Summary
As a part of a larger program to measure physical properties of PMS binary systems, we have observed the PMS quadruple system HD 98800 (aka TW Hya 4A) with the Keck Interferometer (KI), and resolved the two separate spectroscopic binary components of the system. In particular we have observed the HD 98800 North (B) binary component on multiple epochs, and integrating our data with the double-lined spectroscopic orbit from Torres et al [15]s has allowed us to estimate a physical orbit for the B system. This orbit in turn yields relatively accurate (8%) mass estimates of the component stars, and an independent system distance and component luminosity estimates. Comparisons between the estimated physical parameters for the low-mass HD 98800 B components with mass-luminosity models of PMS stars, and implications for the age of HD 98800 are discussed.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Boden, A., Creech-Eakman, M., and Queloz, D. 2000, ApJ 536, 880.
Boden et al. 2005, ApJ 635, 442.
Colavita, M. et al 2003, ApJ 592, L 83.
Franz, O., et al. 1998, AJ 116, 1432.
Hillenbrand, L. & White, R. 2004, ApJ 604, 741.
Hummel, C. et al. 2001, AJ 121, 1623.
Innes, R. 1909, Transvaal Obs. Circ 1, 1.
Koerner, D. et al 2000, ApJ 533, L 37.
Palla, F. & Stahler, S. 2001, ApJ 553, 299.
Prato, L. et al 2001, ApJ 549, 590 (P2001).
Siess L., Dufour E., & Forestini M. 2000, A&A 358, 593.
Soderblom, D. et al 1996, ApJ 460, 984.
Soderblom, D. et al 1998, ApJ 498, 385 (S98).
Tokovinin, A. 1999, Ast. Lett. 25, 669.
Torres, G. et al. 1995, ApJ 452, 870 (T95).
Walker, H. & Walstencroft, R. 1988, PASP 100, 1509.
Webb, R. et al 1999, ApJ 512, L 63.
Zuckerman, B. & Becklin, E. 1993, ApJ 406, L 25.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2007 Springer
About this paper
Cite this paper
Boden, A., Sargent, A., Akeson, R., Carpenter, J. (2007). Preliminary Physical Orbit of the HD 98800 B System. In: Richichi, A., Delplancke, F., Paresce, F., Chelli, A. (eds) The Power of Optical/IR Interferometry: Recent Scientific Results and 2nd Generation Instrumentation. Eso Astrophysics Symposia. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-74256-2_34
Download citation
DOI: https://doi.org/10.1007/978-3-540-74256-2_34
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-74253-1
Online ISBN: 978-3-540-74256-2
eBook Packages: Physics and AstronomyPhysics and Astronomy (R0)