Cetus Dwarf
Encyclopedia
Cetus Dwarf is a dwarf spheroidal galaxy
. It lies approximately 2.46 Million light-years from Earth. It is an isolated galaxy of the Local Group
, which also contains the Milky Way
. All of the most readily observable stars in the galaxy are red giant
s.http://www.seds.org/~spider/spider/LG/cet_dw.html
, George Hau and Mike Irwin
and was found to be a member of the Local Group
.
Dwarf spheroidal galaxy
Dwarf spheroidal galaxy is a term in astronomy applied to low luminosity galaxies that are companions to the Milky Way and to the similar systems that are companions to the Andromeda Galaxy M31...
. It lies approximately 2.46 Million light-years from Earth. It is an isolated galaxy of the Local Group
Local Group
The Local Group is the group of galaxies that includes Earth's galaxy, the Milky Way. The group comprises more than 30 galaxies , with its gravitational center located somewhere between the Milky Way and the Andromeda Galaxy...
, which also contains the Milky Way
Milky Way
The Milky Way is the galaxy that contains the Solar System. This name derives from its appearance as a dim un-resolved "milky" glowing band arching across the night sky...
. All of the most readily observable stars in the galaxy are red giant
Red giant
A red giant is a luminous giant star of low or intermediate mass in a late phase of stellar evolution. The outer atmosphere is inflated and tenuous, making the radius immense and the surface temperature low, somewhere from 5,000 K and lower...
s.http://www.seds.org/~spider/spider/LG/cet_dw.html
History
The Cetus Dwarf was discovered in 1999 by Alan WhitingAlan Whiting
Alan Whiting is a British screenwriter who has written for Heartbeat, Wire in the Blood, Steel River Blues and Kingdom . "The Darkness of Light", one of his Wire in the Blood episodes, was nominated for an Edgar Award for Best Television Feature Or Mini-Series Teleplay in 2005...
, George Hau and Mike Irwin
Mike Irwin
Michael Irwin is director of the Cambridge Astronomical Survey Unit and one of the discoverers of the Cetus Dwarf galaxy and the Sagittarius Dwarf Elliptical Galaxy.-References:...
and was found to be a member of the Local Group
Local Group
The Local Group is the group of galaxies that includes Earth's galaxy, the Milky Way. The group comprises more than 30 galaxies , with its gravitational center located somewhere between the Milky Way and the Andromeda Galaxy...
.