IC 4182

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IC 4182
The Irregular Spiral IC4182 (noao-02203).jpg
IC 4182 by Kitt Peak National Observatory
Observation data (J2000 epoch)
Constellation Canes Venatici
Right ascension 13h 05m 49.5s [1]
Declination +37° 36′ 18″ [1]
Redshift 0.001071 ± 0.000003 [1]
Heliocentric radial velocity 321 ± 1 km/s [1]
Distance 13.7 ± 2.6 Mly (4.2 ± 0.79 Mpc) [1]
Apparent magnitude  (V)11.4 [2]
Characteristics
Type SA(s)m [1]
Apparent size  (V)6.0′ × 5.5′ [1]
Other designations
UGC 8188, MCG +06-29-031, CGCG 189-020, IRAS F13035+3752, PGC 45314

IC 4182 is a Magellanic spiral galaxy in the constellation Canes Venatici. The galaxy lies about 14 million light years away from Earth, which means, given its apparent dimensions, that IC 4182 is approximately 30,000 light years across. [1] It was discovered by Max Wolf in 1904. [2]

IC 4182 is seen nearly face-on. It has a low surface brightness disk with patch of star formation and no spiral pattern. [3] The galaxy is close enough for its brightest stars to be resolvable through large telescopes, having a photometric blue filter apparent magnitude of 19.2, [4] and a visual magnitude of around 20 for the brightest blue stars and around 21 for the brightest red stars. [5] The density of ultraviolet sources decreases monotonically with radius. [6]

IC 4182 has been the home of one supernova, SN 1937C. On 24 August 1937, Fritz Zwicky discovered the type Ia supernova, which was located 30 arcseconds north and 40 arcseconds east of the nucleus. [2] The supernova was a few days post maximum. [4] The peak apparent magnitude was estimated to have been 8.7. [7] The galaxy was observed by the Hubble Space Telescope, leading to the discovery of Cepheid variable stars within it. SN 1937C then became the first type Ia supernova to have its distance calibrated with Cepheid stars, and then used as standard candles to calculate the Hubble constant. [8]

The galaxy is considered to be a member of the M94 Group, [9] while Garcia considered the galaxy to be a member of the LGG 334 group, along with NGC 5005 and NGC 5033. [10]

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References

  1. 1 2 3 4 5 6 7 8 "NASA/IPAC Extragalactic Database". Results for IC 4182. Retrieved 2024-03-26.
  2. 1 2 3 "IC 4182". spider.seds.org. Retrieved 10 June 2024.
  3. ↑ Eskridge, Paul B.; Frogel, Jay A.; Pogge, Richard W.; Quillen, Alice C.; Berlind, Andreas A.; Davies, Roger L.; DePoy, D. L.; Gilbert, Karoline M.; Houdashelt, Mark L.; Kuchinski, Leslie E.; Ramirez, Solange V.; Sellgren, K.; Stutz, Amelia; Terndrup, Donald M.; Tiede, Glenn P. (November 2002). "Near-Infrared and Optical Morphology of Spiral Galaxies". The Astrophysical Journal Supplement Series. 143 (1): 73–111. arXiv: astro-ph/0206320 . doi:10.1086/342340.
  4. 1 2 Baade, W.; Zwicky, F. (November 1938). "Photographic Light-Curves of the Two Supernovae in IC 4182 and NGC 1003". The Astrophysical Journal. 88: 411. doi:10.1086/143996.
  5. ↑ Sandage, Allan; Carlson, George; Kristian, Jerome; Saha, Abhijit; Labhardt, Lukas (May 1996). "The Brightest Stars in Nearby Galaxies IX: Comparison of Ground-Based and HST Phtotmetry of the Brightest Stars in IC 4182". The Astronomical Journal. 111: 1872. doi:10.1086/117925.
  6. ↑ Smith, Madison V; van Zee, L; Dale, D A; Hunter, L C; Staudaher, S; Wrock, T (4 August 2022). "A multiwavelength study of star formation in nearby galaxies: evidence for inside-out growth of the stellar disc". Monthly Notices of the Royal Astronomical Society. 515 (3): 3270–3298. doi: 10.1093/mnras/stac1974 .
  7. ↑ Schaefer, Bradley E. (May 1994). "The peak brightness of SN 1937C in IC 4182 and the Hubble constant". The Astrophysical Journal. 426: 493. doi:10.1086/174085.
  8. ↑ Saha, A.; Labhardt, Lukas; Schwengeler, Hans; Macchetto, F. D.; Panagia, N.; Sandage, Allan; Tammann, G. A. (April 1994). "Discovery of Cepheids in IC 4182: Absolute peak brightness of SN IA 1937C and the value of H[SUB]0[/SUB]". The Astrophysical Journal. 425: 14. doi:10.1086/173957.
  9. ↑ Makarov, Dmitry; Karachentsev, Igor (21 April 2011). "Galaxy groups and clouds in the local (z~ 0.01) Universe". Monthly Notices of the Royal Astronomical Society. 412 (4): 2498–2520. arXiv: 1011.6277 . Bibcode:2011MNRAS.412.2498M. doi: 10.1111/j.1365-2966.2010.18071.x . S2CID   119194025.
  10. ↑ Garcia, A. M. (1 July 1993). "General study of group membership. II. Determination of nearby groups". Astronomy and Astrophysics Supplement Series. 100: 47–90. Bibcode:1993A&AS..100...47G. ISSN   0365-0138.
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