NGC 604; OBSERVING NEBULAE IN OTHER GALAXIES.
Photo Credit: NASA/ESA Hubble Space Telescope. CLICK photo for larger view and see below for links and information.
A couple weeks ago I detailed M33, the Triangulum Galaxy (see links below) so I didn’t want to get too far away before I detailed one of the few nebulae that we can observe in a galaxy other than our own. NGC 604 is approximately 2.7 million light years away in M33, the Triangulum Galaxy which is located in the constellation Triangulum.
NGC 604 is a vast star forming region that stretches approximately 1300 light years in diameter and contains more than 200 bright blue stars that were formed only about 3 million years ago (as we see them). That size dwarfs the Orion Nebula in size and star formation by almost 100 times. That massive rate of star formation coupled with supernovae explosions carved out this vast cavern in the surrounding gas and dust that gave life to them. Most of the massive stars at the core of this nebula are 120 times the mass of our Sun and the outpouring of ultraviolet radiation from these stars renders the entire structure aglow. Eventually the nebula will disperse and the stars will be free to view the universe.
A member of the local group of galaxies; M33 is the third largest galaxy in that group after Andromeda and the Milky Way which consequently on a three-way collision course with one another.
NAME: NGC 604.
WHAT IS IT?: Star forming region, emission nebula.
HOW BIG IS IT?: Approximately 1300 light years in diameter at its widest or almost 2’ arcminutes wide.
HOW FAR AWAY IS IT?: Approximately 2.7 million light years or 830,000 parsecs distant.
WHERE IS IT? (General): M33 Triangulum Galaxy in the constellation Triangulum.
WHERE IS IT? (Exact RA/DEC J2000): R.A. 01h 34m 33s.80 / Dec. +30° 46′ 59″.
NASA Hubblesite News Center release for this image: http://hubblesite.org/newscenter/archive/releases/2003/30/image/a/
My post on the Triangulum Galaxy: https://danspace77.com/2014/01/26/meet-one-of-your-closest-neighbors-m33-triangulum-galaxy/
ESA Space Telescope page for this object: http://www.spacetelescope.org/images/opo9627c/
ESA Science page for this object: http://sci.esa.int/hubble/16141-ngc-604-in-galaxy-m33/
Chandra X-ray observatory page for this object: http://chandra.harvard.edu/photo/2009/n604/more.html
Messier SEDS page for this object: http://messier.seds.org/more/m033_n604.html