Roche, Nathan, Bernardi, Mariangela, Hyde, Joseph
We examine the colour-magnitude relation of approximately 5000 Brightest Cluster Galaxies (BCGs) in the Sloan Digital Sky Survey, and compare with non-BCG E/S0 galaxies. The colour-magnitude and...
Roche, Nathan, Bernardi, Mariangela, Hyde, Joseph
We select a sample of 70378 E/S0 (early-type) galaxies at 0
Menanteau, Felipe, Hughes, John P., Jimenez, Raul, Hernandez-Monteagudo, Carlos, Verde, Licia, Kosowsky, Arthur, ...
Menanteau, Felipe, Hughes, John P., Jimenez, Raul, Hernandez-Monteagudo, Carlos, Verde, Licia, Kosowsky, Arthur, ...
We present first results from the Southern Cosmology Survey, a new multiwavelength survey of the southern sky coordinated with the Atacama Cosmology Telescope (ACT), a recently commissioned...
We investigate Arp 295, a pair of interacting spirals at z=0.023. We measure scalelengths 5.24 kpc for Arp 295a and 2.52 kpc for 295b. There is a much smaller Im galaxy associated with the larger...
Imaging and Spectroscopy of Arp 104: A Post-starburst Interacting Pair with Cross-Fuelling? (2006)
We perform UBR imaging and optical spectroscopy of the interacting galaxy pair Arp 104, at z=0.0098. This consists of NGC5218, a disturbed Sb barred spiral with an inclined outer shell, the round...
Roche, Nathan, Dunlop, James, Caputi, Karina, McLure, Ross, Willott, Chris, Crampton, David
We have performed a deep spectroscopic survey of extremely red galaxies on the GOODS-South field, using GMOS on Gemini South. We present here spectra and redshifts for 16 ERGs at 0.87
Roche, Nathan, Dunlop, James, Almaini, Omar
We identify a deep sample of 198 extremely red objects (EROs) in (50.4 sq. arcmin of) the Chandra Deep Field South, selected as I-K>3.92 galaxies to a limit K=22. The ERO number counts remain well...
The Morphology of 9 Radio-selected Faint Galaxies from deep HST Imaging (2002)
Roche, Nathan, Lowenthal, James, Koo, David
Using the HST WFPC2 we perform deep I-band imaging of 9 radio-selected (limit 14 microJanskys at 8.5 GHz) faint galaxies from Roche, Lowenthal and Koo (2002). Two are also observed in V. Six of the...
Ivison, Rob, Greve, Thomas, Smail, Ian, Dunlop, James, Roche, Nathan, Scott, Susie, ...
The SCUBA 8-mJy survey is the largest submm extragalactic mapping survey undertaken to date, centred on the Lockman Hole and ELAIS N2 regions. Here, we present new 1.4-GHz imaging of the depth and...
The Clustering, Number Counts and Morphology of Extremely Red (R-K>5) Galaxies to K=21 (2002)
Roche, Nathan, Almaini, Omar, Dunlop, James, Ivison, R. J., Willott, Chris
We investigate the number counts, clustering, morphology and radio/X-ray emission of extremely red objects (EROs), defined as galaxies with R-K>5.0. This criterion will select old, passive...
Keck Spectroscopy and Imaging of Faint Galaxies Identified as MicroJansky Radio Sources (2001)
Roche, Nathan, Lowenthal, James, Koo, David
We investigate the nature of the faintest radio sources detected in 3 VLA surveys, to faint limits 8 microJy at 8.5 GHz. Using the Keck Low Resolution Imaging Spectrograph in BRI and the Near Infra...
Lyman-alpha Imaging of a Very Luminous z=2.3 Starburst Galaxy with WFPC2 (2000)
Roche, Nathan, Lowenthal, James, Woodgate, Bruce
We investigate a very luminous Lyman-alpha emitting galaxy, associated with a z=2.3 damped absorption system in the spectrum of the QSO PHL 957. The galaxy was observed with the HST WFPC2, through a...
Modelling ISO Galaxy Counts with Luminosity and Merger Rate Evolution (1998)
We model galaxy evolution in the 6.75 and 15 micron passbands of the ISO satellite, by combining models of galaxy evolution at optical wavelengths (which are consistent with the optical galaxy...
The Angular Correlation Function of K=19.5 Galaxies and the Detection of a Cluster at z=0.775 (1998)
Roche, Nathan, Eales, Steve, Hippelein, Hans, Willott, Chris
On five K-band Omega camera images, covering a total of 162.2 sq. arcmin to K=19.5, we investigate (i) the clustering environment of 5 radio galaxies at 0.7
The Angular Correlation Function and Hierarchical Moments of 70000 Faint Galaxies to R=23.5 (1998)
We investigate the angular correlation function, omega(theta), and third and fourth-order hierarchical moments of a survey with approx. 70000 faint galaxies detected on a total area 1.74 sq. deg. to...
The Clustering of K\sim 20 Galaxies on 17 Radio Galaxy Fields (1997)
Roche, Nathan, Eales, Stephen, Hippelein, Hans
We investigate the angular correlation function, $\omega(\theta)$, of the galaxi es detected in the K-band on 17 fields (101.5 square arcmin in total), each containing a $z\sim 1.1$ radio galaxy....
Morphology and Surface Brightness Evolution of z\sim1.1 Radio Galaxies (1997)
Roche, Nathan, Eales, Stephen, Rawlings, Steve
We use $K-band imaging to investigate the angular size and morphology of 10 6C radio galaxies, at redshifts $1\leq z\leq 1.4$. Two appear to be undergoing mergers, another contains two intensity...
A deep ROSAT Survey - XII. The X-ray spectra of faint ROSAT sources (1996)
Almaini, Omar, Shanks, Tom, Boyle, Brian J., Griffiths, Richard E., Roche, Nathan, Stewart, Gordon C., ...
Optical spectroscopy has enabled us to identify the optical counterparts to over 200 faint X-ray sources to a flux limit of S_(0.5-2keV)=4x10^-15 erg s^-1 cm^-2 on 5 deep ROSAT fields. Here we...
The clustering and X-ray properties of faint galaxies. (1994)
Thesis (Ph. D.)--University of Durham, 1994.