2014/10/11 by Khaled Said, K. Said, Said, K. +5 · 3 citations
Physics and Astronomy · #Astronomy #Astronomy and Astrophysical Research #Astrophysics #Astrophysics of Galaxies (astro-ph.GA) #Cosmic microwave background #Cosmology and Nongalactic Astrophysics (astro-ph.CO) #Extinction (optical mineralogy) #FOS: Physical sciences #Galaxies: Formation, Evolution, Phenomena #Galaxy #Milky Way #Peculiar velocity #Physics #Redshift #Scientific Research and Discoveries #Sky #astro-ph.CO #astro-ph.GA
paper · pdf · doi:10.48550/arxiv.1410.2992
published in arXiv (Cornell University) (Cornell University) · 6 pages, 3 figures, to appear in Proceedings of SAIP2013, the 58th Annual Conference of the South African Institute of Physics, edited by Roelf Botha and Thulani Jili (SAIP and University of Zululand, 2014). ISBN: 978-0-620-62819-8
arxiv created 2014/10/11 · openalex publication_date 2014/10/11 · arxiv updated 2014/10/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
Dust extinction and stellar confusion of the Milky Way hinder the detection of galaxies at low Galactic latitude, creating the so-called Zone of Avoidance (ZoA). This has hampered our understanding of the local dynamics, cosmic flow fields and the origin of the Cosmic Microwave Background dipole. The ZoA (|b| ≤ 5^∘) is also excluded from the "whole-sky" Two Micron All-Sky Survey (2MASS) Redshift Survey (2MRS) and 2MASS Tully-Fisher Survey (2MTF). The latter aims to provide distances and peculiar velocities for all bright inclined 2MASS galaxies with Kso ≤ 11\hbox. \rm m25. Correspondingly, knowledge about the density distribution in the ZoA remains limited to statistical interpolations. To improve on this bias we pursued two different surveys to fill in the southern and northern ZoA. These data will allow a direct measurement of galaxy peculiar velocities. In this paper we will present a newly derived optimized Tully-Fisher (TF) relation that allow accurate measures of galaxy distances and peculiar velocities for dust-obscured galaxies. We discuss further corrections for magnitudes and biases and present some preliminary results on flow fields in the southern ZoA.