Constraints on Star Forming Galaxies at z> 6.5 from HAWK-I Y-band Imaging of GOODS-South (2009)
Hickey, Samantha, Bunker, Andrew, Jarvis, Matt J., Chiu, Kuenley, Bonfield, David
We present the results of our search for high-redshift Lyman-break galaxies over the GOODS-South field. We use HST-ACS data in B, V, i' & z', VLT-ISAAC J and Ks, Spitzer-IRAC 3.6, 4.5, 5.8 and 8.0...
Bunker, Andrew, Wilkins, Stephen, Ellis, Richard, Stark, Daniel, Lorenzoni, Silvio, Chiu, Kuenley, ...
We have searched for star-forming galaxies at z~7 by applying the Lyman-break technique to newly-released 1.1micron Y-band images from WFC3 on HST. By comparing these images of the Hubble Ultra Deep...
Galaxies at High Redshift and Reionization (2009)
Bunker, Andrew, Stanway, Elizabeth, Ellis, Richard, Lacy, Mark, McMahon, Richard, Eyles, Laurence, ...
The quest to discover the most distant galaxies has developed rapidly in the last decade. We are now exploring redshifts of 6 and beyond, when the Universe was less than a billion years old, an epoch...
GRB 090426: The Environment of a Rest-Frame 0.35-second Gamma-Ray Burst at Redshift z=2.609 (2009)
Levesque, Emily M., Bloom, Joshua S., Butler, Nathaniel R., Perley, Daniel A., Cenko, S. Bradley, Prochaska, J. Xavier, ...
We present the discovery of an absorption-line redshift of z = 2.609 for GRB 090426, establishing the first firm lower limit to a redshift for a gamma-ray burst with an observed duration of 90%...
Stark, Daniel P., Ellis, Richard S., Bunker, Andrew, Bundy, Kevin, Targett, Tom, Benson, Andrew, ...
We present new measurements of the evolution in the Lyman break galaxy (LBG) population between z ≃ 4 and z ≃ 6. By utilizing the extensive multiwavelength data sets available in the GOODS...
Stark, Daniel P., Ellis, Richard S., Bunker, Andrew, Bundy, Kevin, Targett, Tom, Benson, Andrew, ...
We present new measurements of the evolution in the Lyman break galaxy (LBG) population between z~4 and z~6. By utilizing the extensive multiwavelength datasets available in the GOODS fields, we...
Rauch, Michael, Haehnelt, Martin, Bunker, Andrew, Becker, George, Marleau, Francine, Graham, James, ...
We have conducted a long-slit search for low surface brightness Lyα emitters at redshift 2.67 < z < 3.75. A 92 hr long exposure with the ESO VLT FORS2 instrument down to a 1σ surface brightness...
Four faint T dwarfs from the UKIRT Infrared Deep Sky Surveys (UKIDSS) Southern Stripe (2008)
Chiu, Kuenley, Liu, Michael C., Jiang, Linhua, Allers, Katelyn N., Stark, Daniel P., Bunker, Andrew, ...
We present the optical and near-infrared photometry and spectroscopy of four faint T dwarfs newly discovered from the UKIDSS first data release. The sample, drawn from an imaged area of ∼136...
Four faint T dwarfs from the UKIRT Infrared Deep Sky Surveys (UKIDSS) Southern Stripe (2008)
Chiu, Kuenley, Liu, Michael C., Jiang, Linhua, Allers, Katelyn N., Stark, Daniel P., Bunker, Andrew, ...
We present the optical and near-infrared photometry and spectroscopy of four faint T dwarfs newly discovered from the UKIDSS first data release. The sample, drawn from an imaged area of ∼136 deg2...
Four Faint T Dwarfs from the UKIRT Infrared Deep Sky Survey (UKIDSS) Southern Stripe (2007)
Chiu, Kuenley, Liu, Michael C., Jiang, Linhua, Allers, Katelyn N., Stark, Daniel P., Bunker, Andrew, ...
We present the optical and near-infrared photometry and spectroscopy of four faint T dwarfs newly discovered from the UKIDSS first data release. The sample, drawn from an imaged area of ~136 square...
Rauch, Michael, Haehnelt, Martin, Bunker, Andrew, Becker, George, Marleau, Francine, Graham, James, ...
We have conducted a long slit search for low surface brightness Lyman-alpha emitters at redshift 2.67 < z < 3.75. A 92 hour long exposure with VLT/FORS2 down to a 1-sigma surface brightness detection...
Reuland, Michiel, Van Breugel, Wil, De Vries, Wim, Dopita, Michael A., Dey, Arjun, Miley, George, ...
We present the results of an optical and near-IR spectroscopic study of giant nebular emission-line halos associated with three z > 3 radio galaxies, 4C 41.17, 4C 60.07, and B2 0902+34. Previous deep...
Reuland, Michiel, Van Breugel, Wil, De Vries, Wim, Dopita, Michael A., Dey, Arjun, Miley, George, ...
We present the results of an optical and near-IR spectroscopic study of giant nebular emission line halos associated with three z > 3 radio galaxies, 4C 41.17, 4C 60.07 and B2 0902+34. Previous deep...
The Tully-Fisher relation of galaxies at z~0.85 in the DEEP2 survey (2007)
Chiu, Kuenley, Bamford, Steven P., Bunker, Andrew
Local and intermediate redshift (z~0.5) galaxy samples obey well correlated relations between the stellar population luminosity and maximal galaxy rotation that define the Tully-Fisher (TF) relation....
The Stellar Mass Density at z~6 from Spitzer Imaging of i-drop Galaxies (2006)
Eyles, Laurence, Bunker, Andrew, Ellis, Richard, Lacy, Mark, Stanway, Elizabeth, Stark, Daniel, ...
We measure the ages, stellar masses, and star formation histories of z~6 galaxies, observed within 1Gyr of the Big Bang. We use imaging from HST and Spitzer from the public "Great Observatories...
The star formation rate at redshift one: H-alpha spectroscopy with CIRPASS (2006)
Doherty, Michelle, Bunker, Andrew, Sharp, Robert, Dalton, Gavin, Parry, Ian, Lewis, Ian
We have conducted an H-alpha survey of 38 0.77
Star Forming Galaxies at z~6 and Reionization (2005)
Bunker, Andrew, Stanway, Elizabeth, Ellis, Richard, McMahon, Richard, Eyles, Laurence, Lacy, Mark
We determine the abundance of i'-band drop-outs in the HST/ACS GOODS surveys and the Hubble Ultra Deep Field (UDF). The majority of these sources are likely to be z~6 galaxies whose flux decrement...
Spitzer Imaging of i'-drop Galaxies: Old Stars at z~6 (2005)
Eyles, Laurence, Bunker, Andrew, Stanway, Elizabeth, Lacy, Mark, Ellis, Richard, Doherty, Michelle
We present new evidence for mature stellar populations with ages >100Myr in massive galaxies (M_stellar>10^10M_sun) seen at a time when the Universe was less than 1Gyr old. We analyse the prominent...
Optical and Near-Infrared Integral Field Spectroscopy of the SCUBA Galaxy N2-850.4 (2005)
Swinbank, Mark, Smail, Ian, Bower, Richard, Borys, Colin, Chapman, Scott, Blain, Andrew, ...
We present optical and near-infrared integral field spectroscopy of the SCUBA galaxy SMM J163650.43+405734.5 (ELAIS N2 850.4) at z=2.385. We combine Ly-alpha and H-alpha emission line maps and...
Multi-Object Near-IR H-alpha Spectroscopy of z~1 star-forming galaxies in the HDF-N (2004)
Doherty, Michelle, Bunker, Andrew, Sharp, Robert, Dalton, Gavin, Parry, Ian, Lewis, Ian, ...
We present preliminary results from a programme to obtain multi-object near-infrared spectroscopy of galaxies at redshifts $0.7
CIRPASS: description, performance and astronomical results (2004)
Parry, Ian, Bunker, Andrew, Dean, Andrew, Doherty, Michelle, Horton, Anthony, King, David, ...
The Cambridge Infra-red Panoramic Survey Spectrograph (CIRPASS) is described. This near-infrared (NIR) spectrograph has been used on the 8m Gemini-South Telescope, the 3.9m Anglo-Australian Telescope...
Near-Infrared Properties of I-Drop Galaxies in the Hubble Ultra Deep Field (2004)
Stanway, Elizabeth, McMahon, Richard, Bunker, Andrew
We analyse near-infrared HST/NICMOS F110W (J) and F160W (H) band photometry of a sample of 27 i'-drop candidate z~6 galaxies in the central region of the HST/ACS Ultra Deep Field (HUDF). The infrared...
Extragalactic Integral Field Spectroscopy on the Gemini Telescopes (2004)
Bunker, Andrew, Smith, Joanna, Parry, Ian, Sharp, Rob, Dean, Andrew, Gilmore, Gerry, ...
We have been undertaking a programme on the Gemini 8-m telescopes to demonstrate the power of integral field spectroscopy, using the optical GMOS spectrograph, and the new CIRPASS instrument in the...
Doherty, Michelle, Bunker, Andrew, Sharp, Robert, Dalton, Gavin, Parry, Ian, Lewis, Ian, ...
We present preliminary results from a programme to obtain multi-object near-infrared spectroscopy of galaxies at redshifts 0.7 < z < 1.5. We are using the instrument CIRPASS (the Cambridge Infra-Red...
HST imaging and Keck Spectroscopy of z~6 I-band Drop-Out Galaxies in the ACS GOODS Fields (2003)
Stanway, Elizabeth, Bunker, Andrew, McMahon, Richard, Ellis, Richard, Treu, Tommaso, McCarthy, Patrick
We measure the surface density of i'-band dropout galaxies at z~6 through wide field HST/ACS imaging and ultra-deep Keck/DEIMOS spectroscopy. Using deep HST/ACS SDSS-i' (F775W) and SDSS-z' (F850LP)...
Bunker, Andrew, Smith, Joanna, Spinrad, Hyron, Stern, Daniel, Warren, Stephen
We have discovered extended Lyman-$\alpha$ emission around a $z=4.5$ QSO in a deep long-slit spectrum with Keck/LRIS at moderate spectral resolution ($R\approx 1000$). The line emission extends...
Lyman Break Galaxies and the Star Formation Rate of the Universe at z~6 (2003)
Stanway, Elizabeth, Bunker, Andrew, McMahon, Richard
We determine the space density of UV-luminous star-burst galaxies at z~6 using deep HST ACS SDSS-i' (F775W) and SDSS-z' (F850LP) and VLT ISAAC J and K_s band imaging of the Chandra Deep Field South....
HST Imaging of a z=1.55 Old Galaxy Group (2002)
Bunker, Andrew, Spinrad, Hyron, McLure, Ross, Dey, Arjun, Dunlop, James, Peacock, John, ...
We present high-resolution imaging in the rest-frame optical of the weak radio source LBDS53W091. Previous optical spectroscopy has shown that this object has an evolved stellar population of age...
Near-Infrared Integral Field Spectroscopy of Damped Lyman-alpha Systems (2000)
Bunker, Andrew, Ferguson, Annette, Johnson, Rachel, McMahon, Richard, Parry, Ian, Pettini, Max, ...
We assess the feasibility of detecting star formation in damped Lyman-alpha systems (DLAs) at z>1 through near-infrared spectroscopy using the forthcoming integral field units on 8m-class telescopes....
Stellar Populations and Galaxy Morphology at High Redshift (2000)
Bunker, Andrew, Spinrad, Hyron, Stern, Daniel, Thompson, Rodger, Moustakas, Leonidas, Davis, Marc, ...
In this article we investigate the morphology and stellar populations of high-redshift galaxies through multi-waveband HST imaging and ground-based spatially-resolved spectroscopy. We study the...
Near-Infrared Emission Line Searches for High-Redshift Galaxies (1999)
In this article I review recent developments in near-infrared emission line searches for star-forming galaxies at high redshift. Using the J-, H- & K-bands we can potentially chart the history of...
Spectroscopy of z>3 Lyman-limit Galaxies (1998)
Spinrad, Hyron, Dey, Arjun, Stern, Daniel, Bunker, Andrew
We discuss the spectral character of Lyman-limit-selected, star-forming galaxies at z>3. The rest-frame UV spectra of these faint galaxies may show Ly-alpha in either absorption or emission, probably...