Willman 1: An Extreme Case of ... What?

Details Willman 1: An Extreme Case of ... What? Willman 1: An Extreme Case of ... What?

Jan 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21545701g&link_type=abstract

American Astronomical Society, AAS Meeting #215, #457.01; Bulletin of the American Astronomical Society, Vol. 42, p.480

Astronomy and Astrophysics

Astronomy

Scientific paper

Discovered in 2005, the enigmatic Willman 1 object is an ultra-faint Galactic satellite (L < 1000 Lsun), debated to be either a globular cluster or a dark-matter-dominated dwarf galaxy. Here we present new photometric measurements of its structure, analyzing the spatial distribution of the object and searching for signs of tidal disturbance. We use a maximum-likelihood technique to estimate Willman 1's physical properties and present its star formation history, derived using StarFISH.

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