Parallax Observations of Local Supergiants

Details Parallax Observations of Local Supergiants Parallax Observations of Local Supergiants

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21345506j&link_type=abstract

American Astronomical Society, AAS Meeting #213, #455.06; Bulletin of the American Astronomical Society, Vol. 41, p.355

Astronomy and Astrophysics

Astrophysics

Scientific paper

We are about to enter an era of micro-arcsecond astrometry in the coming decade. All these high accuracy astrometry missions, like GAIA, Space Interferometry Mission (SIM), Large Synoptic Survey Telescope (LSST) , Pan-STARRS or SkyMapper can reach stars much fainter than those in the Hipparcos and Yale parallax catalog. However, because of the magnitude limit of these missions, stars brighter than V=6 will be obsoleted by all missions but SIM. SIM offers unique opportunities to measure the first-ever meaningful parallaxes to a few micro-arcsecond precision for all these bright stars, especially for those supergiants at a few Kpc away. I discuss how SIM can provide accurate supergiant luminosities and what fundamental breakthroughs will it have in stellar astrophysics.

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