SIMBAD references

2001A&A...375..359K - Astronomy and Astrophysics, volume 375, 359-365 (2001/8-4)

WFPC2 observations of two dwarf spheroidal galaxies in the M 81 group.

KARACHENTSEV I.D., SHARINA M.E., DOLPHIN A.E., GEISLER D., GREBEL E.K., GUHATHAKURTA P., HODGE P.W., KARACHENTSEVA V.E., SARAJEDINI A. and SEITZER P.

Abstract (from CDS):

We have obtained HST WFPC2 and ground-based images of two low surface brightness dwarf spheroidal galaxies in the M 81 group, FM1 and KKH57. Their colour-magnitude diagrams show red giant branches with tips at I=23.77±0.14 and I=23.97±0.17, respectively. The derived true distance moduli, 27.66±0.16 and 27.96±0.19, agree well with the mean distance modulus of the M 81 group, 27.84±0.05. Absolute V magnitudes of the galaxies (-11.46 and -10.85), their colours ((B-V)=0.88 and 0.80), and central surface brightnesses (Σ0,V=24.8 and 24.4mag/arcsec2) are in the range of other dSph companions of M 81, M 31, and Milky Way. With two new objects the maximum projected radius of the dwarf spheroidal subsystem around M 81 is 380kpc.

Abstract Copyright:

Journal keyword(s): galaxies: dwarf - galaxies: stellar content - galaxies: distances - galaxies: M 81 group: FM1 and KKH57

CDS comments: In ref list 2000A&AS.145.229F instead of 2000A&A.145.229F.

Simbad objects: 17

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2019.10.24-02:31:25

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