Search Publications
Evidence for depletion of heavy silicon isotopes at comet 67P/Churyumov-Gerasimenko
Wurz, P.; Altwegg, K.; Balsiger, H. +17 more
Context. The Rosetta Orbiter Spectrometer for Ion and Neutral Analysis (ROSINA) was designed to measure the composition of the gas in the coma of comet 67P/Churyumov-Gerasimenko, the target of the European Space Agency's Rosetta mission. In addition to the volatiles, ROSINA measured refractories sputtered off the comet by the interaction of solar …
First multi-wavelength campaign on the gamma-ray-loud active galaxy IC 310
Maraschi, L.; Covino, S.; Antonelli, L. A. +161 more
Context. The extragalactic very-high-energy gamma-ray sky is rich in blazars. These are jetted active galactic nuclei that are viewed at a small angle to the line-of-sight. Only a handful of objects viewed at a larger angle are so far known to emit above 100 GeV. Multi-wavelength studies of such objects up to the highest energies provide new insig…
Structure formation in a colliding flow: The Herschel view of the Draco nebula
Miville-Deschênes, M. -A.; Boulanger, F.; Abergel, A. +9 more
Context. The Draco nebula is a high Galactic latitude interstellar cloud observed at velocities corresponding to the intermediate velocity cloud regime. This nebula shows unusually strong CO emission and remarkably high-contrast small-scale structures for such a diffuse high Galactic latitude cloud. The 21 cm emission of the Draco nebula reveals t…
Reconstruction of a helical prominence in 3D from IRIS spectra and images
Schmieder, B.; Labrosse, N.; López Ariste, A. +3 more
Context. Movies of prominences obtained by space instruments e.g. the Solar Optical Telescope (SOT) aboard the Hinode satellite and the Interface Region Imaging Spectrograph (IRIS) with high temporal and spatial resolution revealed the tremendous dynamical nature of prominences. Knots of plasma belonging to prominences appear to travel along both …
Indications of a Si-rich bilateral jet of ejecta in the Vela SNR observed with XMM-Newton
Miceli, M.; Bocchino, F.; Orlando, S. +4 more
Context. The Vela supernova remnant displays several ejecta, which are fragment-like features protruding beyond the front of its primary blast shock wave. They appear to be "shrapnel", bowshock-shaped relics of the supernova explosion. One of these pieces of shrapnel (A), located in the northeastern edge of the remnant, is peculiar because its X-r…
Binary companions of nearby supernova remnants found with Gaia
Evans, N. W.; Fraser, M.; Izzard, R. G. +2 more
Aims: We search for runaway former companions of the progenitors of nearby Galactic core-collapse supernova remnants (SNRs) in the Tycho-Gaia astrometric solution (TGAS).
Methods: We look for candidates among a sample of ten SNRs with distances ≲2kpc, taking astrometry and G magnitude from TGAS and B,V magnitudes from the AAVSO Photometr…
Multi-wavelength campaign on NGC 7469. I. The rich 640 ks RGS spectrum
Kaspi, Shai; Kriss, Gerard A.; Mehdipour, Missagh +15 more
Aims: Outflows in active galaxies (AGNs) are common, although their launching mechanism, location, and physical impact on the host galaxy remain controversial. We conducted a multi-wavelength six-month campaign to observe the nearby Seyfert galaxy NGC 7469 with several observatories in order to better understand and quantify the outflow in th…
Cool and hot emission in a recurring active region jet
Del Zanna, Giulio; Mulay, Sargam M.; Mason, Helen
Aims: We present a thorough investigation of the cool and hot temperature components in four recurring active region jets observed on July 10, 2015 using the Atmospheric Imaging Assembly (AIA), X-ray Telescope (XRT), and Interface Region Imaging Spectrograph (IRIS) instruments.
Methods: A differential emission measure (DEM) analysis was …
HIFLUGCS: X-ray luminosity-dynamical mass relation and its implications for mass calibrations with the SPIDERS and 4MOST surveys
Reiprich, Thomas H.; Schwope, Axel; Schneider, Peter +7 more
We present the relation of X-ray luminosity versus dynamical mass for 63 nearby clusters of galaxies in a flux-limited sample, the HIghest X-ray FLUx Galaxy Cluster Sample (HIFLUGCS, consisting of 64 clusters). The luminosity measurements are obtained based on 1.3 Ms of clean XMM-Newton data and ROSAT pointed observations. The masses are estimated…
A star formation study of the ATLAS3D early-type galaxies with the AKARI all-sky survey
Kaneda, H.; Murata, K.; Yamagishi, M. +4 more
Context. The star formation properties of early-type galaxies (ETGs) are currently the subject of considerable interest, particularly whether they differ from the star formation properties of gas-rich spirals.
Aims: We perform a systematic study of star formation in a large sample of local ETGs with polycyclic aromatic hydrocarbon (PAH) and d…