Markarian 709
| Mrk 709 | |
|---|---|
 |
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| 2MASS image (former JHK composite, incorrectly converted to grayscale) | |
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Observation dates equinox : J2000.0 |
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| Constellation | lion |
| Right ascension | 09 h 49 m 18 s |
| declination | + 16 ° 52.7 ′ 0 ″ |
| Physical data | |
| Redshift | approx. 0.052 |
| distance | approx. 210 M pc approx. 700 M ly |
| Designations and catalog entries | |
| PGC 28237 • IRAS F09466 + 1706 • 2MASX J09491806 + 1652448 | |
Mrk 709 ( Markarian 709 ) is a pair of two low- metallicity dwarf galaxies that are believed to interact with each other. Due to the redshift of this system consisting of the components Mrk 709 S and Mrk 709 N of z = 0.052, a distance of around 200 million parsecs (around 700 million light years) can be assumed. In Mrk 709 S, Reines et al. Evidence of an active supermassive black hole found; they estimated the stellar masses of the galaxies to be around 2.5 billion solar masses for Mrk 709 S and 1.1 billion solar masses for Mrk 709 N. With 10% of solar metallicity, Mrk 709 is one of the most metal-poor galaxies showing signs of an active galaxy core.
swell
- Reines et al .: A candidate massive black hole in the low-metallicity dwarf galaxy pair Mrk 709 ; The Astrophysical Journal Letters 787 (2), 2014, bibcode : 2014ApJ ... 787L..30R