J1000+1242
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| J1000+1242 | |
|---|---|
 J1000+1242 taken with SDSS | |
| Observation data (J2000.0 epoch) | |
| Constellation | Leo |
| Right ascension | 10h 00m 13.14s |
| Declination | +12° 42′ 26.42″ |
| Redshift | 0.148195 |
| Heliocentric radial velocity | 44,428 km/s |
| Distance | 2.007 Gly (615.34 Mpc) |
| Apparent magnitude (V) | 18.34 |
| Apparent magnitude (B) | 19.03 |
| Characteristics | |
| Type | QSO2, S1 |
| Size | 74.71 kiloparsecs (243,700 light-years) (diameter; 2MASS K-band total isophote)[1] |
| Other designations | |
| LEDA 1414663, SDSS J100013.14+124226.1, IRAS F09575+1256, NVSS J100013+124226, SDSS J1000+1242, 2MASX J10001317+1242261 | |
J1000+1242 known as SDSS J1000+1242 or J1000+12 is a radio-quiet type-2 quasar,[2] located in the constellation Leo. It is located 2 billion light years from Earth and is classified as a Seyfert galaxy.[1]
J1000+1242 has disturbed morphology indicating a galaxy merger. A tidal tail is clearly seen elongating away from the host galaxy towards south by 72 kiloparsecs (kpc), terminating at a location of a small source which implies a tidal dwarf galaxy.[3]
Two unique nuclear emission sources are located in the galaxy. They have a projected separation of around 1.5 kpc indicating the merger resulted J1000+1242 having two active galactic nuclei (AGN) or from both sides of its narrow-line region concealed by a torus of gas and warm dust, or a circumnuclear ring.[4] A bright emission line region is also found northeast of the nucleus of J1000+1242, with an irregular morphology indicating an outflowing bi-polar superbubble.[5]
J1000+1242 has features of a typical AGN. This includes a radio core and hotspot.[6] There is a presence of a deflected radio jet producing diffused lobes in both southeast and northwest directions.[7] Not to mention, J1000+1242 has broad line regions producing emission lines with widths reaching to w80 of 850 km s−1.[8] In both around and inside its radio lobes measuring ~ 10 kpc, J1000+1242 has five filamentary molecular gas structures. They seem to wrap around the radio lobes, which ~ 9 percent of the total molecular gas mass is found enclosed within these structures.[2]
Star formation
J1000+1242 has an estimated star formation rate of 50 ± 10 M☉ yr−1 with infrared luminosity deriving from its star formation in an 8-1000 ɥm range, of 45.0+0.1-0.2 erg s−1.[9]
