Search Publications
Current dark matter annihilation constraints from CMB and low-redshift data
Madhavacheril, Mathew S.; Sehgal, Neelima; Slatyer, Tracy R.
Updated constraints on the dark matter cross section and mass are presented combining cosmic microwave background (CMB) power spectrum measurements from Planck, WMAP9, ACT, and SPT as well as several low-redshift data sets (BAO, HST, and supernovae). For the CMB data sets, we combine WMAP9 temperature and polarization data for l ≤431 with Planck t…
A Large Catalog of Accurate Distances to Molecular Clouds from PS1 Photometry
Price, P. A.; Rix, H. -W.; Chambers, K. C. +12 more
Distance measurements to molecular clouds are important but are often made separately for each cloud of interest, employing very different data and techniques. We present a large, homogeneous catalog of distances to molecular clouds, most of which are of unprecedented accuracy. We determine distances using optical photometry of stars along lines o…
Jellyfish: Evidence of Extreme Ram-pressure Stripping in Massive Galaxy Clusters
Edge, A. C.; Ebeling, H.; Stephenson, L. N.
Ram-pressure stripping by the gaseous intracluster medium has been proposed as the dominant physical mechanism driving the rapid evolution of galaxies in dense environments. Detailed studies of this process have, however, largely been limited to relatively modest examples affecting only the outermost gas layers of galaxies in nearby and/or low-mas…
The Wolf-Rayet stars in the Large Magellanic Cloud. A comprehensive analysis of the WN class
Foellmi, C.; Hamann, W. -R.; Oskinova, L. M. +6 more
Context. Massive stars, although being important building blocks of galaxies, are still not fully understood. This especially holds true for Wolf-Rayet (WR) stars with their strong mass loss, whose spectral analysis requires adequate model atmospheres.
Aims: Following our comprehensive studies of the WR stars in the Milky Way, we now present …
Inference of the cold dark matter substructure mass function at z = 0.2 using strong gravitational lenses
Vegetti, S.; Treu, T.; Auger, M. W. +2 more
We present the results of a search for galaxy substructures in a sample of 11 gravitational lens galaxies from the Sloan Lens ACS Survey by Bolton et al. We find no significant detection of mass clumps, except for a luminous satellite in the system SDSS J0956+5110. We use these non-detections, in combination with a previous detection in the system…
The bright end of the galaxy luminosity function at z≃7: before the onset of mass quenching?
Taniguchi, Y.; Bowler, R. A. A.; McLure, R. J. +9 more
We present the results of a new search for bright star-forming galaxies at redshift z ≃ 7 within the UltraVISTA second data release (DR2) and UKIDSS (UKIRT Infrared Deep Sky Survey) UDS (Ultra Deep Survey) DR10 data, which together provide 1.65 deg2 of near-infrared imaging with overlapping optical and Spitzer data. Using a full photome…
Planck 2013 results. IX. HFI spectral response
Kneissl, R.; Miville-Deschênes, M. -A.; Boulanger, F. +217 more
The Planck High Frequency Instrument (HFI) spectral response was determined through a series of ground based tests conducted with the HFI focal plane in a cryogenic environment prior to launch. The main goal of the spectral transmission tests was to measure the relative spectral response (includingthe level of out-of-band signal rejection) of all …
A local clue to the reionization of the universe
Heckman, Timothy M.; Leitherer, Claus; Borthakur, Sanchayeeta +1 more
Identifying the population of galaxies that was responsible for the reionization of the universe is a long-standing quest in astronomy. We present a possible local analog that has an escape fraction of ionizing flux of 21%. Our detection confirms the existence of gaps in the neutral gas enveloping the starburst region. The candidate contains a mas…
Planck 2013 results. XXVIII. The Planck Catalogue of Compact Sources
Kneissl, R.; Miville-Deschênes, M. -A.; Bernard, J. -P. +241 more
The Planck Catalogue of Compact Sources (PCCS) is the catalogue of sources detected in the first 15 months of Planck operations, the “nominal” mission. It consists of nine single-frequency catalogues of compact sources, both Galactic and extragalactic, detected over the entire sky. The PCCS covers the frequency range 30-857 GHz with higher sensiti…
Planck 2013 results. XIII. Galactic CO emission
Miville-Deschênes, M. -A.; Boulanger, F.; Bernard, J. -P. +241 more
Rotational transition lines of CO play a major role in molecular radio astronomy as a mass tracer and in particular in the study of star formation and Galactic structure. Although a wealth of data exists for the Galactic plane and some well-known molecular clouds, there is no available high sensitivity all-sky survey of CO emission to date. Such a…