Laboratory for Millimeter-Wave Astronomy
CARMA Seminar for 2008-05-15

We examine the conditions for detection of CO(1-0) emission in the Large Magellanic Cloud (LMC), using the recently competed second NANTEN CO survey. In particular, we investigate correlations between CO and HI peak brightness temperature, integrated intensity, and line width. We find that significant HI column density is a necessary but not sufficient condition for CO detection, with many regions of bright HI emission not associated with molecular clouds. This conclusion remains unchanged even when isolating the component of HI most closely matched to the CO velocity using a Gaussian decomposition, since in most cases this yields the dominant HI component. HI linewidth appears not to influence the likelihood of CO detection. This suggests that if colliding flows in the atomic medium lead to the formation of giant molecular clouds (GMCs), the turbulent energy must dissipate before CO becomes detectable.

The topics of the CARMA seminar include the solar system, star formation, the interstellar medium, galactic structure and galaxies. All are welcome to attend. Seminars will be limited to 1 hour including questions.

Special accommodations for individuals with disabilities can be made by calling (301) 405-3001. It would be appreciated if we are notified at least one week in advance.

PARKING ON CAMPUS:

Parking for visitors is available in the Cashier-Attended Parking Lot at the intersection of Paint Branch & Technology Drive. It is a 5-10 minute walk from the parking lot to the Computer & Space Sciences building. (The map shows the parking lot in the bottom center and the CSS building in the top right.)

There are a limited number of parking meters in Lot DD by the CSS building; there are no parking meters in the Regents Dr. Parking Garage (B/RR/5). Parking at non-metered spaces in Lot DD and the parking garage is free after 4 pm and on weekends.

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OBSERVATORY PARKING:

Parking information for Observatory events can be found here.

Department of Astronomy, University of Maryland College Park, MD 20742-2421 Phone: (301) 405-3001    FAX: (301) 314-9067 Comments and questions may be directed to webmaster@astro.umd.edu This page was automatically generated on: 12-May-2008.