NGC 4253

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NGC 4253
NGC 4253 -hst 11662 547nm.png
NGC 4253 by the Hubble Space Telescope
Observation data (J2000 epoch)
Constellation Coma Berenices
Right ascension 12h 18m 26.5s [1]
Declination +29° 48′ 46″ [1]
Redshift 0.012882 ± 0.000050 [1]
Heliocentric radial velocity 3,862 ± 15 km/s [1]
Distance 185 Mly (56.6 Mpc) [1]
Apparent magnitude  (V)13.5
Characteristics
Type (R')SB(s)a [1]
Apparent size  (V)1.0′ × 0.8′ [1]
Notable featuresSeyfert galaxy
Other designations
UGC 7344, MRK 766, MCG +05-29-051, PGC 39525 [1]

NGC 4253 is a barred spiral galaxy located in the constellation Coma Berenices. It is located at a distance of about 185 million light years from Earth, which, given its apparent dimensions, means that NGC 4253 is about 65,000 light years across. [1] It was discovered by William Herschel on February 3, 1788. [2] It is a Seyfert galaxy. [1]

Contents

Characteristics

The NGC 4253 is a barred galaxy with thick bar, while the arms form a ring. Marquez et al. suggested that the galaxy has a secondary bar perpendicular to the main bar, [3] although that could be an artifact due to the presence of strong dust lanes and no inner bar is visible in images by WFPC2 F606W of the Hubble Space Telescope. [4] There is evidence of star formation along the dust lanes in the leading egde of the bar, especially at the east half. [5]

The nucleus of NGC 4253 has been found to be active and it has been categorised as a narrow line type I Seyfert galaxy. [6] The most accepted theory for the energy source of active galactic nuclei is the presence of an accretion disk around a supermassive black hole. The mass of the black hole in the centre of NGC 5506 is estimated to be 1–13 × 106  M☉ based on reverberation mapping of the hydrogen lines, [7] 1.6+1.4
−1.2×106 M☉ based on time lag spectra, [8] and 1.26+1.00
−0.77×106 M☉ based on X-ray variations. [9]

The nucleus emits X-rays. The X-rays have been found to vary in intensity, exhibiting quasi-periodic oscillation, although this phenomenon appears to be transient. [10] The variability was found by ROSAT X-ray satellite. [11] The intensity varied by a factor of 3 every 6,450 seconds (about 1.8 hours) based on observations by XMM-Newton in 2005, [10] while in 2000 that period was estimated to be 4,200 seconds. [12] It has been suggested that the source of the oscillation lies at the inner part of the accretion disk. [10]

The galaxy has been found to host a maser and is a compact source in radiowaves. [13]

Nearby galaxies

NGC 4253 belongs to a galaxy group known as LGG 276. Other members of this group includes the galaxies NGC 4131, NGC 4134, NGC 4169, NGC 4174, NGC 4175, NGC 4185, NGC 4196, NGC 4132, MCG 5-29-24, MCG 5-29-35, UGC 7221, and UGC 7294. [14] NGC 4245 lies at a projected distance of 16.5 arcminuntes. [15]

See also

Related Research Articles

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

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

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

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<span class="mw-page-title-main">NGC 536</span> Galaxy in the constellation Andromeda

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<span class="mw-page-title-main">NGC 4939</span> Spiral galaxy in the constellation Virgo

NGC 4939 is a spiral galaxy located in the constellation Virgo. It is located at a distance of about 120 million light years from Earth, which, given its apparent dimensions, means that NGC 4939 is about 190,000 light years across. It was discovered by William Herschel on March 25, 1786.

<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 6951</span> Galaxy in the constellation Cepheus

NGC 6951 is a barred spiral galaxy located in the constellation Cepheus. It is located at a distance of about 75 million light-years from Earth, which, given its apparent dimensions, means that NGC 6951 is about 100,000 light-years across. It was discovered by Jérôme Eugène Coggia in 1877 and independently by Lewis Swift in 1878.

<span class="mw-page-title-main">NGC 4636</span> Galaxy in the constellation Virgo

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

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<span class="mw-page-title-main">NGC 2273</span> Galaxy in the constellation Lynx

NGC 2273 is a barred spiral galaxy located in the constellation Lynx. It is located at a distance of circa 95 million light years from Earth, which, given its apparent dimensions, means that NGC 2273 is about 100,000 light years across. It was discovered by Nils Dunér on September 15, 1867.

<span class="mw-page-title-main">NGC 5728</span> Spiral galaxy in the constellation Libra

NGC 5728 is an active barred spiral galaxy located 146 million light years away in the southern constellation of Libra. It was discovered on May 7, 1787 by William Herschel. The designation comes from the New General Catalogue of J. L. E. Dreyer, published in 1888. It has an apparent visual magnitude of 13.40 and spans an angle of 3.4 arcminutes. The galaxy shows a red shift of 0.00935 and has a heliocentric radial velocity of 2,803 km/s. It has an estimated mass of 72 billion times the mass of the Sun and stretches around 30 kpc across.

<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 circa 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 3516</span> Galaxy in the constellation of Ursa Major

NGC 3516 is a barred lenticular galaxy in the constellation of Ursa Major. NGC 3516 is located about 150 million light years away from Earth, which means, given its apparent dimensions, that NGC 3516 is approximately 100,000 light years across. It was discovered by William Herschel on April 3, 1785.

<span class="mw-page-title-main">Markarian 273</span> Galaxy in the constellation of Ursa Major

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<span class="mw-page-title-main">NGC 3786</span> Galaxy in the constellation Ursa Major

NGC 3786 is an intermediate spiral galaxy located 107.5 million light-years away in the northern constellation of Ursa Major. It was discovered by English astronomer John Herschel on April 10, 1831. This object appears to form a close pair with its peculiar neighbor to the north, NGC 3788. They show some indications of interaction, such as minor distortion of the disk or tidal features.

<span class="mw-page-title-main">NGC 5273</span> Galaxy in the constellation Canes Venatici

NGC 5273 is a lenticular galaxy located 54 million light-years away in the northern constellation of Canes Venatici. This galaxy was discovered by William Herschel on May 1, 1785. It is positioned 1+1⁄4° to the southeast of the star 25 Canum Venaticorum.

References

  1. 1 2 3 4 5 6 7 8 9 10 "NASA/IPAC Extragalactic Database". Results for NGC 4253. Retrieved 2023-05-06.
  2. ↑ Seligman, Courtney. "NGC 4253". Celestial Atlas. Retrieved 19 November 2018.
  3. ↑ Márquez, I.; Durret, F.; González Delgado, R. M.; Marrero, I.; Masegosa, J.; Maza, J.; Moles, M.; Pérez, E.; Roth, M. (November 1999). "Near-infrared photometry of isolated spirals with and without an AGN: I. The data". Astronomy and Astrophysics Supplement Series. 140 (1): 1–14. arXiv: astro-ph/9909351 . Bibcode:1999A&AS..140....1M. doi:10.1051/aas:1999516. S2CID   11118939.
  4. ↑ Erwin, Peter (March 2004). "Double-barred galaxies: I. A catalog of barred galaxies with stellar secondary bars and inner disks". Astronomy & Astrophysics. 415 (3): 941–957. arXiv: astro-ph/0310806 . Bibcode:2004A&A...415..941E. doi:10.1051/0004-6361:20034408. S2CID   12717503.
  5. ↑ 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. S2CID   15161097.
  6. ↑ Boller, T.; Brandt, W. N.; Fink, H. (1 January 1996). "Soft X-ray properties of narrow-line Seyfert 1 galaxies". Astronomy and Astrophysics. 305: 53. arXiv: astro-ph/9504093 . Bibcode:1996A&A...305...53B. ISSN   0004-6361.
  7. ↑ Bentz, Misty C.; Walsh, Jonelle L.; Barth, Aaron J.; Yoshii, Yuzuru; Woo, Jong-Hak; Wang, Xiaofeng; Treu, Tommaso; Thornton, Carol E.; Street, Rachel A.; Steele, Thea N.; Silverman, Jeffrey M.; Serduke, Frank J. D.; Sakata, Yu; Minezaki, Takeo; Malkan, Matthew A.; Li, Weidong; Lee, Nicholas; Hiner, Kyle D.; Hidas, Marton G.; Greene, Jenny E.; Gates, Elinor L.; Ganeshalingam, Mohan; Filippenko, Alexei V.; Canalizo, Gabriela; Bennert, Vardha Nicola; Baliber, Nairn (20 June 2010). "The Lick Agn Monitoring Project: Reverberation Mapping of Optical Hydrogen and Helium Recombination Lines". The Astrophysical Journal. 716 (2): 993–1011. arXiv: 1004.2922 . Bibcode:2010ApJ...716..993B. doi:10.1088/0004-637X/716/2/993. S2CID   16275456.
  8. ↑ Emmanoulopoulos, D.; Papadakis, I. E.; Dovčiak, M.; McHardy, I. M. (21 April 2014). "General relativistic modelling of the negative reverberation X-ray time delays in AGN". Monthly Notices of the Royal Astronomical Society. 439 (4): 3931–3950. arXiv: 1402.0899 . doi: 10.1093/mnras/stu249 .
  9. ↑ Giacchè, S.; Gilli, R.; Titarchuk, L. (February 2014). "Analysis of X-ray spectral variability and black hole mass determination of the NLS1 galaxy Mrk 766". Astronomy & Astrophysics. 562: A44. arXiv: 1311.1376 . Bibcode:2014A&A...562A..44G. doi:10.1051/0004-6361/201321904. S2CID   55048489.
  10. 1 2 3 Zhang, Peng; Zhang, Peng-fei; Yan, Jing-zhi; Fan, Yi-zhong; Liu, Qing-zhong (24 October 2017). "An X-Ray Periodicity of ~1.8 hr in Narrow-line Seyfert 1 Galaxy Mrk 766". The Astrophysical Journal. 849 (1): 9. arXiv: 1707.03586 . Bibcode:2017ApJ...849....9Z. doi: 10.3847/1538-4357/aa8d6e . S2CID   119493013.
  11. ↑ Molendi, S.; Maccacaro, T.; Schaeidt, S. (1 April 1993). "Variability of the Seyfert galaxy MKN 766 in the ROSAT all sky survey". Astronomy and Astrophysics. 271: 18–24. Bibcode:1993A&A...271...18M. ISSN   0004-6361.
  12. ↑ Boller, Th.; Keil, R.; Trümper, J.; O'Brien, P. T.; Reeves, J.; Page, M. (January 2001). "Detection of an X-ray periodicity in the Narrow-line Seyfert 1 Galaxy Mrk 766 with XMM-Newton". Astronomy & Astrophysics. 365 (1): L146–L151. arXiv: astro-ph/0010646 . Bibcode:2001A&A...365L.146B. doi:10.1051/0004-6361:20000083. S2CID   17363989.
  13. ↑ Tarchi, A.; Castangia, P.; Columbano, A.; Panessa, F.; Braatz, J. A. (August 2011). "Narrow-line Seyfert 1 galaxies: an amasing class of AGN". Astronomy & Astrophysics. 532: A125. arXiv: 1107.5155 . Bibcode:2011A&A...532A.125T. doi:10.1051/0004-6361/201117213. S2CID   118464236.
  14. ↑ Garcia, A. M. (1 July 1993). "General study of group membership. II. Determination of nearby groups". Astronomy and Astrophysics Supplement Series. 100: 47–90. Bibcode:1993A&AS..100...47G. ISSN   0365-0138.
  15. ↑ de Vaucouleurs, G.; de Vaucouleurs, A.; Corwin, J. R. (1 January 1976). "Second reference catalogue of bright galaxies". Second Reference Catalogue of Bright Galaxies. 1976. Bibcode:1976RC2...C......0D.
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