- Fornax Dwarf
Infobox Galaxy
caption =
name = "Fornax Dwarf Spheroidal"
epoch =J2000
type = dE0cite web
title=NASA/IPAC Extragalactic Database
work=Results for Fornax Dwarf Spheroidal
url=http://nedwww.ipac.caltech.edu/
accessdate=2006-11-29 ]
ra = RA|02|39|59.3
dec = DEC|-34|26|57
dist_ly = 460 ± 30 kly (140 ± 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 = 53 ± 9 km/s
appmag_v = 9.3
size_v = 17′.0 × 12′.6
constellation name =Fornax
notes = has 6 globular clusters
names = Fornax dSph,cite web
title=SIMBAD Astronomical Database
work=Results for Fornax Dwarf Spheroidal
url=http://simbad.u-strasbg.fr/Simbad
accessdate=2006-11-29] Fornax Dwarf Elliptical, Fornax Dwarf Galaxy, Fornax dE, PGC 10074 / 10093The Fornax Dwarf Spheroidal is an elliptical
dwarf galaxy in theconstellation Fornax that was discovered in 1938 byHarlow Shapley . He discovered it while he was inSouth Africa on photographic plates taken by a 24 inchreflecting telescope atBoyden Observatory , shortly after he discovered theSculptor Dwarf galaxy.The
galaxy is a satellite of theMilky Way and contains sixglobular clusters ; the largest,NGC 1049 , was discovered before the galaxy itself. The galaxy is also receding from theMilky Way at 53 km/s. It mostly containspopulation II stars.Globular clusters
Using the
Hubble Space Telescope , in 1999, Buonanno et al. derived acolor-magnitude diagram for Fornax 4, a globular cluster within this galaxy. Unlike theglobular cluster s Fornax 1, 2, 3, and 5, which havehorizontal branch es across a wide range of colors and includeRR Lyrae variable s, Fornax 4 is found to have only red in its horizontal branch. Fornax 4 is also ~3 Gyr younger than the other globular clusters. Buonanno et al. note that the color-magnitude diagram of Fornax 4 has a strong similarity to "young" galactic globularRuprecht 106 . This leads to two open questions: Why do dwarf spheroidals allow the formation of globular clusters like Fornax 4 andTerzan 7 (of Sagittarius dwarf) long after globular clusters ceased to form in the main body of the Galactic halo? Is it possible that "young" globular clusters of the outer halo like Ruprecht 106 were originally formed in now defunct dwarf spheroidals? 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]External links
* [http://www.astro.uu.se/~ns/fornax.html Fornax dSph]
* [http://www.seds.org/~spider/spider/LG/for_dw.html Fornax Dwarf]
*WikiSky|name=The Fornax DwarfReferences
Wikimedia Foundation. 2010.