Testing Pre-Main-Sequence Stellar Evolution Theory: Discovery and Analysis of a Young, Low-Mass Eclipsing Binary

Details Testing Pre-Main-Sequence Stellar Evolution Theory: Discovery and Analysis of a Young, Low-Mass Eclipsing Binary Testing Pre-Main-Sequence Stellar Evolution Theory: Discovery and Analysis of a Young, Low-Mass Eclipsing Binary

May 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aas...200.7109s&link_type=abstract

American Astronomical Society, 200th AAS Meeting, #71.09; Bulletin of the American Astronomical Society, Vol. 34, p.761

Other

Scientific paper

We present a preliminary analysis of a previously unknown, low-mass, pre-main-sequence (PMS), double-lined spectroscopic, eclipsing binary system in Orion. Eclipsing binaries provide powerful tests of stellar evolutionary models because stellar masses and radii are determined in a distance-independent way. Only four other PMS eclipsing binaries are presently known. We present WIYN and HET spectroscopy from which we determine a double-lined orbit solution. We also present multi-epoch, multi-band photometric light curves which we model to derive key system parameters such as inclination and the ratio of stellar effective temperatures. With the addition of T eff for the primary (determined from our HET spectra), all system parameters are determined. The primary and secondary masses are measured to be 1.0 Msun and 0.7 Msun, respectively. Thus the secondary in this system is the lowest mass star yet discovered in a PMS eclipsing binary. We also give an update on our program to discover and analyze additional PMS eclipsing binaries as sensitive tests of PMS stellar evolution, particularly among very low-mass stars.

Affiliated with

Also associated with

No associations

Rating

Testing Pre-Main-Sequence Stellar Evolution Theory: Discovery and Analysis of a Young, Low-Mass Eclipsing Binary 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 Testing Pre-Main-Sequence Stellar Evolution Theory: Discovery and Analysis of a Young, Low-Mass Eclipsing Binary, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Testing Pre-Main-Sequence Stellar Evolution Theory: Discovery and Analysis of a Young, Low-Mass Eclipsing Binary will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1720187