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9/25/2014 Baby Boom - Wikipedia, the free encyclopedia Coordinates: 10h 00m 54.52s, +02° 34′ 35.17″ From Wikipedia, the free encyclopedia

The Baby Boom Galaxy is a located 12.2 billion light years away.[1][4] Discovered by NASA's Spitzer Science Center at the California Institute of Technology, the Baby Boom Galaxy galaxy is notable for being the new record holder for the brightest starburst galaxy in the very distant , with brightness being a measure of its extreme -formation rate.[5] The Baby Boom Galaxy has been nicknamed "the extreme stellar machine" because it is seen producing at a surprising rate of up to 4,000 per year. The galaxy in which Earth resides turns out an average of just 10 stars per year.[4]

Contents

1 Discovery 2 Strange behavior 3 See also 4 References

Baby Boom Galaxy (Green-Red Splotch) Discovery Observation data The Baby Boom Galaxy was discovered and characterized in 2008 using a suite of operating at different wavelengths. NASA's Hubble Space and Japan's Subaru Right ascension 10h 00m 54.52s [1] Telescope, atop Mauna Kea in Hawaii, first spotted the galaxy in visible-light images, where it Declination +2° 34′ 35.17″ appeared as an inconspicuous smudge due to its great distance.[6] It wasn't until the Spitzer and the James Clerk Maxwell Telescope, also on Mauna Kea in Hawaii, observed the galaxy at 280,919 km/s and submillimeter wavelengths, respectively, that the galaxy was formally discovered.[4] Distance 12.2 Billion Light Years Type Starburst galaxy,[1] SMG[2] Strange behavior Other designations http://en.wikipedia.org/wiki/Baby_Boom_Galaxy 1/3 9/25/2014 Baby Boom Galaxy - Wikipedia, the free encyclopedia The Baby Boom Galaxy is so named because it generates over 4,000 stars per year (compared to EQ J100054+023435,[3] Baby Boom Galaxy an average of just 10 per year for the Milky Way).[1][4][5] At that rate, the galaxy needs only 50 See also: Galaxy, List of million years to grow into an equivalent of the most massive galaxy ever observed.[7] The discovery also challenges the accepted model for galaxy formation, which has most galaxies slowly bulking up by absorbing pieces of other galaxies, rather than growing internally.[8] Another unusual aspect is the fact that scientists are observing this galaxy at a time when the universe was only a little over 1.4 billion years old, meaning that this galaxy was exhibiting this strange behaviour while the universe was still in its infancy.[5]

"This galaxy is undergoing a major baby boom, producing most of its stars all at once," said of NASA's Spitzer Science Center. "If our human population was produced in a similar boom, then almost all of the people alive today would be the same age."[4]

To that, the principal investigator of the Cosmic Evolution Surveyor, Nick Scoville of Caltech responded: "We may be witnessing, for the first time, the formation of one of the most massive elliptical galaxies in the universe."[7] See also

Messier 82 Starburst galaxy

References

1. ^ a b c d "Super Starburst Galaxy - NASA" (http://www.spitzer.caltech.edu/Media/releases/ssc2008-12/ssc2008-12a.shtml). Caltech.edu. Retrieved 2008-09-08. 2. ^ arXiv, Spectroscopic Confirmation Of An Extreme Starburst At Redshift 4.547 (http://fr.arxiv.org/abs/0806.0657), Tue, 3 Jun 2008 22:59:35 GMT; doi:10.1086/590555 (http://dx.doi.org/10.1086%2F590555) Bibcode: 2008ApJ...681L..53C (http://adsabs.harvard.edu/abs/2008ApJ...681L..53C) 3. ^ SIMBAD, EQ J100054+023435 (http://simbad.u-strasbg.fr/simbad/sim-id?Ident=%404486334&Name=EQ%20J100054%2b023435) 4. ^ a b c d e Press Release, NASA (July 10, 2008). "Rare 'Star-Making Machine' Found In Distant Universe" (http://web.archive.org/web/20080728004641/http://www.spitzer.caltech.edu/Media/releases/ssc2008-12/release.shtml). caltech.edu. Archived from the original (http://www.spitzer.caltech.edu/Media/releases/ssc2008-12/release.shtml) on 2008-07-28. Retrieved 2008-09-08. 5. ^ a b c Plait, Phil (July 10, 2008). " "Baby Boom" galaxy cranks out cranky booming babies" (http://blogs.discovermagazine.com/badastronomy/2008/07/10/baby- boom-galaxy-cranks-out-cranky-booming-babies/). Discover Magazine. Archived http://en.wikipedia.org/wiki/Baby_Boom_Galaxy 2/3 9/25/2014 Baby Boom Galaxy - Wikipedia, the free encyclopedia (http://web.archive.org/web/20080801090922/http://blogs.discovermagazine.com/badastronomy/2008/07/10/baby-boom-galaxy-cranks-out-cranky-booming- babies/) from the original on 1 August 2008. Retrieved 2008-09-08. 6. ^ " 'Baby Boom' galaxy found in distant cosmos" (http://web.archive.org/web/20080724044509/http://www.spaceinfo.com.au/spitzer20080712.html). Spaceinfo.com.au. Archived from the original (http://www.spaceinfo.com.au/spitzer20080712.html) on 2008-07-24. Retrieved 2008-09-08. 7. ^ a b Space.com Staff (10 July 2008). "Cosmic Baby Boom Baffles Astronomers" (http://www.space.com/scienceastronomy/080710-star-birth.html). Space.com. Archived (http://web.archive.org/web/20080907184042/http://www.space.com/scienceastronomy/080710-star-birth.html) from the original on 7 September 2008. Retrieved 2008-09-08. 8. ^ Mirsky, Steve (July 17, 2008). "Baby Boom Galaxy Churning Out Stars" (http://www.sciam.com/podcast/episode.cfm?id=31218966-0670-652E- 8A231E3794D81660). Scientific American. Archived (http://web.archive.org/web/20080916075324/http://www.sciam.com/podcast/episode.cfm?id=31218966- 0670-652E-8A231E3794D81660) from the original on 16 September 2008. Retrieved 2008-09-08.

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Categories: Astronomical objects discovered in 2008 Starburst galaxies Peculiar galaxies Sextans (constellation)

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