DDO 169 (also known as UGC 8331) is an irregular galaxy located in the constellation Canes Venatici. It is a member of the M51 Group of galaxies and measures approximately 5 × 1.5 kiloparsecs (16,000 × 5,000 lightyears).[1] The galaxy's large-scale structure is very unorganized and it has two clusters of stars in its outer portions in addition to the cluster in the center.[3] These clusters make it practically impossible to determine the galaxy's rotation curve and contributes to a large variation in distance figures that are derived with different methods.[1][3] The exact distance to the galaxy is not known, although a 1998 paper estimated the distance as 8.23 megaparsecs.[2]
^ abc"NED results for UGC 8331". NED via University of California. Retrieved 2009-03-08.
^ abI.D. Karachentsev; I.O. Drovdozsky (July 1998). "Distances to five resolved galaxies in the Canes Venatici cloud" (PDF). Astronomy and Astrophysics Supplement Series. Retrieved 2009-03-08.[permanent dead link]
^ abR.A. Swaters; R. Sancisi; T.S. van Albada; J.M. van der Hulst (2009-01-27). "The rotation curves shapes of late-type dwarf galaxies". Astronomy and Astrophysics. 493 (3): 871–892. arXiv:0901.4222. Bibcode:2009A&A...493..871S. doi:10.1051/0004-6361:200810516. S2CID 14143255.
January 20, 2023
also, known, 8331, irregular, galaxy, located, constellation, canes, venatici, member, group, galaxies, measures, approximately, kiloparsecs, lightyears, galaxy, large, scale, structure, very, unorganized, clusters, stars, outer, portions, addition, cluster, c. DDO 169 also known as UGC 8331 is an irregular galaxy located in the constellation Canes Venatici It is a member of the M51 Group of galaxies and measures approximately 5 1 5 kiloparsecs 16 000 5 000 lightyears 1 The galaxy s large scale structure is very unorganized and it has two clusters of stars in its outer portions in addition to the cluster in the center 3 These clusters make it practically impossible to determine the galaxy s rotation curve and contributes to a large variation in distance figures that are derived with different methods 1 3 The exact distance to the galaxy is not known although a 1998 paper estimated the distance as 8 23 megaparsecs 2 DDO 169DDO 169Observation data J2000 epoch ConstellationCanes VenaticiRight ascension13h 15m 30 31sDeclination 47 29 56 2 Redshift 260 km sDistance6 03 8 23 Mpc 1 2 19 7 26 8 million ly Apparent magnitude V 14 61CharacteristicsTypeIAmApparent size V 2 7 0 9 Other designationsUGC 8331 PGC 46127References Edit a b c NED results for UGC 8331 NED via University of California Retrieved 2009 03 08 a b I D Karachentsev I O Drovdozsky July 1998 Distances to five resolved galaxies in the Canes Venatici cloud PDF Astronomy and Astrophysics Supplement Series Retrieved 2009 03 08 permanent dead link a b R A Swaters R Sancisi T S van Albada J M van der Hulst 2009 01 27 The rotation curves shapes of late type dwarf galaxies Astronomy and Astrophysics 493 3 871 892 arXiv 0901 4222 Bibcode 2009A amp A 493 871S doi 10 1051 0004 6361 200810516 S2CID 14143255 Retrieved from https en wikipedia org w index php title DDO 169 amp oldid 1013382417, wikipedia, wiki, book, books, library,
