NGC 1614

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NGC 1614
NGC1614 - HST - Potw2032a.tif
Hubble Space Telescope image of NGC 1614
Observation data (J2000 epoch)
Constellation Eridanus
Right ascension 04h 34m 00.027s
Declination −08° 34′ 44.57″
Redshift 0.015938±0.000033 [1]
Helio radial velocity 4,778 [2]
Distance 211.3  Mly (64.78  Mpc) [2]
Characteristics
Type SB(s)c pec. [1]
Notable featuresStarburst galaxy with an active galactic nucleus
Other designations
2MASX J04340002-0834445, APG 186, IRAS 04315-0840, Mrk 0617, II Zw 015, PGC 15538

NGC 1614 is the New General Catalogue identifier for a spiral galaxy in the equatorial constellation of Eridanus. It was discovered on December 29, 1885 by American astronomer Lewis Swift, who described it in a shorthand notation as: pretty faint, small, round, a little brighter middle. [3] The nebula was then catalogued by Danish-Irish astronomer J. L. E. Drayer in 1888. [4] When direct photography became available, it was noted that this galaxy displayed some conspicuous peculiarities. American astronomer Halton Arp included it in his 1966 Atlas of Peculiar Galaxies . [5] In 1971, Swiss astronomer Fritz Zwicky described it as a "blue post-eruptive galaxy, compact patchy core, spiral plumes, long blue jet SSW". [6]

In the De Vaucouleurs system for classifying galaxies, NGC 1614 has a galaxy morphological classification of SB(s)c pec. The SB indicates this is a barred spiral galaxy, while the '(s)' means it lacks a ring-like structure around the nucleus. The trailing 'c' describes the spiral arm structure as being loosely wound. The peculiar nature of the galaxy is noted with the 'pec.' abbreviation. [1] The galaxy is bright at the center, with two nearly symmetrical inner spiral arms. [7] It is a luminous infrared source, [8] with total infrared luminosity is 1011.60  L☉ , ranking 55th in the 2003 IRAS Revised Bright Galaxy Sample, [9] and is the second most luminous galaxy within 75 Mpc. [10]

This galaxy is undergoing a minor merger event with a gas-rich, low-mass companion galaxy, located in a tidal tail to the southwest of the nucleus. The main galaxy is estimated to be around 3−5 times as massive as the merging object. The interaction between the two galaxies is triggering a burst of star formation in NGC 1614, [8] although not apparently an active galactic nucleus. [11] It is described as "one of the most extreme nearby starbursts". [10]

In the core region, a 230 pc radius ring feature has formed around the nucleus within the last 5−10 million years from an inflow of gas caused by the merger event, and this structure is the site of the intense star forming activity known as a starburst region. [7] This activity is bright enough that it is masking whatever weak nuclear emission there is coming from the core. [10] The nucleus itself displays evidence of an older starburst event. [7] The starburst activity is presumed to be driving an observed outflow of cold molecular gas that has a combined mass of around 32 million times the mass of the Sun. [11]

Two supernovae have been observed in NGC 1614: SN 1996D (type Ic, mag. 18.2), [12] and SN 2020cuj (type II, mag. 20). [13]

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<span class="mw-page-title-main">NGC 2841</span> Galaxy in the constellation Ursa Major

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

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<span class="mw-page-title-main">NGC 4041</span> Spiral galaxy in the constellation Ursa Major

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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 3367</span> Spiral galaxy in the constellation Leo

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.

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

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<span class="mw-page-title-main">NGC 1142</span> Interacting and distorted spiral galaxy in the constellation Cetus

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<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.

References

  1. 1 2 3 de Vaucouleurs, G.; et al. (1991), Third reference catalogue of bright galaxies, version 9, New York: Springer-Verlag.
  2. 1 2 Crook, Aidan C.; et al. (February 2007), "Groups of Galaxies in the Two Micron All Sky Redshift Survey", The Astrophysical Journal, 655 (2): 790–813, arXiv: astro-ph/0610732 , Bibcode:2007ApJ...655..790C, doi:10.1086/510201, S2CID   11672751.
  3. ↑ Swift, L. (September 1886), "Catalogue No. 3 of Nebulae discovered at the Warner Observatory", Astronomische Nachrichten, 115 (10): 153–159, Bibcode:1886AN....115..153S, doi:10.1002/asna.18861151003. Entry no. 30.{{citation}}: CS1 maint: postscript (link)
  4. ↑ Dreyer, J. L. E. (2000), NGC2000.0: Complete New General Catalog and Index Catalog, NASA , retrieved 2016-03-18.
  5. ↑ Arp, Halton (November 1966), "Atlas of Peculiar Galaxies", Astrophysical Journal Supplement, 14: 1, Bibcode:1966ApJS...14....1A, doi:10.1086/190147. Entry no. 186.{{citation}}: CS1 maint: postscript (link)
  6. ↑ Ulrich, M.-H. (November 1972), "The compact central region of the galaxy NGC 1614.", Astrophysical Journal, 178: 113–118, Bibcode:1972ApJ...178..113U, doi: 10.1086/151770 .
  7. 1 2 3 Sliwa, Kazimierz; et al. (November 2014), "Around the Ring We Go: The Cold, Dense Ring of Molecular Gas in NGC 1614", The Astrophysical Journal Letters, 796 (1): 7, arXiv: 1410.6982 , Bibcode:2014ApJ...796L..15S, doi:10.1088/2041-8205/796/1/L15, S2CID   118498068, L15.
  8. 1 2 König, S.; et al. (May 2013), "The NGC 1614 interacting galaxy. Molecular gas feeding a "ring of fire"", Astronomy & Astrophysics, 553: 11, arXiv: 1303.1012 , Bibcode:2013A&A...553A..72K, doi:10.1051/0004-6361/201220453, S2CID   62891999, A72.
  9. ↑ Sanders, D. B.; et al. (October 2003), "The IRAS Revised Bright Galaxy Sample", The Astronomical Journal, 126 (4): 1607–1664, arXiv: astro-ph/0306263 , Bibcode:2003AJ....126.1607S, doi:10.1086/376841, S2CID   14825701.
  10. 1 2 3 Pereira-Santaella, M.; et al. (December 2015), "Sub-arcsec mid-IR observations of NGC 1614: Nuclear star formation or an intrinsically X-ray weak AGN?", Monthly Notices of the Royal Astronomical Society, 454 (4): 3679–3687, arXiv: 1509.07765 , Bibcode:2015MNRAS.454.3679P, doi:10.1093/mnras/stv2242, S2CID   119270767.
  11. 1 2 García-Burillo, S.; et al. (August 2015), "High-resolution imaging of the molecular outflows in two mergers: IRAS 17208-0014 and NGC 1614", Astronomy & Astrophysics, 580: 21, arXiv: 1505.04705 , Bibcode:2015A&A...580A..35G, doi:10.1051/0004-6361/201526133, S2CID   38986586, A35.
  12. ↑ Transient Name Server entry for SN 1996D. Retrieved 30 March 2023.
  13. ↑ Transient Name Server entry for SN 2020cuj. Retrieved 30 March 2023.


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