The evolution of the hard X-ray luminosity function of AGN (2009)
Aird, J., Nandra, K., Laird, E. S., Georgakakis, A., Ashby, M. L. N., Barmby, P., ...
We present new observational determinations of the evolution of the 2-10keV X-ray luminosity function (XLF) of AGN. We utilise data from a number of surveys including both the 2Ms Chandra Deep Fields...
On the nature of the first galaxies selected at 350 microns (2009)
Khan, Sophia A., Chanial, Pierre F., Willner, S. P., Pearson, Chris P., Ashby, M. L. N., Benford, Dominic J., ...
[abridged] We present constraints on the nature of the first galaxies selected at 350 microns. The sample includes galaxies discovered in the deepest blank-field survey at 350 microns (in the Bootes...
The IRAC Dark Field; Far- Infrared to X-ray Data (2009)
Krick, J. E., Surace, J. A., Thompson, D., Ashby, M. L. N., Hora, J., Gorjian, V., ...
We present 20 band photometry from the far-IR to X-ray in the Spitzer IRAC dark field. The bias for the near-IR camera on Spitzer is calibrated by observing a ~20 arcminute diameter "dark" field near...
The AzTEC/SMA Interferometric Imaging Survey of Submillimeter-Selected High-Redshift Galaxies (2009)
Younger, J. D., Fazio, G. G., Yun, M. S., Wilson, G. W., Ashby, M. L. N., ...
We present results from a continuing interferometric survey of high-redshift submillimeter galaxies with the Submillimeter Array, including high-resolution (beam size ~2 arcsec) imaging of eight...
The Spitzer Deep, Wide-field Survey (2009)
Ashby, M. L. N., Stern, D., Brodwin, M., Griffith, R., Eisenhardt, P., Kozlowski, S., ...
The Spitzer Deep, Wide-Field Survey (SDWFS) is a four-epoch infrared survey of 10 deg^(2) in the Bootes field of the NOAO Deep Wide-Field Survey using the IRAC instrument on the Spitzer Space...
Galaxy Clusters in the IRAC Dark Field. II. Mid-Infrared Sources (2009)
Krick, J. E., Surace, J. A., Thompson, D., Ashby, M. L. N., Hora, J. L., Gorjian, V., ...
We present infrared (IR) luminosities, star formation rates (SFR), colors, morphologies, locations, and active galactic nuclei (AGNs) properties of 24 μm detected sources in photometrically detected...
The Spitzer Deep, Wide-Field Survey (2009)
Ashby, M. L. N., Stern, D., Brodwin, M., Griffith, R., Eisenhardt, P., Kozlowski, S., ...
The Spitzer Deep, Wide-Field Survey (SDWFS) is a four-epoch infrared survey of ten square degrees in the Bootes field of the NOAO Deep Wide-Field Survey using the IRAC instrument on the Spitzer Space...
The Deep Optical Imaging of the Extended Groth Strip (2009)
Zhao, Ying-He, Huang, Jia-Sheng, Ashby, M. L. N., Fazio, G. G., Miyazaki, S.
We present $u'g'R$ optical images taken with the MMT/Megacam and the Subaru/Suprime of the Extended Groth Strip survey. The total survey covers an area of about $\sim 1$ degree$^2$, including four...
Nearby Galaxies in the 2micron All Sky Survey I. K-band Luminosity Functions (2009)
Devereux, Nick, Willner, S. P., Ashby, M. L. N., Willmer, C. N. A., Hriljac, Paul
Differential K-band luminosity functions (LFs) are presented for a complete sample of 1613 nearby bright galaxies segregated by visible morphology. The LF for late-type spirals follows a power law...
Galaxy Clusters in the IRAC Dark Field II: Mid-IR Sources (2009)
Krick, J. E., Surace, J. A., Thompson, D., Ashby, M. L. N., Hora, J. L., Gorjian, V., ...
We present infrared luminosities, star formation rates, colors, morphologies, locations, and AGN properties of 24 micron-detected sources in photometrically detected high-redshift clusters in order...
The Morphological Type Dependence of K-band Luminosity Functions (2009)
Devereux, Nick, Hriljac, Paul, Willner, S. P., Ashby, M. L. N., Willmer, C. N. A.
Differential 2.2um (K-band) luminosity functions are presented for a complete sample of 1570 nearby Vgsr < 3000 km/s, where Vgsr is the velocity measured with respect to the Galactic standard of...
Clustering of red galaxies around the z=1.53 quasar 3C270.1 (2009)
Haas, Martin, Willner, S. P., Heymann, Frank, Ashby, M. L. N., Fazio, G. G., Wilkes, Belinda J., ...
In the paradigm of hierarchical galaxy formation, luminous radio galaxies mark mass assembly peaks that should contain clusters of galaxies. Observations of the z=1.53 quasar 3C270.1 with the Spitzer...
Spitzer observations of extended Lyman-alpha Clouds in the SSA22 field (2008)
Webb, T. M. A., Yamada, T., Ashby, M. L. N, Matsuda, Y., Egami, E., ...
We present the results of a Spitzer IRAC and MIPS 24 micron study of extended Lyman-alpha clouds (or Lyman-alpha Blobs, LABs) within the SSA22 filamentary structure at z = 3.09. We detect 6/26 LABs...
A Multiwavelength View of Star Formation in Interacting Galaxies in the Pavo Group (2008)
Machacek, M., Ashby, M. L. N., Jones, C., Forman, W. R., Bastian, N.
We combine Spitzer IRAC mid-infrared (MIR) and Chandra X-ray observations of the dominant galaxies NGC6872 and NGC6876 in the Pavo group with archival optical and HI data to study interaction-induced...
Galaxy clusters in the IRAC Dark Field. I. Growth of the Red Sequence (2008)
Krick, J. E., Surace, J. A., Thompson, D., Ashby, M. L. N., Hora, J. L., Gorjian, V., ...
Using three newly identified galaxy clusters at z ~ 1 (photometric redshift) we measure the evolution of the galaxies within clusters from high redshift to the present day by studying the growth of...
Ivison, R. J., Morrison, G. E., Biggs, A. D., Smail, Ian, Willner, S. P., Gurwell, M. A., ...
High-resolution submm imaging of the HzRG, 4C60.07, at z=3.8, has revealed two dusty components. Spitzer imaging shows that one of these components (B) is coincident with an extremely red AGN, offset...
Near- and mid-infrared photometry of high-redshift 3CR sources (2008)
Haas, M., Willner, S. V. P., Heymann, F., Ashby, M. L. N., Fazio, G. G., Wilkes, B. J., ...
Using the Spitzer Space Telescope, we have obtained 3.6--24 micron photometry of 38 radio galaxies and 24 quasars from the 3CR catalog at redshift 1
Galaxy Clusters in the IRAC Dark Field I: Growth of the red sequence (2008)
Krick, J. E., Surace, J. A., Thompson, D., Ashby, M. L. N., Hora, J. L., Gorjian, V., ...
Using three newly identified galaxy clusters at z~1 (photometric redshift) we measure the evolution of the galaxies within clusters from high redshift to the present day by studying the growth of the...
A point source survey of M31 with the Spitzer Space Telescope (2008)
Mould, Jeremy, Barmby, Pauline, Gordon, Karl, Willner, S. P., Ashby, M. L. N., Gehrz, R. D., ...
We explore the stellar population of M31 in a Spitzer Space Telescope survey utilizing IRAC and MIPS observations. Red supergiants are the brightest objects seen in the infrared; they are a prominent...
Spitzer IRAC Infrared Colours of Submillimetre-bright Galaxies (2008)
Yun, Min S., Aretxaga, I., Ashby, M. L. N., Austermann, J., Fazio, G. G., Giavalisco, M., ...
High-redshift submillimetre-bright galaxies identified by blank field surveys at millimetre and submillimetre wavelengths appear in the region of the IRAC colour-colour diagrams previously identified...
A catalog of mid-infrared sources in the Extended Groth Strip (2008)
Barmby, P., Ashby, M. L. N., Eisenhardt, P. R. M., Fazio, G. G., Wright, E. L.
The Extended Groth Strip (EGS) is one of the premier fields for extragalactic deep surveys. Deep observations of the EGS with the Infrared Array Camera (IRAC) on the Spitzer Space Telescope cover an...
The Mid-Infrared Properties of X-ray Sources (2008)
Gorjian, V., Brodwin, M., Kochanek, C. S., Murray, S., Stern, D., Brand, K., ...
We combine the results of the Spitzer IRAC Shallow Survey and the Chandra XBootes Survey of the 8.5 square degrees Bootes field of the NOAO Deep Wide- Field Survey to produce the largest comparison...
AEGIS: Radio and Mid-Infrared Selection of Obscured AGN Candidates (2008)
Park, S. Q., Barmby, P., Fazio, G. G., Nandra, K., Laird, E. S., Georgakakis, A., ...
The application of multi-wavelength selection techniques is crucial for discovering a complete and unbiased set of Active Galactic Nuclei (AGNs). Here, we select a sample of 72 AGN candidates in the...
IRAC Photometric Analysis and the Mid-IR Photometric Properties of Lyman Break Galaxies (2008)
Magdis, G. E., Rigopoulou, D., Fazio, G. G., Willner, S. P., Ashby, M. L. N.
We present photometric analysis of deep mid-infrared observations obtained by Spitzer/IRAC covering the fields Q1422+2309, Q2233+1341, DSF2237a,b, HDFN, SSA22a,b and B20902+34, giving the number...
Ivison, R.J., Morrison, G.E., Biggs, A.D., Smail, I., Willner, S.P., Gurwell, M.A., ...
‘The definitive version is available at www3.interscience.wiley.com '. Copyright Blackwell / RAS. DOI: 10.1111/j.1365-2966.2008.13811.x
Ivison, R. J., Morrison, G. E., Biggs, A. D., Smail, Ian, Willner, S. P., Gurwell, M. A., ...
High-resolution submillimetre (submm) imaging of the high-redshift radio galaxy (HzRG), 4C60.07, at z = 3.8, has revealed two dusty components of roughly equal integrated flux. Spitzer imaging shows...
The Active Nucleus of IC4970: A Nearby Example of Merger-Induced Cold-Gas Accretion (2007)
Machacek, M. E., Kraft, R. P., Ashby, M. L. N., Evans, D. A., Jones, C., Forman, W. R.
We present results from Chandra X-ray and Spitzer mid-infrared observations of the interacting galaxy pair NGC6872/IC4970 in the Pavo galaxy group and show that the smaller companion galaxy IC4970...
AEGIS: Infrared spectroscopy of an infrared-luminous Lyman break galaxy at z = 3.01 (2007)
Rigopoulou, D., Papovich, C., Ashby, M. L. N., Willner, S. P., Ivison, R., ...
We report the detection of rest-frame 6.2 and 7.7 μm emission features arising from polycyclic aromatic hydrocarbons (PAHs) in the Spitzer IRS spectrum of an infrared-luminous Lyman break galaxy at...
Le Floc'h, E., Willmer, C. N. A., Noeske, K., Konidaris, N. P., Laird, E. S., Koo, D. C., ...
As part of the All-Wavelength Extended Groth Strip International Survey (AEGIS), we describe the panchromatic characterization of an X-ray–luminous active galactic nucleus (AGN) in a merging galaxy...
The All-Wavelength Extended Groth Strip International Survey (AEGIS) Data Sets (2007)
Davis, M., Guhathakurta, P., Konidaris, N. P., Newman, J. A., Ashby, M. L. N., Biggs, A. D., ...
In this the first of a series of Letters, we present a panchromatic data set in the Extended Groth Strip region of the sky. Our survey, the All-Wavelength Extended Groth Strip International Survey...
The Local Galaxy 8 micron Luminosity Function (2007)
Ashby, M. L. N., Barmby, P., Brodwin, M., Brown, M. J. I., Caldwell, N., ...
A SST survey in the NOAO Deep-Wide Field in Bo\"otes provides a complete, 8-micron-selected sample of galaxies to a limiting (Vega) magnitude of 13.5. In the 6.88 deg$^2$ field sampled, 79% of the...
The M33 Variable Star Population Revealed by Spitzer (2007)
McQuinn, K. B. W., Woodward, Charles E., Willner, S. P., Polomski, E. F., Gehrz, R. D., Humphreys, Roberta M., ...
We analyze five epochs of Spitzer Space Telescope/Infrared Array Camera (IRAC) observations of the nearby spiral galaxy M33. Each epoch covered nearly a square degree at 3.6, 4.5, and 8.0 microns....
AEGIS: Infrared Spectral Energy Distributions of MIPS 70micron selected sources (2006)
Symeonidis, M., Rigopoulou, D., Davis, M., Ashby, M. L. N., Barmby, P., ...
We present 0.5 -160 micron Spectral Energy Distributions (SEDs) of galaxies, detected at 70microns with the Multiband Imaging Photometer for Spitzer (MIPS), using broadband imaging data from Spitzer...
An almost head-on collision as the origin of two off-centre rings in the Andromeda galaxy (2006)
Block, D. L., Bournaud, F., Combes, F., Groess, R., Barmby, P., Ashby, M. L. N., ...
The unusual morphology of the Andromeda Spiral (Messier 31, the closest spiral galaxy to the Milky Way) has long been an enigma. Although regarded for decades as showing little evidence of a violent...
An almost head-on collision as the origin of two off-centre rings in the Andromeda galaxy (2006)
Block, D. L., Bournaud, F., Combes, F., Groess, R., Barmby, P., Ashby, M. L. N., ...
The unusual morphology of the Andromeda Spiral (Messier 31, the closest spiral galaxy to the Milky Way) has long been an enigma. Although regarded for decades as showing little evidence of a violent...
The All-Wavelength Extended Groth Strip International Survey (AEGIS) Data Sets (2006)
Davis, M., Guhathakurta, P., Konidaris, N.P., Newman, J.A., Ashby, M.L.N., Biggs, A.D., ...
A SCUBA/Spitzer Investigation of the Far Infra-Red Extragalactic Background (2006)
Dye, S., Eales, S. A., Ashby, M. L. N., Egami, E., Brodwin, M., ...
We have measured the contribution of submillimeter and mid-infrared sources to the extragalactic background radiation at 70 and 160um. Specifically, we have stacked flux in 70 and 160um Spitzer Space...
Floc'h, E. Le, Willmer, C. N. A., Noeske, K., Konidaris, N. P., Laird, E. S., Koo, D. C., ...
As part of the "All Wavelength Extended Groth Strip International Survey" (AEGIS), we describe the panchromatic characterization of an X-ray luminous active galactic nucleus (AGN) in a merging galaxy...
Dusty waves on a starry sea: the mid-infrared view of M31 (2006)
Barmby, P., Ashby, M. L. N., Bianchi, L., Engelbracht, C. W., Gehrz, R. D., Gordon, K. D., ...
Mid-infrared observations of the Andromeda galaxy, M31, obtained with the Infrared Array Camera on board the Spitzer Space Telescope, are presented. The image mosaics cover areas of approximate...
Wilson, G., Huang, J. S., Fazio, G. G., Yan, R., Koekemoer, A. M., Salim, S., ...
We study 87 Extremely Red Objects (EROs), selected both to have color redder than R-[3.6] = 4.0, and to have confirmed spectroscopic redshifts. Together, these two constraints result in this sample...
AEGIS: Infrared Spectroscopy of An Infrared Luminous Lyman Break Galaxy at z=3.01 (2006)
Rigopoulou, D., Papovich, C., Ashby, M. L. N., Willner, S. P., Ivison, R., ...
We report the detection of rest--frame 6.2 and 7.7 \micron emission features arising from Polycyclic Aromatic Hydrocarbons (PAH) in the Spitzer/IRS spectrum of an infrared-luminous Lyman break galaxy...
Mid-infrared Identification of 6 cm Radio Source Counterparts in the Extended Groth Strip (2006)
Willner, S. P., Coil, A. L., Goss, W. M., Ashby, M. L. N., Barmby, P., ...
A new 6-cm survey of almost 0.6 square degrees to a limit of 0.55-mJy/beam (10-sigma) finds 37 isolated radio sources and 7 radio source pairs (not necessarily physical companions). IRAC counterparts...
Photometric Redshifts in the IRAC Shallow Survey (2006)
Brodwin, M., Brown, M. J. I., Ashby, M. L. N., Bian, C., Brand, K., Dey, A., ...
Accurate photometric redshifts are calculated for nearly 200,000 galaxies to a 4.5 micron flux limit of ~13 uJy in the 8.5 deg^2 Spitzer/IRAC Shallow survey. Using a hybrid photometric redshift...
The All-wavelength Extended Groth Strip International Survey (AEGIS) Data Sets (2006)
Davis, M., Guhathakurta, P., Konidaris, N., Newman, J. A., Ashby, M. L. N., Biggs, A. D., ...
In this the first of a series of Letters, we present a description of the panchromatic data sets that have been acquired in the Extended Groth Strip region of the sky. Our survey, the All-wavelength...
SPITZER Observations of z~3 Lyman Break Galaxies: stellar masses and mid-infrared properties (2006)
Rigopoulou, D., Papovich, C., Ashby, M. L. N., Barmby, P., Shu, C., ...
We describe the spectral energy distributions (SEDs) of Lyman Break Galaxies (LBGs) at z~3 using deep mid-infrared and optical observations of the Extended Groth Strip, obtained with IRAC and MIPS on...
Spitzer/MIPS Infrared Imaging of M31: Further Evidence for a Spiral/Ring Composite Structure (2006)
Gordon, Karl D., Bailin, J., Engelbracht, C. W., Rieke, G. H., Misselt, K. A., Latter, W. B., ...
New images of M31 at 24, 70, and 160 micron taken with the Multiband Imaging Photometer for Spitzer (MIPS) reveal the morphology of the dust in this galaxy. This morphology is well represented by a...
An investigation of the submillimeter background radiation using SCUBA and Spitzer (2005)
Dye, S., Eales, S. A., Ashby, M. L. N., Webb, T. M. A., Barmby, P., ...
We investigate the redshift dependence of the contribution to the extragalactic far-infrared/sub-millimeter background from galaxies detected by the Spitzer Space Telescope at 8um and 24um. Using...
IRS spectra of two ultraluminous infrared galaxies at z=1.3 (2005)
Desai, V., Armus, L., Soifer, B. T., Weedman, D. W., Higdon, S., Bian, C., ...
We present low-resolution (64 < R < 124) mid-infrared (8--38 micron) Spitzer/IRS spectra of two z~1.3 ultraluminous infrared galaxies (LFIR~10^13) discovered in a Spitzer/MIPS survey of the Bootes...
Buckalew, Brent A., Kobulnicky, Henry A., Darnel, Jonathan M., Polomski, Elisha, Gehrz, Robert D., Humphreys, Roberta M., ...
We present ultraviolet, optical, near-infrared, Spitzer mid-infrared, and radio images of 14 radio-selected objects in M 33. These objects are thought to represent the youngest phase of star cluster...
The Diverse Infrared Properties of a Complete Sample of Star-Forming Dwarf Galaxies (2005)
Rosenberg, J. L., Ashby, M. L. N., Salzer, J. J.
We present mid-infrared Spitzer Space Telescope observations of a complete sample of star-forming dwarf galaxies selected from the KPNO International Spectroscopic Survey. The galaxies span a wide...
Infrared Luminous Lyman Break Galaxies: A Population that Bridges LBGs and SCUBA Galaxies (2005)
Rigopoulou, D., Willner, S. P., Papovich, C., Shu, C., Ashby, M. L. N., ...
A deep mid- and far-infrared survey in the Extended Groth Strip (EGS) area gives 3.6 to 8\micron flux densities or upper limits for 253 Lyman Break Galaxies (LBGs). The LBGs are a diverse population...
Emission Features and Source Counts of Galaxies in Mid-Infrared (2004)
Xu, C., Hacking, P. B., Fang, F., Shupe, D. L., Lonsdale, C. J., Lu, N. Y., ...
In this work we incorporate the newest ISO results on the mid-infrared spectral-energy-distributions (MIR SEDs) of galaxies into models for the number counts and redshift distributions of MIR surveys.
The Anatomy of Star Formation in NGC 300 (2004)
Helou, G., Roussel, H., Appleton, P., Frayer, D., Stolovy, S., Storrie-Lombardi, L., ...
The Spitzer Space Telescope was used to study the mid-infrared to far-infrared properties of NGC 300, and to compare dust emission to Halpha to elucidate the heating of the ISM and the star formation...
Spatial Distribution of Warm Dust in Early-Type Galaxies (2004)
Pahre, M. A., Ashby, M. L. N., Fazio, G. G., Willner, S. P.
Images taken with the IRAC instrument on the Spitzer Space Telescope show that the spatial distribution of warm dust emission in lenticular galaxies is often organized into dynamically-stable...
The Off-nuclear Starbursts In NGC 4038/4039 (The Antennae Galaxies) (2004)
Wang, Z., Fazio, G. G., Ashby, M. L. N., Pahre, M. A., Smith, H. A., ...
Imaging of the Antennae galaxies (NGC 4038/4039) with the Infrared Array Camera (IRAC) aboard the Spitzer Space Telescope reveals large concentrations of star forming activity away from both nuclei...
The IRAC Shallow Survey (2004)
Eisenhardt, P. R., Stern, D., Brodwin, M., Fazio, G. G., Rieke, G. H., Rieke, M. J., ...
The IRAC shallow survey covers 8.5 square degrees in the NOAO Deep Wide-Field Survey in Bootes with 3 or more 30 second exposures per position. An overview of the survey design, reduction,...
IRAC Observations of M81 (2004)
Willner, S. P., Ashby, M. L. N., Barmby, P., Fazio, G. G., Pahre, M., Smith, H. A., ...
IRAC images of M81 show three distinct morphological constituents: a smooth distribution of evolved stars with bulge, disk, and spiral arm components; a clumpy distribution of dust emission tracing...
Mid-Infrared Galaxy Morphology Along the Hubble Sequence (2004)
Pahre, M. A., Ashby, M. L. N., Fazio, G. G., Willner, S. P.
The mid-infrared emission from 18 nearby galaxies imaged with the IRAC instrument on Spitzer Space Telescope samples the spatial distributions of the reddening-free stellar photospheric emission and...
Number Counts At 3 < lambda < 10 um From the Spitzer Space Telescope (2004)
Fazio, G. G., Ashby, M. L. N., Barmby, P., Hora, J. L., Pahre, M. A., ...
Infrared source counts at wavelengths 3 < lambda < 10 um cover more than 10 magnitudes in source brightness, four orders of magnitude in surface density, and reach an integrated surface density of...
Submillimeter Wave Astronomy Satellite Observations of Extended Water Emission in Orion (2000)
Snell, R. L., Howe, J. E., Ashby, M. L. N., Bergin, E. A., Chin, G., Erickson, N. R., ...
We have used the Submillimeter Wave Astronomy Satellite to map the ground-state 1_{10}-1_{01} transition of ortho-water at 557 GHz in the Orion molecular cloud. Water emission was detected in Orion...
The Distribution of Water Emission in M17SW (2000)
Snell, R. L., Howe, J. E., Ashby, M. L. N., Bergin, E. A., Chin, G., Erickson, N. R., ...
We present a 17-point map of the M17SW cloud core in the 1_{10}-1_{01} transition of ortho-water at 557 GHz obtained with the Submillimeter Wave Astronomy Satellite. Water emission was detected in 11...
Water Abundance in Molecular Cloud Cores (2000)
Snell, R. L., Howe, J. E., Ashby, M. L. N., Bergin, E. A., Chin, G., Erickson, N. R., ...
We present Submillimeter Wave Astronomy Satellite (SWAS) observations of the 1_{10}-1_{01} transition of ortho-water at 557 GHz toward 12 molecular cloud cores. The water emission was detected in NGC...
Extended [C I] and ^{13}CO(5-4) Emission in M17SW (2000)
Howe, J. E., Ashby, M. L. N., Bergin, E. A., Chin, G., Erickson, N. R., Goldsmith, P. F., ...
We mapped a 13 by 22 pc region in emission from 492 GHz [C I] and, for the first time, 551 GHz ^{13}CO(5-4) in the giant molecular cloud M17SW, using the Submillimeter Wave Astronomy Satellite. The...