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A trio of new Local Group galaxies with extreme properties

McConnachie, Alan; Huxor, Avon; Martin, Nicolas; Irwin, Mike; Chapman, Scott; Fahlman, Gregory; Ferguson, Annette; Ibata, Rodrigo; Lewis, Geraint; Richer, Harvey; Tanvir, Nial (2008-12)

We report on the discovery of three new dwarf galaxies in the Local Group. These galaxies are found in new CFHT/MegaPrime g,i imaging of the south-western quadrant of M31, extending our extant survey area to include the ...

Do globular clusters possess Dark Matter halos? A case study in NGC 2419

Ibata, Rodrigo; Nipoti, Carlo; Sollima, Antonio; Bellazzini, Michele; Chapman, Scott; Dalessandro, Emanuele (2012-10-29)

We use recently published measurements of the kinematics, surface brightness and stellar mass-to-light ratio of the globular cluster NGC 2419 to examine the possibility that this Galactic halo satellite is embedded in a ...

Radio imaging of the Subaru/XMM-Newton Deep Field - III. Evolution of the radio luminosity function beyond z=1

Simpson, Chris; Rawlings, Steve; Ivision, Rob; Akiyama, Masayuki; Almaini, Omar; Bradshaw, Emma; Chapman, Scott; Chuter, Rob; Croom, Scott; Dunlop, Jim; Foucaud, Sebastien; Hartley, Will (2012-01-16)

We present spectroscopic and eleven-band photometric redshifts for galaxies in the 100-uJy Subaru/XMM-Newton Deep Field radio source sample. We find good agreement between our redshift distribution and that predicted by ...

Draco, a flawless dwarf galaxy

Segall, Mathieu; Ibata, Rodrigo; Irwin, Michael; Martin, Nicolas; Chapman, Scott (2007-03-01)

The Draco dwarf spheroidal galaxy (dSph), with its apparent immense mass to light ratio and compact size, holds many clues to the nature of the enigmatic dark matter. Here we present deep photometric studies of this dwarf ...

Evidence for an accretion origin for the outer halo globular cluster system of M31

Mackey, Dougal; Huxor, Avon; Ferguson, Annette; Irwin, Mike; Tanvir, Nial; McConnachie, Alan; Ibata, Rodrigo; Chapman, Scott; Lewis, Geraint (2010-05-20)

We use a sample of newly-discovered globular clusters from the Pan-Andromeda Archaeological Survey (PAndAS) in combination with previously-catalogued objects to map the spatial distribution of globular clusters in the M31 ...

Rest-frame optical and far-infrared observations of extremely bright Lyman-break galaxy candidates at z ~ 2.5

Ivison, Rob; Smail, Ian; Bentz, Misty; Stevens, Jason; Menendez-Delmestre, Karin; Chapman, Scott; Blain, Andrew (2005-09)

We have investigated the rest-frame optical and far-infrared properties of a sample of extremely bright candidate Lyman-break galaxies (LBG) identified in the Sloan Digital Sky Survey. Their high ultraviolet luminosities ...

Density Variations in the NW Star Stream of M31

Carlberg, R. G.; Richer, Harvey B.; McConnachie, Alan W.; Irwin, Mike; Ibata, Rodrigo A.; Dotter, Aaron L.; Chapman, Scott; Fardal, Mark; Ferguson, A. M. N.; Lewis, G. F.; Navarro, Julio F.; Puzia, Thomas H.; Valls-Gabaud, David (2011-02-17)

The Pan Andromeda Archeological Survey (PAndAS) CFHT Megaprime survey of the M31-M33 system has found a star stream which extends about 120 kpc NW from the center of M31. The great length of the stream, and the likelihood ...

An ALMA survey of submillimetre galaxies in the Extended Chandra Deep Field South: High resolution 870um source counts

Karim, Alexander; Swinbank, Mark; Hodge, Jackie; Smail, Ian; Walter, Fabian; Biggs, Andy; Simpson, James; Danielson, Alice; Alexander, David; Bertoldi, Frank; de Breuck, Carlos; Chapman, Scott; Coppin, Kristen; Dannerbauer, Helmut; Edge, Alastair; Greve, Thomas; Ivison, Rob; Knudsen, Kirsten; Menten, Karl; Schinnerer, Eva; Wardlow, Julie; Weiß, Axel; van der Werf, Paul (2013-04-16)

We report the first counts of faint submillimetre galaxies (SMG) in the 870-um band derived from arcsecond resolution observations with the Atacama Large Millimeter Array (ALMA). We have used ALMA to map a sample of 122 ...

An ALMA survey of Sub-millimetre Galaxies in the Extended Chandra Deep Field South: Detection of [C II] at z=4.4

Swinbank, Mark; Karim, Alexander; Smail, Ian; Hodge, Jackie; Walter, Fabian; Bertoldi, Frank; Biggs, Andy; De Breuck, Carlos; Chapman, Scott; Coppin, Kristen; Cox, Pierre; Danielson, Alice; Dannerbauer, Helmut; Ivison, Rob; Greve, Thomas; Knudsen, Kirsten; Menten, Karl; Simpson, James; Schinnerer, Eva; Wardlow, Julie; Weiss, Axel; van der Werf, Paul (2012-09-06)

We present ALMA 870-um (345GHz) observations of two sub-millimetre galaxies (SMGs) drawn from an ALMA study of the 126 sub-millimeter sources from the LABOCA Extended Chandra Deep Field South Survey (LESS). The ALMA data ...

PAndAS' cubs: discovery of two new dwarf galaxies in the surroundings of the Andromeda and Triangulum galaxies

Martin, Nicolas F.; McConnachie, Alan W.; Irwin, Mike; Widrow, Lawrence M.; Ferguson, Annette M. N.; Ibata, Rodrigo A.; Dubinski, John; Babul, Arif; Chapman, Scott; Fardal, Mark; Lewis, Geraint F.; Navarro, Julio; Rich, R. Michael (2009-09-02)

We present 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). These discoveries stem from the first year data of ...