IC 5145

IC 5145
SDSS image of IC 5145
Observation data (J2000 epoch)
ConstellationPegasus
Right ascension21h 54m 23.06s
Declination+15° 09′ 24.6″
Redshift0.024594
Heliocentric radial velocity7,373 km/s
Distance356 Mly (109.2 Mpc)
Apparent magnitude (V)14.30
Surface brightness13.8 arcmin
Characteristics
TypeSab
Size1.6 x 0.9 arcmin
Other designations
UGC 11844, CGCG 427-041, PGC 67619, NSA 149423, WBL 674-003, MCG +02-55-028, 2MASX J21542304+1509244, 2MASS J21542306+1509249, SDSS J215423.07+150924.9, LEDA 67619

IC 5145 is a type Sab spiral galaxy[1] located in the constellation Pegasus.[2][3] It is located 356 million light-years from the Solar System[4] and was discovered by Edward Emerson Barnard, although the year he discovered it is unknown.[5]

The luminosity class of IC 5145 is I-II and it has a broad H II region.[4] Its dimensions measure 1.60 x 0.9 arcmin.[6]

Supernovae

Six supernovae have been discovered in IC 5145 so far: SN 2002dn, SN 2003hy, SN 2010iq, PSN J21542359+1509224, SN 2020pkj, and SN 2022lfa.

SN 2002dn

SN 2002dn[7] was discovered in IC 5145 by astronomer W. D. Li from University of California at Berkeley via unfiltered KAIT CCD images taken on June 15 and June 17, 2002.[8] It was located 8".8 west and 18".3 north of the nucleus.[9] A further inspection done by A. V. Filippenko, R. Chornock and R. J. Foley, using the Shane 3-m reflector at Lick Observatory confirmed SN 2002dn was a Type Ic supernova which resembled SN 1987m.[8][7]

SN 2003hy

SN 2003hy[10] was discovered by British amateur astronomer, Tom Boles from Coddenham, England on September 14, through unfiltered CCD images using a 0.35-m reflector as part of the course done by U.K. Nova/Supernova Patrol.[11] Surprising, SN 2003hy was also discovered by another amateur astronomer, Mark Armstrong who saw it on the same unfiltered CCD images and via a 0.35m reflector.[11] It had a magnitude of 16.6[10] and was located 5".5 west and 12".5 north of the nucleus.[12] The supernova was Type IIn.[10]

A 14-minute exposure of SN 2003hy taken on December 28, 2003, shows it is much dimmer than 19.4 magnitude, which the dimmest stars are magnitude 20.[13]

SN 2010iq

Lick Observatory Supernova Search discovered SN 2010iq on October 11, 2010.[14] It was reported by A. Narla, S. B. Cenko, W. Li and A. V. Filippenko from University of California, Berkeley through unfiltered CCD images.[15] It was located 2".8 east and 4".4 south of the nucleus with a magnitude of 18.2.[14] This supernova was Type Ic.[14]

PSN J21542359+1509224

PSN J21542359+1509224 was discovered on 13 May 2014 by Bin Wang and Xing Gao.[16] It was located 5".3 east and 0".9 south of the nucleus with a magnitude of 18.3. This supernova had an unknown type.[16]

SN 2020pkj

SN 2020pkj (type Ia, mag. 19.2) was discovered on 15 July 2020 by ZTF.[17]

SN 2022lfa

SN 2022lfa[18] was discovered on May 28, 2022, by Zwicky Transient Facility (ZTF) through Palomar 1.2m Oschin telescope on the behalf of K. De from Caltech.[19] On June 28, 2022, astronomers confirmed that SN 2022lfa is a Type Ic supernova via a spectrum obtained on MJD 59755.43 using the 3-m Shane telescope at Lick Observatory.[20]

References

  1. ^ "HyperLeda -object description". atlas.obs-hp.fr. Retrieved 2024-05-06.
  2. ^ Ford, Dominic. "IC5145 (Galaxy)". In-The-Sky.org. Retrieved 2024-05-06.
  3. ^ Astronomy, Go. "IC 5145 | galaxy in Pegasus | IC List | GO ASTRONOMY". Go-Astronomy.com. Retrieved 2024-05-06.
  4. ^ a b "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2024-05-06.
  5. ^ "Index Catalog Objects: IC 5100 - 5149". cseligman.com. Retrieved 2024-05-06.
  6. ^ "Revised IC Data for IC 5145". spider.seds.org. Retrieved 2024-05-06.
  7. ^ a b "SN 2002dn | Transient Name Server". www.wis-tns.org. Retrieved 2024-05-06.
  8. ^ a b Li, W. D.; Filippenko, A. V.; Chornock, R.; Foley, R. J. (2002-06-01). "Supernova 2002dn in IC 5145". International Astronomical Union Circular (7922): 1. Bibcode:2002IAUC.7922....1L. ISSN 0081-0304.
  9. ^ "SN 2002dn". w.astro.berkeley.edu. Retrieved 2024-05-06.
  10. ^ a b c "SN 2003hy | Transient Name Server". www.wis-tns.org. Retrieved 2024-05-06.
  11. ^ a b Boles, T.; Armstrong, M. (2003-09-01). "Supernova 2003hy in IC 5145". International Astronomical Union Circular (8200): 1. Bibcode:2003IAUC.8200....1B. ISSN 0081-0304.
  12. ^ "Bright Supernovae - 2003". www.rochesterastronomy.org. Retrieved 2024-05-06.
  13. ^ "SN 2003hy in IC 5145". www.kopernik.org. Retrieved 2024-05-06.
  14. ^ a b c [email protected]. "Bright Supernovae - 2010". www.rochesterastronomy.org. Retrieved 2024-05-06.
  15. ^ Narla, A.; Cenko, S. B.; Li, W.; Filippenko, A. V. (2010-10-01). "Supernova 2010iq in IC 5145". Central Bureau Electronic Telegrams. 2493: 1. Bibcode:2010CBET.2493....1N.
  16. ^ a b "Bright Supernovae - 2014". www.rochesterastronomy.org. Retrieved 2024-05-06.
  17. ^ "SN 2020pkj". Transient Name Server. IAU. Retrieved 16 August 2024.
  18. ^ "SN 2022lfa | Transient Name Server". www.wis-tns.org. Retrieved 2024-05-06.
  19. ^ "Discovery certificate for object 2022lfa | Transient Name Server". www.wis-tns.org. Retrieved 2024-05-06.
  20. ^ "Classification certificate for object 2022lfa | Transient Name Server". www.wis-tns.org. Retrieved 2024-05-06.

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