Search Publications
SuperCAM CO(3-2) APEX survey at a 6 pc resolution in the Small Magellanic Clouds
Bolatto, A. D.; Rubio, M.; Bergman, P. +9 more
Context. The Small Magellanic Cloud (SMC) is an ideal laboratory for studying the properties of star-forming regions thanks to its low metallicity, which has an impact on the molecular gas abundance. However, a small number of molecular gas surveys of the entire galaxy have been carried out in the last few years, limiting the measurements of inter…
Pulsating hydrogen-deficient white dwarfs and pre-white dwarfs observed with TESS. VI. Asteroseismology of the GW Vir-type central star of the Planetary Nebula NGC 246
Córsico, Alejandro H.; Bell, Keaton J.; Uzundag, Murat +7 more
Context. Significant advances have been achieved through the latest improvements in the photometric observations accomplished by the recent space missions, which substantially boost the study of pulsating stars via asteroseismology. The TESS mission has already proven to be of particular relevance for pulsating white dwarf and pre-white dwarf star…
CARMENES input catalogue of M dwarfs: VIII. Kinematics in the solar neighbourhood
Amado, P. J.; Caballero, J. A.; Reiners, A. +15 more
Aims. Our goals are to characterise the kinematic properties and to identify young and old stars among the M dwarfs of the CARMENES input catalogue. Methods. We compiled the spectral types, proper motions, distances, and radial velocities for 2187 M dwarfs. We used the public code SteParKin to derive their galactic space velocities and identify me…
The red giant branch tip in the SDSS, PS1, JWST, NGRST, and Euclid photometric systems: Calibration in optical passbands using Gaia DR3 synthetic photometry
Bellazzini, M.; Pascale, R.
We used synthetic photometry from Gaia DR3 BP and RP spectra for a large selected sample of stars in the Large Magellanic Cloud (LMC) and Small Magellanic Cloud (SMC) to derive the magnitude of the red giant branch (RGB) tip for these two galaxies in several passbands across a range of widely used optical photometric systems, including those of sp…
Eruptive events with exceptionally bright emission in H I Ly-α observed by the Metis coronagraph
Heinzel, P.; Jejčič, S.; Sasso, C. +29 more
Context. Ultraviolet (UV) emission from coronal mass ejections can provide information on the evolution of plasma dynamics, temperature, and elemental composition, as demonstrated by the UV Coronagraph Spectrometer (UVCS) on board the SOlar and Heliospheric Observatory (SOHO). Metis, the coronagraph on board Solar Orbiter, provides for the first t…
VLBI position variability of AGNs is inversely correlated with their photometric variability
Lambert, S.; Secrest, N. J.
Aims: The stability of the International Celestial Reference Frame (ICRF), realized through geodetic very long baseline interferometry (VLBI) positions of thousands of extragalactic objects, is dependent on the individual positional stability of these objects. It has been recently shown that the prevalence of offsets between the VLBI position…
Limitations and rotation of the two-armed phase spiral in the Milky Way stellar disc
McMillan, P. J.; Bensby, T.; Alinder, S.
Context. The Milky Way's history of recent disturbances is vividly demonstrated by a structure in the vertical phase-space distribution known as the Gaia phase spiral. A one-armed phase spiral has been seen widely across the Milky Way disc, while a two-armed one has only been observed in the solar neighbourhood. Aims. This study aims to determine …
Revealing the burning and soft heart of the bright bare active galactic nucleus ESO 141-G55: X-ray broadband and SED analysis
Grosso, N.; Porquet, D.; Reeves, J. N. +4 more
Context. ESO 141-G55 is a nearby X-ray bright broad-line Seyfert 1 (BLS1) that has been classified as a bare active galactic nucleus (AGN) due to a lack of warm absorption along its line of sight, providing an unhampered view into its disc-corona system. Aims. We aim to probe its disc-corona system thanks to the first simultaneous XMM-Newton and N…
Investigating X-ray emission in the GeV-emitting compact symmetric objects PKS 1718-649 and TXS 1146+596
Vignali, C.; Giroletti, M.; Stawarz, Ł. +8 more
Aims: Compact symmetric objects (CSOs) are thought to represent the first step in the evolutionary path of radio galaxies. In the present study, we investigated the X-ray emission of two CSOs confirmed to emit at GeV energies: PKS 1718-649 and TXS 1146+596. Unveiling the origin of their observed high-energy emission is crucial to establishing…
The population of young low-mass stars in Trumpler 14
Testi, Leonardo; Reiter, Megan; Hennebelle, Patrick +8 more
Massive star-forming regions are thought to be the most common birth environments in the Galaxy and the only birth places of very massive stars. Their presence in the stellar cluster alters the conditions within the cluster, impacting at the same time the evolution of other cluster members. In principle, copious amounts of ultraviolet radiation pr…