NGC 1042

NGC 1042 is a spiral galaxy located in the constellation Cetus. It was discovered on 10 November 1885 by American astronomer Lewis Swift.^[2] The galaxy has an apparent magnitude of 14.0.

NGC 1042
NGC 1042 imaged by the Hubble Space Telescope
Observation data (J2000 epoch)
Constellation	Cetus
Right ascension	02h 40m 24.0s[1]
Declination	−08° 26′ 01″[1]
Redshift	0.004573 ± 0.000007[1]
Heliocentric radial velocity	1,371 ± 2 km/s
Distance	55.5 Mly (17.02 Mpc)
Group or cluster	NGC 1052 group
Apparent magnitude (V)	14.0[1]
Characteristics
Type	SAB(rs)cd[1]
Size	39,200 ly
Apparent size (V)	2.3′ × 1.0′ [1]
Other designations
IRAS 02379-0838, MCG -02-07-054, PGC 10122[1]

NGC 1042 is a low-luminosity active galaxy.^[3][4] Furthermore, its luminosity class is III–IV and it has a broad HI line.^[5] It is known that NGC 1042 also hosts an intermediate-mass black hole in its center.^[6]

NGC 1042 contains an ultraluminous X-ray source called NGC 1042 ULX1.^[7]

Morphology

NGC 1042 is a late-type galaxy, classified as type SAB(rs)cd.^[8] It has a bulgeless structure with spiral arms consisting of two symmetric arms located in the inner side with ceaseless long outer arms, with an Arm Class 9 classification.^[9] The spiral galaxy type of NGC 1042 is a mystery; some astronomers classified it a barred spiral galaxy based on ellipse fitting via B- and H-band images,^[10] while others classified it an unbarred spiral galaxy.^[11][12] Further evidence by them suggests, the inner arms of NGC 1042 are curved with a bar-like structure that is mistaken as a bar.^[13][4]

Nearby galaxies

NGC 1042 appears near the spiral galaxy NGC 1035 in the sky, with both having similar redshifts. The two objects may therefore be physically associated with each other.^[14] In additional, NGC 1042 is also a member of the NGC 1052 group.^[15] It is shown to be the only galaxy with a large gas reservoir, indicating it was stripped of gas during a past interaction with NGC 1052.^[16]

• 
  NGC 1042 and its neighbors including NGC 1035

See also

• List of NGC objects (1001–2000)

References

1. "NASA/IPAC Extragalactic Database". Results for NGC 1042. Retrieved 2006-12-03.
2. Seligman, Courtney. "New General Catalogue Objects: NGC 1042". Celestial Atlas. Retrieved 7 September 2024.
3. Böker, T.; Schinnerer, E.; Lisenfeld, U. (2011-09-21). "Molecular gas around low-luminosity AGN in late-type spirals". Astronomy & Astrophysics. 534: A12. arXiv:1108.1786. Bibcode:2011A&A...534A..12B. doi:10.1051/0004-6361/201117262. ISSN 0004-6361.
4. Luo(罗荣欣), Rongxin; Hao, Lei; Blanc, Guillermo A.; Jogee, Shardha; Bosch, Remco C. E. van den; Weinzirl, Tim (2016-05-25). "THE VIRUS-P EXPLORATION OF NEARBY GALAXIES (VENGA): RADIAL GAS INFLOW AND SHOCK EXCITATION IN NGC 1042". The Astrophysical Journal. 823 (2): 85. arXiv:1603.07928. Bibcode:2016ApJ...823...85L. doi:10.3847/0004-637x/823/2/85. ISSN 0004-637X.
5. "Detailed Object Classifications for NGC 1042". ned.ipac.caltech.edu. Retrieved 2024-08-01.
6. Shields, Joseph C.; Walcher, C. Jakob; Böker, Torsten; Ho, Luis C.; Rix, Hans-Walter; van der Marel, Roeland P. (2008-07-20). "An Accreting Black Hole in the Nuclear Star Cluster of the Bulgeless Galaxy NGC 1042". The Astrophysical Journal. 682 (1): 104–109. arXiv:0804.4024. Bibcode:2008ApJ...682..104S. doi:10.1086/589680. ISSN 0004-637X.
7. Ghosh, Tanuman; Rana, Vikram (2022-10-21). "Spectral variability in NGC 1042 ULX1". Monthly Notices of the Royal Astronomical Society. 517 (3): 4247–4255. arXiv:2209.02458. doi:10.1093/mnras/stac2979. ISSN 0035-8711.
8. de Vaucouleurs, Gerard; de Vaucouleurs, Antoinette; Corwin, Herold G., Jr.; Buta, Ronald J.; Paturel, Georges; Fouque, Pascal (1991-01-01). Third Reference Catalogue of Bright Galaxies. Bibcode:1991rc3..book.....D.{{cite book}}: CS1 maint: multiple names: authors list (link)
9. Elmegreen, Debra Meloy; Elmegreen, Bruce G. (1987-03-01). "Arm Classifications for Spiral Galaxies". The Astrophysical Journal. 314: 3. Bibcode:1987ApJ...314....3E. doi:10.1086/165034. ISSN 0004-637X.
10. Marinova, Irina; Jogee, Shardha (2007-04-20). "Characterizing Bars atz∼ 0 in the Optical and NIR: Implications for the Evolution of Barred Disks with Redshift". The Astrophysical Journal. 659 (2): 1176–1197. arXiv:astro-ph/0608039. Bibcode:2007ApJ...659.1176M. doi:10.1086/512355. ISSN 0004-637X.
11. Weinzirl, Tim; Jogee, Shardha; Khochfar, Sadegh; Burkert, Andreas; Kormendy, John (2009-05-01). "Bulge n and B/T in High-Mass Galaxies: Constraints on the Origin of Bulges in Hierarchical Models". The Astrophysical Journal. 696 (1): 411–447. arXiv:0807.0040. Bibcode:2009ApJ...696..411W. doi:10.1088/0004-637X/696/1/411. ISSN 0004-637X.
12. Li, Zhao-Yu; Ho, Luis C.; Barth, Aaron J.; Peng, Chien Y. (2011-12-01). "The Carnegie-Irvine Galaxy Survey. II. Isophotal Analysis". The Astrophysical Journal Supplement Series. 197 (2): 22. arXiv:1111.4606. Bibcode:2011ApJS..197...22L. doi:10.1088/0067-0049/197/2/22. ISSN 0067-0049.
13. Buta, R.; Vasylyev, S.; Salo, H.; Laurikainen, E. (2005-08-01). "The Distribution of Bar and Spiral Arm Strengths in Disk Galaxies". The Astronomical Journal. 130 (2): 506–523. arXiv:astro-ph/0505079. Bibcode:2005AJ....130..506B. doi:10.1086/431251. ISSN 0004-6256.
14. A. Sandage; J. Bedke (1994). Carnegie Atlas of Galaxies. Washington, D.C.: Carnegie Institution of Washington. ISBN 978-0-87279-667-6.
15. Kourkchi, Ehsan; Tully, R. Brent (2017-07-01). "Galaxy Groups Within 3500 km s-1". The Astrophysical Journal. 843 (1): 16. arXiv:1705.08068. Bibcode:2017ApJ...843...16K. doi:10.3847/1538-4357/aa76db. ISSN 0004-637X.
16. van Dokkum, Pieter; Danieli, Shany; Romanowsky, Aaron; Abraham, Roberto; Conroy, Charlie (2019-02-01). "The Distance to NGC 1042 in the Context of its Proposed Association with the Dark Matter-deficient Galaxies NGC 1052-DF2 and NGC 1052-DF4". Research Notes of the AAS. 3 (2): 29. arXiv:1902.02807. Bibcode:2019RNAAS...3...29V. doi:10.3847/2515-5172/ab05d6. ISSN 2515-5172.

External links

• Media related to NGC 1042 at Wikimedia Commons
• Picture of NGC 1042
• NGC 1042 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images