NGC 3675 explained

NGC 3675
Epoch:J2000
Type:SA(s)b [1]
Dist Ly:53 ± 10 Mly (16.2 ± 3.0 Mpc)
Z:770 ± 1 km/s
Appmag V:10.0
Size V:5.9 × 3.1
Constellation Name:Ursa Major
Names:UGC 6439, MCG +07-24-004, PGC 35164

NGC 3675 is a spiral galaxy located in the constellation Ursa Major. It is located at a distance of circa 50 million light years from Earth, which, given its apparent dimensions, means that NGC 3675 is about 100,000 light years across. It was discovered by William Herschel in 1788.

It hosts a low-ionization nuclear emission-line region (LINER).[2] In the nucleus there is a supermassive black hole with an estimated mass of 10-39 million, based on the intrinsic velocity dispersion as measured by the Hubble Space Telescope.[3] Although the galaxy was reported to have a strong bar visible in infrared images, there has been no indication of a bar in further observations.[4] Its spiral disk is of type III and there is a dust structure which is more prominent to the east.[5] The galaxy features two ring structures, with diameter 1.62 and 2.42 arcminutes.[6] The spiral arms are tightly wound and form an inner pseudoring and they continue for one revolution outside the ring. The outer arms are very patchy and filamentary.[7]

One supernova has been observed in NGC 3675, SN 1984R. NGC 3675 belongs to the Ursa Major Cluster, part of the Virgo Supercluster.[8]

Notes and References

  1. Web site: NASA/IPAC Extragalactic Database . Results for NGC 3675 . 2016-01-18 .
  2. McKernan. B.. Ford. K. E. S.. Reynolds. C. S.. Black hole mass, host galaxy classification and AGN activity. Monthly Notices of the Royal Astronomical Society. 20 July 2010. 407. 4. 2399–2410. 10.1111/j.1365-2966.2010.17068.x. 1005.4907 . 2010MNRAS.407.2399M . 118679872.
  3. Beifiori. A.. Sarzi. M.. Corsini. E. M.. Bontà. E. Dalla. Pizzella. A.. Coccato. L.. Bertola. F.. Upper Limits on the Masses of 105 Supermassive Black Holes from Hubble Space Telescope/Space Telescope Imaging Spectrograph Archival Data. The Astrophysical Journal. 10 February 2009. 692. 1. 856–868. 10.1088/0004-637X/692/1/856. 0809.5103 . 2009ApJ...692..856B . 54903233.
  4. Möllenhoff. C.. Heidt. J.. Surface photometry of spiral galaxies in NIR:Structural parameters of disks and bulges. Astronomy & Astrophysics. 15 March 2001. 368. 1. 16–37. 10.1051/0004-6361:20000335. 2001A&A...368...16M . free.
  5. Gutiérrez. Leonel. Erwin. Peter. Aladro. Rebeca. Beckman. John E.. The Outer Disks of Early-type Galaxies. II. Surface-brightness Profiles of Unbarred Galaxies and Trends with Hubble Type. The Astronomical Journal. 1 November 2011. 142. 5. 145. 10.1088/0004-6256/142/5/145. 1108.3662 . 2011AJ....142..145G . 118386795.
  6. Comerón. S.. Salo. H.. Laurikainen. E.. Knapen. J. H.. Buta. R. J.. Herrera-Endoqui. M.. Laine. J.. Holwerda. B. W.. Sheth. K.. Regan. M. W.. Hinz. J. L.. Muñoz-Mateos. J. C.. Gil de Paz. A.. Menéndez-Delmestre. K.. Seibert. M.. Mizusawa. T.. Kim. T.. Erroz-Ferrer. S.. Gadotti. D. A.. Athanassoula. E.. Lia Athanassoula. Bosma. A.. Ho. L. C.. ARRAKIS: atlas of resonance rings as known in the S4G. Astronomy & Astrophysics. 19 February 2014. 562. A121. 10.1051/0004-6361/201321633. 1312.0866 . 2014A&A...562A.121C . 119295831.
  7. Eskridge. Paul B.. Frogel. Jay A.. Pogge. Richard W.. Quillen. Alice C.. Berlind. Andreas A.. Davies. Roger L.. DePoy. D. L.. Gilbert. Karoline M.. Houdashelt. Mark L.. Kuchinski. Leslie E.. Ramirez. Solange V.. Sellgren. K.. Stutz. Amelia. Terndrup. Donald M.. Tiede. Glenn P.. Near-Infrared and Optical Morphology of Spiral Galaxies. The Astrophysical Journal Supplement Series. November 2002. 143. 1. 73–111. 10.1086/342340. astro-ph/0206320 . 2002ApJS..143...73E . 15491635.
  8. Web site: The Ursa Major Groups. www.atlasoftheuniverse.com.

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