NGC 2770 explained

NGC 2770
Ra:[1]
Dist Ly:23.67Mpc[2]
27Mpc[3]
Z:[4]
Type:SBc
Appmag V:12.0[5]
Size V: (NIR)
Notes:Four supernovae[6]
Names:LEDA 25806, MCG+06-20-038, NGC 2770, UGC 4806[7]

NGC 2770 is a spiral galaxy in the northern constellation of Lynx,[5] near the northern constellation border with Cancer. It was discovered by German-born astronomer William Herschel on December 7, 1785. J. L. E. Dreyer described it as, "faint, large, much extended 150°, mottled but not resolved, 2 stars to north".[8] NGC 2770 was the target for the first binocular image produced by the Large Binocular Telescope.[9]

The morphological classification of SBc[2] indicates a barred spiral with moderately-wound arms. The physical properties of this galaxy are similar to those of the Milky Way. The combined mass of stars in the galaxy is estimated at, and it has a star formation rate of  y−1. There are no apparent perturbations of the galaxy due to suspected interaction with the companion galaxy, NGC 2770B.[10]

As of 2017, up to four supernovae events have been discovered in this galaxy.[6] Three were of Type Ib: SN 1999eh, SN 2007uy, and SN 2008D.[10] The last of these was the first supernova detected by the X-rays released very early on in its formation, rather than by the optical light emitted during the later stages, which allowed the first moments of the outburst to be observed. It is possible that NGC 2770's interactions with a suspected companion galaxy may have created the massive stars causing this activity.[11] SN 2015bh, discovered in NGC 2770 in February 2015,[12] was either a Type II supernova or the hyper-eruption of a luminous blue variable.[6]

Further reading

External links

Notes and References

  1. The Two Micron All Sky Survey (2MASS) . 1 . Skrutskie . Michael F. . Cutri . Roc M. . Stiening . Rae . Weinberg . Martin D. . Schneider . Stephen E. . Carpenter . John M. . Beichman . Charles A. . Capps . Richard W. . Chester . Thomas . Elias . Jonathan H. . Huchra . John P. . Liebert . James W. . Lonsdale . Carol J. . Monet . David G. . Price . Stephan . Seitzer . Patrick . Jarrett . Thomas H. . Kirkpatrick . J. Davy . Gizis . John E. . Howard . Elizabeth V. . Evans . Tracey E. . Fowler . John W. . Fullmer . Linda . Hurt . Robert L. . Light . Robert M. . Kopan . Eugene L. . Marsh . Kenneth A. . McCallon . Howard L. . Tam . Robert . Van Dyk . Schuyler D. . Wheelock . Sherry L. . The Astronomical Journal . 1 February 2006 . 131 . 2 . 1163–1183 . 2006AJ....131.1163S . 0004-6256 . 10.1086/498708 . 18913331 . free .
  2. A Catalog of Visually Classified Galaxies in the Local (z ~ 0.01) Universe . Ann . H. B. . Seo . Mira . Ha . D. K. . 1 . The Astrophysical Journal Supplement Series . 217 . 2 . 27–49 . 2015 . 2015ApJS..217...27A . 1502.03545 . 10.1088/0067-0049/217/2/27 . 119253507 .
  3. Soderberg . Alicia . Alicia Soderberg. etal . May 22, 2008 . An extremely luminous X-ray outburst at the birth of a supernova . Nature . 453 . 7194 . 469–474 . 0802.1712 . 10.1038/nature06997 . 18497815. 2008Natur.453..469S . 453215 .
  4. NIBLES: an H I census of stellar mass selected SDSS galaxies. I. The Nançay H I survey . 1 . van Driel . W. . Butcher . Z. . Schneider . S. . Lehnert . M. D. . Minchin . R. . Blyth . S. -L. . Chemin . L. . Hallet . N. . Joseph . T. . Kotze . P. . Kraan-Korteweg . R. C. . Olofsson . A. O. H. . Ramatsoku . M. . Astronomy & Astrophysics . 595 . A118 . 43 . November 2016 . 1607.02787 . 2016A&A...595A.118V . 10.1051/0004-6361/201528048 . 118623916 .
  5. Web site: NASA/IPAC Extragalactic Database . Results for NGC 2770 . 2008-05-26.
  6. SN 2015bh: NGC 2770's 4th supernova or a luminous blue variable on its way to a Wolf-Rayet star? . Thöne . C. C. . de Ugarte Postigo . A. . Leloudas . G. . Gall . C. . Cano . Z. . Maeda . K. . Schulze . S. . Campana . S. . Wiersema . K. . Groh . J. . de la Rosa . J. . Bauer . F. E. . Malesani . D. . Maund . J. . Morrell . N. . Beletsky . Y. . 1 . Astronomy & Astrophysics . 599 . A129 . 29 . March 2017 . 1606.09025 . 2017A&A...599A.129T . 10.1051/0004-6361/201629968 . 56266352 .
  7. NGC 2770 . 2020-09-07 .
  8. Web site: Courtney . Seligman . NGC Objects: NGC 2600 - 2649 . Celestial Atlas . 2020-09-07 .
  9. Web site: LBT Press Release - First Binocular Light . 2008-05-22 . 2011-07-25 . https://web.archive.org/web/20110725231212/http://medusa.as.arizona.edu/lbto/firstbinocularlight_press_release.htm . dead .
  10. NGC 2770: A Supernova Ib Factory? . Thöne . Christina C. . Michałowski . Michał J. . Leloudas . Giorgos . Cox . Nick L. J. . Fynbo . Johan P. U. . Sollerman . Jesper . Hjorth . Jens . Vreeswijk . Paul M. . 1 . The Astrophysical Journal . 698 . 2 . 1307–1320 . June 2009 . 0807.0473 . 2009ApJ...698.1307T . 10.1088/0004-637X/698/2/1307 . 118697339 .
  11. Web site: Catching the Light of a Baby Supernova . Gemini Observatory . 7 July 2015 . https://web.archive.org/web/20150823040222/http://www.gemini.edu/node/281 . 23 August 2015 . dead .
  12. Web site: List of Supernovae . IAU Central Bureau for Astronomical Telegrams. IAU . 19 February 2017 .

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