| NGC 1614 | |
|---|---|
 Hubble Space Telescope image of NGC 1614 | |
| Observation data (J2000 epoch) | |
| Constellation | Eridanus |
| Right ascension | 04 34 00.027 |
| Declination | −08° 34′ 44.57″ |
| Redshift | 0.015938±0.000033 |
| Heliocentric radial velocity | 4,778 |
| Distance | 211.3 Mly (64.78 Mpc) |
| Characteristics | |
| Type | SB(s)c pec. |
| Notable features | Starburst 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. The nebula was then catalogued by Danish-Irish astronomer J. L. E. Drayer in 1888. 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. In 1971, Swiss astronomer Fritz Zwicky described it as a "blue post-eruptive galaxy, compact patchy core, spiral plumes, long blue jet SSW".
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. The galaxy is bright at the center, with two nearly symmetrical inner spiral arms. It is a luminous infrared source, with total infrared luminosity is 10 L☉, ranking 55th in the 2003 IRAS Revised Bright Galaxy Sample, and is the second most luminous galaxy within 75 Mpc.
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, although not apparently an active galactic nucleus. It is described as "one of the most extreme nearby starbursts".
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. This activity is bright enough that it is masking whatever weak nuclear emission there is coming from the core. The nucleus itself displays evidence of an older starburst event. 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.
Supernovae
Two supernovae have been observed in NGC 1614:
- SN 1996D (type Ic, mag. 18.2) was discovered by L. Drissen, C. Robert, Y. Dutil, and J.-R. Roy on 9 February 1996.
- SN 2020cuj (type II, mag. 20) was discovered by the Zwicky Transient Facility on 12 February 2020.
References
- ^ de Vaucouleurs, G.; et al. (1991), Third reference catalogue of bright galaxies, version 9, New York: Springer-Verlag.
- ^ 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.
- 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) - Dreyer, J. L. E. (2000), NGC2000.0: Complete New General Catalog and Index Catalog, NASA, retrieved 2016-03-18.
- 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) - 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.
- ^ 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.
- ^ 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.
- 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.
- ^ 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.
- ^ 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.
- Drissen, L.; Robert, C.; Dutil, Y.; Roy, J. -R.; Filippenko, A. V.; Cappellaro, E.; Patat, F. (1996). "Supernova 1996D in NGC 1614". International Astronomical Union Circular (6317): 2. Bibcode:1996IAUC.6317....2D.
- "SN 1996D". Transient Name Server. IAU. Retrieved 10 December 2024.
- "SN 2020cuj". Transient Name Server. IAU. Retrieved 10 December 2024.
External links
- "NGC 1614", The Hubble Space Telescope, NASA/ESA, April 24, 2008, retrieved 2016-03-21.
