The Arecibo L-band Feed Array Zone of Avoidance (ALFAZOA) Shallow Survey
Monica Sanchez-Barrantes, Patricia A. Henning, Travis McIntyre,, Emmanuel Momjian, Robert Minchin, Jessica L. Rosenberg, Stephen Schneider,, Lister Staveley-Smith, Wim van Driel, Mpati Ramatsoku, Zhon Butcher, Ensieh, Vaez

TL;DR
The ALFAZOA Shallow Survey used the Arecibo telescope to detect 403 galaxies behind the Milky Way, revealing large-scale structures and providing valuable data on galaxy distribution in the Zone of Avoidance.
Contribution
This survey is the first to systematically map the extragalactic sky behind the Milky Way using blind HI observations with ALFA, identifying new structures and confirming known ones.
Findings
Detected 403 galaxies with velocities up to 12,000 km/s.
Confirmed the extent of several large-scale structures in the Zone of Avoidance.
Identified two new galaxy structures connected to the C7 overdensity.
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{\deg} 75{\deg} and |b| 10{\deg} and an additional 460 square degrees at limited sensitivity at latitudes up to 20{\deg}. It has an rms sensitivity of 5-7 mJy and a velocity resolution of 9 - 20.6 km s, and detected 403 galaxies out to a recessional velocity of 12,000 km s, 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 = 2.0 Jy km s for half the survey, and above = 2.8 Jy km s for the other half. Forty-three percent of the ALFAZOA HI…
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