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Effects of electrically charged dark matter on cosmic microwave background anisotropies
Yoshida, Naoki; Kohri, Kazunori; Kamada, Ayuki +1 more
We examine the possibility that dark matter consists of charged massive particles (CHAMPs) in view of the cosmic microwave background (CMB) anisotropies. The evolution of cosmological perturbations of CHAMPs with other components is followed in a self-consistent manner, without assuming that CHAMPs and baryons are tightly coupled. We incorporate f…
Proper motion survey and kinematic analysis of the ρ Ophiuchi embedded cluster
Bouy, H.; Ducourant, C.; Bontemps, S. +7 more
Context. The ρ Ophiuchi molecular complex and in particular the Lynds L1688 dark cloud is unique in its proximity (~130 pc), in its richness in young stars and protostars, and in its youth (0.5 Myr). It is certainly one of the best targets currently accessible from the ground to study the early phases of star-formation. Proper motion analysis is a…
The effect of asymmetric surface topography on dust dynamics on airless bodies
Horányi, M.; Piquette, M.
Without a significant atmosphere or global magnetic field, the lunar surface is exposed to micrometeoroid bombardment, ultraviolet (UV) radiation, and the solar wind. Micrometeoroid bombardment grinds the surface into a regolith comprised of dust grains ranging in size from 10 nm to 1 mm (Grün et al., 2011). Incident UV radiation and solar wind el…
Sunspots, Starspots, and Elemental Abundances
Doschek, G. A.; Warren, H. P.
Element abundances in the solar photosphere, chromosphere, transition region, and corona are key parameters for investigating sources of the solar wind and for estimating radiative losses in the quiet corona and in dynamical events such as solar flares. Abundances in the solar corona and photosphere differ from each other depending on the first io…
Rapid radio flaring during an anomalous outburst of SS Cyg
Miller-Jones, J. C. A.; Fender, R. P.; Mooley, K. P. +12 more
The connection between accretion and jet production in accreting white dwarf binary systems, especially dwarf novae, is not well understood. Radio wavelengths provide key insights into the mechanisms responsible for accelerating electrons, including jets and outflows. Here, we present densely sampled radio coverage, obtained with the Arcminute Mic…
De-blending deep Herschel surveys: A multi-wavelength approach
Burgarella, D.; Wang, L.; Oliver, S. J. +3 more
Aims: Cosmological surveys in the far-infrared are known to suffer from confusion. The Bayesian de-blending tool, XID+, currently provides one of the best ways to de-confuse deep Herschel SPIRE images, using a flat flux density prior. This work is to demonstrate that existing multi-wavelength data sets can be exploited to improve XID+ by prov…
Catalog of equatorial coordinates and B-magnitudes of stars of the Kitab part of the FON project
Ehgamberdiev, Sh. A.; Andruk, V. M.; Muminov, M. M. +3 more
The processing of the plates of the Kitab part of the FON project has been completed. In total, 1963 plates were processed. The catalog of equatorial coordinates α, δ, and B-magnitudes for 13 413268 stars and galaxies up to B ≤ 17.5m for the epoch 1984.97 is compiled. The Epson Expression 10000XL scanner with a 1200 dpi scanning mode an…
K2-60b and K2-107b. A Sub-Jovian and a Jovian Planet from the K2 Mission
Cochran, William D.; Endl, Michael; Gandolfi, Davide +20 more
We report the characterization and independent detection of K2-60b, as well as the detection and characterization of K2-107b, two transiting hot gaseous planets from the K2 space mission. We confirm the planetary nature of the two systems and determine their fundamental parameters combining the K2 time-series data with FIES@NOT and HARPS-N@TNG spe…
Far-infrared Properties of Infrared-bright Dust-obscured Galaxies Selected with IRAS and AKARI Far-infrared All-sky Survey
Goto, Tomotsugu; Yamamura, Issei; Koyama, Yusei +6 more
We investigate the star-forming activity of a sample of infrared (IR)-bright dust-obscured galaxies (DOGs) that show an extreme red color in the optical and IR regime, {(I-[22])}{AB}> 7.0. Combining an IR-bright DOG sample with the flux at 22 µm > 3.8 mJy discovered by Toba & Nagao with the IRAS faint source catalog vers…
Hot Gas in the Wolf-Rayet Nebula NGC 3199
Gruendl, R. A.; Marston, A. P.; Chu, Y. -H. +2 more
The Wolf-Rayet (WR) nebula NGC 3199 has been suggested to be a bow shock around its central star, WR 18, which is presumably a runaway star, because optical images of the nebula show a dominating arc of emission southwest of the star. We present the XMM-Newton detection of extended X-ray emission from NGC 3199, unveiling the powerful effect of the…