Astronomy and Astrophysics – Astronomy
Scientific paper
May 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21441110r&link_type=abstract
American Astronomical Society, AAS Meeting #214, #411.10; Bulletin of the American Astronomical Society, Vol. 41, p.677
Astronomy and Astrophysics
Astronomy
Scientific paper
O and B stars are among the brightest stars observable in galaxies, and are often considered signs of recent star formation or used for distance estimates. However, the fundamental properties of these stars (temperature and luminosity) are poorly understood because we do not have accurate distances and diameters of nearby O and B stars. SIM Lite will be able to provide parallaxes for these bright stars accurate to 1% at a distance of 2.6 kpc. Long Baseline Optical Interferometry, from instruments such as CHARA/PAVO, can yield temperatures and luminosities accurate to 5% for these stars once the distance is known from SIM. Here we present an initial observing list for the CHARA array and the PAVO (R band) beam combiner, as well as spectral energy distributions for the sample. These SEDs will provide a direct comparison for angular diameter measurements of hot stars that will be measured with the CHARA array in the next year.
This project is supported by NASA-JPL#1349293
Aufdenberg Jason Paul
Boyajian Tabetha
CHARA
Gies Doug
Ireland Mike
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