Astronomy:NGC 632

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NGC 632
NGC 632 imaged by Legacy Surveys
Observation data (J2000 epoch)
ConstellationPisces
Right ascension 01h 37m 17.5512s[1]
Declination+05° 52′ 38.550″[1]
Redshift0.010567±0.0000200[1]
Helio radial velocity3,168±6 km/s[1]
Distance125.65 ± 6.74 Mly (38.525 ± 2.066 Mpc)[2]
Group or clusterNGC 645 Group (LGG 28)
Apparent magnitude (V)12.4[1]
Characteristics
TypeS0[1]
Size~62,100 ly (19.05 kpc) (estimated)[1]
Apparent size (V)1.0′ × 0.8′[1]
Other designations
IRAS 01346+0537, UGC 1157, MCG+01-05-010, PGC 6007[1]

NGC 632 is a lenticular galaxy in the constellation of Pisces. Its velocity with respect to the cosmic microwave background is 2,868±22 km/s, which corresponds to a Hubble distance of 138.0 ± 9.7 Mly (42.30 ± 2.98 Mpc).[1] However, eight non-redshift measurements give a closer mean distance of 125.65 ± 6.74 Mly (38.525 ± 2.066 Mpc).[2] It was discovered by British astronomer John Herschel on 24 September 1830.[3]

NGC 632 has a possible active galactic nucleus, i.e. it has a compact region at the center of a galaxy that emits a significant amount of energy across the electromagnetic spectrum, with characteristics indicating that this luminosity is not produced by the stars.[4][5]

NGC 632 has a nucleus which shines in the ultraviolet range, and is thus listed in Markarian's catalogue as Mrk 1002.[6]

NGC 645 Group

NGC 632 is a member of the NGC 645 group (also known as LGG 28). This group has 5 galaxies, including NGC 638, NGC 645, UGC 1137 (d), and UGC 1172 (d).[7][8]

Supernova

One supernova has been observed in NGC 632:

See also

References

  1. ↑ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 "Results for object NGC 632". NASA and Caltech. https://ned.ipac.caltech.edu/byname?objname=NGC+632. 
  2. ↑ 2.0 2.1 "Distance Results for NGC 632". NASA. https://ned.ipac.caltech.edu/cgi-bin/nDistance?name=NGC+632. 
  3. ↑ Seligman, Courtney. "New General Catalogue Objects: NGC 632". https://cseligman.com/text/atlas/ngc6.htm#632. 
  4. ↑ Asmus, D.; Greenwell, C. L.; Gandhi, P.; Boorman, P. G.; Aird, J.; Alexander, D. M.; Assef, R. J.; Baldi, R. D. et al. (2020). "Local AGN survey (LASr): I. Galaxy sample, infrared colour selection, and predictions for AGN within 100 MPC". Monthly Notices of the Royal Astronomical Society 494 (2): 1784. doi:10.1093/mnras/staa766. Bibcode: 2020MNRAS.494.1784A. 
  5. ↑ "NGC 632". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+632. 
  6. ↑ Markarian, B. E.; Lipovetskii, V. A.; Stepanian, D. A. (1977). "Galaxies with ultraviolet continuum. XI.". Astrofizika 13: 397. Bibcode: 1977Afz....13..397M. 
  7. ↑ Garcia, A. M. (1993). "General study of group membership. II. Determination of nearby groups". Astronomy and Astrophysics Supplement Series 100: 47. Bibcode: 1993A&AS..100...47G. 
  8. ↑ "LGG 28". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=LGG+28. 
  9. ↑ Halderson, E.; Modjaz, M.; Shefler, T.; King, J. Y.; Papenkova, M.; Li, W. D.; Treffers, R. R.; Filippenko, A. V. et al. (1998). "Supernova 1998es in NGC 632". International Astronomical Union Circular (7050): 1. Bibcode: 1998IAUC.7050....1H. http://www.cbat.eps.harvard.edu/iauc/07000/07050.html#Item1. 
  10. ↑ "SN 1998es". IAU. https://www.wis-tns.org/object/1998es. 

Coordinates: Sky map 01h 37m 17.5512s, +05° 52′ 38.550″



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