UGC 5101 explained

UGC 5101
Epoch:J2000
Type:S? [1]
Dist Ly:528 Mly (162 Mpc)
Z:0.039367 ± 0.000007
H Radial V:11,802 ± 2 km/s
Appmag V:15.1
Size V:0.83 × 0.45
Constellation Name:Ursa Major
Notes:Ultraluminous infrared galaxy
Names:MCG +10-14-025, IRAS 09320+6134, PGC 27292

UGC 5101 is a galaxy merger located in the constellation Ursa Major. It is located at a distance of about 530 million light years from Earth. It is an ultraluminous infrared galaxy. The total infrared luminosity of the galaxy is estimated to be and the galaxy has a total star formation rate of 105 per year.[2]

UGC 5101 has a single nucleus surrounded by spiral isophotes.[3] The nucleus of UGC 5101 has been found to be active and it has been categorised as a type 1.5 Seyfert galaxy or a LINER based on the radio continuum.[4] [5] The most accepted theory for the energy source of active galactic nuclei is the presence of an accretion disk around a supermassive black hole. The mass of the black hole in the centre of UGC 5101 is estimated to be 108.2 (160 million) based on stellar velocity dispersion.[6] The galaxy also hosts a water megamaser, probably originating from the nucleus.[7]

The nucleus emits hard X-rays, which are strongly absorbed, while there is also a soft X-rays component, which could originate from a hidden starburst region.[8] Also NeV emission has been detected in the nucleus, indicating the presence of a hot gas in the coronal line region, while hot dust has been detected around the nucleus, as indicated by the presence of PAH emission and strong silicate absorption.[9] [10] [11] The nucleus is surrounded by a dust torus with an opening angle larger than 41° which partly obstructs the nucleus with a column density of NHLS about cm−2. The hole of the torus is covered with compton thin material.[12] The integrated intensities of HCN to 13CO indicate the gas in the torus is very dense.[13] When observed with very-long-baseline interferometry the galaxy features a ridgeline that could be compact jets generated by the active nucleus.[14]

The galaxy has a tidal tail, seen edge on, and a faint halo of stars that was created during the merger.[15] A second tidal tail appears to loop around the nucleus, forming a ring.[3]

See also

External links

Notes and References

  1. Web site: NASA/IPAC Extragalactic Database . Results for UGC 5101 . 2023-05-06 .
  2. Esposito . Federico . Vallini . Livia . Pozzi . Francesca . Casasola . Viviana . Mingozzi . Matilde . Vignali . Cristian . Gruppioni . Carlotta . Salvestrini . Francesco . AGN impact on the molecular gas in galactic centres as probed by CO lines . Monthly Notices of the Royal Astronomical Society . 16 March 2022 . 512 . 1 . 686–711 . 10.1093/mnras/stac313. free . 2202.00697 .
  3. Scoville . N. Z. . Evans . A. S. . Thompson . R. . Rieke . M. . Hines . D. C. . Low . F. J. . Dinshaw . N. . Surace . J. A. . Armus . L. . NICMOS Imaging of Infrared-Luminous Galaxies . The Astronomical Journal . March 2000 . 119 . 3 . 991–1061 . 10.1086/301248. astro-ph/9912246 . 2000AJ....119..991S . 14039970 .
  4. Abrahamyan . H. V. . Mickaelian . A. M. . Paronyan . G. M. . Mikayelyan . G. A. . Classification by Activity Type of a Sample of Active Galaxies with Radio Emission . Astrophysics . September 2020 . 63 . 3 . 322–333 . 10.1007/s10511-020-09637-0. 2020Ap.....63..322A . 225182307 .
  5. Malkan . Matthew A. . Jensen . Lisbeth D. . Rodriguez . David R. . Spinoglio . Luigi . Rush . Brian . Emission Line Properties of Seyfert Galaxies in the 12 μ m Sample . The Astrophysical Journal . 6 September 2017 . 846 . 2 . 102 . 10.3847/1538-4357/aa8302. 1708.08563 . 2017ApJ...846..102M . 119243981 . free .
  6. Akylas . A. . Papadakis . I. . Georgakakis . A. . Black hole mass estimation using X-ray variability measurements in Seyfert galaxies . Astronomy & Astrophysics . October 2022 . 666 . A127 . 10.1051/0004-6361/202244162 . 2208.12490 . 2022A&A...666A.127A . 251858948 .
  7. Zhang . J. S. . Henkel . C. . Kadler . M. . Greenhill . L. J. . Nagar . N. . Wilson . A. S. . Braatz . J. A. . Extragalactic H 2 O masers and X-ray absorbing column densities . Astronomy & Astrophysics . May 2006 . 450 . 3 . 933–944 . 10.1051/0004-6361:20054138. astro-ph/0512459 . 2006A&A...450..933Z . 18160300 .
  8. Imanishi . Masatoshi . Terashima . Yuichi . Anabuki . Naohisa . Nakagawa . Takao . X-Ray Evidence of a Buried Active Galactic Nucleus in UGC 5101 . The Astrophysical Journal . 20 October 2003 . 596 . 2 . L167–L170 . 10.1086/379503. astro-ph/0309425 . 2003ApJ...596L.167I . 14913058 .
  9. Armus . L. . Charmandaris . V. . Bernard-Salas . J. . Spoon . H. W. W. . Marshall . J. A. . Higdon . S. J. U. . Desai . V. . Teplitz . H. I. . Hao . L. . Devost . D. . Brandl . B. R. . Wu . Y. . Sloan . G. C. . Soifer . B. T. . Houck . J. R. . Herter . T. L. . Observations of Ultraluminous Infrared Galaxies with the Infrared Spectrograph on the Spitzer Space Telescope . II. The IRAS Bright Galaxy Sample . The Astrophysical Journal . 10 February 2007 . 656 . 1 . 148–167 . 10.1086/510107. astro-ph/0610218 . 2007ApJ...656..148A . 25489647 .
  10. Martínez-Paredes . M. . Alonso-Herrero . A. . Aretxaga . I. . Ramos Almeida . C. . Hernán-Caballero . A. . González-Martín . O. . Pereira-Santaella . M. . Packham . C. . Asensio Ramos . A. . Díaz-Santos . T. . Elitzur . M. . Esquej . P. . García-Bernete . I. . Imanishi . M. . Levenson . N. A. . Rodríguez Espinosa . J. M. . A deep look at the nuclear region of UGC 5101 through high angular resolution mid-IR data with GTC/CanariCam . Monthly Notices of the Royal Astronomical Society . 21 December 2015 . 454 . 4 . 3577–3589 . 10.1093/mnras/stv2134. free . 1509.04396 .
  11. Armus . L. . Charmandaris . V. . Spoon . H. W. W. . Houck . J. R. . Soifer . B. T. . Brandl . B. R. . Appleton . P. N. . Teplitz . H. I. . Higdon . S. J. U. . Weedman . D. W. . Devost . D. . Morris . P. W. . Uchida . K. I. . van Cleve . J. . Barry . D. J. . Sloan . G. C. . Grillmair . C. J. . Burgdorf . M. J. . Fajardo-Acosta . S. B. . Ingalls . J. G. . Higdon . J. . Hao . L. . Bernard-Salas . J. . Herter . T. . Troeltzsch . J. . Unruh . B. . Winghart . M. . Observations of Ultraluminous Infrared Galaxies with the Infrared Spectrograph (IRS) on the Spitzer Space Telescope : Early Results on Markarian 1014, Markarian 463, and UGC 5101 . The Astrophysical Journal Supplement Series . September 2004 . 154 . 1 . 178–183 . 10.1086/422915. astro-ph/0406179 . 2004ApJS..154..178A . 43204883 .
  12. Oda . Saeko . Tanimoto . Atsushi . Ueda . Yoshihiro . Imanishi . Masatoshi . Terashima . Yuichi . Ricci . Claudio . Shedding Light on the Compton-thick Active Galactic Nucleus in the Ultraluminous Infrared Galaxy UGC 5101 with Broadband X-Ray Spectroscopy . The Astrophysical Journal . 30 January 2017 . 835 . 2 . 179 . 10.3847/1538-4357/835/2/179. 1612.07450 . 2017ApJ...835..179O . 119441643 . free .
  13. Cruz-González . I . Gómez-Ruiz . A I . Caldú-Primo . A . Benítez . E . Rodríguez-Espinosa . J M . Krongold . Y . Aretxaga . I . Snell . R . González-Martin . O . Negrete . C A . Narayanan . G . Hughes . D H . Yun . M S . Fazio . G G . Chavushyan . V . Hiriart . D . Jiménez-Bailón . E . Herrera-Endoqui . M . Martínez-Paredes . M . González . J J . Early science with the LMT: molecular torus in UGC 5101 . Monthly Notices of the Royal Astronomical Society . 17 October 2020 . 499 . 2 . 2042–2050 . 10.1093/mnras/staa2949. free .
  14. Lonsdale . Carol J. . Lonsdale . Colin J. . Smith . Harding E. . Diamond . Philip J. . VLBI Imaging of Luminous Infrared Galaxies: Active Galactic Nucleus Cores in Markarian 231, UGC 5101, and NGC 7469 . The Astrophysical Journal . August 2003 . 592 . 2 . 804–818 . 10.1086/375778. astro-ph/0304335 . 2003ApJ...592..804L . 14352535 .
  15. Web site: UGC 5101 . www.spacetelescope.org . 19 June 2023 . 24 April 2008 . en.

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