The Pedigrees of DOGs (Dust-Obscured Galaxies)
Arjun Dey, the NDWFS/MIPS Collaboration
TL;DR
This paper introduces Dust-Obscured Galaxies (DOGs), selected via a mid-infrared-to-optical color criterion, which are likely in a transitional phase from gas-rich mergers to quasars, based on their properties.
Contribution
It proposes a simple color-based selection method for DOGs and suggests their role as transitional systems in galaxy evolution.
Findings
Approximately half of the z=2 ULIRG population are DOGs.
DOGs exhibit properties indicative of a transition phase.
The color criterion effectively identifies dusty, infrared-bright galaxies.
Abstract
A simple mid-infrared-to-optical color criterion of R-[24]>14 Vega mag results in a robust selection of approximately half of the redshift 2 ultraluminous infrared galaxy (ULIRG) population. These `Dust-Obscured Galaxies', or DOGs, have many properties that suggest that they are good candidates for systems in a transition phase between gas-rich mergers and QSOs.
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Taxonomy
TopicsGamma-ray bursts and supernovae · Astronomy and Astrophysical Research · Astronomical Observations and Instrumentation