Ursa Minor Dwarf

Ursa Minor Dwarf

Infobox Galaxy


caption = Ursa Minor Dwarf on DSS2, 0.6° view
name = Ursa Minor Dwarf
epoch = J2000
type = Ecite web
title=NASA/IPAC Extragalactic Database
work=Results for Ursa Minor Dwarf
url=http://nedwww.ipac.caltech.edu/
accessdate=2006-11-29 ]
ra = RA|15|09|08.5
dec = DEC|+67|13|21
dist_ly = 200 ± 30 kly (60 ± 10 kpc)cite journal
author=I. D. Karachentsev, V. E. Karachentseva, W. K. Hutchmeier, D. I. Makarov
title=A Catalog of Neighboring Galaxies
journal=Astronomical Journal
year=2004
volume=127
pages=2031–2068
url=http://adsabs.harvard.edu/abs/2004AJ....127.2031K
doi=10.1086/382905] cite journal
author=Karachentsev, I. D.; Kashibadze, O. G.
title=Masses of the local group and of the M81 group estimated from distortions in the local velocity field
journal=Astrophysics
year=2006
volume=49
issue=1
pages=3–18
url=http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=2006Ap.....49....3K
doi=10.1007/s10511-006-0002-6 ]
z = -247 ± 1 km/s
appmag_v = 11.9
size_v = 30′.2 × 19′.1
constellation name = Ursa Minor constellation
notes = satellite galaxy of Milky Way
names = UGC 9749, PGC 54074, DDO 199, UMi Dwarf

The Ursa Minor Dwarf dwarf elliptical galaxy was discovered by A.G. Wilson of the Lowell Observatory in 1954. It is part of the Ursa Minor constellation, and a satellite galaxy to the Milky Way. The galaxy consists mainly of older stars and there appears to be little to no ongoing star formation in the Ursa Minor Dwarf galaxy.

Evolutionary history

In 1999, Mighell & Burke used the Hubble Space Telescope to confirm that the UMi system had a straight forward evolutionary history with a single ~2 Gyr long burst of star formation around 14 Gyr ago. citation
last1 = van den Bergh
first1 = Sidney
authorlink1 = Sidney van den Bergh
title = Updated Information on the Local Group
year = 2000
date = April 2000
journal = The Publications of the Astronomical Society of the Pacific
volume = 112
issue = 770
url = http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=2000PASP..112..529V
pages = 529–536
doi = 10.1086/316548]

ee also

* Ursa Major Dwarf

References

External links

*WikiSky|name=The Ursa Minor Dwarf


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