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
Sagittarius: the nearest dwarf galaxy
TL;DR: The Sagittarius satellite galaxy as mentioned in this paper is the closest known satellite galaxy to the Milky Way and is comparable in size and luminosity to the largest dwarf spheroidal, has a well populated red horizontal branch with a blue HB extension; a substantial carbon star population; and a strong intermediate age stellar component with evidence of a metallicity spread.
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The DART Imaging And CaT Survey of the Fornax Dwarf Spheroidal Galaxy
Giuseppina Battaglia,Eline Tolstoy,Amina Helmi,Mike Irwin,B. Letarte,Pascale Jablonka,Vanessa Hill,Kim Venn,Matthew Shetrone,Nobuo Arimoto,Francesca Primas,Andreas Kaufer,Patrick Francois,Thomas Szeifert,Tom Abel,Kozo Sadakane +15 more
TL;DR: In this article, the structural parameters of the Fornax dwarf spheroidal galaxy were derived using wide field imaging covering the galaxy out to its tidal radius, and the spatial distribution of the stars of different ages as selected from colour-magnitude diagram analysis.
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Discovery of an unusual dwarf galaxy in the outskirts of the Milky Way
Mike Irwin,Vasily Belokurov,Nick Evans,Emma V. Ryan-Weber,J. T. A. de Jong,Sergey E. Koposov,Daniel B. Zucker,Simon Hodgkin,G. F. Gilmore,P. Prema,Leslie Hebb,Ayesha Begum,Michael Fellhauer,P. C. Hewett,R. C. Kennicutt,Mark I. Wilkinson,D. M. Bramich,S. Vidrih,Hans-Walter Rix,Timothy C. Beers,J. C. Barentine,Howard Brewington,M. Harvanek,Jurek Krzesinski,Jurek Krzesinski,Dan Long,Atsuko Nitta,Stephanie A. Snedden +27 more
TL;DR: The discovery of a new dwarf galaxy, Leo T, in the Local Group was reported in this paper, which is the smallest, lowest luminosity galaxy found to date with recent star formation.
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Two distinct ancient components in the Sculptor Dwarf Spheroidal Galaxy: First Results from DART
Eline Tolstoy,Mike Irwin,Amina Helmi,Giuseppina Battaglia,P. Jablonka,V. Hill,K. A. Venn,Matthew Shetrone,B. Letarte,Andrew A. Cole,Francesca Primas,P. Francois,Nobuo Arimoto,Kozo Sadakane,Andreas Kaufer,Thomas Szeifert,Tom Abel +16 more
TL;DR: In this paper, the authors used the ESO Wide Field Imager (WFI) in conjunction with the VLT/FLAMES spectrograph to study the properties of the resolved stellar population of Sculptor out to and beyond the tidal radius.
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A curious new milky way satellite in ursa major 0
Daniel B. Zucker,Vasily Belokurov,Nick Evans,Jan T. Kleyna,Mike Irwin,Mark I. Wilkinson,Michael Fellhauer,D. M. Bramich,Gerry Gilmore,B. Yanny,J. A. Smith,J. A. Smith,Paul C. Hewett,Eric F. Bell,Oleg Y. Gnedin,S. Vidrih,R. F. G. Wyse,Beth Willman +17 more
TL;DR: In this article, a localized stellar overdensity in t he constellation of Ursa Major, first identified in Sloan Digital Sky Survey (SDSS) data and subsequently followed up with Subaru imaging was studied.