Astronomy:NGC 1741

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Short description: Distant pair of interacting galaxies in the constellation Eridanus
NGC 1741
HCG 31 HST.jpg
The pair: NGC 1741A (left) and NGC 1741B (right) as taken by the Hubble Space Telescope
Observation data (J2000 epoch)
ConstellationEridanus
Right ascension 05h 01m 38.3s
Declination−04° 15′ 25.2″
Redshift0.013473 ± 0.000018
Helio radial velocity4 039 ± 5 km/s
Distance56.4 ± 3.9 Mpc (184 ± 13 Mly)h−10.73
Apparent magnitude (V)14.4 / 14.6
Apparent magnitude (B)15.0 / 15.2
Characteristics
TypeIm D
Apparent size (V)1.0' × 0.3' / 0.4' × 0.15'
Other designations
  • HCG 31A / 31B
  • PGC 16574 / 16570
  • MK 1089
  • IRAS04591-0419
  • MGC -1-13-45
  • ARP 259
References: [1][2]

NGC 1741 is a distant pair of interacting galaxies (NGC 1741A and NGC 1741B) in the Eridanus constellation.[3][4] It was discovered on 6 January 1878 by French astronomer Édouard Stephan.[5] As a result of the collision, the galaxies are in a rapid starbust phase.[6][4] The galaxies are classed as Wolf–Rayet galaxies due to their high content of rare Wolf–Rayet stars.[7]

This pair of spiral galaxies is made up of PGC 16570 (NGC 1741B) and PGC 16574 (NGC 1741A). This pair is part of the Halton Arp catalog as Arp 259 and the Hickson Compact Group as HCG 31A (NGC 1741A) and HCG 31B (NGC 1741B).[6][5]

References

  1. ↑ "NGC 1741". http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+1741. 
  2. ↑ "NASA/IPAC Extragalactic Database". http://nedwww.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=NGC+1741. 
  3. ↑ "Revised NGC Data for NGC 1741". http://spider.seds.org/ngc/revngcic.cgi?NGC1741. 
  4. ↑ 4.0 4.1 "Hubble Reveals Young Starburst Activity in Colliding Galaxies". https://www.spacetelescope.org/images/opo9316a/. 
  5. ↑ 5.0 5.1 "New General Catalog Objects: NGC 1700 - 1749". http://cseligman.com/text/atlas/ngc17.htm#1741. 
  6. ↑ 6.0 6.1 Johnson, Kelsey E.; Vacca, William D.; Leitherer, Claus; Conti, Peter S.; Lipscy, Sarah J. (1 April 1999). "The Very Young Starburst Merger System NGC 1741*" (in en). The Astronomical Journal 117 (4): 1708–1724. doi:10.1086/300800. ISSN 1538-3881. Bibcode: 1999AJ....117.1708J. 
  7. ↑ Conti, Peter S.; Leitherer, Claus; Vacca, William D. (20 April 2017). "Hubble Space Telescope Ultraviolet Spectroscopy of NGC 1741: A Nearby Template for Distant Energetic Starbursts*" (in en). The Astrophysical Journal Letters 461 (2). doi:10.1086/310005. ISSN 1538-4357. 

External links

Coordinates: Sky map 05h 01m 38.3s, −04° 15′ 25.2″




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