Hostname: page-component-857557d7f7-nbs69 Total loading time: 0 Render date: 2025-11-21T15:31:19.859Z Has data issue: false hasContentIssue false
  • English
  • Français

The Star Formation History of Isolated Dwarf UGC 4879

Published online by Cambridge University Press:  11 July 2011

M. Koleva ,
Ph. Prugniel ,
I. Vauglin ,
B.A. Jacobs ,
R. Brent Tully ,
L. Rizzi ,
I.D. Karachentsev ,
K. Chiboucas  and
E.V. Held
Get access

Abstract

Recent observations of UGC 4879 with the Advanced Camera for Surveys on the Hubble Space Telescope confirm that it is a nearby isolated dwarf irregular galaxy. We measure a distance of 1.36 ± 0.03 Mpc using the Tip of the Red Giant Branch method. This distance puts UGC 4879 beyond the radius of first turnaround of the Local Group and ~700 kpc from its nearest neighbor Leo A. This isolation makes this galaxy an ideal laboratory for studying pristine star formation uncomplicated by interactions with other galaxies. We present the star formation history of UGC 4879 derived from simulated color-magnitude diagrams.

Information

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 48: CRAL-2010 A Universe of Dwarf Galaxies , 2011 , pp. 67 - 68
Copyright
© EAS, EDP Sciences, 2011

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable

References

Bertelli, G., Bressan, A., Chiosi, C., Fagotto, F., & Nasi, E., 1994, AAPS, 106, 275
Girardi, L., Bressan, A., Bertelli, G., & Chiosi, C., 2000, AAPS, 141, 371
Jacobs, B.A., et al., 2009, AJ, 138, 332CrossRef
Jacobs, B.A., et al., 2010, AJ, submitted [arXiv:1010.1325]
Oosterloo, T., 2010, private communication