The GALFA-HI Survey: Extracting New Clouds From a Complex Medium

Details The GALFA-HI Survey: Extracting New Clouds From a Complex Medium The GALFA-HI Survey: Extracting New Clouds From a Complex Medium

Jan 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21724103s&link_type=abstract

American Astronomical Society, AAS Meeting #217, #241.03; Bulletin of the American Astronomical Society, Vol. 43, 2011

Other

Scientific paper

We present a new catalog of compact, isolated neutral hydrogen clouds extracted from the first GALFA-HI data release.
With 4' spatial resolution, 0.18 km/s spectral resolution, and a 80mK noise level per 1 km/s channel, the GALFA-HI survey provides a new view of neutral Galactic hydrogen. To identify isolated clouds, we developed a new algorithm based on a difference of gaussians wavelet. Our algorithm was tuned to specifically search for clouds smaller than 20', velocity widths of less than 20 km/s, and with absolute velocities less than 700 km/s. Thousands of clouds were detected. These may be new dwarf galaxies, high velocity clouds, disk-halo clouds, or some other exotic object. We will highlight the distribution and other properties of this new population and explain our methods in detail. This research was partially funded by NSF grant AST-0917810.

Affiliated with

Also associated with

No associations

Rating

The GALFA-HI Survey: Extracting New Clouds From a Complex Medium does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The GALFA-HI Survey: Extracting New Clouds From a Complex Medium, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The GALFA-HI Survey: Extracting New Clouds From a Complex Medium will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1398609