Journal
ASTROPHYSICAL JOURNAL
Volume 727, Issue 2, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0004-637X/727/2/62
Keywords
open clusters and associations: individual (Lower Centaurus Crux, Upper Centaurus Lupus, TW Hydrae); stars: evolution; stars: pre-main sequence; ultraviolet: stars
Categories
Funding
- National Aeronautics and Space Administration [NNX09AC96G]
- National Science Foundation
Ask authors/readers for more resources
We describe a new method to identify young, late-type stars within similar to 150 pc of the Earth that employs visual or near-infrared (NIR) data and the GALEX GR4/5 database. For spectral types later than K5, we demonstrate that the ratio of GALEX near-ultraviolet to visual and NIR 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 follow up. 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.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available