| Markarian 876 | |
|---|---|
 HST image of Markarian 876. | |
| Observation data (J2000.0epoch) | |
| Constellation | Draco |
| Right ascension | 16h 13m 57.17s |
| Declination | +65° 43′ 09.98″ |
| Redshift | 0.121090 |
| Heliocentric radial velocity | 36,302km/s |
| Distance | 1.752Gly (537.16Mpc) |
| Apparent magnitude (V) | 15.49 |
| Apparent magnitude (B) | 16.03 |
| Characteristics | |
| Type | E2, Sy1 |
| Size | 117.72 kiloparsecs (384,000 light-years) (diameter;2MASS K-band total isophote)[1] |
| Other designations | |
| PGC 57553, PG 1613+658,IRAS 16136+6550, RBS 1567, 2E 3624,2MASX J16135722+6543096 | |
Markarian 876 (Mrk 876) known asPG 1613+658, is anelliptical galaxy located in the constellation ofDraco. With avelocity relative to thecosmic microwave background of 36,302 ± 60kilometers per seconds, the galaxy is located 1.75 billionlight years fromEarth. It is aSeyfert galaxy.[1]
Markarian 876 is classified as a large galaxy with a distorted morphology. It hastidal tails extending out from the galaxy by more than 50arcsecs or 85kiloparsecs (kpc). The structure of the galaxy appears lopsided and complicated with a secondary nucleus or knot oflight located 1.6 arcsec west of the main nucleus.[2] Abarred spiral galaxy companion is found lying at the sameredshift, indicating the peculiar structure in Markarian 876 might be directly caused by a stronggravitational interaction with the object.[3] However the companion galaxy is located 23 arcsecs north and doesn't seem to tidally connect with Markarian 876, therefore the latter's distorted morphology is likely caused by agalaxy merger.[2]
The mass of theblack hole in the center of Markarian 876 is estimated to be (2.2 ± 1.0) x 108Mʘ based on an opticalreverberation campaign.[4]
Anemission line is found connected with the source of the galaxy with arest-frameenergy of 4.80+0.05-0.04keV.[5]
