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Planck 2015 results. II. Low Frequency Instrument data processings
Bernard, J. -P.; Planck Collaboration; Ade, P. A. R. +214 more
We present an updated description of the Planck Low Frequency Instrument (LFI) data processing pipeline, associated with the 2015 data release. We point out the places where our results and methods have remained unchanged since the 2013 paper and we highlight the changes made for the 2015 release, describing the products (especially timelines) and…
Multiple stellar populations in Magellanic Cloud clusters - IV. The double main sequence of the young cluster NGC 1755
Da Costa, G. S.; Milone, A. P.; Marino, A. F. +4 more
Nearly all the star clusters with ages of ∼1-2 Gyr in both Magellanic Clouds exhibit an extended main-sequence turn-off (eMSTO) whose origin is under debate. The main scenarios suggest that the eMSTO could be either due to multiple generations of stars with different ages or to coeval stellar populations with different rotation rates. In this pape…
The XXL Survey. III. Luminosity-temperature relation of the bright cluster sample
Smith, G. P.; Chiappetti, L.; Pierre, M. +13 more
Context. The XXL Survey is the largest homogeneous survey carried out with XMM-Newton. Covering an area of 50 deg2, the survey contains several hundred galaxy clusters out to a redshift of ~2 above an X-ray flux limit of ~5 × 10-15 erg cm-2 s-1. This paper belongs to the first series of XXL papers focusi…
The Herschel-ATLAS Data Release 1 - II. Multi-wavelength counterparts to submillimetre sources
Ivison, R. J.; Dunlop, J. S.; Cooray, A. +27 more
This paper is the second in a pair of papers presenting data release 1 (DR1) of the Herschel Astrophysical Terahertz Large Area Survey (H-ATLAS), the largest single open-time key project carried out with the Herschel Space Observatory. The H-ATLAS is a wide-area imaging survey carried out in five photometric bands at 100, 160, 250, 350 and 500 &mi…
Measures of galaxy dust and gas mass with Herschel photometry and prospects for ALMA
Berta, S.; Lutz, D.; Genzel, R. +2 more
Combining the deepest Herschel extragalactic surveys (PEP, GOODS-H, HerMES), and Monte Carlo mock catalogs, we explore the robustness of dust mass estimates based on modeling of broadband spectral energy distributions (SEDs) with two popular approaches: Draine & Li (2007, ApJ, 657, 810; DL07) and a modified blackbody (MBB). We analyze the caus…
The Electron Temperature and Anisotropy in the Solar Wind. Comparison of the Core and Halo Populations
Trávníček, P. M.; Maksimovic, M.; Štverák, Š. +3 more
Estimating the temperature of solar wind particles and their anisotropies is particularly important for understanding the origin of their deviations from thermal equilibrium and the effects this has. In the absence of energetic events, the velocity distribution of electrons reveals a dual structure with a thermal (Maxwellian) core and a supratherm…
Small-scale Magnetic Islands in the Solar Wind and Their Role in Particle Acceleration. II. Particle Energization inside Magnetically Confined Cavities
Zank, Gary P.; Li, Gang; Malandraki, Olga E. +3 more
We explore the role of heliospheric magnetic field configurations and conditions that favor the generation and confinement of small-scale magnetic islands associated with atypical energetic particle events (AEPEs) in the solar wind. Some AEPEs do not align with standard particle acceleration mechanisms, such as flare-related or simple diffusive sh…
Flat rotation curves and low velocity dispersions in KMOS star-forming galaxies at z ~ 1
Miller, S. H.; Fraternali, F.; Di Teodoro, E. M.
The study of the evolution of star-forming galaxies requires the determination of accurate kinematics and scaling relations out to high redshift. In this paper we select a sample of 18 galaxies at z ~ 1, observed in the Hα emission line with KMOS, to derive accurate kinematics using a novel 3D analysis technique. We use the new code 3DB…
A Precise Determination of the Mid-infrared Interstellar Extinction Law Based on the APOGEE Spectroscopic Survey
Gao, Jian; Wang, Shu; Li, Aigen +3 more
A precise measure of the mid-infrared interstellar extinction law is crucial for investigating the properties of interstellar dust, especially larger-sized grains. Based on the stellar parameters derived from the SDSS-III/Apache Point Observatory Galaxy Evolution Experiment (APOGEE) spectroscopic survey, we select a large sample of G-type and K-ty…
A very deep Chandra view of metals, sloshing and feedback in the Centaurus cluster of galaxies
Fabian, A. C.; Hlavacek-Larrondo, J.; Blundell, K. M. +6 more
We examine deep Chandra X-ray observations of the Centaurus cluster of galaxies, Abell 3526. Applying a gradient magnitude filter reveals a wealth of structure, from filamentary soft emission on 100 pc (0.5 arcsec) scales close to the nucleus to features 10 s of kpc in size at larger radii. The cluster contains multiple high-metallicity regions wi…