NGC 1042
{{Short description|Spiral galaxy in the constellation Cetus}}
{{Infobox Galaxy
| name = NGC 1042
| image =File:NGC1042-hst-R606GB450.jpg
| caption = NGC 1042 imaged by the Hubble Space Telescope
| epoch = J2000
| ra = {{RA|02|40|24.0}}{{cite web
| title=NASA/IPAC Extragalactic Database
| work=Results for NGC 1042
| url=http://nedwww.ipac.caltech.edu/
| access-date=2006-12-03}}
| constellation name = Cetus
| dist_ly =55.5 Mly (17.02 Mpc)
| group_cluster = NGC 1052 group
| size_v = 2.3{{prime}} × 1.0{{prime}}
| notes =
| names = {{ odlist | MCG= -02-07-054 | IRAS= 02379-0838 | PGC= 10122}}
| h_radial_v=1,371 ± 2 km/s|size=39,200 ly
}}
NGC 1042 is a spiral galaxy located in the constellation Cetus. It was discovered on 10 November 1885 by American astronomer Lewis Swift.{{cite web | url = https://cseligman.com/text/atlas/ngc10.htm#1042 | title = New General Catalogue Objects: NGC{{nbsp}}1042 | last = Seligman | first = Courtney | website = Celestial Atlas | access-date = 7 September 2024 }} The galaxy has an apparent magnitude of 14.0.
NGC 1042 is a low-luminosity active galaxy.{{Cite journal |last1=Böker |first1=T. |last2=Schinnerer |first2=E. |last3=Lisenfeld |first3=U. |date=2011-09-21 |title=Molecular gas around low-luminosity AGN in late-type spirals |url=http://dx.doi.org/10.1051/0004-6361/201117262 |journal=Astronomy & Astrophysics |volume=534 |pages=A12 |doi=10.1051/0004-6361/201117262 |arxiv=1108.1786 |bibcode=2011A&A...534A..12B |issn=0004-6361}}{{Cite journal |last1=Luo(罗荣欣) |first1=Rongxin |last2=Hao |first2=Lei |last3=Blanc |first3=Guillermo A. |last4=Jogee |first4=Shardha |last5=Bosch |first5=Remco C. E. van den |last6=Weinzirl |first6=Tim |date=2016-05-25 |title=THE VIRUS-P EXPLORATION OF NEARBY GALAXIES (VENGA): RADIAL GAS INFLOW AND SHOCK EXCITATION IN NGC 1042 |journal=The Astrophysical Journal |volume=823 |issue=2 |pages=85 |doi=10.3847/0004-637x/823/2/85 |doi-access=free |arxiv=1603.07928 |bibcode=2016ApJ...823...85L |issn=0004-637X}} Furthermore, its luminosity class is III–IV and it has a broad HI line.{{Cite web |title=Detailed Object Classifications for NGC 1042 |url=https://ned.ipac.caltech.edu/cgi-bin/NEDatt?objname=NGC+1042 |access-date=2024-08-01 |website=ned.ipac.caltech.edu}} It is known that NGC 1042 also hosts an intermediate-mass black hole in its center.{{Cite journal |last1=Shields |first1=Joseph C. |last2=Walcher |first2=C. Jakob |last3=Böker |first3=Torsten |last4=Ho |first4=Luis C. |last5=Rix |first5=Hans-Walter |last6=van der Marel |first6=Roeland P. |date=2008-07-20 |title=An Accreting Black Hole in the Nuclear Star Cluster of the Bulgeless Galaxy NGC 1042 |url=http://dx.doi.org/10.1086/589680 |journal=The Astrophysical Journal |volume=682 |issue=1 |pages=104–109 |doi=10.1086/589680 |arxiv=0804.4024 |bibcode=2008ApJ...682..104S |issn=0004-637X}}
NGC 1042 contains an ultraluminous X-ray source called NGC 1042 ULX1.{{Cite journal |last1=Ghosh |first1=Tanuman |last2=Rana |first2=Vikram |date=2022-10-21 |title=Spectral variability in NGC 1042 ULX1 |journal=Monthly Notices of the Royal Astronomical Society |volume=517 |issue=3 |pages=4247–4255 |doi=10.1093/mnras/stac2979 |doi-access=free |issn=0035-8711|arxiv=2209.02458 }}
Morphology
NGC 1042 is a late-type galaxy, classified as type SAB(rs)cd.{{Cite book |last1=de Vaucouleurs |first1=Gerard |url=https://ui.adsabs.harvard.edu/abs/1991rc3..book.....D |title=Third Reference Catalogue of Bright Galaxies |last2=de Vaucouleurs |first2=Antoinette |last3=Corwin |first3=Herold G., Jr. |last4=Buta |first4=Ronald J. |last5=Paturel |first5=Georges |last6=Fouque |first6=Pascal |date=1991-01-01|bibcode=1991rc3..book.....D }} 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.{{Cite journal |last1=Elmegreen |first1=Debra Meloy |last2=Elmegreen |first2=Bruce G. |date=1987-03-01 |title=Arm Classifications for Spiral Galaxies |url=https://ui.adsabs.harvard.edu/abs/1987ApJ...314....3E |journal=The Astrophysical Journal |volume=314 |pages=3 |doi=10.1086/165034 |bibcode=1987ApJ...314....3E |issn=0004-637X}} 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,{{Cite journal |last1=Marinova |first1=Irina |last2=Jogee |first2=Shardha |date=2007-04-20 |title=Characterizing Bars atz∼ 0 in the Optical and NIR: Implications for the Evolution of Barred Disks with Redshift |url=http://dx.doi.org/10.1086/512355 |journal=The Astrophysical Journal |volume=659 |issue=2 |pages=1176–1197 |doi=10.1086/512355 |arxiv=astro-ph/0608039 |bibcode=2007ApJ...659.1176M |issn=0004-637X}} while others classified it an unbarred spiral galaxy.{{Cite journal |last1=Weinzirl |first1=Tim |last2=Jogee |first2=Shardha |last3=Khochfar |first3=Sadegh |last4=Burkert |first4=Andreas |last5=Kormendy |first5=John |date=2009-05-01 |title=Bulge n and B/T in High-Mass Galaxies: Constraints on the Origin of Bulges in Hierarchical Models |url=https://ui.adsabs.harvard.edu/abs/2009ApJ...696..411W |journal=The Astrophysical Journal |volume=696 |issue=1 |pages=411–447 |doi=10.1088/0004-637X/696/1/411 |arxiv=0807.0040 |bibcode=2009ApJ...696..411W |issn=0004-637X}}{{Cite journal |last1=Li |first1=Zhao-Yu |last2=Ho |first2=Luis C. |last3=Barth |first3=Aaron J. |last4=Peng |first4=Chien Y. |date=2011-12-01 |title=The Carnegie-Irvine Galaxy Survey. II. Isophotal Analysis |url=https://ui.adsabs.harvard.edu/abs/2011ApJS..197...22L |journal=The Astrophysical Journal Supplement Series |volume=197 |issue=2 |pages=22 |doi=10.1088/0067-0049/197/2/22 |arxiv=1111.4606 |bibcode=2011ApJS..197...22L |issn=0067-0049}} Further evidence by them suggests, the inner arms of NGC 1042 are curved with a bar-like structure that is mistaken as a bar.{{Cite journal |last1=Buta |first1=R. |last2=Vasylyev |first2=S. |last3=Salo |first3=H. |last4=Laurikainen |first4=E. |date=2005-08-01 |title=The Distribution of Bar and Spiral Arm Strengths in Disk Galaxies |url=https://ui.adsabs.harvard.edu/abs/2005AJ....130..506B |journal=The Astronomical Journal |volume=130 |issue=2 |pages=506–523 |doi=10.1086/431251 |arxiv=astro-ph/0505079 |bibcode=2005AJ....130..506B |issn=0004-6256}}
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.{{cite book
| author=A. Sandage | author2= J. Bedke
| date=1994
| title=Carnegie Atlas of Galaxies
| publisher=Carnegie Institution of Washington
| location=Washington, D.C.
| isbn=978-0-87279-667-6}} In additional, NGC 1042 is also a member of the NGC 1052 group.{{Cite journal |last1=Kourkchi |first1=Ehsan |last2=Tully |first2=R. Brent |date=2017-07-01 |title=Galaxy Groups Within 3500 km s-1 |journal=The Astrophysical Journal |volume=843 |issue=1 |pages=16 |doi=10.3847/1538-4357/aa76db |doi-access=free |arxiv=1705.08068 |bibcode=2017ApJ...843...16K |issn=0004-637X}} 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.{{Cite journal |last1=van Dokkum |first1=Pieter |last2=Danieli |first2=Shany |last3=Romanowsky |first3=Aaron |last4=Abraham |first4=Roberto |last5=Conroy |first5=Charlie |date=2019-02-01 |title=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 |journal=Research Notes of the AAS |volume=3 |issue=2 |pages=29 |doi=10.3847/2515-5172/ab05d6 |doi-access=free |arxiv=1902.02807 |bibcode=2019RNAAS...3...29V |issn=2515-5172}}
File:NGC 1042 SDSS.png|NGC 1042 and its neighbors including NGC 1035
See also
References
{{reflist}}
External links
- {{Commons category-inline}}
- [http://www.noao.edu/outreach/aop/observers/n1042.html Picture of NGC 1042]
- {{WikiSky}}
{{Sky|02|40|24|-|08|26|01|51000000}}
{{Ngc15}}
{{Catalogs|NGC=1042|PGC=10122}}
{{Cetus}}
{{DEFAULTSORT:NGC 1042}}