NGC 2787
| NGC 2787 | |
|---|---|
|
NGC 2787 as observed by the Hubble Space Telescope (HST). | |
| Observation data (J2000 epoch) | |
| Constellation | Ursa Major |
| Right ascension | 09h 19m 18.5s[1] |
| Declination | +69° 12′ 12″[1] |
| Redshift | 696 ± 8 km/s[1] |
| Distance | 24 ± 4 Mly (7.5 ± 1.2 Mpc)[2] |
| Type | SB(r)0+[1] |
| Apparent dimensions (V) | 3′.2 × 2′.0[1] |
| Apparent magnitude (V) | 11.8[1] |
| Notable features | barred galaxy |
| Other designations | |
| UGC 4914,[1] PGC 26341[1] | |
NGC 2787 is a barred lenticular galaxy approximately 24 million light-years away in the constellation Ursa Major. In 1999, the Hubble Space Telescope took a look at NGC 2787.
LINER emission
NGC 2787 contains a low-ionization nuclear emission-line region (LINER), a type of region that is characterized by spectral line emission from weakly ionized atoms.[3] LINERs are very common within lenticular galaxies, approximately one-fifth of nearby lenticular galaxies contain LINERs.[4]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 "NASA/IPAC Extragalactic Database". Results for NGC 2787. Retrieved 2006-12-13.
- ↑ J. L. Tonry; A. Dressler; J. P. Blakeslee; E. A. Ajhar et al. (2001). "The SBF Survey of Galaxy Distances. IV. SBF Magnitudes, Colors, and Distances". Astrophysical Journal 546 (2): 681–693. arXiv:astro-ph/0011223. Bibcode:2001ApJ...546..681T. doi:10.1086/318301.
- ↑ L. C. Ho; A. V. Filippenko; W. L. W. Sargent (1997). "A Search for "Dwarf" Seyfert Nuclei. III. Spectroscopic Parameters and Properties of the Host Galaxies". Astrophysical Journal Supplement 112 (2): 315–390. arXiv:astro-ph/9704107. Bibcode:1997ApJS..112..315H. doi:10.1086/313041.
- ↑ L. C. Ho; A. V. Filippenko; W. L. W. Sargent (1997). "A Search for "Dwarf" Seyfert Nuclei. V. Demographics of Nuclear Activity in Nearby Galaxies". Astrophysical Journal 487 (2): 568–578. arXiv:astro-ph/9704108. Bibcode:1997ApJ...487..568H. doi:10.1086/304638.