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59 papers · 2 filters
V-LoTSS: The Circularly-Polarised LOFAR Two-metre Sky Survey
J. R. Callingham, T. W. Shimwell, H. K. Vedantham +44
We present the detection of 68 sources from the most sensitive radio survey in circular polarisation conducted to date. We use the second data release of the 144 MHz LOFAR Two-metr…
A high resolution study of near-IR diffuse interstellar bands, search for small scale structure, time variability and stellar features
J. V. Smoker, A. Müller, A. Monreal Ibero +13
Diffuse interstellar bands comprise hundreds of absorption features in the ISM. Most DIBs are observed in the optical, but some are in the IR. We observed 76 early-type stars at R=…
The phase spiral in Gaia DR3
T. Antoja, P. Ramos, B. García-Conde +3
We aim to study the phase spiral in the Milky Way (MW) with Gaia DR3. We used an edge detection algorithm to find the border of the phase spiral, allowing us to robustly quantify i…
The metallicity distribution in the core of the Sagittarus dwarf spheroidal: minimising the metallicity biases
Alice Minelli, Michele Bellazzini, Alessio Mucciarelli +7
We present metallicity and radial velocity for 450 bonafide members of the Sagittarius dwarf spheroidal (Sgr dSph) galaxy, measured from high resolution (R~18000) FLAMES@VLT spectr…
Sulfur abundances in three Galactic clusters: Ruprecht 106, Trumpler 5 and Trumpler 20
F. Lucertini, L. Monaco, E. Caffau +4
Context. Sulfur (S) is one of the lesser-studied -elements. Published investigations of its behavior have so far focused on local stars, and only a few clusters of the Milky Way…
Dissecting the interstellar medium of a z=6.3 galaxy: X-shooter spectroscopy and HST imaging of the afterglow and environment of the Swift GRB 210905A
A. Saccardi, S. D. Vergani, A. De Cia +35
The study of the properties of galaxies in the first billion years after the Big Bang is one of the major topic of current astrophysics. Optical/near-infrared spectroscopy of the a…