Search Publications
Coevolution of black hole accretion and star formation in galaxies up to z = 3.5
Daddi, E.; Rodighiero, G.; Franceschini, A. +15 more
Aims: We study the coevolution between the black hole accretion rate (BHAR) and the star formation rate (SFR) in different phases of galaxy life: main-sequence star-forming galaxies, quiescent galaxies, and starburst galaxies at different cosmic epochs.
Methods: We exploited the unique combination of depth and area in the COSMOS field an…
GIARPS High-resolution Observations of T Tauri stars (GHOsT). II. Connecting atomic and molecular winds in protoplanetary disks
Munari, U.; Alcalá, J. M.; Manara, C. F. +10 more
Context. Disk winds play a fundamental role in the evolution of protoplanetary systems. The complex structure and dynamics can be investigated through the emission of atomic and molecular lines detected in high-resolution optical/IR spectra of young stellar objects. Despite their great importance, however, studies connecting the atomic and molecul…
MASCARA-4 b/bRing-1 b: A retrograde hot Jupiter around a bright A-type star
Snellen, I.; Kenworthy, M.; Wyttenbach, A. +26 more
Context. The Multi-site All-Sky CAmeRA (MASCARA) and bRing are both photometric ground-based instruments with multiple stations that rely on interline charge-coupled devices with wide-field lenses to monitor bright stars in the local sky for variability. MASCARA has already discovered several planets in the northern sky, which are among the bright…
The rotation period distribution of the rich Pleiades-age southern open cluster NGC 2516. Existence of a representative zero-age main sequence distribution
Strassmeier, K. G.; Barnes, S. A.; James, D. J. +1 more
Aims: We wish to measure the cool star rotation period distribution for the Pleiades-age rich open cluster NGC 2516 and use it to determine whether cluster-to-cluster variations exist in otherwise identical open clusters.
Methods: We obtained 42 d-long time-series CCD photometry of NGC 2516 in the V and Ic filters using the Ya…
First observation of the magnetic dipole CO2 absorption band at 3.3 µm in the atmosphere of Mars by the ExoMars Trace Gas Orbiter ACS instrument
Montmessin, F.; Korablev, O.; Bertaux, J. -L. +8 more
The atmosphere of Mars is dominated by CO2, making it a natural laboratory for studying CO2 spectroscopy. The Atmospheric Chemistry Suite (ACS) on board the ExoMars Trace Gas Orbiter uses solar occultation geometry to search for minor atmospheric species. During the first year of ACS observations, the attention was focused on…
Gaia-DR2 extended kinematical maps. II. Dynamics in the Galactic disk explaining radial and vertical velocities
Wang, H. -F.; López-Corredoira, M.; Chang, J. +5 more
Context. In our Paper I, by using statistical deconvolution methods, extended kinematics maps of Gaia-DR2 data have been produced in a range of heliocentric distances that are a factor of two to three larger than those analyzed previously by the Gaia Collaboration with the same data. It added the range of Galactocentric distances between 13 kpc an…
Chemical abundances of 1111 FGK stars from the HARPS-GTO planet search sample. III. Sulfur
Tsantaki, M.; Costa Silva, A. R.; Delgado Mena, E.
Context. Elemental abundances are of prime importance to help us reconstruct the origin and evolution of stars and galaxies in our Universe. Sulfur abundances have not been as heavily studied as other elements, so some details regarding their behaviour are still unclear.
Aims: We aim to investigate [S/Fe] ratios in stars of the solar neighbou…
NGC 4993, the shell galaxy host of GW170817: constraints on the recent galactic merger
Ebrová, I.; Bílek, M.; Yıldız, M. K. +1 more
Context. NGC 4993 is the shell galaxy host of the GRB170817A short gamma-ray burst and the GW170817 gravitational-wave event produced during a binary-neutron-star coalescence.
Aims: The galaxy shows signs, including the stellar shells, that it has recently accreted a smaller, late-type galaxy. The accreted galaxy might be the original host of…
The soft excess of the NLS1 galaxy Mrk 359 studied with an XMM-Newton-NuSTAR monitoring campaign
Bianchi, S.; Cappi, M.; Petrucci, P. -O. +7 more
Context. Joint XMM-Newton and NuSTAR multiple exposures allow us to disentangle the different emission components of active galactic nuclei (AGNs) and to study the evolution of their different spectral features. In this work, we present the timing and spectral properties of five simultaneous XMM-NewtonandNuSTAR observations of the Narrow Line Seyf…
Extended stellar systems in the solar neighborhood. IV. Meingast 1: the most massive stellar stream in the solar neighborhood
Meingast, Stefan; Alves, João; Ratzenböck, Sebastian +2 more
Context. Nearby stellar streams carry unique information on the dynamical evolution and disruption of stellar systems in the Galaxy, the mass distribution in the disk, and they provide unique targets for planet formation and evolution studies. Recently, Meingast 1, a 120° stellar stream with a length of at least 400 pc, was dicovered.
Aims: W…