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Spitzer IRS Observations of Class I/II Objects in Taurus: Composition and Thermal History of the Circumstellar Ices
G. Zasowski, F. Kemper, Dan M. Watson +4
We present observations of Taurus-Auriga Class I/II protostars obtained with the Spitzer InfraRed Spectrograph. Detailed spectral fits to the 6 and 15 micron features are made, usi…
Spitzer IRS Spectra and Envelope Models of Class I Protostars in Taurus
E. Furlan, M. McClure, N. Calvet +8
We present Spitzer Infrared Spectrograph spectra of 28 Class I protostars in the Taurus star-forming region. The 5 to 36 micron spectra reveal excess emission from the inner region…
Probing the Dust and Gas in the Transitional Disk of CS Cha with Spitzer
Catherine Espaillat, Nuria Calvet, Paola D'Alessio +10
Here we present the Spitzer IRS spectrum of CS Cha, a member of the ~2 Myr old Chamaeleon star-forming region, which reveals an optically thick circumstellar disk truncated at ~43…
Hubble and Spitzer Observations of an Edge-on Circumstellar Disk around a Brown Dwarf
K. L. Luhman, Lucia Adame, Paola D'Alessio +7
We present observations of a circumstellar disk that is inclined close to edge-on around a young brown dwarf in the Taurus star-forming region. Using data obtained with SpeX at the…
HD 98800: A 10-Myr-Old Transition Disk
E. Furlan, B. Sargent, N. Calvet +7
We present the mid-infrared spectrum, obtained with the Spitzer Infrared Spectrograph (IRS), of HD 98800, a quadruple star system located in the 10-Myr-old TW Hydrae association. I…
Crystalline silicates and dust processing in the protoplanetary disks of the Taurus young cluster
Dan M. Watson, Jarron M. Leisenring, Elise Furlan +15
We characterize the crystalline silicate content and spatial distribution of small dust grains in a large sample of protoplanetary disks in the Taurus-Auriga young cluster, using S…