NGC 1600
| Galaxy data from NGC 1600 |
|
|---|---|
|
|
| Photo from the Hubble Space Telescope | |
| AladinLite | |
| Constellation | Eridanus |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 04 h 31 m 39.9 s |
| declination | -05 ° 05 ′ 10 ″ |
| Appearance | |
| Morphological type | E3 |
| Brightness (visual) | 11.0 mag |
| Brightness (B-band) | 12.0 mag |
| Angular expansion | 2.5 ′ × 1.7 ′ |
| Position angle | 15 ° |
| Surface brightness | 12.6 mag / arcmin² |
| Physical data | |
| Redshift | 0.015614 +/- 0.000027 |
| Radial velocity | 4681 +/- 8 km / s |
|
Stroke distance v rad / H 0 |
(205 ± 14) · 10 6 ly (63.0 ± 4.4) Mpc |
| history | |
| discovery | William Herschel |
| Discovery date | November 26, 1786 |
| Catalog names | |
| NGC 1600 • PGC 15406 • MCG -01-12-17 • 2MASX J04313985-0505099 • GC 866 • H I 158 • h 319 • LDCE 0312 NED011 | |
NGC 1600 is an elliptical galaxy of Hubble type E3 in the constellation Eridanus at the southern sky, the 205 million estimated light years from the Milky Way 's center. The galaxy has an apparent magnitude of 11.0 and is known to be a powerful source of X-rays .
The object was discovered by Wilhelm Herschel on November 26, 1786 .
Although NGC 1600 is often classified as a member of a loose group of galaxies , scientists believe it could be satellite galaxies from NGC 1600 because all neighboring galaxies are much fainter and the number decreases with distance to NGC 1600. The approximately 30 known galaxies that are at a distance of up to 1 MPc and have a similar redshift include NGC 1601 , NGC 1603 , NGC 1604 , NGC 1606 , NGC 1580 , NGC 1594 , NGC 1599 , NGC 1607 , NGC 1611 and IC 373 .
The center of the relatively isolated galaxy contains a black hole with a mass 17 billion times larger than that of our sun . This is one of the largest black holes found to date. For comparison: the central black hole of the Milky Way has around 4 million solar masses. In addition, the center of the galaxy is very poor in stars, which could indicate that two galaxies - and their black holes - once merged here and many stars were ejected from the center.
Web links
- astronews.com: Huge black hole in isolated galaxy April 8, 2016
Individual evidence
- ↑ a b c d NASA / IPAC EXTRAGALACTIC DATABASE
- ↑ a b c d e SEDS : NGC 1600
- ↑ Seligman
- ↑ Rodney M. Smith, Vicent J. Martínez, Alberto Fernández ‐ Soto, Fernando J. Ballesteros, Amelia Ortiz ‐ Gil: NGC 1600: Cluster or Field Elliptical ?. In: The Astrophysical Journal. 679, 2008, p. 420, doi : 10.1086 / 587454 .
- ↑ heise.de: Astronomers find a supermassive black hole in an unexpected location , accessed on April 7, 2016
- ^ M. Matthias, O. Gerhard: Dynamics of the boxy elliptical galaxy NGC 1600. In: Monthly Notices of the Royal Astronomical Society. 310, 1999, p. 879, doi : 10.1046 / j.1365-8711.1999.03022.x .