NGC 1042 explained

NGC 1042
Epoch:J2000
Ra:[1]
Constellation Name:Cetus
Z:0.004573 ± 0.000007
Dist Ly:55.5 Mly (17.02 Mpc)
Type:SAB(rs)cd
Appmag V:14.0
Size V:2.3 × 1.0
Names: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 constellationCetus. The galaxy has an apparent magnitude of 14.0.

NGC 1042 is a low-luminosity active galaxy.[2] [3] Furthermore, its luminosity class is III-IV and it has a broad HI line.[4] It is known that NGC 1042 also hosts an intermediate-mass black hole in its center.[5]

NGC 1042 contains an ultraluminous X-ray source called NGC 1042 ULX1.[6]

Morphology

NGC 1042 is a late-type galaxy, classified as type SAB(rs)cd.[7] 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.[8] 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,[9] while others classified it an unbarred spiral galaxy.[10] [11] Further evidence by them suggests, the inner arms of NGC 1042 are curved with a bar-like structure that is mistaken as a bar.[12]

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.[13] In additional, NGC 1042 is also a member of the NGC 1052 group.[14] 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.[15]

External links

Notes and References

  1. Web site: NASA/IPAC Extragalactic Database . Results for NGC 1042 . 2006-12-03.
  2. Böker . T. . Schinnerer . E. . Lisenfeld . U. . 2011-09-21 . Molecular gas around low-luminosity AGN in late-type spirals . Astronomy & Astrophysics . 534 . A12 . 10.1051/0004-6361/201117262 . 1108.1786 . 2011A&A...534A..12B . 0004-6361.
  3. 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 . 10.3847/0004-637x/823/2/85 . free . 1603.07928 . 2016ApJ...823...85L . 0004-637X.
  4. Web site: Detailed Object Classifications for NGC 1042 . 2024-08-01 . ned.ipac.caltech.edu.
  5. 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 . 10.1086/589680 . 0804.4024 . 2008ApJ...682..104S . 0004-637X.
  6. Ghosh . Tanuman . Rana . Vikram . 2022-10-21 . Spectral variability in NGC 1042 ULX1 . Monthly Notices of the Royal Astronomical Society . 517 . 3 . 4247–4255 . 10.1093/mnras/stac2979 . free . 0035-8711. 2209.02458 .
  7. Book: de Vaucouleurs . Gerard . Third Reference Catalogue of Bright Galaxies . de Vaucouleurs . Antoinette . Corwin . Herold G., Jr. . Buta . Ronald J. . Paturel . Georges . Fouque . Pascal . 1991-01-01. 1991rc3..book.....D .
  8. Elmegreen . Debra Meloy . Elmegreen . Bruce G. . 1987-03-01 . Arm Classifications for Spiral Galaxies . The Astrophysical Journal . 314 . 3 . 10.1086/165034 . 1987ApJ...314....3E . 0004-637X.
  9. 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 . 10.1086/512355 . astro-ph/0608039 . 2007ApJ...659.1176M . 0004-637X.
  10. 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 . 10.1088/0004-637X/696/1/411 . 0807.0040 . 2009ApJ...696..411W . 0004-637X.
  11. 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 . 10.1088/0067-0049/197/2/22 . 1111.4606 . 2011ApJS..197...22L . 0067-0049.
  12. 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 . 10.1086/431251 . astro-ph/0505079 . 2005AJ....130..506B . 0004-6256.
  13. Book: A. Sandage . J. Bedke. 1994. Carnegie Atlas of Galaxies. Carnegie Institution of Washington. Washington, D.C.. 978-0-87279-667-6.
  14. Kourkchi . Ehsan . Tully . R. Brent . 2017-07-01 . Galaxy Groups Within 3500 km s-1 . The Astrophysical Journal . 843 . 1 . 16 . 10.3847/1538-4357/aa76db . free . 1705.08068 . 2017ApJ...843...16K . 0004-637X.
  15. 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 . 10.3847/2515-5172/ab05d6 . free . 1902.02807 . 2019RNAAS...3...29V . 2515-5172.

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