Dynamical Masses for Pre-Main Sequence Stars: A Preliminary Physical Orbit for V773 Tau A

Details Dynamical Masses for Pre-Main Sequence Stars: A Preliminary Physical Orbit for V773 Tau A Dynamical Masses for Pre-Main Sequence Stars: A Preliminary Physical Orbit for V773 Tau A

2007-06-15

arxiv.org/abs/0706.2376v1

Astronomy and Astrophysics

Astrophysics

ApJ in press; 25 pages, 6 figures; data tables available in journal version

Scientific paper

10.1086/521296

We report on interferometric and radial-velocity observations of the double-lined 51-d period binary (A) component of the quadruple pre-main sequence (PMS) system V773 Tau. With these observations we have estimated preliminary visual and physical orbits of the V773 Tau A subsystem. Among other parameters, our orbit model includes an inclination of 66.0 $\pm$ 2.4 deg, and allows us to infer the component dynamical masses and system distance. In particular we find component masses of 1.54 $\pm$ 0.14 and 1.332 $\pm$ 0.097 M$_{\sun}$ for the Aa (primary) and Ab (secondary) components respectively. Our modeling of the subsystem component spectral energy distributions finds temperatures and luminosities consistent with previous studies, and coupled with the component mass estimates allows for comparison with PMS stellar models in the intermediate-mass range. We compare V773 Tau A component properties with several popular solar-composition models for intermediate-mass PMS stars. All models predict masses consistent to within 2-sigma of the dynamically determined values, though some models predict values that are more consistent than others.

Affiliated with

Also associated with

No associations

Rating

Dynamical Masses for Pre-Main Sequence Stars: A Preliminary Physical Orbit for V773 Tau A 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 Dynamical Masses for Pre-Main Sequence Stars: A Preliminary Physical Orbit for V773 Tau A, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dynamical Masses for Pre-Main Sequence Stars: A Preliminary Physical Orbit for V773 Tau A will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-468023