Astronomy:NGC 4145
From HandWiki
Short description: Galaxy in constellation Canes Venatici
| NGC 4145 | |
|---|---|
 Spitzer Space Telescope image of NGC 4145 | |
| Observation data (J2000[1] epoch) | |
| Constellation | Canes Venatici[2] |
| Right ascension | 12h 10m 01.52s[1] |
| Declination | 39° 53′ 01.9″[1] |
| Redshift | 0.003366[1] |
| Distance | 68,000,000 light years[2] |
| Apparent magnitude (V) | 11.30[3] |
| Characteristics | |
| Type | SAB(rs)d[1] |
| Apparent size (V) | 5.9' x 4.1'[3] |
| Other designations | |
| UGC 7154, PGC 38693[3] | |
NGC 4145 is a barred spiral galaxy located in the Ursa Major galaxy cluster, 68 million light years from the Earth. The galaxy has little star formation, except on its outer edges. Due to the loss of energy that occurs without star formation, some astronomers predict that the galaxy will degenerate into a lenticular galaxy in the near future. However, the galaxy's interaction with NGC 4151 may "maintain [its] star formation".[2][4]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 "NED results for object NGC 4145". http://ned.ipac.caltech.edu/cgi-bin/objsearch?objname=NGC+4145&extend=no&hconst=73&omegam=0.27&omegav=0.73&corr_z=1&out_csys=Equatorial&out_equinox=J2000.0&obj_sort=RA+or+Longitude&of=pre_text&zv_breaker=30000.0&list_limit=5&img_stamp=YES#Positions_0.
- ↑ 2.0 2.1 2.2 "Barred Spiral Galaxy NGC 4145". http://www.spitzer.caltech.edu/images/2707-ssc2009-15a2-Barred-Spiral-Galaxy-NGC-4145.
- ↑ 3.0 3.1 3.2 "NGC 4145". http://dso-browser.com/dso/info/NGC/4145.
- ↑ "NGC 4145". https://www.noao.edu/outreach/nop/advanced/observers/n4145.html.
External links
 |  |
