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A New Method to Identify Nearby, Young, Low-mass Stars by Rodriguez, David R.; Bessell, M. S.; Zuckerman, B.; Kastner, Joel H. is a scholarly article available to read on EtoBox.

What is A New Method to Identify Nearby, Young, Low-mass Stars about?

We describe a new method to identify young, late-type stars within ~150 pc of the Earth that employs visual or near-infrared data and the GALEX GR4/5 database. For spectral types later than K5, we demonstrate that the ratio of GALEX near-ultraviolet (NUV) to visual and near-IR emission is larger for stars with ages between 10 and 100 Myr than for older, main sequence stars. A search in regions of the sky encompassing the TW Hya and Scorpius-Centaurus Associations has returned 54 high-quality candidates for followup. Spectroscopic observations of 24 of these M1-M5 objects reveal Li 6708 angstrom absorption in at least 17 systems. Because GALEX surveys have covered a significant fraction of the sky, this methodology should prove valuable for future young star studies.

Author

Rodriguez, David R.; Bessell, M. S.; Zuckerman, B.; Kastner, Joel H.

Published

2010

Language

EN