Astronomy and Astrophysics – Astrophysics
Scientific paper
2007-08-15
Astronomy and Astrophysics
Astrophysics
24 pages, 3 pages, AASTEX format, accepted for publication in ApJ
Scientific paper
10.1086/522493
In this article, we present the results of a series of twelve 3.6-cm radio continuum observations of T Tau Sb, one of the companions of the famous young stellar object T Tauri. The data were collected roughly every two months between September 2003 and July 2005 with the Very Long Baseline Array (VLBA). Thanks to the remarkably accurate astrometry delivered by the VLBA, the absolute position of T Tau Sb could be measured with a precision typically better than about 100 micro-arcseconds at each of the twelve observed epochs. The trajectory of T Tau Sb on the plane of the sky could, therefore, be traced very precisely, and modeled as the superposition of the trigonometric parallax of the source and an accelerated proper motion. The best fit yields a distance to T Tau Sb of 147.6 +/- 0.6 pc. The observed positions of T Tau Sb are in good agreement with recent infrared measurements, but seem to favor a somewhat longer orbital period than that recently reported by Duchene et al. (2006) for the T Tau Sa/T Tau Sb system.
Gonzalez Erandy
González-Lópezlira Rosa A.
Lachaume Régis
Loinard Laurent
Miguel Torres R.
No associations
LandOfFree
VLBA determination of the distance to nearby star-forming regions I. The distance to T Tauri with 0.4% accuracy 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 VLBA determination of the distance to nearby star-forming regions I. The distance to T Tauri with 0.4% accuracy, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and VLBA determination of the distance to nearby star-forming regions I. The distance to T Tauri with 0.4% accuracy will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-381152