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NGC 3177

From Wikipedia, the free encyclopedia

NGC 3177
NGC 3177, as imaged by the Hubble Space Telescope
Observation data (J2000 epoch)
ConstellationLeo
Right ascension10h 16m 33s
Declination+21° 07’ 23”
Apparent magnitude (V)11.6[1]
Apparent magnitude (B)12.8
Surface brightness22.34 mag/arcsec^2
Characteristics
TypeSA(rs)b [1]
Apparent size (V)1.6′ × 1.3′[1]
Other designations
UGC 05544, MRK 9018, CGCG 123-032, MCG +04-24-023, IRAS 10138+2122, PGC 030010

NGC 3177 is a spiral galaxy located in the constellation Leo. Its speed relative to the cosmic microwave background is 1,627 ± 22 km/s, which corresponds to a Hubble distance of 24.0 ± 1.7 Mpc (∼78.3 million ly).[2] NGC 3177 was discovered by the German-British astronomer William Herschel in 1784.[3]

The luminosity class of NGC 3177 is II and it has a broad HI line. It also contains regions of ionized hydrogen.[2] According to the SIMBAD database, NGC 3177 has an active galactic nucleus.[4]

To date, nine non-redshift measurements yield a distance of 27.722 ± 4.581 Mpc (∼90.4 million ly), which is within the distance values of Hubble.[1]

Supernovae

The supernova SN 1947A was discovered in NGC 3177 on March 5, 1947, by Edwin Hubble. The type of this supernova has not been determined.[5]

NGC 3227 group

NGC 3177 is part of the NGC 3227 group. In addition to NGC 3177 and NGC 3227, this group includes at least 16 other galaxies including NGC 3162, NGC 3185, NGC 3187, NGC 3190, NGC 3193, NGC 3213, NGC 3226, NGC 3227, NGC 3287 and NGC 3301.[6]

See also

References

  1. ^ a b c d "NED Query Results for NGC 3177". ned.ipac.caltech.edu. Retrieved 2024-07-22.
  2. ^ a b "By Name | NASA/IPAC Extragalactic Database". ned.ipac.caltech.edu. Retrieved 2024-07-22.
  3. ^ "New General Catalog Objects: NGC 3150 - 3199". cseligman.com. Retrieved 2024-07-22.
  4. ^ "NGC 3177". simbad.u-strasbg.fr. Retrieved 2024-07-22.
  5. ^ "Other Supernovae images". rochesterastronomy.org. Retrieved 2024-07-22.
  6. ^ Garcia, A. M. (1993-07-01). "General study of group membership. II. Determination of nearby groups". Astronomy and Astrophysics Supplement Series. 100: 47–90. ISSN 0365-0138.
This page was last edited on 24 July 2024, at 20:57
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