Search Publications
Morpho-kinematics of MACS J0416.1-2403 low-mass galaxies
Böhm, A.; Ziegler, B. L.; Maier, C. +2 more
We use optical integral field spectroscopy from VLT/MUSE, as well as photometric observations from Hubble Space Telescope and VLT/HAWK-I, to study the morpho-kinematics of 17 low-mass (log(M/M⊙) < 9.5) MACS J0416.1-2403 cluster galaxies at R200 and five field galaxies with a redshift of z ∼ 0.4. By measuring fluxes of stro…
Revisiting the high-mass transfer close binary star system AU Monocerotis
Shore, Steven N.; Armeni, Antonio
Context. AU Monocerotis is an eclipsing, double-lined spectroscopic binary with a period of 11 days that is in a state of extreme mass transfer, consisting of a main sequence B-type embedded in a thick accretion disk fed by a Roche lobe overflowing evolved G-type companion. It is also one of the double periodic variable Algol-type binaries.
A…
Candidate cosmic filament in the GJ526 field, mapped with the NIKA2 camera
Berta, S.; Aussel, H.; Adam, R. +44 more
Distinctive large-scale structures have been identified in the spatial distribution of optical galaxies up to redshift z ∼ 1. In the more distant universe, the relationship between the dust-obscured population of star-forming galaxies observed at millimetre wavelengths and the network of cosmic filaments of dark matter apparent in all cosmological…
Exploring the region encompassing γ Cygni SNR and MAGIC J2019+408 with the GMRT at 325 and 610 MHz
Paredes, J. M.; Strzys, M.; Ishwara-Chandra, C. H. +2 more
Context. γ Cygni is a young supernova remnant located in the Cygnus region. MAGIC (Major Atmospheric Gamma Imaging Cherenkov) telescopes detected TeV emission (MAGIC J2019+408) to the north-west of this remnant, ~5' from its border.
Aims: We want to identify the radio sources within the region encompassing γ Cygni and MAGIC J2019+408 to shed …
X-ray characterisation of the massive galaxy cluster ClG J104803.7+313843 at z = 0.76 with XMM-Newton
Rossetti, M.; Bartalucci, I.; Molendi, S. +6 more
We present the characterisation of the massive cluster ClG J104803.7+313843 at z = 0.76 performed using a serendipitous XMM-Newton observation. High redshift and massive objects represent an ideal laboratory to benchmark our understanding of how clusters form and assembly formation is mainly driven by gravity. Leveraging the high throughput of XMM…
Characterising the orbit and circumstellar environment of the high-mass binary MWC 166 A
Mérand, Antoine; Monnier, John D.; Lanthermann, Cyprien +13 more
Context. Stellar evolution models are highly dependent on accurate mass estimates, especially for highly massive stars in the early stages of stellar evolution. The most direct method for obtaining model-independent stellar masses is derivation from the orbit of close binaries.
Aims: Our aim was to derive the first astrometric plus radial vel…
Plasma dynamics in the flaring loop observed by RHESSI
Kołomański, S.; Mrozek, T.; Falewicz, R. +1 more
Context. Hard X-rays (HXRs) contain the most direct information about the non-thermal electron population in solar flares. The approximation of the HXR emission mechanism (bremsstrahlung), known as the thick-target model, is well developed. It allows one to diagnose the physical conditions within a flaring structure. The thick-target model predict…
Connecting Solar Orbiter remote-sensing observations and Parker Solar Probe in situ measurements with a numerical MHD reconstruction of the Parker spiral
Telloni, Daniele; Susino, Roberto; Antonucci, Ester +21 more
As a key feature, NASA's Parker Solar Probe (PSP) and ESA-NASA's Solar Orbiter (SO) missions cooperate to trace solar wind and transients from their sources on the Sun to the inner interplanetary space. The goal of this work is to accurately reconstruct the interplanetary Parker spiral and the connection between coronal features observed remotely …
Companions to Kepler giant stars: A long-period eccentric sub-stellar companion to KIC 3526061 and a stellar companion to HD 187878
Cochran, William D.; Vítková, Michaela; Kabáth, Petr +12 more
Context. Our knowledge of populations and the occurrence of planets orbiting evolved intermediate-mass stars is still incomplete. In 2010 we started a planet search programme among 95 giant stars observed by the Kepler mission to increase the sample of giant stars with planets and with reliable estimates of stellar masses and radii.
Aims: We …