterzik, Michael, Comeron, Fernando
We present the ROSAT All-Sky Survey data in a 126 deg^2 area in and around the CrA star forming region. With low-resolution spectroscopy of unidentified ROSAT sources we could find 19 new pre-main sequence stars, two of which are classical T Tauri st
Externí odkaz:
http://arxiv.org/abs/astro-ph/0008095