Astronomy:UGC 5460

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UGC 5460
UGC 5460 imaged by the Hubble Space Telescope
Observation data (J2000 epoch)
ConstellationUrsa Major
Right ascension 10h 08m 09.1731s[1]
Declination+51° 50′ 41.583″[1]
Redshift0.003646[1]
Helio radial velocity1,093±5 km/s[1]
Distance61.4 ± 4.4 Mly (18.82 ± 1.34 Mpc)[1]
Group or clusterNGC 3079 Group (LGG 188)
Apparent magnitude (V)13.9[1]
Characteristics
TypeSB(rs)d[1]
Size~43,900 ly (13.46 kpc) (estimated)[1]
Other designations
IRAS F10048+5205, MCG+09-17-028, PGC 29469[1]

UGC 5460 is a barred spiral galaxy in the constellation of Ursa Major. Its velocity with respect to the cosmic microwave background for is 1,276±14 km/s, which corresponds to a Hubble distance of 61.4 ± 4.4 Mly (18.82 ± 1.34 Mpc).[1] In addition, two non redshift measurements give a distance of 58.1 ± 6.8 Mly (17.8 ± 2.1 Mpc).[2] The first known reference to this galaxy comes from Part 1 of the Morphological Catalogue of Galaxies, where it is listed as MCG +09-17-028.

The SIMBAD database lists UGC 5460 as an active galaxy nucleus candidate, i.e. it has a compact region at the center that emits a significant amount of energy across the electromagnetic spectrum, with characteristics indicating that this luminosity is not produced by the stars.[3]

NGC 3079 Group

UGC 5460 is a member of the NGC 3079 Group (also known as LGG 188), which contains six galaxies. The other five galaxies in the group are: NGC 3073, NGC 3079, UGC 5421, UGC 5459, and UGC 5479.[4]

Supernovae

Swift UVOT optical (left), UVOT UV (middle), and XRT X-ray (right) images of SN 2011ht and its host galaxy UGC 5460.

Two supernovae have been observed in UGC 5460:

  • SN 2011ht (Type IIn, mag. 17) was discovered by Tom Boles on 29 September 2011.[5][6] This supernova was initially suspected of being a luminous blue variable.[5] Later analysis suggested that it belongs to an unusual group of SNe IIn, including SN 1994W and SN 2009kn, and perhaps SN 2005cl, that warrants a new designation of Type IIn-P.[7]
  • SN 2015as (Type IIb, mag. 16) was discovered by Ken'ichi Nishimura on 15 November 2015.[8] Although initially classified as Type II,[9] later analysis concluded it to be Type IIb.[10]

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 UGC 5460". NASA and Caltech. https://ned.ipac.caltech.edu/byname?objname=UGC+5460. 
  2. ↑ "Distance Results for UGC 5460". NASA. https://ned.ipac.caltech.edu/cgi-bin/nDistance?name=UGC+5460. 
  3. ↑ "UGC 5460". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=UGC+5460. 
  4. ↑ 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. 
  5. ↑ 5.0 5.1 Boles, Tom; Pastorello, A.; Stanishev, V.; Smartt, S. J.; Fraser, M.; Lindborg, M. (2011). "PSN J10081059+5150570 in UGC 5460". Central Bureau Electronic Telegrams (2851): 1. Bibcode: 2011CBET.2851....1B. http://www.cbat.eps.harvard.edu/iau/cbet/002800/CBET002851.txt. 
  6. ↑ "SN 2011ht". IAU. https://www.wis-tns.org/object/2011ht. 
  7. ↑ Mauerhan, Jon C.; Smith, Nathan; Silverman, Jeffrey M.; Filippenko, Alexei V.; Morgan, Adam N.; Cenko, S. Bradley; Ganeshalingam, Mohan; Clubb, Kelsey I. et al. (2013). "SN 2011ht: Confirming a class of interacting supernovae with plateau light curves (Type IIn-P)". Monthly Notices of the Royal Astronomical Society 431 (3): 2599–2611. doi:10.1093/mnras/stt360. 
  8. ↑ "SN 2015as". IAU. https://www.wis-tns.org/object/2015as. 
  9. ↑ Tartaglia, L.; Pastorello, A.; Benetti, S.; Cappellaro, E.; Elias-Rosa, N.; Ochner, P.; Terreran, G.; Tomasella, L. et al. (2015). "Asiago spectroscopic classification of PSN J01072038+3223598 and PSN J10081137+5150409". The Astronomer's Telegram 8291: 1. Bibcode: 2015ATel.8291....1T. https://www.astronomerstelegram.org/?read=8291. 
  10. ↑ Gangopadhyay, Anjasha; Misra, Kuntal; Pastorello, A.; Sahu, D. K.; Tomasella, L.; Tartaglia, L.; Singh, Mridweeka; Dastidar, Raya et al. (2018). "SN 2015as: A low-luminosity Type IIb supernova without an early light-curve peak". Monthly Notices of the Royal Astronomical Society 476 (3): 3611. doi:10.1093/mnras/sty478. Bibcode: 2018MNRAS.476.3611G. 



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