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On-sky wide field adaptive optics correction using multiple laser guide stars at the MMT
Christoph Baranec, Michael Hart, N. Mark Milton +6
We describe results from the first astronomical adaptive optics system to use multiple laser guide stars, located at the 6.5-m MMT telescope in Arizona. Its initial operational mod…
An Imaging Survey for Extrasolar Planets around 45 Close, Young Stars with SDI at the VLT and MMT
Beth A. Biller, Laird M. Close, Elena Masciadri +11
We present the results of a survey of 45 young (<250 Myr), close (<50 pc) stars with the Simultaneous Differential Imager (SDI) implemented at the VLT and the MMT for the direct de…
Dust Stratification in Young Circumstellar Disks
T. Rettig, S. Brittain, Theodore Simon +4
We present high-resolution infrared spectra of four YSOs (T Tau N, T Tau S, RNO 91, and HL Tau). The spectra exhibit narrow absorption lines of 12CO, 13CO, and C18O as well as broa…
Deep Near-Infrared Observations of L1014: Revealing the nature of the core and its embedded source
T. L. Huard, P. C. Myers, D. C. Murphy +7
Recently, the Spitzer Space Telescope discovered L1014-IRS, a mid-infrared source with protostellar colors, toward the heretofore "starless" core L1014. We present deep near-infrar…
CO Line Emission and Absorption from the HL Tau Disk: Where is all the dust?
S. Brittain, T. Rettig, T. Simon +1
We present high-resolution infrared spectra of HL Tau, a heavily embedded young star. The spectra exhibit broad emission lines of hot CO gas as well as narrow absorption lines of c…
Optical and Infrared Photometry of the Type Ia Supernovae 1991T, 1991bg, 1999ek, 2001bt, 2001cn, 2001cz, and 2002bo
Kevin Krisciunas, Nicholas B. Suntzeff, Mark M. Phillips +28
We present optical and/or infrared photometry of the Type Ia supernovae SN 1991T, SN 1991bg, SN 1999ek, SN 2001bt, SN 2001cn, SN 2001cz, and SN 2002bo. All but one of these superno…