Preliminary orbit of the young binary haro 1-14c

G. H. Schaefer, M. Simon, L. Prato, Travis S Barman

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Using the Keck Interferometer, we spatially resolved the orbit of the pre-main-sequence (PMS) binary, Haro 1-14c, for the first time. We present these interferometric observations along with additional spectroscopic radial velocity measurements of the components. We performed a simultaneous orbit fit to the interferometric visibilities and the radial velocities of Haro 1-14c. Based on a statistical analysis of the possible orbital solutions that fit the data, we determined component masses of M 1 = 0.96+0.27 -0.08 M and M 2 = 0.33+0.09 -0.02 M for the primary and secondary, respectively, and a distance to the system of 111+19 -18 pc. The distance measurement is consistent with the close distance estimates of the Ophiuchus molecular cloud. Comparing our results with evolutionary tracks suggests an age of 3-4 Myr for Haro 1-14c. With additional interferometric measurements to improve the uncertainties in the masses and distance, we expect the low-mass secondary to provide important empirical data for calibrating the theoretical evolutionary tracks for PMS stars.

Original languageEnglish (US)
Pages (from-to)1659-1668
Number of pages10
JournalAstronomical Journal
Volume135
Issue number5
DOIs
StatePublished - May 1 2008
Externally publishedYes

Fingerprint

orbits
radial velocity
interferometer
visibility
pre-main sequence stars
statistical analysis
calibrating
molecular clouds
velocity measurement
interferometers
orbitals
young
estimates

Keywords

  • Binaries: spectroscopic
  • Binaries: visual
  • Stars: fundamental parameters
  • Stars: individual (Haro 1-14c)
  • Stars: pre-main sequence
  • Techniques: interferometric

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Preliminary orbit of the young binary haro 1-14c. / Schaefer, G. H.; Simon, M.; Prato, L.; Barman, Travis S.

In: Astronomical Journal, Vol. 135, No. 5, 01.05.2008, p. 1659-1668.

Research output: Contribution to journalArticle

Schaefer, G. H. ; Simon, M. ; Prato, L. ; Barman, Travis S. / Preliminary orbit of the young binary haro 1-14c. In: Astronomical Journal. 2008 ; Vol. 135, No. 5. pp. 1659-1668.
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KW - Stars: individual (Haro 1-14c)

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KW - Techniques: interferometric

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