Deep NIR Photometry of HI Galaxies Behind the Milky Way
Wendy L. Williams (1), Patrick A. Woudt (1), Renee C. Kraan-Korteweg, (1) ((1) Astronomy Department, ACGC, University of Cape Town, South Africa)
TL;DR
This study conducts near-infrared photometry of HI-detected galaxies behind the Milky Way to improve understanding of the mass distribution and dynamics in the Zone of Avoidance, which is crucial for local universe velocity flow models.
Contribution
It provides new NIR photometry data for HI galaxies in the Zone of Avoidance, enabling more accurate peculiar velocity measurements using the Tully-Fisher relation.
Findings
New NIR photometry data for galaxies in the ZoA
Enhanced understanding of mass distribution behind the Milky Way
Potential to refine local velocity flow models
Abstract
Current studies of the peculiar velocity flow field in the Local Universe are limited by the lack of detection of galaxies behind the Milky Way. The contribution of the largely unknown mass distribution in this "Zone of Avoidance" (ZoA) to the dynamics of the Local group remains contraversial. We have undertaken a near infrared (NIR) survey of HI detected galaxies in the ZoA. The photomety derived here will be used in the NIR Tully-Fisher (TF) relation to derive the peculiar velocities of this sample of galaxies in the ZoA.
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Taxonomy
TopicsGalaxies: Formation, Evolution, Phenomena · Astronomy and Astrophysical Research · Stellar, planetary, and galactic studies