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The Palomar Transient Factory (PTF) is a wide-field experiment designed to investigate the optical transient and variable sky on time scales from minutes to years. PTF uses the CFH12k mosaic camera, with a field of view of 7:9 deg and a plate scale of 1′′ pixel , mounted on the Palomar Observatory 48 inch Samuel Oschin Telescope. The PTF operation strategy(More)
BICEP2/Keck and Planck Collaborations: P. A. R. Ade, N. Aghanim, Z. Ahmed, R. W. Aikin, K. D. Alexander, M. Arnaud, J. Aumont, C. Baccigalupi, A. J. Banday, 9 D. Barkats, R. B. Barreiro, J. G. Bartlett, 13 N. Bartolo, 15 E. Battaner, 17 K. Benabed, 19 A. Benoit-Lévy, 18, 19 S. J. Benton, J.-P. Bernard, 9 M. Bersanelli, 23 P. Bielewicz, 9, 7 C. A. Bischoff,(More)
Using the Spitzer Space Telescope and the Very Large Array (VLA), we present the first direct evidence that the well-known far-infrared/radio correlation is valid to cosmologically significant redshift. We also confirm, with improved statistics compared with previous surveys, a similar result for the mid-IR/radio correlation. We explore the dependence of(More)
Physical dust models are presented for 65 galaxies in the SINGS survey that are strongly detected in the four IRAC bands and three MIPS bands. For each galaxy we estimate (1) the total dust mass, (2) the fraction of the dust mass contributed by PAHs, and (3) the intensity of the starlight heating the dust grains. We find that spiral galaxies have dust(More)
The Palomar Transient Factory (PTF) provides multiple epoch imaging for a large fraction of the celestial sphere. Here, we describe the photometric calibration of the PTF data products that allows the PTF magnitudes to be related to other magnitude systems. The calibration process utilizes Sloan Digital Sky Survey (SDSS) r ∼ 16 mag point-source objects as(More)
We have studied the relationship between the star formation rate (SFR), surface density, and gas surface density in the spiral galaxyM51a (NGC 5194), usingmultiwavelength data obtained as part of the Spitzer Infrared Nearby Galaxies Survey (SINGS).We introduce a new SFR index based on a linear combination of H emission-line and 24 m continuum luminosities,(More)
We present the Spitzer Multiband Imaging Photometer 24 m source counts in the Extragalactic First Look Survey (FLS) main, verification, and European Large Area ISO Survey N1 fields. Spitzer’s increased sensitivity and efficiency in large areal coverage over previous infrared telescopes, coupled with the enhanced sensitivity of the 24 m band to sources at(More)
We present a sample of low-resolution 5Y38 m Spitzer IRS spectra of the inner few square kiloparsecs of 59 nearby galaxies spanning a large range of star formation properties. A robust method for decomposing mid-infrared galaxy spectra is described and used to explore the behavior of PAH emission and the prevalence of silicate dust extinction. Evidence for(More)
We describe the near real-time transient-source discovery engine for the intermediate Palomar Transient Factory (iPTF), currently in operations at the Infrared Processing and Analysis Center (IPAC), Caltech. We coin this system the IPAC/iPTF Discovery Engine (or IDE). We review the algorithms used for PSF-matching, image subtraction, detection, photometry,(More)