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The Recent Star Formation Histories of M81 Group Dwarf Irregular Galaxies

  • Authors: Daniel R. Weisz, Evan D. Skillman, John M. Cannon, Andrew E. Dolphin, Robert C. Kennicutt, Jr., Janice Lee, and Fabian Walter

Weisz et al. 2008 The Astrophysical Journal 689 160.

  • Provider: AAS Journals

Caption: Fig. 8.

Four‐panel figure of the Ho IX showing the ACS footprint in blue with the chip gap direction in red over (a) the R‐band DSS image, (b) the color ACS image, and stellar density maps of (c) blue and (d) red stars as determined by their positions on the CMD. The blue stars have a color <0.6 and magnitude >60% completeness in F814W. The red stars are defined as ﹩0.6\leq \mathrm{color}\,\leq 3.0﹩ and a magnitude range between the TRGB and 60% completeness in F814W. The highest density regions are the red contours and the lowest are in purple. Note that our ACS field of Ho IX contains red stars from M81 (see § 4.1 for further discussion).

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