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A colour‐agnitude diagram of the Pisces dwarf galaxy
Author(s) -
Tikhono N.,
Makarova L.
Publication year - 1996
Publication title -
astronomische nachrichten
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 63
eISSN - 1521-3994
pISSN - 0004-6337
DOI - 10.1002/asna.2113170305
Subject(s) - physics , astrophysics , red giant branch , diagram , galaxy , distance modulus , dwarf galaxy , stars , red giant , irregular galaxy , dwarf spheroidal galaxy , giant star , astronomy , interacting galaxy , globular cluster , mathematics , statistics
Abstract We present B, V and R band CCD images of the dwarf galaxy LGS‐3 (Pisces dwarf). About 180 stars and diffuse objects were found and processed in these frames. The colour‐magnitude diagram shows a prominent red giant branch and a few blue stars only. Details of the morphological properties and colour‐agnitude diagram indicate to an intermediate (between dIrr and dSph) type of LGS‐3. We estimate the galaxy distance modulus to be about ( m ‐ M ) 0 = 23.9 ± 0.3 mag on the basis of the tip of the red giant branch. We measured the galaxy colour to be about B–V = 0.8 mag and the linear diameter 700 pc, which is the smallest one in the Local group.