IC 758

IC 758
A spiral galaxy with a generally soft and slightly faint appearance. It glows most brightly around the pale yellow bar across its centre. It has two spiral arms which wrap around the centre, quickly broadening out to join a wide, faint circular halo around the galaxy. Glowing, sparkling patches in the disc show stars forming in nebulae. Behind the galaxy, distant galaxies appear as orange dots on a black background.
IC 758 imaged by the Hubble Space Telescope
Observation data (J2000 epoch)
ConstellationUrsa Major
Right ascension12h 04m 11.9363s[1]
Declination+62° 30′ 19.199″[1]
Redshift0.004256±0.000006[1]
Heliocentric radial velocity1,276±2 km/s[1]
Distance87.08 ± 11.09 Mly (26.700 ± 3.400 Mpc)[1]
Group or clusterNGC 4036 Group (LGG 266)
Apparent magnitude (V)14.2[1]
Characteristics
TypeSB(rs)cd:[1]
Size~50,700 ly (15.53 kpc) (estimated)[1]
Apparent size (V)1.65′ × 1.15′[1]
Other designations
IRAS F12017+6246, UGC 7056, MCG +11-15-014, PGC 38173, CGCG 315-009[1]

IC 758 is a barred spiral galaxy in the constellation of Ursa Major. Its velocity with respect to the cosmic microwave background is 1,402±9 km/s, which corresponds to a Hubble distance of 67.4 ± 4.7 Mly (20.67 ± 1.45 Mpc).[1] However, two non-redshift measurements give a much farther distance of 87.08 ± 11.09 Mly (26.700 ± 3.400 Mpc).[2] It was discovered by American astronomer Lewis Swift on 17 April 1888.[3][4]

IC 758 is an active galactic nucleus candidate, 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.[5][6]

NGC 4036 Group

According to A.M. Garcia, IC 758 is one of five members of the NGC 4036 galaxy group (also known as LGG 266), which includes NGC 4036, NGC 4041, UGC 7009 [d], and UGC 7019 [d].[7][8] A more recent study claims this group has 13 members, adding the galaxies NGC 3945, PGC 37567, PGC 38027, PGC 2608163, PGC 4001456, PGC 4001735, PGC 4011191, and PGC 4074702.[9] The NGC 4036 Group is part of the Ursa Major Cloud, which is part of the Virgo Supercluster.[10]

Supernova

One supernova has been observed in IC 758: SN 1999bg (Type II, mag. 15.5) was discovered by the Lick Observatory Supernova Search (LOSS) on 28 March 1999.[11][12]

See also

References

  1. ^ a b c d e f g h i j k "Results for object IC 0758". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 25 May 2025.
  2. ^ "Distance Results for IC 758". NASA/IPAC EXTRAGALACTIC DATABASE. NASA. Retrieved 25 May 2025.
  3. ^ Seligman, Courtney. "Index Catalogue Objects: IC 758". Celestial Atlas. Retrieved 25 May 2025.
  4. ^ Swift, Lewis (1889). "Catalogue No. 7 of Nebulae discovered at the Warner Observatory". Astronomische Nachrichten. 120 (3): 33–38. Bibcode:1888AN....120...33S. doi:10.1002/asna.18891200302.
  5. ^ Asmus, D.; Greenwell, C. L.; Gandhi, P.; Boorman, P. G.; Aird, J.; Alexander, D. M.; Assef, R. J.; Baldi, R. D.; Davies, R. I.; Hönig, S. F.; Ricci, C.; Rosario, D. J.; Salvato, M.; Shankar, F.; Stern, D. (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. arXiv:2003.05959. Bibcode:2020MNRAS.494.1784A. doi:10.1093/mnras/staa766.
  6. ^ "IC 758". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 17 December 2024.
  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 266". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 10 March 2026.
  9. ^ Kourkchi, Ehsan; Tully, R. Brent (2017). "Galaxy Groups within 3500 km s-1". The Astrophysical Journal. 843 (1): 16. arXiv:1705.08068. Bibcode:2017ApJ...843...16K. doi:10.3847/1538-4357/aa76db.
  10. ^ Tully, R. Brent (1988). Nearby galaxies catalog (1. publ ed.). Cambridge: Cambridge University Press. ISBN 978-0-521-35299-4.
  11. ^ "SN 1999bg". Transient Name Server. IAU. Retrieved 25 May 2025.
  12. ^ Li, W. (1999). "Supernova 1999bg in IC 758". International Astronomical Union Circular (7135): 1. Bibcode:1999IAUC.7135....1L.
  • Wikimedia Commons logo Media related to IC 758 at Wikimedia Commons
  • IC 758 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images

Content Disclaimer

Informasi ini disarikan dari Wikipedia dan disajikan kembali untuk tujuan edukasi. Konten tersedia di bawah lisensi CC BY-SA 3.0. Kami tidak bertanggung jawab atas ketidakakuratan data yang bersumber dari kontribusi publik tersebut.

  1. The information displayed on this website is sourced in part or in whole from Wikipedia and has been adapted for the purpose of restating it. We strive to provide accurate and relevant information, however:
  2. There is no guarantee of absolute accuracy. Wikipedia is an open, collaborative project that can be edited by anyone, so information is subject to change.
  3. It is not intended to constitute professional advice. The content displayed is for informational and educational purposes only. For important decisions (e.g., medical, legal, or financial), please consult a professional.
  4. Content copyright. Wikipedia is licensed under the Creative Commons Attribution-ShareAlike License (CC BY-SA). This means that content may be reused with appropriate attribution and shared under a similar license.
  5. Responsible use. Any risk arising from the use of information from this website is entirely the responsibility of the user.