Publications (21)
A Dynamical Mass Constraint for Pre-Main-Sequence Evolutionary Tracks: The Binary NTT 045251+3016
A. T. Steffen, R. D. Mathieu, M. G. Lattanzi +6
We present an astrometric/spectroscopic orbital solution for the pre-main-sequence binary NTT 045251+3016. Our measurements for the primary and secondary masses are 1.45 +/- 0.19 M…
Report of IAU Commission 30 on Radial Velocities (2009-2012)
G. Torres, H. Levato, C. Lovis +11
Brief summaries are given of the following subjects of interest to IAU Commission 30: Large-scale radial-velocity surveys; The role of radial-velocity measurements in studies of st…
Near-Infrared Light Curves of the Brown Dwarf Eclipsing Binary 2MASS J05352184-0546085: Can Spots Explain the Temperature Reversal?
Y. Gómez Maqueo Chew, K. G. Stassun, A. Prsa +1
We present the JHKs light curves for the double-lined eclipsing binary 2MASS J05352184-0546085, in which both components are brown dwarfs. We analyze these light curves with the pu…
Luminosity Discrepancy in the Equal-Mass, Pre--Main Sequence Eclipsing Binary Par 1802: Non-Coevality or Tidal Heating?
Y. Gómez Maqueo Chew, K. G. Stassun, A. Prša +5
Parenago 1802, a member of the ~1 Myr Orion Nebula Cluster, is a double-lined, detached eclipsing binary in a 4.674 d orbit, with equal-mass components (M_2/M_1 = 0.985 \pm 0.029).…
The Effect of Binarity on Stellar Rotation - Beyond the Reach of Tides
S. Meibom, R. D. Mathieu, K. G. Stassun
We present a comparison between the rotation period distributions of solar-type single stars and primary stars in close binaries (0.1 AU ~< a ~< 5 AU) in the young (150 Myr) open c…
X-Ray Sources in Regions of Star Formation. VI. The R CrA Association as Viewed by EINSTEIN
F. M. Walter, F. J. Vrba, S. J. Wolk +2
We report on optical identifications of X-ray sources in the vicinity of the R~CrA association. We identify 11 low-mass pre-main-sequence stars as counterparts of 9 X-ray sources.…