DISCOVERY AND FOLLOW-UP OF A NEARBY GALAXY FROM THE ARECIBO ZONE OF AVOIDANCE SURVEY
- Department of Physics and Astronomy, University of New Mexico, MSC07 4220, 1 University of New Mexico, Albuquerque, NM 87131-0001 (United States)
- Arecibo Observatory, HC03 Box 53995, Arecibo, PR 00612 (United States)
- NRAO, Domenici Science Operations Center, P.O. Box O, 1003 Lopezille Rd, Socorro, NM 87801 (United States)
- Department of Physics and Astronomy, Clemson University, 118 Kinard Laboratory, Clemson, SC 29634 (United States)
The Arecibo L-Band Feed Array Zone of Avoidance (ALFA ZOA) Survey has discovered a nearby galaxy, ALFA ZOA J1952+1428, at a heliocentric velocity of +279 km s{sup -1}. The galaxy was discovered at low Galactic latitude by 21 cm emission from neutral hydrogen (H I). We have obtained follow-up observations with the Expanded Very Large Array and the 0.9 m Southeastern Association for Research in Astronomy optical telescope. The H I distribution overlaps an uncataloged, potential optical counterpart. The H I linear size is 1.4 kpc at our adopted distance of D = 7 Mpc, but the distance estimate is uncertain as Hubble's law is unreliable at low recessional velocities. The optical counterpart has m{sub B} = 16.9 mag and B - R = 0.1 mag. These characteristics, including M{sub H} {sub i} = 10{sup 7.0} M{sub sun} and L{sub B} = 10{sup 7.5} L{sub sun}, if at 7 Mpc, indicate that this galaxy is a blue compact dwarf, but this remains uncertain until further follow-up observations are complete. Optical follow-up observations are ongoing and near-infrared follow-up observations have been scheduled.
- OSTI ID:
- 21565460
- Journal Information:
- Astrophysical Journal Letters, Vol. 739, Issue 1; Other Information: DOI: 10.1088/2041-8205/739/1/L26; ISSN 2041-8205
- Country of Publication:
- United States
- Language:
- English
Similar Records
THE ARECIBO L-BAND FEED ARRAY ZONE OF AVOIDANCE SURVEY. I. PRECURSOR OBSERVATIONS THROUGH THE INNER AND OUTER GALAXY
The alfalfa “almost darks” campaign: Pilot VLA HI observations of five high mass-to-light ratio systems