NGC 7682

Last updated
NGC 7682
NGC 7682 hst 05479 606.png
Hubble Space Telescope (HST) image of the galaxy
Observation data (J2000 epoch)
Constellation Pisces
Right ascension 23h 29m 03.9s [1]
Declination +03° 32′ 00″ [1]
Redshift 0.017139 ± 0.000013
Heliocentric radial velocity 5,120 ± 4 km/s [1]
Distance 177 ± 5 Mly (54.2 ± 1.5 Mpc) [1]
Apparent magnitude  (V)13.3 [2]
Characteristics
Type SB(r)ab [1]
Apparent size  (V)1.2′ × 1.1′ [1]
Notable features Seyfert galaxy
Other designations
Arp 216, UGC 12622, MCG +00-59-047, PGC 71566, CGCG 380-062, VV 329b [1]

NGC 7682 is a barred spiral galaxy in the constellation Pisces. It is located at a distance of about 180 million light years from Earth, which, given its apparent dimensions, means that NGC 7682 is about 65,000 light years across. It was discovered by Heinrich d'Arrest on September 23, 1864. [3]

The galaxy has a bar and two weak spiral arms which form a ring. [4] [5] The nucleus of NGC 7682 has been found to be active and has been categorised as a type 2 Seyfert galaxy. [6] The most accepted theory for the energy source of Seyfert galaxies is the presence of an accretion disk around a supermassive black hole. The supermassive hole in the nucleus of NGC 7682 is estimated to be 17–62 million (107.56±0.33) M☉. [7] Ionised H-alpha, [N II] and [O III] gas has been detected along with [Ne V], [Si VI] and [Si VIII]. [6] Ionization cones are observed north and south of the nucleus. [5] A jet was reported to be present in H-alpha and NII imaging by W. C. Keel in 1985 [8] but further observations didn't confirm its presence. [9]

NGC 7682 forms a pair with NGC 7679. NGC 7682 lies at a distance of 269.7 arcseconds, which corresponds to a projected distance of 97 kpc. [10] The two galaxies are connected by a hydrogen bridge, a sign of a closer encounter in the past 500 million years. [11] It is possible that the interaction of the two galaxies caused star formation in NGC 7679. [12]

Related Research Articles

An active galactic nucleus (AGN) is a compact region at the center of a galaxy that emits a significant amount of energy across the electromagnetic spectrum, with characteristics indicating that this luminosity is not produced by the stars. Such excess, non-stellar emissions have been observed in the radio, microwave, infrared, optical, ultra-violet, X-ray and gamma ray wavebands. A galaxy hosting an AGN is called an active galaxy. The non-stellar radiation from an AGN is theorized to result from the accretion of matter by a supermassive black hole at the center of its host galaxy.

<span class="mw-page-title-main">NGC 4395</span> Galaxy in the constellation Canes Venatici

NGC 4395 is a nearby low surface brightness spiral galaxy located about 14 million light-years from Earth in the constellation Canes Venatici. The nucleus of NGC 4395 is active and the galaxy is classified as a Seyfert Type I known for its very low-mass supermassive black hole. It is one of the lowest

<span class="mw-page-title-main">NGC 4639</span> Galaxy in the constellation Virgo

NGC 4639 is a barred spiral galaxy located in the equatorial constellation of Virgo. It was discovered by German-born astronomer William Herschel on April 12, 1784. John L. E. Dreyer described it as "pretty bright, small, extended, mottled but not resolved, 12th magnitude star 1 arcmin to southeast". This is a relatively nearby galaxy, lying approximately 72 million light-years away from the Milky Way. It is a companion to NGC 4654, and the two appear to have interacted roughly 500 million years ago. NGC 4639 is a member of the Virgo Cluster.

<span class="mw-page-title-main">NGC 3783</span> Galaxy in the constellation Centaurus

NGC 3783 is a barred spiral galaxy located about 135 million light years away in the constellation Centaurus. It is inclined by an angle of 23° to the line of sight from the Earth along a position angle of about 163°. The morphological classification of SBa indicates a bar structure across the center (B) and tightly-wound spiral arms (a). Although not shown by this classification, observers note the galaxy has a luminous inner ring surrounding the bar structure. The bright compact nucleus is active and categorized as a Seyfert 1 type. This nucleus is a strong source of X-ray emission and undergoes variations in emission across the electromagnetic spectrum.

<span class="mw-page-title-main">NGC 5643</span> Galaxy in the constellation Lupus

NGC 5643 is an intermediate spiral galaxy in the constellation Lupus. Based on the tip of the red-giant branch distance indicator, it is located at a distance of about 40 million light-years. NGC 5643 has an active galactic nucleus and is a type II Seyfert galaxy.

<span class="mw-page-title-main">NGC 2992</span> Seyfert galaxy in the constellation Hydra

NGC 2992 is a Seyfert galaxy located 103 million light years distant in the equatorial constellation of Hydra. It was discovered in 1785 by Anglo-German astronomer William Herschel.

<span class="mw-page-title-main">NGC 708</span> Galaxy in the constellation Andromeda

NGC 708 is an elliptical galaxy located 240 million light-years away in the constellation Andromeda and was discovered by astronomer William Herschel on September 21, 1786. It is classified as a cD galaxy and is the brightest member of Abell 262. NGC 708 is a weak FR I radio galaxy and is also classified as a type 2 Seyfert galaxy.

<span class="mw-page-title-main">NGC 7469</span> Galaxy located in the constellation Pegasus

NGC 7469 is an intermediate spiral galaxy in the constellation of Pegasus. NGC 7469 is located about 200 million light-years away from Earth, which means, given its apparent dimensions, that NGC 7469 is approximately 90,000 light-years across. It was discovered by William Herschel on November 12, 1784.

<span class="mw-page-title-main">NGC 7130</span> Galaxy in the constellation Piscis Austrinus

NGC 7130 is a spiral galaxy located in the constellation Piscis Austrinus. It is located at a distance of about 220 million light years from Earth, which, given its apparent dimensions, means that NGC 7130 is about 100,000 light years across. It was discovered by John Herschel on September 25, 1834, and discovered independently by Lewis Swift on September 17, 1897. The location of the galaxy given in the New General Catalogue was off by 30 arcminutes in declination from the location of the galaxy.

<span class="mw-page-title-main">NGC 5982</span> Galaxy in the constellation Draco

NGC 5982 is an elliptical galaxy located in the constellation Draco. It is located at a distance of circa 130 million light years from Earth, which, given its apparent dimensions, means that NGC 5982 is about 100,000 light years across. It was discovered by William Herschel on May 25, 1788.

<span class="mw-page-title-main">NGC 985</span> Ring galaxy in the constellation Cetus

NGC 985 is a ring galaxy in the constellation of Cetus. It is located about 550 million light years away from Earth, which means, given its apparent dimensions, that NGC 985 is approximately 160,000 light years across. It was discovered by Francis Leavenworth in 1886. It is a type 1 Seyfert galaxy.

<span class="mw-page-title-main">NGC 1386</span> Galaxy in the constellation Eridanus

NGC 1386 is a spiral galaxy located in the constellation Eridanus. It is located at a distance of circa 53 million light years from Earth, which, given its apparent dimensions, means that NGC 1386 is about 50,000 light years across. It is a Seyfert galaxy, the only one in Fornax Cluster.

<span class="mw-page-title-main">NGC 7679</span> Galaxy in the constellation Pisces

NGC 7679 is a lenticular galaxy with a peculiar morphology in the constellation Pisces. It is located at a distance of about 200 million light years from Earth, which, given its apparent dimensions, means that NGC 7679 is about 60,000 light years across. It was discovered by Heinrich d'Arrest on September 23, 1864. The total infrared luminosity is 1011.05 L☉, and thus it is categorised as a luminous infrared galaxy. NGC 7679 is both a starburst galaxy and a Seyfert galaxy.

<span class="mw-page-title-main">NGC 2617</span> Galaxy in the constellation Hydra

NGC 2617 is a Seyfert galaxy in the equatorial constellation of Hydra. It was discovered on February 12, 1885, by French astronomer Édouard Stephan. In 1888, Danish astronomer J. L. E. Dreyer described it as "extremely faint, very small, 2 very faint stars involved". It is located at an estimated distance of 202 million light years. In the infrared, the galaxy has an angular size of 0.693 by 0.652 arcminutes.

<span class="mw-page-title-main">NGC 5252</span> Galaxy in the constellation of Virgo

NGC 5252 is a lenticular galaxy located in the constellation Virgo. It is located at a distance of about 220 to 320 million light years from Earth, which, given its apparent dimensions, means that NGC 5252 is about 100,000 light years across. It was discovered by William Herschel on February 2, 1786.

<span class="mw-page-title-main">NGC 5506</span> Galaxy in the constellation of Virgo

NGC 5506 is a spiral galaxy located in the constellation Virgo. It is located at a distance of about 75 million light years from Earth, which, given its apparent dimensions, means that NGC 5506 is about 80,000 light years across. It was discovered by William Herschel on April 15, 1787. It is a Seyfert galaxy.

<span class="mw-page-title-main">UGC 5101</span> Galaxy in the constellation of Ursa Major

UGC 5101 is a galaxy merger located in the constellation Ursa Major. It is located at a distance of about 530 million light years from Earth. It is an ultraluminous infrared galaxy. The total infrared luminosity of the galaxy is estimated to be 1011.95 L☉ and the galaxy has a total star formation rate of 105 M☉ per year.

<span class="mw-page-title-main">NGC 2110</span>

NGC 2110 is a lenticular galaxy located in the constellation Orion. It is located at a distance of about 120 million light years from Earth, which, given its apparent dimensions, means that NGC 2110 is about 90,000 light years across. It was discovered by William Herschel on October 5, 1785. It is a Seyfert galaxy.

<span class="mw-page-title-main">NGC 5135</span>

NGC 5135 is a barred spiral galaxy located in the constellation Hydra. It is located at a distance of about 200 million light years from Earth. It was discovered by John Herschel on May 8, 1834. It is a Seyfert galaxy.

<span class="mw-page-title-main">NGC 5953</span> Galaxy in the constellation Serpens

NGC 5953 is a peculiar spiral galaxy in the constellation Serpens. The galaxy lies about 80 million light years away from Earth, which means, given its apparent dimensions, that NGC 5953 is approximately 35,000 light years across. It was discovered by William Herschel on April 17, 1784. NGC 5953 interacts with NGC 5954 forming a pair known as Arp 91.

References

  1. 1 2 3 4 5 6 7 "NASA/IPAC Extragalactic Database". Results for NGC 7682. Retrieved 2020-11-03.
  2. ↑ "Revised NGC Data for NGC 7682". spider.seds.org. Retrieved 25 November 2018.
  3. ↑ Seligman, Courtney. "NGC 7682 (= PGC 71566, and with NGC 7679 = Arp 216)". Celestial Atlas. Retrieved 19 November 2018.
  4. ↑ "High-resolution radio observations of the CfA Seyfert Sample – I. The observations". Monthly Notices of the Royal Astronomical Society. 15 October 1995. doi:10.1093/mnras/276.4.1262.
  5. 1 2 Martini, Paul; Regan, Michael W.; Mulchaey, John S.; Pogge, Richard W. (June 2003). "Circumnuclear Dust in Nearby Active and Inactive Galaxies. I. Data". The Astrophysical Journal Supplement Series. 146 (2): 353–406. arXiv: astro-ph/0212396 . Bibcode:2003ApJS..146..353M. doi:10.1086/367817.
  6. 1 2 Mazzalay, Ximena; Rodríguez-Ardila, Alberto; Komossa, S. (April 2010). "Demystifying the coronal-line region of active galactic nuclei: spatially resolved spectroscopy with the Hubble Space Telescope". Monthly Notices of the Royal Astronomical Society. 405 (2): 1315. arXiv: 1002.3152 . Bibcode:2010MNRAS.405.1315M. doi:10.1111/j.1365-2966.2010.16533.x.
  7. ↑ Bosch, Remco C. E. van den (10 November 2016). "Unification of the Fundamental Plane and Super Massive Black Hole Masses". The Astrophysical Journal. 831 (2): 134. arXiv: 1606.01246 . Bibcode:2016ApJ...831..134V. doi: 10.3847/0004-637X/831/2/134 .
  8. ↑ Keel, W. C. (April 1985). "A radio-quiet emission-line jet in the type 2 Seyfert galaxy NGC 7682". The Astronomical Journal. 90: 577. Bibcode:1985AJ.....90..577K. doi:10.1086/113762.
  9. ↑ Brodie, Jean; Willick, Jeffrey A.; Bowyer, Stuart; Henry, J. Patrick (May 1987). "Narrowband imaging and spectroscopy close to the nucleus of the Seyfert galaxy NGC 7682". The Astronomical Journal. 93: 1054. Bibcode:1987AJ.....93.1054B. doi:10.1086/114388.
  10. ↑ Ricci, C.; Bauer, F. E.; Treister, E.; Schawinski, K.; Privon, G. C.; Blecha, L.; Arevalo, P.; Armus, L.; Harrison, F.; Ho, L. C.; Iwasawa, K.; Sanders, D. B.; Stern, D. (23 January 2017). "Growing supermassive black holes in the late stages of galaxy mergers are heavily obscured". Monthly Notices of the Royal Astronomical Society: stx173. doi: 10.1093/mnras/stx173 . hdl: 20.500.11850/213867 .
  11. ↑ Buson, L. M.; Cappellari, M.; Corsini, E. M.; Held, E. V.; Lim, J.; Pizzella, A. (February 2006). "NGC 7679: an anomalous, composite Seyfert 1 galaxy whose X-ray luminous AGN vanishes at optical wavelengths". Astronomy & Astrophysics. 447 (2): 441–451. arXiv: astro-ph/0510034 . Bibcode:2006A&A...447..441B. doi: 10.1051/0004-6361:20053204 .
  12. ↑ Yankulova, I. M.; Golev, V. K.; Jockers, K. (July 2007). "The luminous infrared composite Seyfert 2 galaxy NGC 7679 through the [O III] λ 5007 emission line". Astronomy & Astrophysics. 469 (3): 891–898. arXiv: 0704.0768 . doi: 10.1051/0004-6361:20077440 .
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