M
Mike Irwin
Researcher at University of Cambridge
Publications - 768
Citations - 89530
Mike Irwin is an academic researcher from University of Cambridge. The author has contributed to research in topics: Galaxy & Milky Way. The author has an hindex of 136, co-authored 755 publications receiving 83262 citations. Previous affiliations of Mike Irwin include University of New South Wales & Lawrence Berkeley National Laboratory.
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Journal ArticleDOI
The Three-dimensional Structure of the M31 Satellite System; Strong Evidence for an Inhomogeneous Distribution of Satellites
Anthony R. Conn,Anthony R. Conn,Geraint F. Lewis,Rodrigo A. Ibata,Quentin A. Parker,Quentin A. Parker,Daniel B. Zucker,Daniel B. Zucker,Alan W. McConnachie,Nicolas F. Martin,Nicolas F. Martin,David Valls-Gabaud,Nial R. Tanvir,Mike Irwin,Annette M. N. Ferguson,Scott C. Chapman +15 more
TL;DR: In this article, the spatial structure of the M31 satellite system utilizing the distance distributions presented in a previous publication was investigated, and it was shown that the satellite distribution, when viewed as a whole, is no more planar than one would expect from a random distribution of equal size.
Journal ArticleDOI
Chemical composition of extremely metal-poor stars in the Sextans dwarf spheroidal galaxy
Wako Aoki,Nobuo Arimoto,Kozo Sadakane,Eline Tolstoy,Giuseppina Battaglia,Pascale Jablonka,Matthew Shetrone,B. Letarte,Mike Irwin,Vanessa Hill,P. François,Kim Venn,Francesca Primas,Amina Helmi,Andreas Kaufer,M. Tafelmeyer,Thomas Szeifert,Carine Babusiaux +17 more
TL;DR: In this paper, the chemical abundances of six extremely metal-poor stars in the Sextans dwarf spheroidal galaxy were determined based on high resolution spectroscopy (R=40 000) with the Subaru Telescope High Dispersion Spectrograph.
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The Discovery of Two Extremely Low Luminosity Milky Way Globular Clusters
Sergey E. Koposov,Sergey E. Koposov,J. T. A. de Jong,Vasily Belokurov,Hans-Walter Rix,Daniel B. Zucker,Nick Evans,G. F. Gilmore,Mike Irwin,Eric F. Bell +9 more
TL;DR: Koposov 1 and Koposov 2 were discovered in the Sloan Digital Sky Survey Data Release 5 and confirmed with deeper imaging at the Calar Alto Observatory as mentioned in this paper, where they are located at approximately 40-50 kpc and appear to have old stellar populations and luminosities of only MV − 1 mag.
Journal ArticleDOI
PAndAS’ CUBS: DISCOVERY OF TWO NEW DWARF GALAXIES IN THE SURROUNDINGS OF THE ANDROMEDA AND TRIANGULUM GALAXIES*
Nicolas F. Martin,Alan W. McConnachie,Mike Irwin,Lawrence M. Widrow,Annette M. N. Ferguson,Rodrigo A. Ibata,John Dubinski,Arif Babul,Scott C. Chapman,Mark A. Fardal,Geraint F. Lewis,Julio F. Navarro,R. Michael Rich +12 more
TL;DR: The discovery of two new dwarf galaxies, Andromeda XXI and Andromeda XXII, located in the surroundings of the Andromeda and Triangulum galaxies (M31 and M33) was reported in this paper.
Journal ArticleDOI
Inferring the Andromeda Galaxy's mass from its giant southern stream with Bayesian simulation sampling
Mark A. Fardal,Martin D. Weinberg,Arif Babul,Mike Irwin,Puragra Guhathakurta,Karoline M. Gilbert,Annette M. N. Ferguson,Rodrigo A. Ibata,Geraint F. Lewis,Nial R. Tanvir,Avon Huxor +10 more
TL;DR: In this paper, a Bayesian sampling of parameter space, where each sample uses an N-body simulation of a satellite disrupting in M31's potential, was used to estimate the virial mass of M31.