NGC 777

NGC 777
NGC 777
Observation data (J2000 epoch)
ConstellationTriangulum
Right ascension2h 00m 14.907s
Declination31° 25′ 46″
Redshift0.016708
Heliocentric radial velocity5,015 km/s
Distance189 million ly (58.075 mpc)
Apparent magnitude (V)12
Characteristics
TypeE1
Apparent size (V)2.5' x 2.0'
Other designations
CGCG 503-67, MCG 5-5-38, PGC 7584, UGC 1476

NGC 777 is an elliptical galaxy in the constellation of Triangulum. It was discovered by William Herschel on September 12, 1784. It has a weak active nucleus of type Seyfert 2 or LINER 2, implying that the central region is obscured. When observed in radio waves the galaxy has a bright nucleus from which emerge small two radio jets about 18 kpc across. The jets are of Fanaroff–Riley class I. It may be an outlying member of galaxy cluster Abell 262.

References

  1. 1 2 3 "NGC 777". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2016-11-26.
  2. 1 2 "Results for Object NGC 0777". NASA/IPAC Extragalactic Database. Archived from the original on 2016-11-27. Retrieved 2016-11-26.
  3. 1 2 3 "New General Catalog Objects: NGC 750 - 799". Cseligman. Retrieved 2016-11-26.
  4. ↑ Ho, Luis C.; Filippenko, Alexei V.; Sargent, Wallace L. W. (1997). "A Search for "Dwarf" Seyfert Nuclei. III. Spectroscopic Parameters and Properties of the Host Galaxies". The Astrophysical Journal Supplement Series. 112 (2): 315–390. arXiv:astro-ph/9704107. Bibcode:1997ApJS..112..315H. doi:10.1086/313041. S2CID 17086638.
  5. ↑ Capetti, A.; Brienza, M.; Balmaverde, B.; Best, P. N.; Baldi, R. D.; Drabent, A.; Gürkan, G.; Rottgering, H. J. A.; Tasse, C.; Webster, B. (April 2022). "The LOFAR view of giant, early-type galaxies: Radio emission from active nuclei and star formation". Astronomy & Astrophysics. 660: A93. arXiv:2202.08593. Bibcode:2022A&A...660A..93C. doi:10.1051/0004-6361/202142911.
  6. ↑ Faber, S. M.; et al. (Seven Samurai) (1989). "Spectroscopy and Photometry of Elliptical Galaxies. VI. Sample Selection and Data Summary". The Astrophysical Journal Supplement Series. 69: 763–808. Bibcode:1989ApJS...69..763F. doi:10.1086/191327.