Masses and Distance of the Young Binary NTTS 045251+3016
Abstract
As part of our continuing campaign to measure the masses of pre-main-sequence (PMS) stars dynamically and thus to assess the reliability of the discrepant theoretical calculations of contraction to the main sequence, we present new results for NTTS 045251+3016, a visual and double-lined spectroscopic binary in the Taurus star-forming region (SFR). We obtained new high angular resolution astrometry and high spectral resolution spectroscopy at Keck Observatory. The new data lead to a significant revision of previously published orbital parameters. In particular, we find that the masses of the primary and secondary are 0.86 ± 0.11 and 0.55 ± 0.05 M ⊙, respectively, smaller than previously reported, and that the system lies 158.7 ± 3.9 pc from the sun, further than previously reported.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- August 2013
- DOI:
- 10.1088/0004-637X/773/1/28
- arXiv:
- arXiv:1306.4393
- Bibcode:
- 2013ApJ...773...28S
- Keywords:
-
- binaries: visual;
- stars: fundamental parameters;
- stars: individual: NTTS 045251+3016;
- stars: pre-main sequence;
- Astrophysics - Solar and Stellar Astrophysics
- E-Print:
- 36pp