NGC 4418
| Galaxy NGC 4418 |
|
|---|---|
|
|
| SDSS recording | |
| AladinLite | |
| Constellation | Virgin |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 12 h 26 m 54.6 s |
| declination | -00 ° 52 ′ 39 ″ |
| Appearance | |
| Morphological type | (R ') SAB (s) a / LIRG / Sy2 |
| Brightness (visual) | 13.2 mag |
| Brightness (B-band) | 14.1 mag |
| Angular expansion | 1.5 ′ × 0.7 ′ |
| Position angle | 59 ° |
| Surface brightness | 13.1 mag / arcmin² |
| Physical data | |
| Redshift | 0.007268 ± 0.000027 |
| Radial velocity | 2179 ± 8 km / s |
|
Stroke distance v rad / H 0 |
(93 ± 7) · 10 6 ly (28.5 ± 2.0) Mpc |
| history | |
| discovery | Wilhelm Herschel |
| Discovery date | January 1, 1786 |
| Catalog names | |
| NGC 4418 • 4355 • UGC 7545 • PGC 40762 • CGCG 014-039 • MCG + 00-32-12 • IRAS 12243-0036 • 2MASX J12265462-0052395 • GC 2976 • H III 492 • h 1261 • KCPG 337A • Todd 17 • LDCE 895 NED003 • EVCC 631 | |
NGC 4418 = NGC 4355 is an active , spiraling infrared galaxy of the Hubble type Sbc in the constellation Virgo on the ecliptic . It is estimated to be 93 million light years from the Milky Way and about 40,000 light years in diameter.
The object was discovered by Wilhelm Herschel on January 1, 1786 .
Under the name NGC 4355 it was mistakenly classified as a new discovery by David Peck Todd on February 5, 1878 while searching for the trans-Neptunian planet.
Web links
- SIMBAD Astronomical Database
- Near-Infrared and Millimeter Constraints on the Nuclear Energy Source of the Infrared-luminous Galaxy NGC 4418 . In: The Astronomical Journal . November 2004, doi : 10.1086 / 424620 .
- bibcode : 1993MNRAS.265..486R
- S. Aalto, R. Monje, S. Martín: Luminous HC3N line emission in NGC4418 - buried AGN or nascent starburst? In: Astronomy and Astrophysics . tape 475 , no. 2 , November 1, 2007, pp. 479-485 , doi : 10.1051 / 0004-6361: 20077366 , arxiv : 0705.2947v1 .
- S. Aalto, M. Spaans, MC Wiedner, S. Huttemeister : Overluminous HNC Line Emission in Arp220, NGC4418 and Mrk231 - Global IR Pumping or XDRs? In: Astronomy and Astrophysics . tape 464 , no. 1 , December 5, 2006, p. 193-200 , doi : 10.1051 / 0004-6361: 20066473 , arxiv : astro-ph / 0612122v1 .
- cfa.harvard.edu ( Memento from July 6, 2008 in the Internet Archive )
Individual evidence
- ↑ a b c d NASA / IPAC EXTRAGALACTIC DATABASE
- ↑ a b c d e f SEDS : NGC 4418
- ^ Revised NGC and IC Catalog. (TXT) Archived from the original on December 20, 2008 ; accessed on September 26, 2008 (English).
- ↑ a b Dr. Harold G. Corwin, Jr .: spider.ipac.caltech.edu. In: Infrared Processing and Analysis Center. Archived from the original on September 16, 2006 ; accessed on September 26, 2008 (English).
- ↑ Seligman