M32p

















M32p
Observation data

Group or cluster
 Local Group
Characteristics
Mass
7010250000000000000♠2.5×1010 M☉
See also: Galaxy, List of galaxies

M32p is a hypothesized former galaxy that was incorporated into the Andromeda Galaxy. It was a sister galaxy to the Milky Way and Andromeda galaxies, previously the third largest galaxy in the Local Group, and was merged into the larger Andromeda Galaxy an estimated 2 billion years ago.[1] The merger is thought to have created the thick disc and contributed the majority of the halo stars of Andromeda and caused its burst of star formation at the time of the merger. The former galaxy may be associated with the Andromeda satellite galaxy Messier 32 (M32), which may be the remains of its dense core. M32's unusual characteristics of dense compactness and burst of star formation 2 billion years ago would be explained by this theory as a remnant of an earlier large galaxy, given its unlikeness to other similarly sized elliptical galaxies.[2]


It was described in 2018 by scientists at the University of Michigan. It is thought to have been 2.5×1010M☉ in size.[3]



See also



  • Sausage Galaxy, cause for the Milky Way's thick disc and many halo stars.


References





  1. ^ Mike Wall (23 July 2018). "The Milky Way Had a Big Sibling Long Ago — And Andromeda Ate It". Space.com..mw-parser-output cite.citation{font-style:inherit}.mw-parser-output .citation q{quotes:"""""""'""'"}.mw-parser-output .citation .cs1-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .citation .cs1-lock-limited a,.mw-parser-output .citation .cs1-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .citation .cs1-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration{color:#555}.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration span{border-bottom:1px dotted;cursor:help}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Wikisource-logo.svg/12px-Wikisource-logo.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output code.cs1-code{color:inherit;background:inherit;border:inherit;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;font-size:100%}.mw-parser-output .cs1-visible-error{font-size:100%}.mw-parser-output .cs1-maint{display:none;color:#33aa33;margin-left:0.3em}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-format{font-size:95%}.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-right{padding-right:0.2em}


  2. ^ "The Milky Way's long-lost sibling finally found". Science Daily. 23 July 2018.


  3. ^ d'Souza, Richard; Bell, Eric F (2018). "The Andromeda galaxy's most important merger about 2 billion years ago as M32's likely progenitor". Nature Astronomy. arXiv:1807.08819. doi:10.1038/s41550-018-0533-x.




Further reading




  • d'Souza, Richard; Bell, Eric F (2018). "The Andromeda galaxy's most important merger about 2 billion years ago as M32's likely progenitor". Nature Astronomy. arXiv:1807.08819. doi:10.1038/s41550-018-0533-x.


  • Hammer, F.; Yang, Y. B.; Wang, J. L.; Ibata, R.; Flores, H.; Puech, M. (April 2018). "A 2-3 billion year old major merger paradigm for the Andromeda galaxy and its outskirts". Monthly Notices of the Royal Astronomical Society. 475 (2): 2754–2767. arXiv:1801.04279. Bibcode:2018MNRAS.475.2754H. doi:10.1093/mnras/stx3343.










-

Popular posts from this blog

Lambaréné

Image
Place in Moyen-Ogooué, Gabon Lambaréné Street in Lambaréné Lambaréné Location in Gabon Coordinates: 0°41′18″S 10°13′55″E  /  0.68833°S 10.23194°E  / -0.68833; 10.23194 Coordinates: 0°41′18″S 10°13′55″E  /  0.68833°S 10.23194°E  / -0.68833; 10.23194 Country   Gabon Province Moyen-Ogooué Population (2013 census)  • Total 38,775 Lambaréné is a town and the capital of Moyen-Ogooué in Gabon. With a population of 38,775 as of 2013, it is located 75 kilometres south of the equator. Lambaréné is based in the Central African Rainforest at the river Ogooué. This river divides the city into 3 districts: Rive Gauche, Ile Lambaréné and Rive Droite. The Albert Schweitzer Hospital and the districts Adouma and Abongo are located on Rive Droite. The districts Atongowanga, Sahoty, Dakar, Grand Village, Château, Lalala and Bordamur build the Ile Lambaréné. The majority of the people in Lambaréné live in the district Isaac located on Rive Gauche. This distr
Read more

Chris Pine

Image
Not to be confused with Christopher Pyne or Chris Pyne. Chris Pine Pine in 2018 Born Christopher Whitelaw Pine ( 1980-08-26 ) August 26, 1980 (age 38) Los Angeles, California, U.S. Alma mater UC Berkeley Occupation Actor Years active 2003–present Parent(s) Robert Pine Gwynne Gilford Relatives Anne Gwynne (grandmother) Christopher Whitelaw Pine (born August 26, 1980) [1] [2] is an American actor. Pine made his feature debut as Lord Devereaux in The Princess Diaries 2: Royal Engagement (2004). He is known for playing James T. Kirk in the Star Trek reboot film series (2009–2016), Will in Unstoppable (2010), Cinderella's Prince in Into the Woods (2014), Jack Ryan in Jack Ryan: Shadow Recruit (2014), Toby Howard in Hell or High Water (2016), Bernie Webber in The Finest Hours (2016), Steve Trevor in Wonder Woman (2017), and Dr. Alexander Murry in A Wrinkle in Time (2018). Contents 1 Early life 2 Career 2.1 2003–200
Read more

Kashihara Line

Image
Kashihara Line   B   A Kashihara Line train passing Yakushi-ji temple Overview Native name 橿原線 Type Commuter rail System Kintetsu Railway Locale Nara, Nara, Japan Yamtokoriyama, Nara, Japan Tenri, Nara, Japan Kawanishi, Nara, Japan Miyake, Nara, Japan Tawaramoto, Nara, Japan Kashihara , Nara, Japan Termini Yamato-Saidaiji Kashiharajingu-mae Stations 17 Operation Opened April 1, 1921 ; 98 years ago  ( 1921-04-01 ) Owner Kintetsu Railway Character Commuter rail Technical Line length 23.8 km (14.8 mi) Track gauge 1,435 mm ( 4 ft  8   1 ⁄ 2  in ) Minimum radius 240 m Electrification 1,500 V DC Overhead lines Operating speed 100 km/h (60 mph) [1] The Kashihara Line ( 橿原線 , Kashihara-sen ) is a 23.8 km (14.8 mi) north-south bound railway line in Nara Prefecture, Japan, owned and operated by the Kintetsu Railway, a private railway operator. It connects Yamato-Saidaiji Station and Kashiharajingu
Read more