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  • and Late (SBc). Examples are Sa - NGC 4594, Sb - NGC 2841, Sc - NGC 5457, SBa - NGC 2859, SBb - NGC 3351, and SBc - NGC 7479. Def. a "galaxy having a number...
    38 KB (4,679 words) - 04:18, 18 December 2019
  • "Irr". Examples are Sa - NGC 4594, Sb - NGC 2841, Sc - NGC 5457, SBa - NGC 2859, SBb - NGC 3351, SBc - NGC 7479, and Irr - NGC 4449. Def. a galaxy having...
    87 KB (10,427 words) - 14:50, 26 January 2023
  • evocative constellation of Delphinus (the Dolphin) is the globular cluster NGC 6934. Globular clusters are large balls of (typically) a few hundred thousand...
    18 KB (2,121 words) - 22:51, 29 April 2020
  • variable stars in NGC 4414, [...] an accurate determination of the distance to the galaxy [was made]." "The resulting distance to NGC 4414, 19.1 megaparsecs...
    204 KB (23,304 words) - 11:29, 6 June 2023
  • group members, ordered by luminosity, are: spiral NGC 1566, lenticular NGC 1553, and elliptical NGC 1549 The group spans an ... 16 KB (2,088 words) -...
    88 KB (12,828 words) - 05:48, 10 April 2022
  • detected in absorption towards NGC 6334I, and the 111 − 000 transition of para-H235Cl+ is detected in absorption towards NGC 6334I and Sgr B2(S)." "[T]he...
    70 KB (8,918 words) - 05:09, 30 June 2022
  • 1998, ch. 2.3.2, pp. 53 H. M. Johnson & D. E. Hogg (October 1965). "NGC 2359, NGC 6888, and Wolf-Rayet Stars". The Astrophysical Journal 142 (10): 1033-40...
    98 KB (11,505 words) - 05:11, 6 December 2020
  • white, and 7,500-10,000 K to white, or white to blue white (apparent color). NGC 5548 is a Type I Seyfert galaxy with a bright blue/white core. It is in the...
    85 KB (10,704 words) - 04:11, 5 December 2020
  • edu/full/1960BAICz..11..228P. Retrieved 2013-12-07.  W. L. Elkin (January 1899). "Photographic observations of the Leonids at the Yale Observatory". The...
    94 KB (10,032 words) - 16:43, 2 July 2023
  • the heavens. Edward Pickering discovered the first spectroscopic binary in 1899 when he observed the periodic splitting of the spectral lines of the star...
    82 KB (9,515 words) - 16:42, 8 January 2023