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- Center for Astrophysics Harvard & SmithsonianUS436 papers
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9 papers · 2 filters
Fixing the U-band photometry of Type Ia supernovae
Kevin Krisciunas, Deepak Bastola, Juan Espinoza +8
We present previously unpublished photometry of supernovae 2003gs and 2003hv. Using spectroscopically-derived corrections to the U-band photometry, we reconcile U-band light curves…
The impact of camera optical alignments on weak lensing measures for the Dark Energy Survey
Michelle L. Antonik, David J. Bacon, Sarah Bridle +16
Telescope Point Spread Function (PSF) quality is critical for realising the potential of cosmic weak lensing observations to constrain dark energy and test General Relativity. In t…
Stellar Populations of Lyman Break Galaxies at z=1-3 in the HST/WFC3 Early Release Science Observations
N. P. Hathi, S. H. Cohen, R. E. Ryan +24
We analyze the spectral energy distributions (SEDs) of Lyman break galaxies (LBGs) at z=1-3 selected using the Hubble Space Telescope (HST) Wide Field Camera 3 (WFC3) UVIS channel…
The Spitzer Extragalactic Representative Volume Survey (SERVS): survey definition and goals
J. -C. Mauduit, M. Lacy, D. Farrah +81
We present the Spitzer Extragalactic Representative Volume Survey (SERVS), an 18 square degrees medium-deep survey at 3.6 and 4.5 microns with the post-cryogenic Spitzer Space Tele…
The Carina Project. V. The impact of NLTE effects on the iron content
M. Fabrizio, T. Merle, F. Thévenin +21
We have performed accurate iron abundance measurements for 44 red giants (RGs) in the Carina dwarf spheroidal (dSph) galaxy. We used archival, high-resolution spectra (R~38,000) co…
The Chandra Multi-Wavelength Project: Optical Spectroscopy and the Broadband Spectral Energy Distributions of X-ray Selected AGN
Markos Trichas, Paul J. Green, John D. Silverman +20
From optical spectroscopy of X-ray sources observed as part of ChaMP, we present redshifts and classifications for a total of 1569 Chandra sources from our targeted spectroscopic f…