- Cassiopeia Dwarf
Infobox Galaxy
name = Cassiopeia Dwarf
epoch =J2000
type = Sph?cite web
title=NASA/IPAC Extragalactic Database
work=Results for Cassiopeia Dwarf
url=http://nedwww.ipac.caltech.edu/
accessdate=2006-11-30 ]
ra = RA|23|26|31.0
dec = DEC|+50|41|31
dist_ly = 2.58 ± 0.13 Mly (790 ± 40 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 = -307 ± 2 km/s
appmag_v = 12.9
size_v = 2′.5 × 2′.0
constellation name = Cassiopeia
notes =satellite galaxy of M31
names = Andromeda VII, And VII,cite web
title=SIMBAD Astronomical Database
work=Results for Andromeda V
url=http://simbad.u-strasbg.fr/Simbad
accessdate=2006-11-30] Cas dSph,, PGC 2807155
Cassiopeia Dwarf GalaxyThe Cassiopeia Dwarf (also known as Andromeda VII) is a
dwarf spheroidal galaxy about 2.58 Mly away in theconstellation Cassiopeia. The Cassiopeia Dwarf is part of theLocal group of galaxies and asatellite galaxy of theAndromeda Galaxy (M31).The Cassiopeia Dwarf was found in
1998 , together with the Pegasus Dwarf, by a team ofastronomers (Karachentsev and Kashibadze)citation
url = http://adsabs.harvard.edu/abs/2005AJ....129.2232P
title = The Dwarf Spheroidal Companions to M31: Variable Stars in Andromeda I and Andromeda III
authors = Pritzl, Barton J.; Armandroff, Taft E.; Jacoby, George H.; Da Costa, G. S.
year = 2005
date = May 2005
journal = The Astronomical Journal
volume = 129
issue = 5
pages = 2232–2256
doi = 10.1086/428372] inRussia and theUkraine . The Cassiopeia Dwarf and the Pegasus Dwarf are farther from M31 than its other known companion galaxies, yet still appear bound to it by gravity. Neither galaxy contains any young, massivestars or shows traces of recent star formation. Instead, both seem dominated by very old stars, with ages up to 10 billion years.ee also
*
Andromeda's satellite galaxies External links
* [http://www.seds.org/~spider/spider/LG/and7.html SEDS: Dwarf Spheroidal Galaxy Andromeda VII]
* [http://simbad.u-strasbg.fr/sim-id.pl?protocol=html&Ident=Andromeda+VII&NbIdent=1&Radius=10&Radius.unit=arcmin&CooFrame=FK5&CooEpoch=2000&CooEqui=2000&output.max=all&o.catall=on&output.mesdisp=N&Bibyear1=1983&Bibyear2=2006&Frame1=FK5&Frame2=FK4&Frame3=G&Equi1=2000.0&Equi2=1950.0&Equi3=2000.0&Epoch1=2000.0&Epoch2=1950.0&Epoch3=2000.0 SIMBAD: And VII -- Galaxy in Group of Galaxies]
*References
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