Open AccessCam A: a new dwarf low‐surface‐brightness galaxy on the Local Group outskirts?
Author(s) -
Karachentsev I. D.,
Makarova L. N.,
Andersen M. I.
Publication year - 1999
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1046/j.1365-8711.1999.02873.x
Subject(s) - physics , local group , astrophysics , irregular galaxy , dwarf galaxy , surface brightness , galaxy , stellar population , telescope , red giant branch , galaxy group , surface brightness fluctuation , astronomy , population , star formation , elliptical galaxy , interacting galaxy , medicine , metallicity , environmental health
We present a deep I ‐band image of the nearby dwarf irregular galaxy Cam A obtained with the Nordic Optical Telescope with 0.6‐arcsec seeing (FWHM). The distance to Cam A, D MW =1.9 Mpc, is estimated from the tip of the red giant branch seen at I =22.8±0.2 mag. The youngest stellar population of the galaxy seems to be of age about 100 Myr. Relying on its barycentric distance, D LG =1.6 Mpc, Cam A may be considered as a new probable peripheral member of the Local Group, or a member of the small group situated between the IC 342/Maffei group and the Local Group.