Willman 1

Infobox Galaxy


name = Willman 1
epoch = J2000
type = extreme dSph or
unusual globular clusterHarv|Willman|Blanton|West|Dalcanton|2005]
ra = RA|10|49|22.3
dec = DEC|+51|03|03.6
dist_ly = 120 ± 20 kly (38 ± 7 kpc)Harv|Willman|Masjedi|Hogg|Dalcanton|2006]
z =
appmag_v = 15.4 ± 0.4Ref_label|A|a|none
size_v =
constellation name = Ursa Major
notes =
names = SDSS J1049+5103

Willman 1 or SDSS J1049+5103 is an extreme globular cluster or ultra low-mass dwarf galaxyHarv|NED|2007] discovered by a team lead by Beth Willman of New York University, using Sloan Digital Sky Survey data. As of 2006, it is the third dimmest galaxy known, after Boo dSph and UMa dSph, 200 times dimmer than the next dimmest. The galaxy is a satellite of the Milky Way; ~120,000 light-years away. It has an absolute magnitude of -2.5. The luminosity function varies between the center and the tails which suggest mass segregation similar to that found in Palomar 5.

Notes

  1. Note_label|A|a|none15.4 ± 0.4 apparent magnitude - 5 * (log10(38 ± 7 kpc distance) - 1) = -2.5 absolute magnitude

References


* Harvard reference
Surname1 = NED
Title = Results for SDSS J1049+5103
Authorlink = NASA/IPAC Extragalactic Database
Journal = NASA/IPAC Extragalactic Database
Year = 2007
date= January 9 2007
Publisher = Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration
URL = http://nedwww.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=SDSS+J1049%2B5103

* Harvard reference
Surname1 = Willman
Given1 = Beth
Surname2 = Blanton
Given2 = Michael R.
Surname3 = West
Given3 = Andrew A.
Surname4 = Dalcanton
Given4 = Julianne J.
Surname5 = Hogg
Given5 = David W.
Surname6 = Schneider
Given6 = Donald P.
Surname7 = Wherry
Given7 = Nicholas
Surname8 = Yanny
Given8 = Brian
Surname9 = Brinkmann
Given9 = Jon
Title = A New Milky Way Companion: Unusual Globular Cluster or Extreme Dwarf Satellite?
Journal = The Astronomical Journal
Year = 2005
Volume = 129
Issue = 6
Pages = 2692-2700
URL = http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=2005AAS...207.9101W

* Harvard reference
Surname1 = Willman
Given1 = Beth
Surname2 = Masjedi
Given2 = Morad
Surname3 = Hogg
Given3 = David W.
Surname4 = Dalcanton
Given4 = Julianne J.
Surname5 = Martinez-Delgado
Given5 = David
Surname6 = Blanton
Given6 = Michael
Surname7 = West
Given7 = Andrew A.
Surname8 = Dotter
Given8 = Aaron
Surname9 = Chaboyer
Given9 = Brian
Title = Willman 1 - A Galactic Satellite at 40 kpc With Multiple Stellar Tails
Journal = The Astronomical Journal
Year = 2006
date= March 2006
Volume = subject to acceptance
Issue =
Pages =
URL = http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=2006astro.ph..3486W

Wikimedia Foundation. 2010.

Look at other dictionaries:

  • Willman — is a surname, and may refer to:*Beth Willman (contemporary), American astronomer *Bradley Willman (b. 1980), Canadian anti pedophile activist *David Willman (b. 1956), American Pulitzer prize winning journalist *Noel Willman (1918–1988), British… …   Wikipedia

  • Willman — This is a very old surname. Recent research suggests, although without absolute proof, that the name originated in the Yorkshire region, although why this should be so is unclear. It almost certainly derives from the prominence of the surname… …   Surnames reference

  • Bradley Willman — Infobox Person image size = 150px name= Bradley Willman |caption= birth date= 1980 birth place= flagicon|Canada Langley, British Columbia dead= death date= death place= occupation= Private investigator spouse=Bradley Willman (1980–) is an anti… …   Wikipedia

  • Dale Willman — (born October 1956 in Jamestown, New York) is an award winning American journalist and was a 2010 2011 Fulbright Program grantee. He is the Executive Editor for Fieldnotes Productions, a non profit organization dedicated to producing contextual… …   Wikipedia

  • David Willman — (born October 18, 1956 in Pasadena, California) is a Pulitzer Prize winning investigative journalist. Life He graduated from San Jose State University with a B.A. in Journalism in 1978.[1] His work has prompted major public reforms, including a… …   Wikipedia

  • Beth Willman — is an American astronomer at the Harvard Smithsonian Center for Astrophysics. Working with Sloan Digital Sky Survey data, she and her team have discovered two Milky Way satellites so far, SDSSJ1049+5103 (known commonly as Willman 1 ) and UMa dSph …   Wikipedia

  • Noel Willman — Born August 4, 1918 Derry, Ireland Died December 14, 1988 (aged 70) New York City, New York, United States Occupation Theatre director, actor Noel Willman (August 4, 1918 in Derry …   Wikipedia

  • Tony Willman — (20 February 1907 West Allis, Wisconsin ndash; 12 October 1941 Thompson, Connecticut) was an American racecar driver. He was killed in a midget car accident.Career awards*He was inducted in the National Sprint Car Hall of Fame in 1992.Indy 500… …   Wikipedia

  • ВИЛЬМАН — (Willman), Пер Андерс Юганн, род. 22 июля 1834 в Стокгольме, в 1857–77 первый бас стокгольмской оперы (ученик Дюпре в Париже); затем директор театральной школы и королевских театров (1883–88) …   Музыкальный словарь Римана

  • Green Apple Quick Step — Infobox musical artist Name = Green Apple Quick Step Img capt = Img size = Landscape = Background = group or band Alias = Origin = Seattle, Washington, United States Genre = Hard rock Post grunge Alternative rock Years active = Label = Medicine… …   Wikipedia


Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.