SIMBAD references

2013AJ....146..126C - Astron. J., 146, 126 (2013/November-0)

Confirmation of faint dwarf galaxies in the M81 group.


Abstract (from CDS):

We have followed up on the results of a 65 deg2 CFHT/MegaCam imaging survey of the nearby M81 Group searching for faint and ultra-faint dwarf galaxies. The original survey turned up 22 faint candidate dwarf members. Based on two-color HST ACS/WFC and WFPC2 photometry, we now confirm 14 of these as dwarf galaxy members of the group. Distances and stellar population characteristics are discussed for each. To a completeness limit of Mr' = -10, we find a galaxy luminosity function slope of -1.27±0.04 for the M81 Group. In this region, there are now 36 M81 Group members known, including 4 blue compact dwarfs; 8 other late types including the interacting giants M81, NGC 3077, and M82; 19 early type dwarfs; and at least 5 potential tidal dwarf galaxies. We find that the dSph galaxies in M81 appear to lie in a flattened distribution, similar to that found for the Milky Way and M31. One of the newly discovered dSph galaxies has properties similar to the ultra-faint dwarfs being found in the Local Group with a size Re∼ 100 pc and total magnitude estimates Mr' = -6.8 and MI∼ -9.1.

Abstract Copyright:

Journal keyword(s): galaxies: dwarf - galaxies: fundamental parameters - galaxies: groups: individual: M81 - galaxies: luminosity function, mass function - galaxies: photometry

CDS comments: KUG 0945+670 is a misprint for KUG 0954+670. p.8: d0939+70 is a probable misprint for d0939+71. Table 4: d1014+69 is a misprint for d1014+68. Table 1: PGC designations not recognized by Simbad nor HyperLeda.

Simbad objects: 59

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