Pegasus IV: Discovery and Spectroscopic Confirmation of an Ultra-faint Dwarf Galaxy in the Constellation Pegasus

We report the discovery of Pegasus IV, an ultra-faint dwarf galaxy found in archival data from the Dark Energy Camera processed by the DECam Local Volume Exploration Survey. Pegasus IV is a compact, ultra-faint stellar system ( ${r}_{1/2}={41}_{-6}^{+8}$ pc; M _V = −4.25 ± 0.2 mag) located at a heli...

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Bibliographic Details

Published in:	The Astrophysical Journal
Main Authors:	W. Cerny, J. D. Simon, T. S. Li, A. Drlica-Wagner, A. B. Pace, C. E. Martínez-Vázquez, A. H. Riley, B. Mutlu-Pakdil, S. Mau, P. S. Ferguson, D. Erkal, R. R. Munoz, C. R. Bom, J. L. Carlin, D. Carollo, Y. Choi, A. P. Ji, V. Manwadkar, D. Martínez-Delgado, A. E. Miller, N. E. D. Noël, J. D. Sakowska, D. J. Sand, G. S. Stringfellow, E. J. Tollerud, A. K. Vivas, J. A. Carballo-Bello, D. Hernandez-Lang, D. J. James, D. L. Nidever, J. L. Nilo Castellon, K. A. G. Olsen, A. Zenteno, DELVE Collaboration
Format:	Article
Language:	English
Published:	IOP Publishing 2023-01-01
Subjects:	Galactic archaeology RR Lyrae variable stars Dark matter Dwarf galaxies Spectroscopy Sky surveys
Online Access:	https://doi.org/10.3847/1538-4357/aca1c3