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NGC 3193

NGC 3193
NGC 3193 by Sloan Digital Sky Survey
Observation data (J2000 epoch)
ConstellationLeo
Right ascension10h 18m 24.9s[1]
Declination21° 53′ 38″[1]
Redshift0.004607 ± 0.000017 [1]
Heliocentric radial velocity1,381 ± 5 km/s[1]
Distance92 ± 27 Mly (28.3 ± 8.2 Mpc)[1]
Apparent magnitude (V)10.9
Characteristics
TypeE2 [1]
Apparent size (V)3.0′ × 2.7′[1]
Notable featuresMember of HCG 44
Other designations
UGC 5562, Arp 316, MCG +04-24-027, PGC 30099[1]

NGC 3193 is an elliptical galaxy in the constellation Leo. The galaxy lies about 90 million light years away from Earth, which means, given its apparent dimensions, that NGC 3193 is approximately 80,000 light years across.[1] It was discovered by William Herschel on March 12, 1784.[2]

HCG 44 compact group, NGC 3193 is visible to the top left

NGC 3193 lies at the north-east edge of the galaxy compact group HCG 44, which also includes the spiral galaxies NGC 3185, NGC 3187 and NGC 3190.[3] HCG 44 is considered to be part of a larger galaxy group known as LGG 194, which also includes the galaxies NGC 3162, NGC 3177, NGC 3213, NGC 3226, NGC 3227, NGC 3287, and NGC 3301.[4] It is a member of the Leo II Groups, part of the Virgo Supercluster.[5] NGC 3193 has similar radial velocity with NGC 3187 and NGC 3190, however redshift independent distances put NGC 3193 at a greater distance than the rest of the group, although these measurements have large error margins.[3]

A long tail of hydrogen has been found north of NGC 3193 and two smaller hydrogen clouds lie southeast of the galaxy.[3] A dwarf spheroidal galaxy has been detected in the halo of NGC 3193.[6]

References

  1. ^ a b c d e f g h i "NASA/IPAC Extragalactic Database". Results for NGC 3193. Retrieved 2024-03-26.
  2. ^ Seligman, Courtney. "NGC 3193 (= PGC 30099 = HCG 44B, and with NGC 3187 & 3190 = Arp 316)". Celestial Atlas. Retrieved 19 November 2018.
  3. ^ a b c Serra, Paolo; Koribalski, Bärbel; Duc, Pierre-Alain; Oosterloo, Tom; McDermid, Richard M.; Michel-Dansac, Leo; Emsellem, Eric; Cuillandre, Jean-Charles; Alatalo, Katherine; Blitz, Leo; Bois, Maxime; Bournaud, Frédéric; Bureau, Martin; Cappellari, Michele; Crocker, Alison F.; Davies, Roger L.; Davis, Timothy A.; de Zeeuw, P. T.; Khochfar, Sadegh; Krajnović, Davor; Kuntschner, Harald; Lablanche, Pierre-Yves; Morganti, Raffaella; Naab, Thorsten; Sarzi, Marc; Scott, Nicholas; Weijmans, Anne-Marie; Young, Lisa M. (1 January 2013). "Discovery of a giant H i tail in the galaxy group HCG 44". Monthly Notices of the Royal Astronomical Society. 428 (1): 370–380. arXiv:1209.4107. doi:10.1093/mnras/sts033. {{cite journal}}: |last13= has generic name (help)
  4. ^ 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.
  5. ^ "The Leo II Groups". www.atlasoftheuniverse.com. Retrieved 28 March 2024.
  6. ^ Smith Castelli, A. V.; Faifer, F. R.; Escudero, C. G. (December 2016). "Stellar systems in the direction of the Hickson Compact Group 44: I. Low surface brightness galaxies". Astronomy & Astrophysics. 596: A23. arXiv:1609.00224. Bibcode:2016A&A...596A..23S. doi:10.1051/0004-6361/201628969.
Quelle: http://en.wikipedia.org/wiki/NGC_3193