NGC 2207 and IC 2163

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NGC 2207 / IC 2163
NGC2207+IC2163.jpg
Hubble Space Telescope image of NGC 2207 (left) and IC 2163 (right)
Observation data (J2000 epoch)
Constellation Canis Major
Right ascension 06h 16m 22.0s / 06h 16m 28.0s [1]
Declination −21° 22′ 22″ / −21° 22′ 33″ [1]
Redshift 2741 ± 15 / 2765 ± 20 km/s [1]
Distance 81 ± 39 Mly
(24.9 ± 12 Mpc) [2]
Apparent magnitude  (V)12.2 / 11.6 [1]
Characteristics
Type SAB(rs)bc pec / SB(rs)c pec [1]
Apparent size  (V)4.3′ × 2.8′ / 3.0′ × 1.2′ [1]
Notable features colliding galaxies
Other designations
RR132a / RR132b, [1] PGC 018749 / 018751, UGCA 124/125 [1]

NGC 2207 and IC 2163 are a pair of colliding spiral galaxies about 80 million light-years away [2] in the constellation Canis Major. Both galaxies were discovered by John Herschel in 1835.

Contents

MIRI image of NGC 2207 and IC 2163, taken by the James Webb Space Telescope Galaxies IC 2163 and NGC 2207 (Webb MIRI Image) (2024-136).png
MIRI image of NGC 2207 and IC 2163, taken by the James Webb Space Telescope

The larger spiral, NGC 2207, is classified as an intermediate spiral galaxy exhibiting a weak inner ring structure around the central bar. The smaller companion spiral, IC 2163, is classified as a barred spiral galaxy that also exhibits a weak inner ring and an elongated spiral arm that is likely being stretched by tidal forces with the larger companion. Both galaxies contain a vast amount of dust and gas, and are beginning to exhibit enhanced rates of star formation, as seen in infrared images.

NGC 2207 is in the process of colliding and merging with IC 2163. But unlike the Antennae or the Mice Galaxies, they are still two separate spiral galaxies. They are only in the first step of colliding and merging, with NGC 2207 being in the process of tidally stripping IC 2163. Soon they will collide, probably looking a bit more like the Mice Galaxies. In about a billion years' time they are expected to merge and become an elliptical galaxy or perhaps a disk galaxy. [3]

Supernovae

Five supernovae have been observed in NGC 2207:

Two supernovae have been observed in IC 2163: [10]

In addition, one supernova has been observed on the outskirts of the group:

See also

Related Research Articles

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References

  1. 1 2 3 4 5 6 7 8 "NASA/IPAC Extragalactic Database". Results for NGC 2207 / IC 2163. Retrieved 2006-11-25.
  2. 1 2 "Distance Results for NGC 2207". NASA/IPAC Extragalactic Database. Retrieved 2010-05-22.
  3. ↑ Ueda, Junko; Iono, Daisuke; et al. (12 August 2014). "Cold molecular gas in merger remnants. I. Formation of molecular gas disks". The Astrophysical Journal Supplement Series . 214 (1): 1. arXiv: 1407.6873 . Bibcode:2014ApJS..214....1U. doi:10.1088/0067-0049/214/1/1. ISSN   1538-4365. S2CID   716993.
  4. ↑ Kirshner, R. P.; Arp, H. C.; Dunlap, J. R. (June 1976). "Observations of supernovae - 1975a in NGC 2207 and 1975b in the Perseus cluster". The Astrophysical Journal . 207 (1): 44. Bibcode:1976ApJ...207...44K. doi: 10.1086/154465 . ISSN   0004-637X.
  5. ↑ Jha, S.; Garnavich, P.; Challis, P.; Kirshner, R.; et al. (October 1999). "Supernova 1999ec in NGC 2207". International Astronomical Union Circular (7269): 2. Bibcode:1999IAUC.7269....2J. ISSN   0081-0304.
  6. ↑ van den Bergh, Sidney; Li, Weidong; Filippenko, Alexei V. (November 2003). "Classifications of the Host Galaxies of Supernovae, Set II". Publications of the Astronomical Society of the Pacific . 115 (813): 1280–1288. arXiv: astro-ph/0308195 . Bibcode:2003PASP..115.1280V. doi:10.1086/379106. ISSN   0004-6280. S2CID   2015979.
  7. ↑ Klotz, Alain; Conseil, E.; et al. (March 2013). "Supernova 2013ai in NGC 2207 = Psn J06161835-2122329". Central Bureau Electronic Telegrams . 3431 (3431): 1. Bibcode:2013CBET.3431....1K.
  8. ↑ "Transient Name Server". Entry for AT 2019eez. Retrieved 10 August 2024.
  9. ↑ Strader, Jay (30 April 2019). "ATel #12706: Spectroscopic classification of ASASSN-19kz as a young Type II supernova in NGC 2207". The Astronomer's Telegram. Retrieved 10 August 2024.
  10. ↑ 2018lab in IC 2136 (David Bishop)
  11. ↑ Jencson, Jacob (14 June 2017). "ATel #10489: Pre-discovery limits on SPIRITS17lb, a probable supernova in IC 2163". The Astronomer's Telegram. Retrieved 10 August 2024.
  12. ↑ "Transient Name Server". Entry for SN 2018lab. Retrieved 10 August 2024.
  13. ↑ "Transient Name Server". Entry for SN 2010jp. Retrieved 10 August 2024.
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