SIMBAD references

2007ApJ...667..527G - Astrophys. J., 667, 527-536 (2007/September-3)

Far-infrared properties of M dwarfs.

GAUTIER III T.N., RIEKE G.H., STANSBERRY J., BRYDEN G.C., STAPELFELDT K.R., WERNER M.W., BEICHMAN C.A., CHEN C., SU K., TRILLING D., PATTEN B.M. and ROELLIG T.L.

Abstract (from CDS):

We report the mid- and far-infrared properties of nearby M dwarfs. Spitzer MIPS measurements were obtained for a sample of 62 stars at 24 µm, with subsamples of 41 and 20 stars observed at 70 and 160 µm, respectively. We compare the results with current models of M star photospheres and look for indications of circumstellar dust in the form of significant deviations of K-[24 µm] colors and 70 µm/24 µm flux ratios from the average M star values. At 24 µm, all 62 of the targets were detected; 70 µm detections were achieved for 20 targets in the subsample observed, and no detections were seen in the 160 µm subsample. No clear far-infrared excesses were detected in our sample. The average far-infrared excess relative to the photospheric emission of the M stars is at least 4 times smaller than the similar average for a sample of solar-type stars. However, this limit allows the average fractional infrared luminosity in the M-star sample to be similar to that for more massive stars. We have also set low limits (10–4 to 10–9 M depending on location) for the maximum mass of dust possible around our stars.

Abstract Copyright:

Journal keyword(s): Infrared: Stars - Stars: Planetary Systems - stars: fundamental parameters (colors) - Stars: Late-Type

Simbad objects: 76

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2019.10.22-02:01:07

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