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14 papers · 2 filters
Arp102B: An ADAF and a Torus ?
Ranga-Ram Chary
Arp102B is a nearby radio galaxy which displays the presence of double peaked Balmer emission lines. Sub-arcsec Keck mid-infrared imaging and Spitzer spectroscopy reveal a spatiall…
Insights into Galaxy Evolution from Mid-infrared Wavelengths
Ranga-Ram Chary
In this paper, I have attempted to highlight key results from deep extragalactic surveys at mid-infrared wavelengths. I discuss advances in our understanding of dust enshrouded sta…
IR Background Anisotropies in Spitzer GOODS images and constraints on first galaxies
Asantha Cooray, Ian Sullivan, Ranga-Ram Chary +6
We describe the angular power spectrum of unresolved 3.6 micron IR light in Spitzer GOODS fields. The amplitude of the anisotropy spectrum decreases with decreasing flux threshold…
Infrared spectral energy distributions of submillimetre galaxies
Alexandra Pope, Ranga-Ram Chary, Mark Dickinson +1
Submillimetre (sub-mm) galaxies have very high infrared (IR) luminosities and are thousands of times more numerous at z~2 than local ultra-luminous IR galaxies. They therefore repr…
Search with EGRET for a Gamma Ray Line from the Galactic Center
Anthony R. Pullen, Ranga-Ram Chary, Marc Kamionkowski
We search data from the Energetic Gamma Ray Experiment Telescope (EGRET) for a gamma-ray line in the energy range 0.1-10 GeV from the 10 X 10 degree region around the Galactic cent…
Clustering of the IR Background Light with Spitzer: Contribution from Resolved Sources
Ian Sullivan, Asantha Cooray, Ranga-Ram Chary +14
We describe the angular power spectrum of resolved sources at 3.6 microns (L-band) in Spitzer imaging data of the GOODS HDF-N, the GOODS CDF-S, and the NDWFS Bootes field in severa…
Spitzer Observations of the Prototypical Extremely Red Objects HR10 and LBDS53W091: Separating Dusty Starbursts from Old Elliptical Galaxies
Daniel Stern, Ranga-Ram Chary, Peter Eisenhardt +1
We present Spitzer Space Telescope observations of the well-studied extremely red objects (EROs) HR10 and LBDS53W091 from 3.6 to 160 microns. These galaxies are the prototypes of t…
Spitzer 70-micron Source Counts in GOODS-North
D. T. Frayer, M. T. Huynh, R. Chary +7
We present ultra-deep Spitzer 70-micron observations of GOODS-North. For the first time, the turn-over in the 70-micron Euclidean-normalized differential source counts is observed.…
Far-Ultraviolet Imaging of the Hubble Deep Field North: Star Formation in Normal Galaxies at z<1
H. I. Teplitz, B. Siana, T. M. Brown +9
We present far-ultraviolet (FUV) imaging of the Hubble Deep Field North (HDF-N) taken with the Solar Blind Channel of the Advanced Camera for Surveys (ACS/SBC) and the FUV MAMA det…
The Hubble Deep Field North SCUBA Super-map IV - Characterizing submillimetre galaxies using deep Spitzer imaging
Alexandra Pope, Douglas Scott, Mark Dickinson +9
We present SEDs, Spitzer colours, and IR luminosities for 850 micron selected galaxies in the GOODS-N field. Using the deep Spitzer Legacy images and new data and reductions of the…
HST and Spitzer Observations of the Host Galaxy of GRB 050904: A Metal-Enriched, Dusty Starburst at z=6.295
E. Berger, R. Chary, L. L. Cowie +11
We present deep Hubble Space Telescope and Spitzer Space Telescope observations of the host galaxy of GRB 050904 at z=6.295. The host is detected in the H-band and marginally at 3.…
The GOODS-North Radio Galaxies: On the Origin of the Radio Emission
G. Morrison, M. Dickinson, F. Owen +7
We report on a preliminary study concerning the origin of radio emission within radio galaxies at L(1.4GHz)>1E24 W/Hz in the GOODS-N field. In the local universe, Condon et al. (20…
Using Spitzer to probe the nature of submillimetre galaxies in GOODS-N
Alexandra Pope, Douglas Scott, Mark Dickinson +4
How does the submm galaxy population detected by SCUBA fit into galaxy evolution? How do these rare starbursting systems, which contribute significantly to high redshift star-forma…
Mid infrared properties of distant infrared luminous galaxies
D Marcillac, D. Elbaz, R. R. Chary +3
We present evidence that the mid infrared (MIR) is a good tracer of the total infrared luminosity, L(IR), and star formation rate (SFR), of galaxies up to z 1.3. We use deep MIR im…