SIMBAD references

2008ApJ...673L.181M - Astrophys. J., 673, L181-L184 (2008/February-1)

Evolution of mid-infrared excess around Sun-like stars: constraints on models of terrestrial planet formation.

MEYER M.R., CARPENTER J.M., MAMAJEK E.E., HILLENBRAND L.A., HOLLENBACH D., MORO-MARTIN A., KIM J.S., SILVERSTONE M.D., NAJITA J., HINES D.C., PASCUCCI I., STAUFFER J.R., BOUWMAN J. and BACKMAN D.E.

Abstract (from CDS):

We report observations from the Spitzer Space Telescope regarding the frequency of 24 µm excess emission toward Sun-like stars. Our unbiased sample is composed of 309 stars with masses 0.7-2.2 M and ages from <3 Myr to >3 Gyr that lack excess emission at wavelengths ≤8 µm. We identify 30 stars that exhibit clear evidence of excess emission from the observed 24 µm/8 µm flux ratio. The implied 24 µm excesses of these candidate debris disk systems range from 13% (the minimum detectable) to more than 100% compared to the expected photospheric emission. The frequency of systems with evidence for dust debris emitting at 24 µm ranges from 8.5%-19% at ages <300 Myr to <4% for older stars. The results suggest that many, perhaps most, Sun-like stars might form terrestrial planets.

Abstract Copyright:

Journal keyword(s): Stars: Circumstellar Matter - Infrared: Stars - Stars: Planetary Systems: Formation

Simbad objects: 33

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