Proper Motions as an Underutilized Tool for Estimating Distances and Ages for Nearby, Young Stars

Details Proper Motions as an Underutilized Tool for Estimating Distances and Ages for Nearby, Young Stars Proper Motions as an Underutilized Tool for Estimating Distances and Ages for Nearby, Young Stars

2005-02-23

arxiv.org/abs/astro-ph/0502489v1

ASP Conf.Ser. 338 (2005) 280

Astronomy and Astrophysics

Astrophysics

4 pages, 1 figure, ASP Conf. Series "Astrometry in the Age of the Next Generation of Large Telescopes", eds. P.K. Seidelmann &

Scientific paper

The recent availability of accurate proper motion catalogs for millions of stars on the sky (e.g. Tycho-2, UCAC) can benefit projects for which age estimates are needed for stars that are plausibly young (<100 Myr-old) and within a few hundred pc of the Sun. Here I summarize how accurate proper motions have been useful in (1) identifying new, nearby, post-T Tauri star populations, and (2) estimating distances to young field stars which are lacking trigonometric parallax measurements. The later enables the calculation of stellar luminosities and isochronal ages -- two quantities critical for investigations of the evolution of star/planet/disk systems.

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