Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21934508d&link_type=abstract
American Astronomical Society, AAS Meeting #219, #345.08
Astronomy and Astrophysics
Astronomy
Scientific paper
Accurate placement in an HR diagram is necessary for the characterization of any stellar, or substellar, population. Here we extend the coverage of optical/IR color-magnitude diagrams to provide a continuous sequence for stars like the Sun through the mid L spectral sub-types. We present new trigonometric parallaxes obtained at the CTIO 0.9m telescope through the RECONS (REsearch Consortium On Nearby Stars, www.recons.org) astrometry program, and new VRI photometry obtained at the CTIO 0.9m and SOAR 4m telescopes. We demonstrate how optical/IR color combinations, in particular (V-K), are useful in breaking the degeneracies in color-magnitude diagrams containing only IR colors. One of the key results of this work is a set of improved color-absolute magnitude relations that can be used to make accurate distance estimates for objects straddling the hydrogen-burning limit. We also discuss objects thought to be young, multiple, or metal poor based on their outlying locations in the sequence.
This effort is supported by the NSF through grant AST-0908402, via observations made possible by the SMARTS Consortium, and is based in
part on observations obtained at the Southern Astrophysical Research
(SOAR) telescope, which is a joint project of the Brazilian Ministry of Science and Technology, the U.S. National Optical Astronomy Observatory, the University of North Carolina at Chapel Hill, and Michigan State University.
Dieterich Sergio
Henry Todd J.
Hosey Altonio D.
Jao W.
RECONS
No associations
LandOfFree
The Optical-IR Color-Magnitude Sequence Around the Hydrogen Burning Mass Limit: Optical Photometry and Trigonometric Parallaxes for Nearby M and L Dwarfs does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The Optical-IR Color-Magnitude Sequence Around the Hydrogen Burning Mass Limit: Optical Photometry and Trigonometric Parallaxes for Nearby M and L Dwarfs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Optical-IR Color-Magnitude Sequence Around the Hydrogen Burning Mass Limit: Optical Photometry and Trigonometric Parallaxes for Nearby M and L Dwarfs will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1581542