SIMBAD references

2011AJ....141..204K - Astron. J., 141, 204 (2011/June-0)

KK 246: a dwarf galaxy with an extended H I disk in the local void.

KRECKEL K., PEEBLES P.J.E., VAN GORKOM J.H., VAN DE WEYGAERT R. and VAN DER HULST J.M.

Abstract (from CDS):

We have found that KK 246, the only confirmed galaxy located within the nearby Tully Void, is a dwarf galaxy with an extremely extended H I disk and signs of an H I cloud with anomalous velocity. It also exhibits clear misalignment between the kinematical major and minor axes, indicative of an oval distortion, and a general misalignment between the H I and optical major axes. We measure an H I mass of (1.05±0.08)x108 M, and an H I extent five times that of the stellar disk, one of the most extended H I disks known. We estimate a dynamical mass of 4.1x109 M, making this also one of the darkest galaxies known, with a mass-to-light ratio of 89. The relative isolation and extreme underdense environment make this an interesting case for examining the role of gas accretion in galaxy evolution.

Abstract Copyright:

Journal keyword(s): galaxies: dwarf - galaxies: evolution - galaxies: formation - galaxies: kinematics and dynamics - large-scale structure of Universe - radio lines: galaxies

Simbad objects: 10

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2021.05.12-05:25:31

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