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Proceedings Paper

Mass-luminosity relation and space-based interferometry: from Hubble Space Telescope to the Space Interferometry Mission
Author(s): G. Fritz Benedict; Todd J. Henry; Barbara E. McArthur; Douglas R. Gies; David A. Golimowski; Philip A. Ianna; Brian D. Mason; Edmund P. Nelan; Guillermo Torres
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Paper Abstract

With a white-light interferometer (Fine Guidance Sensor 3) on the Hubble Space Telescope (HST) we have secured fringe scanning and fringe tracking observations to measure distances, orbits, and, hence, masses, for several nearby low-mass stars. We have made progress towards a more precise Mass-Luminosity Relation (MLR) for the lower Main Sequence. However, the MLR is a map whose low mass region is complicated by relative and absolute age and whose high-mass end is very poorly determined. To begin to disentangle these effects, and to obtain high-precision mass determinations throughout the Main Sequence, we will participate in the Space Interferometry Mission (SIM) to observe binary stars of all masses in five star clusters with a large range of well-known ages and chemical compositions. We will also observe a sample of stars throughout the Main Sequence. The unparalleled angular resolution and limiting magnitude of SIM will allow us to obtain masses precise to 1%.

Paper Details

Date Published: 26 February 2003
PDF: 10 pages
Proc. SPIE 4852, Interferometry in Space, (26 February 2003); doi: 10.1117/12.460708
Show Author Affiliations
G. Fritz Benedict, McDonald Observatory/Univ. of Texas, Austin (United States)
Todd J. Henry, CHARA/Georgia State Univ. (United States)
Barbara E. McArthur, McDonald Observatory/Univ. of Texas, Austin (United States)
Douglas R. Gies, CHARA/Georgia State Univ. (United States)
David A. Golimowski, Johns Hopkins Univ. (United States)
Philip A. Ianna, Univ. of Virginia (United States)
Brian D. Mason, U.S. Naval Observatory (United States)
Edmund P. Nelan, Space Telescope Science Institute (United States)
Guillermo Torres, Harvard-Smithsonian Ctr. for Astrophysics (United States)

Published in SPIE Proceedings Vol. 4852:
Interferometry in Space
Michael Shao, Editor(s)

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