First radius measurements of very low mass stars with the VLTI

Details First radius measurements of very low mass stars with the VLTI First radius measurements of very low mass stars with the VLTI

2002-11-29

arxiv.org/abs/astro-ph/0211647v1

Astron.Astrophys. 397 (2003) L5-L8

Astronomy and Astrophysics

Astrophysics

Accepted for publication in Astronomy and Astrophysics Letters, 4 pages, 3 figures

Scientific paper

10.1051/0004-6361:20021714

e present 4 very low mass stars radii measured with the VLTI using the 2.2 microns VINCI test instrument. The observations were carried out during the commissioning of the 104-meter-baseline with two 8-meter-telescopes. We measure angular diameters of 0.7-1.5 mas with accuracies of 0.04-0.11 mas, and for spectral type ranging from M0V to M5.5V. We determine an empirical mass-radius relation for M dwarfs based on all available radius measurements. The observed relation agrees well with theoretical models at the present accuracy level, with possible discrepancy around 0.5-0.8 Msolar that needs to be confirmed. In the near future, dozens of M dwarfs radii will be measured with 0.1-1% accuracy, with the VLTI, thanks to the improvements expected from the near infrared instrument AMBER. This will bring strong observational constraints on both atmosphere and interior physics.

Affiliated with

Also associated with

No associations

Rating

First radius measurements of very low mass stars with the VLTI 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 First radius measurements of very low mass stars with the VLTI, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and First radius measurements of very low mass stars with the VLTI will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-91257