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Morphological Evolution of Outflows from YSOs
Jonathan P. Seale, Leslie W. Looney
We present Spitzer IRAC images that indicate the presence of cavities cut into the dense outer envelope surrounding very young pre-main sequence stars. These young stellar objects…
A Flattened Protostellar Envelope in Absorption around L1157
Leslie Looney, John Tobin, Woojin Kwon
Deep Spitzer IRAC images of L1157 reveal many of the details of the outflow and the circumstellar environment of this Class 0 protostar. In IRAC band 4, 8 microns, there is a flatt…
Dense Molecular Gas In A Young Cluster Around MWC 1080 -- Rule Of The Massive Star
Shiya Wang, Leslie W. Looney, Wolfgang Brandner +1
We present CS , CO , and CO , observations with the 10-element Berkeley Illinois Maryland Association (BIMA) Array toward the y…
Kinematics and Chemistry of the Hot Molecular Core in G34.26+0.15 at High Resolution
B. Mookerjea, E. Casper, L. G. Mundy +2
(abridged) We present high angular resolution (~ 1") multi-tracer spectral line observations toward the hot core associated with G34.26+0.15 between 87--109 GHz. We have mapped emi…
Imaging Scattered Light from the Youngest Protostars in L1448: Signatures of Outflows
John J. Tobin, Leslie W. Looney, Lee G. Mundy +2
We present deep IRAC images that highlight the scattered light emission around many of the youngest protostars, the so-called Class 0 sources, in L1448. By comparison of the data w…
Young Stellar Groups Around Herbig Ae/Be Stars: A Low-Mass YSO Census
Shiya Wang, Leslie W. Looney
We present NIR and MIR observations of eight embedded young stellar groups around Herbig Ae/Be stars (HAEBEs) using archived Spitzer IRAC data and 2MASS data. These young stellar g…