Mayall's Object

{{Short description| Two colliding galaxies in the constellation of Ursa Major }}

{{Infobox Galaxy

| name = Mayall's Object

| image = Hubble Interacting Galaxy Arp 148 (2008-04-24).jpg

| image_size = 250px

| caption = A Hubble Space Telescope image of Mayall's Object

| credit = NASA, ESA, the Hubble Heritage (STScI/AURA)-ESA/Hubble Collaboration, and A. Evans (University of Virginia, Charlottesville/NRAO/Stony Brook University)

| epoch = J2000

| constellation name = Ursa Major

| ra = {{RA|11|03|53.892}}{{cite journal |doi=10.1086/498708 |last1=Skrutskie |first1=Michael F. |last2=Cutri |first2=Roc M. |last3=Stiening |first3=Rae |last4=Weinberg |first4=Martin D. |last5=Schneider |first5=Stephen E. |last6=Carpenter |first6=John M. |last7=Beichman |first7=Charles A. |last8=Capps |first8=Richard W. |last9=Chester |first9=Thomas |last10=Elias |first10=Jonathan H. |last11=Huchra |first11=John P. |last12=Liebert |first12=James W. |last13=Lonsdale |first13=Carol J. |last14=Monet |first14=David G. |last15=Price |first15=Stephan |last16=Seitzer |first16=Patrick |last17=Jarrett |first17=Thomas H. |last18=Kirkpatrick |first18=J. Davy |last19=Gizis |first19=John E. |last20=Howard |first20=Elizabeth V. |last21=Evans |first21=Tracey E. |last22=Fowler |first22=John W. |last23=Fullmer |first23=Linda |last24=Hurt |first24=Robert L. |last25=Light |first25=Robert M. |last26=Kopan |first26=Eugene L. |last27=Marsh |first27=Kenneth A. |last28=McCallon |first28=Howard L. |last29=Tam |first29=Robert |last30=Van Dyk |first30=Schuyler D. |last31=Wheelock |first31=Sherry L. |title=The Two Micron All Sky Survey (2MASS) |journal=The Astronomical Journal |date=1 February 2006 |volume=131 |issue=2 |pages=1163–1183 |bibcode=2006AJ....131.1163S |s2cid=18913331 |issn=0004-6256 |doi-access=free }}

| dec = {{DEC|+40|50|59.89}}

| z = 0.034524

| h_radial_v = 10171 km/s{{cite simbad|title=APG 148|accessdate=2021-02-03}}

| dist_ly = {{cvt|450|Mly|Mpc|lk=on}}

| type =

| appmag_v =

| size_v =

| notes =

| names = {{odlist|name=Arp 148|name3=VV 032|MCG=+07-23-019|name2=APG 148}}

}}

Mayall's Object (also classified under the Atlas of Peculiar Galaxies as Arp 148) is the result of two colliding galaxies located 500 million light years away within the constellation of Ursa Major. It was discovered by American astronomer Nicholas U. Mayall of the Lick Observatory on 13 March 1940, using the Crossley reflector.Smith, R. T.; [http://ads.ari.uni-heidelberg.de/full/1941PASP...53..187S The Radial Velocity of a Peculiar Nebula] {{Webarchive|url=https://web.archive.org/web/20191110120537/http://ads.ari.uni-heidelberg.de/full/1941PASP...53..187S |date=2019-11-10 }}; Publications of the Astronomical Society of the Pacific, Vol. 53, No. 313, p.187 {{bibcode|1941PASP...53..187S}} When first discovered, Mayall's Object was described as a peculiar nebula, shaped like a question mark. Originally theorized to represent a galaxy reacting with the intergalactic medium,Burbidge, E. Margaret The Strange Extragalactic Systems Mayall's Object and IC 883, Astrophysical Journal, vol. 140, p1619 it is now thought to represent the collision of two galaxies, resulting in a new object consisting of a ring-shaped galaxy with a tail emerging from it. It is thought that the collision between the two galaxies created a shockwave that initially drew matter into the center which then formed the ring.http://hubblesite.org/newscenter/archive/releases/2008/16/image/aa/ HubbleSite: Cosmic Collisions Galore!, April 24, 2008, accessed August 10, 2008

Arp 148 was imaged by the Hubble Space Telescope as part of a survey of what are thought to be colliding galaxies.{{Cite web|url=https://www.spacetelescope.org/images/heic0810ae/|title=Arp 148|last=|website=www.spacetelescope.org|language=en|access-date=2019-11-10}} The image was taken with Wide Field and Planetary Camera 2 instrument.{{Cite web|url=https://www.jpl.nasa.gov/spaceimages/details.php?id=PIA10385|title=Arp 148& - Mayall's Object|website=www.jpl.nasa.gov|access-date=2019-11-10}} It was released along with 59 other images of this type in 2008 for that space telescope's 18th anniversary.