Infrared Properties of Late - Type Stars Provided by the First Byurakan Spectral Sky Survey. The Nature of the Red Objects

Details Infrared Properties of Late - Type Stars Provided by the First Byurakan Spectral Sky Survey. The Nature of the Red Objects Infrared Properties of Late - Type Stars Provided by the First Byurakan Spectral Sky Survey. The Nature of the Red Objects

Jul 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005ap.....48..321g&link_type=abstract

Astrophysics, Volume 48, Issue 3, pp.321-329

Astronomy and Astrophysics

Astrophysics

1

Stars, Infrared Colours, Proper Motions, Key Words Stars - Infrared Colours - Stars - Proper Motions

Scientific paper

Using modern astronomical databases, particularly 2MASS All - Sky Data Release Point Source Catalog and USNO-B1.0 catalog, we investigate the properties of about 840 FBS red stars in order to clarifiy their nature. We use and analyse their JHK 2MASS photometry, together with the R-band magnitudes and the proper motions provided by USNO - B1.0. Approximately 70% of all objects appear to be Asymptotic Giant Branch stars, 18% are giants, and close to 12% are objects with detectable proper motions, allowing to consider them as dwarf M-type stars. When plotted in a J - K versus R - K colour-colour diagram, one finds that objects with proper motions are well separated into a narrow belt.

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