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NGC 7319
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NGC 7319
NGC 7319 is a highly distorted barred spiral galaxy that is a member of the compact Stephan's Quintet group located in the constellation Pegasus, some 311 megalight-years distant from the Milky Way. It was discovered on 27 September 1873 by French astronomer Édouard Stephan.
The galaxy's arms, dust and gas have been highly disturbed as a result of the interaction with the other members of the Quintet. Nearly all of the neutral hydrogen has been stripped from this galaxy, most likely as a result of a collision with NGC 7320c some 100 million years ago. A pair of long, parallel tidal tails extend southward from NGC 7319 in the direction of NGC 7320c, and is undergoing star formation.
This is a type 2 Seyfert galaxy with one of the largest circumnuclear outflows known in galaxies of this type. This outflow reaches velocities of up to 500 km/s and spans 13 kly. The star formation rate appears normal for a spiral galaxy at 1.98±0.58 M☉ yr−1, and the majority (68%) is occurring in the spiral arms. The core appears faint in the ultraviolet band, indicating heavy extinction within the active galactic nucleus. There is a three component radio source with an overall size of 5.5 kly that is straddling the nucleus. A strong X-ray source with a high redshift has been detected at a separation of 8″ from the galactic nucleus, a quasi-stellar object.
One supernova has been observed in NGC 7319: SN 1971P (type unknown, mag. 16.8) was discovered by Leonida Rosino on 19 August 1971.
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NGC 7319
NGC 7319 is a highly distorted barred spiral galaxy that is a member of the compact Stephan's Quintet group located in the constellation Pegasus, some 311 megalight-years distant from the Milky Way. It was discovered on 27 September 1873 by French astronomer Édouard Stephan.
The galaxy's arms, dust and gas have been highly disturbed as a result of the interaction with the other members of the Quintet. Nearly all of the neutral hydrogen has been stripped from this galaxy, most likely as a result of a collision with NGC 7320c some 100 million years ago. A pair of long, parallel tidal tails extend southward from NGC 7319 in the direction of NGC 7320c, and is undergoing star formation.
This is a type 2 Seyfert galaxy with one of the largest circumnuclear outflows known in galaxies of this type. This outflow reaches velocities of up to 500 km/s and spans 13 kly. The star formation rate appears normal for a spiral galaxy at 1.98±0.58 M☉ yr−1, and the majority (68%) is occurring in the spiral arms. The core appears faint in the ultraviolet band, indicating heavy extinction within the active galactic nucleus. There is a three component radio source with an overall size of 5.5 kly that is straddling the nucleus. A strong X-ray source with a high redshift has been detected at a separation of 8″ from the galactic nucleus, a quasi-stellar object.
One supernova has been observed in NGC 7319: SN 1971P (type unknown, mag. 16.8) was discovered by Leonida Rosino on 19 August 1971.
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