| HXMM01 | |
|---|---|
 HXXM01, a rapidly merging pair of galaxies that will in time see a massive burst of star formation. | |
| Observation data (J2000 epoch) | |
| Constellation | Cetus |
| Right ascension | 02h 20m 16.65s 02h 20m 16.58s |
| Declination | −06° 01′ 41.9″ −06° 01′ 44.3″ |
| Redshift | 2.307 |
| Characteristics | |
| Mass | 1×1012–1×1015 M☉ |
| Mass/Light ratio | 3.0×1013–3.4×1013 M☉/L☉ |
| Other designations | |
| 1HERMES S250 J022016.5−060143 | |
HXMM01, known more formally as 1HERMES S250 J022016.5−060143, is a starburst galaxy[2] located in the northwestern portion of the constellation Cetus.[note 1] Discovered in 2013 by a team at the University of California, Irvine, it was discovered that HXMM01 is actually still forming from its two parent galaxies as part of the "brightest, most luminous and most gas-rich submillimeter-bright galaxy merger known." When the merger is complete, HXMM01 will rapidly evolve to become a giant elliptical galaxy with a mass about four times that of the Milky Way.[2][3] As of 2013, HXMM01 has been observed to form about 2,000 M☉ of stars every year, with an efficiency ten times greater than that of typical galaxies[2][note 2] and far more than the Milky Way's 0.68–1.45 M☉ per year.[4]
- ^ Wardlow, J. L.; Cooray, A.; De Bernardis, F.; Amblard, A.; Arumugam, V.; Aussel, H.; Baker, A. J.; Béthermin, M.; Blundell, R.; Bock, J.; Boselli, A.; Bridge, C.; Buat, V.; Burgarella, D.; Bussmann, R. S.; Cabrera-Lavers, A.; Calanog, J.; Carpenter, J. M.; Casey, C. M.; Castro-Rodríguez, N.; Cava, A.; Chanial, P.; Chapin, E.; Chapman, S. C.; Clements, D. L.; Conley, A.; Cox, P.; Dowell, C. D.; Dye, S.; Eales, S. (2013). "HerMES: Candidate Gravitationally Lensed Galaxies and Lensing Statistics at Submillimeter Wavelengths". The Astrophysical Journal. 762 (1): 59. arXiv:1205.3778. Bibcode:2013ApJ...762...59W. doi:10.1088/0004-637X/762/1/59. S2CID 31873017.
- ^ a b c d Fu, H.; Cooray, A.; Feruglio, C.; Ivison, R. J.; Riechers, D. A.; Gurwell, M.; Bussmann, R. S.; Harris, A. I.; Altieri, B.; Aussel, H.; Baker, A. J.; Bock, J.; Boylan-Kolchin, M.; Bridge, C.; Calanog, J. A.; Casey, C. M.; Cava, A.; Chapman, S. C.; Clements, D. L.; Conley, A.; Cox, P.; Farrah, D.; Frayer, D.; Hopwood, R.; Jia, J.; Magdis, G.; Marsden, G.; Martínez-Navajas, P.; Negrello, M.; Neri, R. (2013). "The rapid assembly of an elliptical galaxy of 400 billion solar masses at a redshift of 2.3". Nature. 498 (7454): 338–341. arXiv:1305.4930. Bibcode:2013Natur.498..338F. doi:10.1038/nature12184. PMID 23698363. S2CID 4399809.
- ^ University of California, Irvine (May 22, 2013). "Fragile mega-galaxy is missing link in history of cosmos". phys.org.
- ^ Robitaille, T. P.; Whitney, B. A. (2010). "The Present-Day Star Formation Rate of the Milky Way Determined Fromspitzer-Detected Young Stellar Objects". The Astrophysical Journal. 710 (1): L11–L15. arXiv:1001.3672. Bibcode:2010ApJ...710L..11R. doi:10.1088/2041-8205/710/1/L11. S2CID 118703635.
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