Computer Science – Databases
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...209.9501k&link_type=abstract
2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #95.01; Bulletin of the American Astronomical Society, V
Computer Science
Databases
Scientific paper
The Arecibo Legacy Fast ALFA (ALFALFA) survey is in its second year of mapping 7000 square degrees of the high galactic latitude sky visible from Arecibo, providing an extragalactic HI line spectral database covering the redshift range between -1600 km/s and 18,000 km/s. Exploiting Arecibo's large collecting area and small beam size, ALFALFA is specifically designed to probe the faint end of the HI mass function in the local universe and will provide a census of HI in the surveyed sky area to faint flux limits, making it especially useful in synergy with wide area surveys conducted at other wavelengths.
This poster presents a summary of detections in the first 132 square degrees (2%) of the survey area. 715 HI detections are cataloged within the solid angle spanning right ascensions of 11h 44m to 14h 00m and declinations of 12 to 16 degrees. Optical counterparts are identified via examination of the digital optical imaging databases. Although this region of the sky has been heavily surveyed by previous targeted observations based on optical fluxor size-limited samples, 70% of the extracted sources are newly reported HI detections. The median redshift is 7000 km/s and the redshift distribution reflects the known local large-scale structure including the Virgo cluster and the void behind it, the A1367-Coma supercluster at cz 7000 km/s and a third more distant overdensity at cz 13000 km/s. A small percentage of HI detections have no identifiable optical counterpart and do not appear connected to or associated with any known galaxy. Several extended HI features are found in the vicinity of the Virgo cluster.
This work has been partially supported by NSF grants AST-0307661, AST-040711, and AST-0607007, by a grant from the Brinson Foundation, and by NAIC.
ALFALFA Consortium
Koopmann Rebecca A.
No associations
LandOfFree
The Arecibo Legacy Fast ALFA Survey: HI Sources in the Northern Virgo Cluster Region 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 Arecibo Legacy Fast ALFA Survey: HI Sources in the Northern Virgo Cluster Region, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Arecibo Legacy Fast ALFA Survey: HI Sources in the Northern Virgo Cluster Region will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1159042