Skip to main content Accessibility help
×
Home

Subaru Hyper Suprime-Cam Survey for the Local Group Dwarf Galaxies: Ursa Minor

  • Yutaka Komiyama (a1)

Abstract

We have carried out a wide and deep imaging survey for the Local Group dwarf spheroidal galaxy Ursa Minor (UMi) using Hyper Suprime-Cam (HSC). The data cover out beyond the nominal tidal radius down to ~25 mag in i band, which is ~2 mag below the main sequence turn-off point. The structural parameters of UMi are derived using red giant branch (RGB) stars and sub-giant branch (SGB) stars, and the tidal radius is suggested to be larger than those estimated by the previous studies. It is also found that the distribution of bluer RGB/SGB stars is more extended than that of redder RGB/SGB stars. The fraction of binary systems is estimated to be ~0.4 from the morphology of the main sequences.

Copyright

References

Hide All
Irwin, M. J., & Hatzidimitriou, D. 1995, MNRAS, 277, 1354
Kleyna, J. T., Geller, M. J., & Kenyon, S. J. et al. 1995, AJ, 115, 2359
Milone, A. P., Piotto, G., King, & I. R. et al. 2010, ApJ, 709, 1183
Minor, Q. E. 2013, ApJ, 779, 116
Palma, C., Majewski, S. R., & Siegel, M. H. et al. 2003, AJ, 125, 1352
Solima, A, Beccari, G., & Ferraro, F. R. et al. 2007, MNRAS, 380, 781
MathJax
MathJax is a JavaScript display engine for mathematics. For more information see http://www.mathjax.org.

Keywords

Subaru Hyper Suprime-Cam Survey for the Local Group Dwarf Galaxies: Ursa Minor

  • Yutaka Komiyama (a1)

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed