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Tracking down the source population responsible for the unresolved cosmic 6-8 keV background (2012)
Journal Article
Xue, Y., Wang, S., Brandt, W., Luo, B., Alexander, D., Bauer, F., …Young, M. (2012). Tracking down the source population responsible for the unresolved cosmic 6-8 keV background. Astrophysical Journal, 758(2), Article 129. https://doi.org/10.1088/0004-637x/758/2/129

Using the 4 Ms Chandra Deep Field-South (CDF-S) survey, we have identified a sample of 6845 X-ray-undetected galaxies that dominates the unresolved ≈20%-25% of the 6-8 keV cosmic X-ray background (XRB). This sample was constructed by applying mass an... Read More about Tracking down the source population responsible for the unresolved cosmic 6-8 keV background.

GOODS-Herschel and CANDELS : the morphologies of ultraluminous infrared galaxies at z ~ 2 (2012)
Journal Article
Kartaltepe, J., Dickinson, M., Alexander, D., Bell, E., Dahlen, T., Elbaz, D., …Wuyts, S. (2012). GOODS-Herschel and CANDELS : the morphologies of ultraluminous infrared galaxies at z ~ 2. Astrophysical Journal, 757(1), Article 23. https://doi.org/10.1088/0004-637x/757/1/23

Using deep 100 and 160 μm observations in GOODS-South from GOODS-Herschel, combined with high-resolution HST/WFC3 near-infrared imaging from CANDELS, we present the first detailed morphological analysis of a complete, far-infrared (FIR) selected samp... Read More about GOODS-Herschel and CANDELS : the morphologies of ultraluminous infrared galaxies at z ~ 2.

The JCMT nearby galaxies legacy survey - VIII. CO data and the LCO(3-2)-LFIR correlation in the SINGS sample (2012)
Journal Article
Wilson, C., Warren, B., Israel, F., Serjeant, S., Attewell, D., Bendo, G., …White, G. (2012). The JCMT nearby galaxies legacy survey - VIII. CO data and the LCO(3-2)-LFIR correlation in the SINGS sample. Monthly Notices of the Royal Astronomical Society, 424(4), 3050-3080. https://doi.org/10.1111/j.1365-2966.2012.21453.x

The James Clerk Maxwell Telescope Nearby Galaxies Legacy Survey (NGLS) comprises an H I-selected sample of 155 galaxies spanning all morphological types with distances less than 25 Mpc. We describe the scientific goals of the survey, the sample selec... Read More about The JCMT nearby galaxies legacy survey - VIII. CO data and the LCO(3-2)-LFIR correlation in the SINGS sample.

Integral field spectroscopy of 2.0 < z < 2.7 submillimetre galaxies : gas morphologies and kinematics (2012)
Journal Article
Alaghband-Zadeh, S., Chapman, S., Swinbank, A., Smail, I., Harrison, C., Alexander, D., …Umehata, H. (2012). Integral field spectroscopy of 2.0 < z < 2.7 submillimetre galaxies : gas morphologies and kinematics. Monthly Notices of the Royal Astronomical Society, 424(3), 2232-2248. https://doi.org/10.1111/j.1365-2966.2012.21386.x

We present 2D, integral field spectroscopy covering the rest-frame wavelengths of strong optical emission lines in nine submillimetre luminous galaxies (SMGs) at 2.0 < z < 2.7. The Gemini-North/Near-Infrared Integral Field Spectrograph (NIFS) and Ver... Read More about Integral field spectroscopy of 2.0 < z < 2.7 submillimetre galaxies : gas morphologies and kinematics.

Deep silicate absorption features in Compton-thick active galactic nuclei predominantly arise due to dust in the host galaxy (2012)
Journal Article
Goulding, A., Alexander, D., Bauer, F., Forman, W., Hickox, R., Jones, C., …Trichas, M. (2012). Deep silicate absorption features in Compton-thick active galactic nuclei predominantly arise due to dust in the host galaxy. Astrophysical Journal, 755(1), Article 5. https://doi.org/10.1088/0004-637x/755/1/5

We explore the origin of mid-infrared (mid-IR) dust extinction in all 20 nearby (z < 0.05) bona fide Compton-thick (N H > 1.5 × 1024 cm-2) active galactic nuclei (AGNs) with hard energy (E > 10 keV) X-ray spectral measurements. We accurately measure... Read More about Deep silicate absorption features in Compton-thick active galactic nuclei predominantly arise due to dust in the host galaxy.

The cosmic history of hot gas cooling and radio active galactic nucleus activity in massive early-type galaxies (2012)
Journal Article
Danielson, A., Lehmer, B., Alexander, D., Brandt, W., Luo, B., Miller, N., …Stott, J. (2012). The cosmic history of hot gas cooling and radio active galactic nucleus activity in massive early-type galaxies. Monthly Notices of the Royal Astronomical Society, 422(1), 494-509. https://doi.org/10.1111/j.1365-2966.2012.20626.x

We study the X-ray properties of 393 optically selected early-type galaxies (ETGs) over the redshift range of z≈ 0.0–1.2 in the Chandra Deep Fields (CDFs). To measure the average X-ray properties of the ETG population, we use X-ray stacking analyses... Read More about The cosmic history of hot gas cooling and radio active galactic nucleus activity in massive early-type galaxies.

On the nature of high X-ray luminosities in Sloan Digital Sky Survey galaxies (2012)
Journal Article
Jackson, F., Roberts, T., Alexander, D., Gelbord, J., Goulding, A., Ward, M., …Watson, M. (2012). On the nature of high X-ray luminosities in Sloan Digital Sky Survey galaxies. Monthly Notices of the Royal Astronomical Society, 422(1), 2-13. https://doi.org/10.1111/j.1365-2966.2011.20164.x

Surveys have revealed a class of object displaying both high X-ray luminosities (LX > 1042 erg s−1) and a lack of a discernible active galactic nucleus (AGN) in the optical band. If these sources are powered by star formation activity alone, they wou... Read More about On the nature of high X-ray luminosities in Sloan Digital Sky Survey galaxies.

The LABOCA survey of the Extended Chandra Deep Field-South: clustering of submillimetre galaxies (2012)
Journal Article
Hickox, R., Wardlow, J., Smail, I., Myers, A., Alexander, D., Swinbank, A., …Weiss, A. (2012). The LABOCA survey of the Extended Chandra Deep Field-South: clustering of submillimetre galaxies. Monthly Notices of the Royal Astronomical Society, 421(1), 284-295. https://doi.org/10.1111/j.1365-2966.2011.20303.x

We present a measurement of the spatial clustering of submillimetre galaxies (SMGs) at z= 1–3. Using data from the 870 μm Large APEX Bolometer Camera (LABOCA) submillimetre survey of the Extended Chandra Deep Field-South, we employ a novel technique... Read More about The LABOCA survey of the Extended Chandra Deep Field-South: clustering of submillimetre galaxies.