NGC 5641 is a type Sb-barred spiral galaxy[4] in the constellation of Boötes, registered in New General Catalogue (NGC).[1] It is located five degrees east of NGC 5466.[4]

Observation history

NGC 5641 was discovered by Édouard Stephan on 4 June 1880. John Louis Emil Dreyer inside the New General Catalogue, described the galaxy as "pretty bright, pretty small, a little extended, much brighter middle, mottled but not resolved?"[3] It was described in Burnham's Celestial Handbook as "pretty bright, pretty small, slightly elongated and much brighter in the middle".[5] Walter Scott Houston also noted that this galaxy was missed by William Herschel. He wrote "although NGC 5641 is only 2' long, this should not have been a problem for Herschel observing at 157x."[5]

Notes

  1. ^ Calculated from Galactocentric GSR Distance modulus[2]

References

  1. ^ a b c d e f "NGC 5641". SIMBAD. Archived from the original on 28 September 2022. Retrieved 28 September 2022.
  2. ^ a b c d e f "Results for object NGC 5641". NASA/IPAC Extragalactic Database. Archived from the original on 9 October 2022. Retrieved 15 August 2022.
  3. ^ a b Seligman, Courtney. "NGC 5641 (= PGC 51758)". Seligman website. Retrieved 2 October 2022.
  4. ^ a b Gilmour, Jess K. (2003). "Bootes". The Practical Astronomer's Deep-sky Companion. London: Springer London. p. 17. doi:10.1007/978-1-4471-0071-3_6. ISBN 978-1-85233-474-1.
  5. ^ a b "NGC 5641". Deep Sky Observer's Companion – the online database. Archived from the original on 25 March 2016. Retrieved 2 October 2022.
Allikas: https://en.wikipedia.org/wiki/NGC_5641
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