Search Publications
Missions
Journals
Publication Years
A TGAS/Gaia DR1 parallactic distance to the σ Orionis cluster
Caballero, José A.
With the new Tycho-Gaia Astrometric Solution (TGAS), I derive a new parallactic distance to the young σ Orionis open cluster, which is a cornerstone region for studying the formation and evolution of stars and substellar objects from tens of solar masses to a few Jupiter masses. I started with the list of the 46 brightest cluster stars of Caballer…
Suzaku and Chandra observations of the galaxy cluster RXC J1053.7+5453 with a radio relic
Fukazawa, Yasushi; Nakazawa, Kazuhiro; Ohashi, Takaya +10 more
We present the results of Suzaku and Chandra observations of the galaxy cluster RXC J1053.7+5453 (z = 0.0704), which contains a radio relic. The radio relic is located at a distance of ∼540 kpc from the X-ray peak toward the west. We measured the temperature of this cluster for the first time. The resultant temperature in the center is ∼1.3 keV, w…
The Integrated Cluster Finder for the ARCHES project
Schwope, Axel; Mints, Alexey; Rosen, Simon +2 more
Context. Clusters of galaxies are important for cosmology and astrophysics. They may be discovered through either the summed optical/IR radiation originating from their member galaxies or via X-ray emission originating from the hot intracluster medium. X-ray samples are not affected by projection effects but a redshift determination typically need…
Wind asymmetry imprint in the UV light curves of the symbiotic binary SY Mus
Skopal, A.; Shagatova, N.
Context. Light curves (LCs) of some symbiotic stars show a different slope of the ascending and descending branch of their minimum profile. The origin of this asymmetry is not well understood.
Aims: We explain this effect in the ultraviolet LCs of the symbiotic binary SY Mus.
Methods: We model the continuum fluxes in the spectra obtained…
The mass distribution of the unusual merging cluster Abell 2146 from strong lensing
Baum, Stefi A.; O'Dea, Christopher P.; McNamara, Brian R. +11 more
Abell 2146 consists of two galaxy clusters that have recently collided close to the plane of the sky, and it is unique in showing two large shocks on Chandra X-ray Observatory images. With an early stage merger, shortly after first core passage, one would expect the cluster galaxies and the dark matter to be leading the X-ray emitting plasma. In t…
XMM-Newton observations of the peculiar cataclysmic variable Lanning 386: X-ray evidence for a magnetic primary
Garnavich, P. M.; Kennedy, M. R.; Fausnaugh, M. +2 more
We present the first X-ray observations of the eclipsing cataclysmic variables Lanning 386 and MASTER OTJ192328.22+612413.5, possible SW Sextantis systems. The X-ray light curve of Lanning 386 shows deep eclipses, similar to the eclipses seen in the optical light curve, confirming the high inclination of the system. There is evidence of a periodic…
Magnetic reconnection during steady magnetospheric convection and other magnetospheric modes
Cowley, Stanley W. H.; Gérard, Jean-Claude; Hubert, Benoit +1 more
We use remote sensing of the proton aurora with the IMAGE-FUV SI12 (Imager for Magnetopause to Aurora Global Exploration-Far Ultraviolet-Spectrographic Imaging at 121.8 nm) instrument and radar measurements of the ionospheric convection from the SuperDARN (Super Dual Aurora Radar Network) facility to estimate the open magnetic flux in the Earth's …
The Role of the Upper Atmosphere for Dawn-Dusk Differences in the Coupled Magnetosphere-Ionosphere-Thermosphere System
Haaland, S. E.; Förster, M.; Doornbos, E.
Three-dimensional Monte Carlo dust radiative transfer study of the H-poor planetary nebula IRAS 18333-2357 located in M22
Muthumariappan, C.
We analyse the characteristics of dust and its distribution in the planetary nebula IRAS 18333-2357 located in M22 using a three-dimensional radiative transfer code Hochunk3D. The spectral energy distribution was constructed using ultraviolet, optical and infrared archival data. We also have used Spitzer 8-µm and Wide-field Infrared Survey E…
Candidate exoplanet host HD 131399A: a nascent Am star
Przybilla, N.; Buder, S.; Aschenbrenner, P.
Direct imaging suggests that there is a Jovian exoplanet around the primary A-star in the triple-star system HD 131399. We investigate a high-quality spectrum of the primary component HD 131399A obtained with FEROS on the ESO/MPG 2.2 m telescope, aiming to characterise the star's atmospheric and fundamental parameters, and to determine elemental a…