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 detection of an extended moving group near the galactic disk
TL;DR: A radial velocity survey for 879 field stars in the direction (l, b)=(277°, 9°) has been undertaken with the bench-mounted spectrograph, ARGUS, and echelle grating at the CTIO 4.0 m telescope.
Journal ArticleDOI
Zero-metallicity hypernova uncovered by an ultra metal-poor star in the Sculptor dwarf spheroidal galaxy
Á. Skúladóttir,Á. Skúladóttir,Stefania Salvadori,Stefania Salvadori,Anish M. Amarsi,Eline Tolstoy,Mike Irwin,Vanessa Hill,Pascale Jablonka,Pascale Jablonka,Giuseppina Battaglia,Giuseppina Battaglia,Else Starkenburg,Davide Massari,Davide Massari,Amina Helmi,Lorenzo Posti +16 more
TL;DR: In the Sculptor dwarf spheroidal galaxy, AS0039 as mentioned in this paper is the most metal-poor star so far discovered in any external galaxy, with [Fe/H]${\rm LTE}=-4.11, making it the lowest detected carbon abundance in any star to date.
Journal ArticleDOI
Discrete Classification with Principal Component Analysis: Discrimination of Giant and Dwarf Spectra in K Stars
Rodrigo A. Ibata,Mike Irwin +1 more
TL;DR: In this paper, the authors demonstrate the use of a variant of Principal Component Analysis (PCA) for discrimination problems in astronomy, and demonstrate that the proposed method is robust to signal to noise (S/N) degradation.
Proceedings ArticleDOI
Integration and early testing of WEAVE: the next-generation spectroscopy facility for the William Herschel Telescope
Gavin Dalton,Scott Trager,Don Carlos Abrams,Piercarlo Bonifacio,J. Alfonso L. Aguerri,Antonella Vallenari,Georgia Bishop,Kevin Middleton,Chris Benn,Kevin Dee,S. Mignot,Ian Lewis,J. Pragt,Sergio Picó,Nicholas A. Walton,Juerg Rey,Carlos Allende Prieto,Emilie Lhomé,Marc Balcells,David Terrett,Matthew Brock,Andy Ridings,Jure Skvarč,Marc Verheijen,Iain A. Steele,Remko Stuik,Gabby Kroes,N. Tromp,Jan Kragt,Dirk Lesman,C. J. Mottram,S. D. Bates,Frank Gribbin,José Alonso Burgal,José Miguel Herreros,Jose Miguel Delgado,Carlos Martin,Diego Cano,Ramón Navarro,Mike Irwin,Luis Peralta de Arriba,Neil O'Mahoney,Andrea Bianco,Alireza Moleinezhad,Alireza Moleinezhad,Rik ter Horst,Emilio Molinari,Marcello Lodi,José Guerra,Andrea Baruffalo,Esperanza Carrasco,Szigfrid Farcas,Ellen Schallig,Sarah Hughes,Vanessa Hill,Daniel J. Smith,Janet E. Drew,Bianca M. Poggianti,Angela Iovino,Mat Pieri,Shoko Jin,Lillian Dominguez Palmero,C. Fariña,Adrian Martin,Clare Worley,David Murphy,S. Guest,Huw R. Morris,Eddy Elswijk,Menno de Haan,H. Hanenburg,Bernardo Salasnich,D. Mayya,Rafael Izazaga-Pérez,E. Gafton,Elisabetta Caffau,D. Horville,Francisco Paz Chinchón,Jesus Falcon-Barosso,Boris T. Gänsicke,Jose San Juan,N. Hernandez +81 more
TL;DR: An update on the overall integration progress of the WEAVE next-generation spectroscopy facility for the William Herschel Telescope (WHT), now planned for first light in mid-2020, is presented, with components now arriving at the observatory.
Journal ArticleDOI
An Automated Survey for Gravitational Lenses
TL;DR: In this paper, a new optical technique for surveying large numbers of quasars for evidence of gravitational lensing is described, which is effective for separations greater than about two arcseconds, and allows the probability of detecting a lens of specified magnitude, component magnitude difference and component separation to be precisely calculated.