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Title:
Smith's Cloud (HVC) in 21 cm HI emission
Authors:
Heroux, A. J.
Affiliation:
AA(University of Wisconsin Whitewater)
Publication:
2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #172.13; Bulletin of the American Astronomical Society, Vol. 38, p.1149
Publication Date:
12/2006
Origin:
AAS
Bibliographic Code:
2006AAS...20917213H

Abstract

In studying the continuing formation of the Milky Way, we have used the Green Bank Telescope (GBT) of the NRAO to measure the 21 cm HI emission from a specific high velocity cloud known as “Smith’s Cloud”. This cloud is likely within the bounds of the galaxy and appears to be actively plunging into the disk. Our map covers an area about 10x14 degrees, with data taken every 3’ over this range. Most of the emission is concentrated into a single large structure with an unusual cometary morphology, which displays signs of interaction between the cloud and the Galactic halo.

We will present an analysis of the cloud, along with information on possible FIR emission with information gained from the IRAS data, kinematics and likely orbits and paths for the origin and future of the cloud. This research was funded through an NSF REU Grant.

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