NGC 2655

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NGC 2655
NGC2655 - HST - Potw1817a.tif
NGC 2655 by Hubble Space Telescope.
Observation data (J2000 epoch)
Constellation Camelopardalis
Right ascension 08h 55m 37.7s [1]
Declination +78° 13′ 03″ [1]
Redshift 1400 ± 1 km/s [1]
Distance 63 Mly (19.5 Mpc) [1]
Apparent magnitude  (V)10.1
Characteristics
Type SAB(s)0/a [1]
Apparent size  (V)4.9′ × 4.1′ [1]
Other designations
Arp 225, UGC 4637, PGC 25069 [1]
NGC 2655 from Planewave CDK24 in Julian, CA NGC2655 S1 Crop CB HVLG Crop VBNR GE SCR LHE2 CR505050100 SS2083 Levels.jpg
NGC 2655 from Planewave CDK24 in Julian, CA

NGC 2655 is a lenticular galaxy in the constellation Camelopardalis. It is at a distance of 60 million light years from Earth. NGC 2655 is a Seyfert galaxy. The galaxy has asymmetric dust lanes in the centre of the galaxy, tidal arms and extended neutral hydrogen gas and may have recently experienced a merger. The complex dynamics of the HI and optical tails suggest the galaxy may have undergone more mergers in the past. A weak bar has been detected in infrared H band. The diameter of the disk of the galaxy is estimated to be 60 Kpc (195,000 ly). [2]

William Herschel discovered NGC 2655 in September 26, 1802 and described it as very bright and considerably large. The galaxy can be glimpsed with a 4-inch telescope under dark skies nearly 10° from the north celestial pole. [3] One supernova has been observed in NGC 2655, SN 2011B, [4] a type Ia with peak magnitude 12.8. [5]

NGC 2655 is the brightest member of the NGC 2655 group, which also contains the Sc galaxy NGC 2715, NGC 2591, and NGC 2748. [6] [7] One of the gas structures of NGC 2655 is trailing off toward the small galaxy UGC 4714. [2]

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<span class="mw-page-title-main">NGC 5965</span> Spiral galaxy in the constellation Draco

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<span class="mw-page-title-main">NGC 3640</span> Elliptical galaxy in the constellation Leo

NGC 3640 is an elliptical galaxy located in the constellation Leo. It is located at a distance of circa 75 million light years from Earth, which, given its apparent dimensions, means that NGC 3640 is about 90,000 light years across. It was discovered by William Herschel on February 23, 1784. It is a member of the NGC 3640 Group of galaxies, which is a member of the Leo II Groups, a series of galaxies and galaxy clusters strung out from the right edge of the Virgo Supercluster.

<span class="mw-page-title-main">NGC 3656</span> Peculiar galaxy in the constellation Ursa Major

NGC 3656 is a peculiar galaxy formed by the collision of two galaxies in the constellation of Ursa Major. It is located about 135 million light years away from Earth, which means, given its apparent dimensions, that NGC 3656 is approximately 70,000 light years across. It was discovered by William Herschel on April 14, 1789.

<span class="mw-page-title-main">NGC 2906</span> Spiral galaxy in the constellation Leo

NGC 2906 is a spiral galaxy located in the constellation Leo. It is located at a distance of circa 120 million light years from Earth, which, given its apparent dimensions, means that NGC 2906 is about 75,000 light years across. It was discovered by William Herschel on December 28, 1785.

<span class="mw-page-title-main">NGC 3393</span> Galaxy in the constellation Hydra

NGC 3393 is a barred spiral galaxy located in the constellation Hydra. It is located at a distance of circa 180 million light-years from Earth, which, given its apparent dimensions, means that NGC 3393 is about 140,000 light-years across. It was discovered by John Herschel on March 24, 1835. It is a Type II Seyfert galaxy. The galaxy is known to host two supermassive black holes, which are the nearest known pair of supermassive black holes to Earth.

References

  1. 1 2 3 4 5 6 7 "NASA/IPAC Extragalactic Database". Results for NGC 2655. Retrieved 2016-01-18.
  2. 1 2 Sparke, Linda S.; van Moorsel, Gustaaf; Erwin, Peter; Wehner, Elizabeth M. H. (January 2008). "NGC 2655: from Inner Polar Ring to Outer Shells and Tails". Astronomical Journal. 135 (1): 99–111. Bibcode:2008AJ....135...99S. doi: 10.1088/0004-6256/135/1/99 .
  3. ↑ Stephen James O'Meara (2007). Deep-Sky Companions: Hidden Treasures. Cambridge University Press. p. 240. ISBN   9781139463737.
  4. ↑ List of Supernovae IAU Central Bureau for Astronomical Telegrams. Retrieved 29 December 2015.
  5. ↑ List of supernovae sorted by Magnitude for 2011
  6. ↑ "A List of Nearby Galaxy Groups". Atlas of the Universe. Retrieved 2016-01-25.
  7. ↑ Dmitry Makarov; Igor Karachentsev (2011). "Galaxy groups and clouds in the local (z~ 0.01) Universe". MNRAS. 412 (4): 2498–2520. arXiv: 1011.6277 . Bibcode:2011MNRAS.412.2498M. doi:10.1111/j.1365-2966.2010.18071.x. S2CID   119194025. Archived from the original on 31 January 2016. Retrieved 1 January 2016.
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