Google Apps (and other Google Tools) for Libraries

Using a mix of demonstration, hands-on experience and conversation, participants will dig deeper into Google and Google Apps. You may want to bring your lab coat. Macalester has been using Google Apps for nearly a year, and will share some experiences as well as ways we have been integrating / leveraging Google into the day-to-day life of our library and institution. We want to know how others are using Google, and hope to develop a shared best practices project as one outcome of this session

Shock-Excited Maser Emission from Supernova Remnants: G32.8-0.1, G337.8-0.1, G346.6-0.2, and the HB3/W3 Complex

We present the results of VLA observations in the ground-state hydroxyl (OH) transition at 1720 MHz toward 20 supernova remnants (SNRs). We detect compact emission from four objects. For three of these objects (G32.8-0.1, G337.8-0.1, and G346.6-0.2), we argue that the emission results from masers which are shock-excited due to the interaction of the SNR and an adjacent molecular cloud. We observe a characteristic Zeeman profile in the Stokes V spectrum, which allows us to derive a magnetic field of 1.5 and 1.7 mG for G32.8-0.1 and G346.6-0.2, respectively. The velocity of the masers also allows us to determine a kinematic distance to the SNR. Our criteria for a maser to be associated with an SNR along the line of sight are that the position and velocity of the maser and SNR must agree, and the OH(1720) emission must be unaccompanied by other OH lines.Comment: Accepted to the Astronomical Journal (19 pages total, 6 figures, 4 tables