MOMIE: MIKE Observations of Mid-Infrared Excesses

Details MOMIE: MIKE Observations of Mid-Infrared Excesses MOMIE: MIKE Observations of Mid-Infrared Excesses

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...20921917u&link_type=abstract

2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #219.17; Bulletin of the American Astronomical Society,

Astronomy and Astrophysics

Astronomy

Scientific paper

We have identified 36 B8--K main-sequence stars that exhibit a midbut not a near infrared excess from the Spitzer Space Telescope's Galactic Legacy Infrared Mid-Plane Survey Extraordinaire (GLIMPSE; Benjamin et al. 2003) and Mid-Course Space Experiment (MSX; Egan 2003) (Uzpen et al. 2006). We have obtained MIKE echelle observations of 15 of these objects. These sources have disk components ranging in temperature from 190-800 K and fractional infrared luminosity from 5.2x10^-4 1.3x10^-2. We also obtained observations of 5 of the 6 sources that exhibited a near-IR and mid-IR excess. These sources range in disk temperature 400-580 K and fractional infrared luminosity from 5.8x10^-2 2.0x10^-1. We highlight what the high resolution spectra for these sources reveals in terms of rotational velocities, gas accretion signatures, and stellar ages of mid-IR excess stars with putative circumstellar disks.

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