2MASS observations of Be stars (Zhang+, 2005)

Details 2MASS observations of Be stars (Zhang+, 2005) 2MASS observations of Be stars (Zhang+, 2005)

Jun 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006ycatp022001001z&link_type=abstract

VizieR On-line Data Catalog: J/other/NewA/10.325. Originally published in: 2005NewA...10..325Z

Other

Stars: Emission, Stars: Be, Photometry: Infrared

Scientific paper

A catalogue of almost all known Galactic Be stars in the 2MASS () database (1185 in total) and in the MSX () database (225 in total) is presented in this paper. From the color-color diagrams and spectral indexes, it is found that the IR excesses for many samples are due to free-free and free-bound emission from the ionized material around a Be star as suggested previously and that the mean spectral index derived for the samples is 1.50+/-0.34 between J to K bands and 1.14+/-0.42 between K to A bands, respectively. However, it is also found that there are eight Be stars that have large near infrared excess emission with spectral index values outside the range expected for freefree and freebound emission. This is likely attributed to circumstellar dust emission.
(1 data file).

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