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A 158 µm [C II] Line Survey of Galaxies at z ~ 1-2: An Indicator of Star Formation in the Early Universe
Stacey, G. J.; Benford, D. J.; Staguhn, J. G. +5 more
We have detected the 158 µm [C II] line from 12 galaxies at z ~ 1-2. This is the first survey of this important star formation tracer at redshifts covering the epoch of maximum star formation in the universe and quadruples the number of reported high-z [C II] detections. The line is very luminous, between <0.024% and 0.65% of the far-infr…
A Multiwavelength Study of a Sample of 70 µm Selected Galaxies in the COSMOS Field. I. Spectral Energy Distributions and Luminosities
Aussel, H.; Le Floc'h, E.; Kartaltepe, Jeyhan S. +26 more
We present a large robust sample of 1503 reliable and unconfused 70 µm selected sources from the multiwavelength data set of the Cosmic Evolution Survey. Using the Spitzer IRAC and MIPS photometry, we estimate the total infrared (IR) luminosity, L IR (8-1000 µm), by finding the best-fit template from several different templa…
COBE and the Galactic Interstellar Medium: Geometry of the Spiral Arms from FIR Cooling Lines
Wolfire, Mark; Hollenbach, David; Steiman-Cameron, Thomas Y.
We present a new model for the spiral structure of the Milky Way based upon the essentially all-sky intensity maps of the [C II] 158 µm and [N II] 205 µm lines of the interstellar medium (ISM) obtained by the FIRAS instrument of the Cosmic Background Explorer (COBE), with ancillary data from the Balloon-borne Infrared Carbon Explorer, …
AKARI and BLAST Observations of the Cassiopeia A Supernova Remnant and Surrounding Interstellar Medium
Ade, P. A. R.; Bock, J. J.; Martin, P. G. +30 more
We use new large area far infrared maps ranging from 65 to 500 µm obtained with the AKARI and the Balloon-borne Large Aperture Submillimeter Telescope missions to characterize the dust emission toward the Cassiopeia A supernova remnant (SNR). Using the AKARI high-resolution data we find a new "tepid" dust grain population at a temperature of…
The Debris Disk of Vega: A Steady-state Collisional Cascade, Naturally
Krivov, A. V.; Löhne, T.; Müller, S.
The archetypical debris disk around Vega has been observed intensively over the past 25 years. It has been argued that the resulting photometric data and images may be in contradiction with a standard, steady-state collisional scenario of the disk evolution. In particular, the emission in the mid-infrared (mid-IR) appears to be in excess of what i…
Locating the Accretion Footprint on a Herbig Ae Star: MWC 480
Bouret, J. -C.; Ménard, F.; Kim, S. +27 more
Accretion is a fundamental process which establishes the dynamics of the protoplanetary disk and the final properties of the forming star. In solar-type stars, the star-disk coupling is determined by the magnetic field structure, which is responsible for funneling material from the disk midplane to higher latitudes on the star. Here, we use pan-ch…
Physical Properties and Morphology of a Newly Identified Compact z = 4.04 Lensed Submillimeter Galaxy in Abell 2218
Richard, Johan; Kneib, Jean-Paul; Egami, Eiichi +2 more
We present the identification of a bright submillimeter (submm) source, SMM J163555.5+661300, detected in the lensing cluster Abell 2218, for which we have accurately determined the position using observations from the Submillimeter Array (SMA). The identified optical counterpart has a spectroscopic redshift of z = 4.044 ± 0.001 if we attribute th…
Star Formation in the Bullet Cluster. I. The Infrared Luminosity Function and Star Formation Rate
Gonzalez, Anthony H.; Zaritsky, Dennis; Markevitch, Maxim +2 more
The Bullet Cluster is a massive galaxy cluster at z = 0.297 undergoing a major supersonic (Mach 3) merger event. Using data from Spitzer MIPS and the Infrared Array Camera, optical imaging, and optical spectroscopy, we present the global star formation rate (SFR) of this unique cluster. Using a 90% spectroscopically complete sample of 37 star-form…
Effects of Forsterite Grain Shape on Infrared Spectra
Koike, C.; Tsuchiyama, A.; Suto, H. +5 more
The Infrared Space Observatory (ISO) detected several sharp infrared features around young stars, comets, and evolved stars. These sharp features were identified as Mg-rich crystalline silicates of forsterite and enstatite by comparison with spectra from laboratory data. However, certain infrared emission bands in the observed spectra cannot be id…
A First Glimpse Into the Far-IR Properties of High-z UV-selected galaxies: Herschel/PACS Observations of z ~ 3 LBGs
Berta, S.; Magnelli, B.; Nordon, R. +33 more
We present first insights into the far-IR properties for a sample of IRAC and MIPS 24 µm detected Lyman break galaxies (LBGs) at z ~ 3, as derived from observations in the northern field of the Great Observatories Origins Survey (GOODS-N) carried out with the PACS instrument on board the Herschel Space Observatory. Although none of our galax…