The Arecibo L-band Feed Array Zone of Avoidance (ALFAZOA) Shallow Survey

Abstract

The Arecibo L-band Feed Array Zone of Avoidance (ALFAZOA) Shallow Survey is a blind HI survey of the extragalactic sky behind the northern Milky Way conducted with the ALFA receiver on the 305m Arecibo Radio Telescope. ALFAZOA Shallow covered 900 square degrees at full sensitivity from 30° $\le l\le$75° and |b|$\le$ 10° and an additional 460 square degrees at limited sensitivity at latitudes up to 20°. It has an rms sensitivity of 5-7 mJy and a velocity resolution of 9 - 20.6 km s${}^{-1}$, and detected 403 galaxies out to a recessional velocity of 12,000 km s${}^{-1}$, with an angular resolution of 3.4' and a positional accuracy between 0.2' and 1.7'. The survey is complete above an integrated line flux $F_{HI}$ = 2.0 Jy km s${}^{-1}$ for half the survey, and above $F_{HI}$ = 2.8 Jy km s${}^{-1}$ for the other half. Forty-three percent of the ALFAZOA HI detections have at least one possible optical/NIR counterpart in the literature, and an additional 16% have counterparts that only included previous HI measurements. There are fewer counterparts in regions of high extinction and for galaxies with lower HI mass. Comparing the results of the survey to the predictions of Erdogdu et al. (2006), and using their nomenclature, ALFAZOA confirms the position and extent in the ZOA of the C7, C$\zeta$, Pegasus, Corona Borealis and Delphinus structures, but not of the Cygnus void. Two new structures are identified, both connected to the C7 overdensity; one extends to 35°, and the other crosses the ZOA.

arXiv comment19 pages, 18 figures, accepted for publication in the Astronomical Journal

References in corpus (25)

• Measuring Reddening with SDSS Stellar Spectra and Recalibrating SFD
• HyperLEDA. III. The catalogue of extragalactic distances
• The Arecibo Legacy Fast ALFA Survey: I. Science Goals, Survey Design and Strategy
• The 2MASS Redshift Survey - Description and Data Release
• The Arecibo Legacy Fast ALFA Survey: The alpha.40 HI Source Catalog, its Characteristics and their Impact on the Derivation of the HI Mass Function
• The 1000 Brightest HIPASS Galaxies: HI Properties
• HIPASS High-Velocity Clouds: Properties of the Compact and Extended Populations
• Reconstructed Density and Velocity Fields from the 2MASS Redshift Survey
• The Solar Motion Relative to the Local Group
• The Arecibo Legacy Fast ALFA Survey: IV. Strategies for Signal Identification and Survey Catalog Reliability
• The Effelsberg-Bonn HI Survey (EBHIS)
• 2MTF I. The Tully-Fisher Relation in the 2MASS J, H and K Bands
• The Parkes HI Zone of Avoidance Survey
• HI Bright Galaxies in the Southern Zone of Avoidance
• Discovery of a supercluster in the ZOA in Vela
• The Arecibo Galaxy Environment Survey: II. A HI view of the Abell cluster 1367 and its outskirts
• The HI Parkes Zone of Avoidance Survey: the Northern Extension
• The WSRT ZoA Perseus-Pisces Filament wide-field HI imaging survey I. HI catalogue and atlas
• Dynamical Constraints on the Local Group from the CMB and 2MRS Dipoles
• The Arecibo L-band Feed Array Zone of Avoidance Survey I: Precursor Observations through the Inner and Outer Galaxy
• The Nancay HI Zone of Avoidance survey of 2MASS bright galaxies
• Spectroscopic Analysis in the Virtual Observatory Environment with SPLAT-VO
• NIR Tully-Fisher in the Zone of Avoidance. -- III. Deep NIR catalogue of the HIZOA galaxies
• EZOA -- A catalogue of EBHIS HI detected galaxies in the northern Zone of Avoidance
• HI line observations of 2MASS galaxies in the Zone of Avoidance

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