Details

Autor(en) / Beteiligte

• Simon, M
• Schaefer, G H
• Prato, L
• Ruiz-Rodriguez, Dary
• Karnath, N
• Franz, O G
• WASSERMAN, L h

Titel

MASSES AND DISTANCE OF THE YOUNG BINARY NTTS 045251+3016

Ist Teil von

• The Astrophysical journal, 2013-08, Vol.773 (1), p.1-11

Ort / Verlag

United States

Erscheinungsjahr

2013

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• 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 + or - 0.11 and 0.55 + or - 0.05 M sub([middot in circle]), respectively, smaller than previously reported, and that the system lies 158.7 + or - 3.9 pc from the sun, further than previously reported.