Search Publications
Compact disks. An explanation to faint CO emission in Lupus disks
Williams, J. P.; Ansdell, M.; Facchini, S. +4 more
Context. ALMA disk surveys have shown that a large fraction of observed protoplanetary disks in nearby star-forming regions (SFRs) are fainter than expected in CO isotopolog emission. Disks not detected in 13CO line emission are also faint and often unresolved in the continuum emission at an angular resolution of around 0.2 arcsec.
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Preparing for LSST data. Estimating the physical properties of z < 2.5 main-sequence galaxies
Shirley, R.; Buat, V.; Boquien, M. +8 more
Aims: We study how the upcoming Legacy Survey of Space and Time (LSST) data from the Vera C. Rubin Observatory can be employed to constrain the physical properties of normal star-forming galaxies (main-sequence galaxies). Because the majority of the observed LSST objects will have no auxiliary data, we use simulated LSST data and existing rea…
Large closed-field corona of WX Ursae Majoris evidenced from radio observations
Ray, T. P.; Vidotto, A. A.; Callingham, J. R. +5 more
The space-weather conditions that result from stellar winds significantly impact the habitability of exoplanets. The conditions can be calculated from first principles if the necessary boundary conditions are specified, namely the plasma density in the outer corona and the radial distance at which the plasma forces the closed magnetic field into a…
HD 22496 b: The first ESPRESSO stand-alone planet discovery
Rebolo, R.; Pallé, E.; Zapatero Osorio, M. R. +32 more
Context. The ESPRESSO spectrograph is a new powerful tool developed to detect and characterize extrasolar planets. Its design allows an unprecedented radial velocity precision (down to a few tens of cm s−1) and long-term thermomechanical stability.
Aims: We present the first stand-alone detection of an extrasolar planet by blind ra…
Calibration of mid- to far-infrared spectral lines in galaxies
Spinoglio, Luigi; Mordini, Sabrina; Fernández-Ontiveros, Juan Antonio
Context. Mid- to far-infrared (IR) lines are suitable in the study of dust-obscured regions in galaxies because dust extinction strongly decreases with wavelength, and therefore IR spectroscopy allows us to explore the most hidden regions of galaxies, where heavily obscured star formation as well as accretion onto supermassive black holes at the n…
TIC 308396022: δ Scuti-γ Doradus hybrid with large-amplitude radial fundamental mode and regular g-mode period spacing
Li, Gang; Bedding, Timothy R.; Murphy, Simon J. +3 more
We analyse the pulsating behaviour of TIC 308396022, based on observations by the TESS mission. The star is a high-amplitude δ Sct star that shows a very rich amplitude spectrum using the 3-yr light curve. Among these frequencies, the strongest peak of f1 = 13.20362567(12) d−1 is identified as the radial fundamental mode, and…
Radio observations of massive stars in the Galactic centre: The Arches Cluster
Herrero-Illana, R.; Alberdi, A.; Najarro, F. +8 more
We present high-angular-resolution radio observations of the Arches cluster in the Galactic centre, one of the most massive young clusters in the Milky Way. The data were acquired in two epochs and at 6 and 10 GHz with the Karl G. Jansky Very Large Array. The rms noise reached is three to four times better than during previous observations and we …
Submillimeter imaging of the Galactic Center starburst Sgr B2. Warm molecular, atomic, and ionized gas far from massive star-forming cores
Cernicharo, J.; Goicoechea, J. R.; Etxaluze, M. +2 more
Context. Star-forming galaxies emit bright molecular and atomic lines in the submillimeter and far-infrared (FIR) domains. However, it is not always clear which gas heating mechanisms dominate and which feedback processes drive their excitation.
Aims: The Sgr B2 complex is an excellent template to spatially resolve the main OB-type star-formi…
Heavy-elements heritage of the falling sky
de Laverny, Patrick; Recio-Blanco, Alejandra; Helmi, Amina +3 more
Context. A fundamental element of galaxy formation is the accretion of mass through mergers of satellites or gas. Recent dynamical analyses based on Gaia data have revealed major accretion events in the history of the Milky Way. Nevertheless, our understanding of the primordial Galaxy is hindered because the bona fide identification of the most me…
J-PLUS: The star formation main sequence and rate density at d ≲ 75 Mpc
Hernández-Monteagudo, C.; Galbany, L.; Hernán-Caballero, A. +20 more
Aims: Our goal is to estimate the star formation main sequence (SFMS) and the star formation rate density (SFRD) at z ≤ 0.017 (d ≲ 75 Mpc) using the Javalambre Photometric Local Universe Survey (J-PLUS) first data release, that probes 897.4 deg2 with twelve optical bands.
Methods: We extract the Hα emission flux of 805 local g…