Masses and Distance of the Young Binary NTTS 045251+3016
| Autor: | Simon, M., Schaefer, G. H., Prato, L., Ruiz-Rodriguez, Dary, Karnath, N., Franz, O. G., Wasserman, L. H. |
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| Rok vydání: | 2013 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1088/0004-637X/773/1/28 |
| Popis: | As part of our continuing campaign to measure the masses of pre-main sequence 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. 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_sun, respectively, smaller than previously reported, and that the system lies 158.7+/-3.9 pc from the sun, further than previously reported. Comment: 36pp; accepted for publication in the ApJ |
| Databáze: | arXiv |
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