NGC 3367

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NGC 3367
NGC 3367 - Sn1992c a.jpg
NGC 3367 with SN 1992C by ESO
Observation data (J2000 epoch)
Constellation Leo
Right ascension 10h 46m 35.0s [1]
Declination +13° 45′ 03″ [1]
Redshift 0.010142 +/- 0.000024 [1]
Heliocentric radial velocity 3040 ± 7 km/s [1]
Distance 113 ± 22 Mly (34.8 ± 6.7 Mpc) [1]
Apparent magnitude  (V)11.4 [2]
Characteristics
Type SB(rs)c [1]
Apparent size  (V)2.5′ × 2.4′ [2]
Other designations
UGC 5880, CGCG 066-011, MCG +02-28-005, 4C 14.37, PGC 32178 [1]

NGC 3367 is a barred spiral galaxy located in the constellation Leo. It is located at a distance of about 120 million light years from Earth, which, given its apparent dimensions, means that NGC 3367 is about 85,000 light years across. It was discovered by William Herschel on March 19, 1784. [3]

Contents

Characteristics

NGC 3367 is a barred spiral galaxy with an asymmetric shape seen nearly face-on, with an inclination of 25 degrees. [4] The inner arms begin at the ends of the bar, forming a ring with a major axis of 0.9 arcseconds, [5] and after half of a revolution start to branch, creating a multiple-arm structure. They are studded with many bright HII regions. [6] The star formation rate in NGC 3367 is nearly 3 M☉ per year. The outer arms form a semi-circular arch towards the south, at a distance of 50 arcseconds from the centre, more visible in the ultraviolet. [4]

Usually, asymmetry in a galaxy is caused by interaction with other galaxies, but no large satellite has been detected near NGC 3367. The cause of the asymmetry is assumed to be a minor merger or mass accretion that took place in the last billion years. Because no low surface brightness structures, like plumes and star streams, have been detected near NGC 3367, and nor is gas seen in HI imaging near the galaxy, it is believed that the galaxy accreted cold gas in the past million years. This gas accretion resulted in increased star formation and nuclear activity. [4]

NGC 3367 features a strong bar. The bar pattern speed was estimated to be 43 ± 6 km s−1 kpc−1 using the Tremaine-Weinberg method. [7] The bar of the galaxy is more prominent in the near infrared, suggesting the dominance of an old population of stars in that region. There is also a knot at the eastern end of the bar, where there is a non-negligible population of red giants and asymptotic giant branch stars. [4]

Nucleus

NGC 3367 in radio waves by the Very Large Array. NGC 3367 NVAS 1.45I4.23 AG508 1997MAY18 1 33.7U2.69M.jpg
NGC 3367 in radio waves by the Very Large Array.

NGC 3367 has been categorised as a HII region or a type 2 Seyfert galaxy. However, optically there is no hint of an active galactic nucleus (AGN). The spectrum of NGC 3367 features unusually broad lines (FWHM of 490 m/s for Hβ) and a blue asymmetry. The spectrum looks like one produced from Wolf-Rayet stars. [8] There is no clear evidence of H-alpha emission. [9] The spectrum is also dominated by starburst features like low [Fe II] 1.2567 μm/Paβ line ratio. [10] The galaxy was observed by the Spitzer Space Telescope and [Ne v] 14.3 and 24.3 μm lines, consistent with the existence of a weak AGN were detected. [11] Observed by the XMM-Newton telescope, the galaxy's X-ray luminosity in 2-10 keV was 2.0 × 1040 erg s−1 dominated by a power law. This value is consistent with low-luminosity AGNs. [12]

When observed in radio waves, the galaxy features two radio lobes extending from a nuclear source, a feature common to Seyfert 2 galaxies. The emission of the southwest lobe is polarised, indicating it is above the plain of the disk, while the northeast is depolarised. The southwest lobe extends 26" from the nucleus and the northeast 33". The total extent of the source is approximately 12 kpc at the distance of the galaxy. [13] More detailed observations by the Very Large Array revealed a radio jet connecting the nucleus with the southwest lobe and a circumnuclear structure with a radius of nearly 300 pc. [14]

In the centre of the galaxy lies a supermassive black hole whose mass is estimated to be 15×106 (107.2) M☉ based on Ks bulge luminosity. [15] The X-ray spectra of the galaxy suggested the mass of the supermassive black hole to be in the range of 105 to 107M☉. [12]

Around the nucleus, at a radius of circa 2 arcseconds, has been detected using CO(1-0) emission a significant amount of molecular gas. The total mass of molecular gas in that region is estimated to be 3×108M☉ and in the central 5 arcseconds the mass of molecular gas is 5.9×108M☉. The presence of such a large mass could obscure the optical emission lines from an active galactic nucleus. The CO emission has an elongated shape, maybe due to the forces created by the stellar bar. [16]

Supernovae

Six supernovae have been observed in NGC 3367: SN 1986A (type Ia, mag 14.0), SN 1992C (type II, mag. 16.5), SN 2003aa (type Ic, mag. 17.6), SN 2007am (type II, mag. 17.8), SN 2018kp (type Ia, mag. 19.9) and SN 2022ewj (type II, mag. 16.3). [17] [18] SN 1992c was discovered by ESO astronomer Hans van Winckel on January 28, 1992. He found it on a photographic plate obtained by Guido Pizarro during a search programme carried out with the ESO 1-metre Schmidt telescope at La Silla. Spectra of the supernova, obtained by Della Valle and Christoffel Waelkens (Astronomical Institute of Leuven, Belgium), with the 2.2-metre telescope at La Silla, showed it to be of type II and that the explosion must have happened between 10 and 20 days earlier. The expansion velocity was measured at about 7000 km/sec. SN 1992c was located southeast of the centre of the galaxy, at the tip of a spiral arm. SN 1986A was found on February 4, 1986 near the condensations in the spiral arms east of the centre of the galaxy. [19]

Nearby galaxies

NGC 3367 is the foremost member in a galaxy group known as the NGC 3367 group. Other members of the group include NGC 3391, and NGC 3419. A bit further away lie the galaxies NGC 3300, and NGC 3306. [20] NGC 3367 lies in the same region of the sky as the Leo Group, whose redshift is about a third of NGC 3367. NGC 3377, a member of the Leo Group, lies 22 arcminutes to the north of NGC 3367. [21]

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References

  1. 1 2 3 4 5 6 7 "NASA/IPAC Extragalactic Database". Results for NGC 3367. Retrieved 2016-01-18.
  2. 1 2 "Revised NGC Data for NGC 3367". spider.seds.org. Retrieved 25 November 2018.
  3. ↑ Seligman, Courtney. "NGC 3367". Celestial Atlas. Retrieved 19 November 2018.
  4. 1 2 3 4 Hernández-Toledo, H. M.; Cano-Díaz, M.; Valenzuela, O.; Puerari, I.; García-Barreto, J. A; Moreno-Díaz, E.; Bravo-Alfaro, H. (1 December 2011). "The Bulgeless Seyfert/Liner Galaxy NGC 3367: Disk, Bar, Lopsidedness, and Environment". The Astronomical Journal. 142 (6): 182. arXiv: 1104.3622 . Bibcode:2011AJ....142..182H. doi:10.1088/0004-6256/142/6/182. S2CID   119111771.
  5. ↑ Uppsala General Catalogue of Galaxies, 1973, Acta Universitatis Upsalienis, Nova Regiae Societatis Upsaliensis, Series V: A Vol. 1
  6. ↑ Sandage, A., Bedke, J. (1994), The Carnegie Atlas of Galaxies. Volume I, Carnegie Institution of Washington, p. 15
  7. ↑ Gabbasov, R. F.; Repetto, P.; Rosado, M. (1 September 2009). "On the Bar Pattern Speed Determination of NGC 3367". The Astrophysical Journal. 702 (1): 392–402. arXiv: 0908.0718 . Bibcode:2009ApJ...702..392G. doi:10.1088/0004-637X/702/1/392. S2CID   15734407.
  8. ↑ Ho, L. C.; Filippenko, A. V.; Sargent, W. L. (June 1995). "A search for 'dwarf' Seyfert nuclei. 2: an optical spectral atlas of the nuclei of nearby galaxies". The Astrophysical Journal Supplement Series. 98: 477. Bibcode:1995ApJS...98..477H. doi:10.1086/192170.
  9. ↑ Ho, Luis C.; Filippenko, Alexei V.; Sargent, Wallace L. W.; Peng, Chien Y. (October 1997). "A Search for "Dwarf" Seyfert Nuclei. IV. Nuclei with Broad Hα Emission". The Astrophysical Journal Supplement Series. 112 (2): 391–414. arXiv: astro-ph/9704099 . Bibcode:1997ApJS..112..391H. doi:10.1086/313042. S2CID   15256980.
  10. ↑ Alonso-Herrero, Almudena; Rieke, Marcia J.; Rieke, George H.; Shields, Joseph C. (20 February 2000). "The Nature of LINERs". The Astrophysical Journal. 530 (2): 688–703. arXiv: astro-ph/9909316 . Bibcode:2000ApJ...530..688A. doi:10.1086/308388. S2CID   119478156.
  11. ↑ Satyapal, S.; Vega, D.; Dudik, R. P.; Abel, N. P.; Heckman, T. (20 April 2008). "Spitzer Uncovers Active Galactic Nuclei Missed by Optical Surveys in Seven Late-Type Galaxies". The Astrophysical Journal. 677 (2): 926–942. arXiv: 0801.2759 . Bibcode:2008ApJ...677..926S. doi:10.1086/529014. S2CID   16050838.
  12. 1 2 McAlpine, W.; Satyapal, S.; Gliozzi, M.; Cheung, C. C.; Sambruna, R. M.; Eracleous, Michael (10 February 2011). "Black Holes in Bulgeless Galaxies: Anxmm-Newtoninvestigation of NGC 3367 and NGC 4536". The Astrophysical Journal. 728 (1): 25. arXiv: 1012.0834 . Bibcode:2011ApJ...728...25M. doi:10.1088/0004-637X/728/1/25. S2CID   118885784.
  13. ↑ García-Barreto, J. A.; Rudnick, L.; Franco, J.; Martos, M. (July 1998). "Central Activity in the Barred Galaxy NGC 3367". The Astronomical Journal. 116 (1): 111–118. arXiv: astro-ph/9805107 . Bibcode:1998AJ....116..111G. doi:10.1086/300436. S2CID   6880853.
  14. ↑ García-Barreto, J. Antonio; Franco, José; Rudnick, Lawrence (April 2002). "VLA High-Resolution 1.4 and 8.4 GH[CLC]z[/CLC] Mapping of the Barred Galaxy NGC 3367". The Astronomical Journal. 123 (4): 1913–1921. arXiv: astro-ph/0201138 . doi: 10.1086/339559 .
  15. ↑ Dong, X. Y.; De Robertis, M. M. (March 2006). "Low-Luminosity Active Galaxies and Their Central Black Holes". The Astronomical Journal. 131 (3): 1236–1252. arXiv: astro-ph/0510694 . Bibcode:2006AJ....131.1236D. doi:10.1086/499334. S2CID   17630682.
  16. ↑ García-Barreto, J. A.; Scoville, N. Z.; Koda, J.; Sheth, K. (January 2005). "CO in the Bipolar Radio Continuum Galaxy NGC 3367". The Astronomical Journal. 129 (1): 125–135. arXiv: astro-ph/0409486 . Bibcode:2005AJ....129..125G. doi:10.1086/426321. S2CID   6526596.
  17. ↑ List of Supernovae IAU Central Bureau for Astronomical Telegrams. Retrieved 29 December 2015.
  18. ↑ "Bright Supernova pages - Most prolific galaxies". www.rochesterastronomy.org.
  19. ↑ "Supernova 1992C". www.eso.org. 10 November 2010.
  20. ↑ Makarov, Dmitry; Karachentsev, Igor (21 April 2011). "Galaxy groups and clouds in the local (z~ 0.01) Universe". Monthly Notices of the Royal Astronomical Society. 412 (4): 2498–2520. arXiv: 1011.6277 . Bibcode:2011MNRAS.412.2498M. doi: 10.1111/j.1365-2966.2010.18071.x . S2CID   119194025.
  21. ↑ de Vaucouleurs, Gerard Henri; de Vaucouleurs, Antoinette; Shapley, Harlow (1964). Reference catalogue of bright galaxies. Austin: University of Texas Press. Bibcode:1964rcbg.book.....D.


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