Astronomy and Astrophysics – Astrophysics
Scientific paper
2007-03-30
Astronomy and Astrophysics
Astrophysics
6 pages, Research Note accepted for publication in A&A
Scientific paper
10.1051/0004-6361:20077079
delta Velorum is a nearby (24pc) triple stellar system, containing a close, eclipsing binary (Aa, Ab) discovered in 2000. Multiple systems provide an opportunity to determine the set of fundamental parameters (mass, luminosity, size and chemical composition) of coeval stars. These parameters can be obtained with particular precision in the case of eclipsing binaries; for delta Velorum's components (Aa, Ab) this potential has however not yet been exploited. We have analyzed interferometric observations of the close binary (Aa, Ab), obtained with the VINCI instrument and two VLTI siderostats. The measurements, which resolve the two components for the first time, are fitted onto the simple model of two uniformly bright, spherical stars. The observations suggest that Aa and Ab have larger diameters than expected if they were on the main sequence, and that they are, thus, in a later evolutionary state.
Coudé du Foresto Vincent
Kellerer Aglae
Kervella Pierre
Petr-Gotzens Monika G.
No associations
LandOfFree
Interferometric observations of the multiple stellar system delta Velorum does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Interferometric observations of the multiple stellar system delta Velorum, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Interferometric observations of the multiple stellar system delta Velorum will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-650236