Zobrazeno 1 - 10
of 566
pro vyhledávání: '"Quast, G. R."'
Autor:
Zúñiga-Fernández, S., Bayo, A., Elliott, P., Zamora, C., Corvalán, G., Haubois, X., Corral-Santana, J. M., Olofsson, J., Huélamo, N., Sterzik, M. F., Torres, C. A. O., Quast, G. R., Melo, C. H. F.
Publikováno v:
A&A 645, A30 (2021)
We seek to update the spectroscopy binary fraction of the SACY (Search for Associations Containing Young stars) sample taking in consideration all possible biases in our identification of binary candidates, such as activity and rotation. Using high-r
Externí odkaz:
http://arxiv.org/abs/2010.08575
Autor:
Elliott, P., Bayo, A., Melo, C. H. F., Torres, C. A. O., Sterzik, M. F., Quast, G. R., Montes, D., Brahm, R.
Publikováno v:
A&A 590, A13 (2016)
The young associations offer us one of the best opportunities to study the properties of young stellar and substellar objects and to directly image planets thanks to their proximity ($<$200 pc) and age ($\approx$5-150 Myr). However, many previous wor
Externí odkaz:
http://arxiv.org/abs/1604.03550
To analyze the SACY (Search for Associations Containing Young stars) survey we developed a method to find young associations and to define their high probability members. These bona fide members enable to obtain the kinematical and the physical prope
Externí odkaz:
http://arxiv.org/abs/1510.03067
Autor:
Elliott, P., Huelamo, N., Bouy, H., Bayo, A., Melo, C. H. F., Torres, C. A. O., Sterzik, M. F., Quast, G. R., Chauvin, G., Barrado, D.
Publikováno v:
A&A 580, A88 (2015)
Context. Young loose nearby associations are unique samples of close (<150 pc), young (approx 5-100 Myr) pre-main sequence (PMS) stars. A significant number of members of these associations have been identified in the SACY collaboration. We can use t
Externí odkaz:
http://arxiv.org/abs/1505.07837
Publikováno v:
A&A 568, A26 (2014)
Context: Dynamically undisrupted, young populations of stars are crucial to study the role of multiplicity in relation to star formation. Loose nearby associations provide us with a great sample of close ($<$150 pc) Pre-Main Sequence (PMS) stars acro
Externí odkaz:
http://arxiv.org/abs/1406.2323
Autor:
De Silva, G. M., D'Orazi, V., Melo, C., Torres, C. A. O., Gieles, M., Quast, G. R., Sterzik, M.
We explore the possible connection between the open cluster IC 2391 and the unbound Argus association identified by the SACY survey. In addition to common kinematics and ages between these two systems, here we explore their chemical abundance pattern
Externí odkaz:
http://arxiv.org/abs/1301.5967
Our study is a follow-up of the SACY project, an extended survey in the Southern Hemisphere targeted to search for young nearby associations. Nine associations have either been newly identified, or had their member list better defined. These associat
Externí odkaz:
http://arxiv.org/abs/0909.0677
Autor:
Almeida, P. Viana, Santos, N. C., Melo, C., Eiff, M. Ammler-von, Torres, C. A. O., Quast, G. R., Gameiro, J. F., Sterzik, M.
The recently discovered coeval, moving groups of young stellar objects in the solar neighborhood represent invaluable laboratories to study recent star formation and to search for high metallicity stars which can be included in future exo-planet surv
Externí odkaz:
http://arxiv.org/abs/0904.1221
Autor:
Huelamo, N., Vaz, L. P. R., Torres, C. A. O., Bergeron, P., Melo, C. H. F., Quast, G. R., Navascues, D. Barrado y, Sterzik, M. F., Chauvin, G., Bouy, H., Landin, N. R.
HIP96515A is a double-lined spectroscopic binary with a visual companion (HIP96515B) at 8.6 arcsec. It is included in the SACY catalog as a potential young star and classified as an eclipsing binary in the ASAS Catalog. We have analyzed spectroscopic
Externí odkaz:
http://arxiv.org/abs/0902.0305
We report results from a high-resolution optical spectroscopic survey aimed to search for nearby young associations and young stars among optical counterparts of ROSAT All-Sky Survey X-ray sources in the Southern Hemisphere. We selected 1953 late-typ
Externí odkaz:
http://arxiv.org/abs/astro-ph/0609258