Messier 95

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search

Template:Short description Script error: No such module "redirect hatnote". Template:Use dmy dates Template:Infobox Galaxy

Messier 95, also known as M95 or NGC 3351, is a barred spiral galaxy about 33 million light-years away in the zodiac constellation Leo. It was discovered by Pierre Méchain in 1781, and catalogued by compatriot Charles Messier four days later. In 2012 its most recent supernova was discovered.

The galaxy has a morphological classification of SB(r)b,[1] with the SBb notation indicating it is a barred spiral with arms that are intermediate on the scale from tightly to loosely wound, and an "(r)" meaning an inner ring surrounds the bar.[2] The latter is a ring-shaped, circumnuclear star-forming region with a diameter of approximately Script error: No such module "convert"..[3] The spiral structure extends outward from the ring.[2]

Its ring structure is about Template:Solar mass (solar masses) in molecular gas and yields a star formation rate of Template:Solar mass yr−1.Template:Efn The star formation is occurring in at least five regions with diameters between 100 and 150 pc that are composed of several star clusters ranging in size from 1.7 to 4.9 pc. These individual clusters contain Script error: No such module "val".Template:Efn of stars, and may be on the path to forming globular clusters.[4]

M95 is one of several galaxies within the M96 Group, a group of galaxies in the constellation Leo, the other Messier objects of which are M96 and M105.[5][6][7][8]

Supernova

One supernova has been observed in M95:

  • SN 2012aw (TypeScript error: No such module "String".II-P, mag. 15) was discovered by Paolo Fagotti and independently by Jure Skvarc on 16 March 2012.[9][10][11][12] The light curve of this displayed great flattening after 27 days, thus classifying it as a Type II-P, or "plateau", core-collapse supernova.[13] The disappearance of the progenitor star was later confirmed from near-infrared imaging of the region. The brightness from the presumed red supergiant progenitor allowed its mass to be estimated as Script error: No such module "val"..[14]
File:Caught in the act Messier 95.tif
Optical and radio information are combined in this image of M95, showing the process of " stellar feedback", redistributing energy into the interstellar medium causing star-forming (blue area).[15]
File:NGC 3351 (weic2403m).jpg
Image of M95 taken by James Webb's MIRI and NIRCam instruments.

See also

References

<templatestyles src="Reflist/styles.css" />

  1. ↑ Cite error: Script error: No such module "Namespace detect".Script error: No such module "Namespace detect".
  2. ↑ a b Script error: No such module "citation/CS1".
  3. ↑ Script error: No such module "Citation/CS1".
  4. ↑ Script error: No such module "citation/CS1".
  5. ↑ Script error: No such module "citation/CS1".
  6. ↑ Script error: No such module "Citation/CS1".
  7. ↑ Script error: No such module "Citation/CS1".
  8. ↑ Script error: No such module "Citation/CS1".
  9. ↑ Script error: No such module "Citation/CS1".
  10. ↑ Script error: No such module "citation/CS1".
  11. ↑ Script error: No such module "citation/CS1".
  12. ↑ Script error: No such module "citation/CS1".
  13. ↑ Script error: No such module "citation/CS1".
  14. ↑ Script error: No such module "citation/CS1".
  15. ↑ Script error: No such module "citation/CS1".

Script error: No such module "Check for unknown parameters".

Template:Notelist

External links

Template:Sister project

Template:Sky Template:Portal bar Template:Messier objects Template:Ngc35

Retrieved from "http://debianws.lexgopc.com/wiki143/index.php?title=Messier_95&oldid=5373273"