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The extinction law in the inner 3 × 3 deg 2of the Milky Way and the red clump absolute magnitude in the inner bar-bulge
(2022-08-01)
The extinction law from 0.9 to 8 microns in the inner 3x3 deg^2 of the Milky Way is measured using data from VISTA Variables in the Via Lactea, GLIMPSE and WISE. Absolute extinction ratios are found by requiring that the ...
The origin of elements: the need for UV spectra
(2022-07-23)
Thanks to the long-term collaborations between nuclear and astrophysics, we have good understanding on stellar nucleosynthesis, except for the elements around Ti and some neutron-capture elements. From the comparison between ...
Subarcsecond view on the high-redshift blazar GB 1508+5714 by the International LOFAR Telescope
(2022-07-12)
Context. Studies of the most distant active galactic nuclei (AGNs) allow us to test our current understanding of the physics present in radio-jetted AGNs across a range of environments, and probe their interactions with ...
Faraday tomography of LoTSS-DR2 data : I. Faraday moments in the high-latitude outer Galaxy and revealing Loop III in polarisation
(2022-07-01)
Context. Observations of synchrotron emission at low radio frequencies reveal a labyrinth of polarised Galactic structures. However, the explanation for the wealth of structures remains uncertain due to the complex ...
The VVV Open Cluster Project II. Near-infrared sequences of 37 open clusters on eight-dimensional parameter space
(2022-07-01)
Open clusters are key coeval structures that help us understand star formation, stellar evolution and trace the physical properties of our Galaxy. In the past years, the isolation of open clusters from the field has been ...
Preparing for low surface brightness science with the Vera C. Rubin Observatory: Characterisation of tidal features from mock images
(2022-06-01)
Tidal features in the outskirts of galaxies yield unique information about their past interactions and are a key prediction of the hierarchical structure formation paradigm. The Vera C. Rubin Observatory is poised to deliver ...
The KLEVER survey: nitrogen abundances at z ∼ 2 and probing the existence of a fundamental nitrogen relation
(2022-05-30)
We present a comparison of the nitrogen-to-oxygen ratio (N/O) in 37 high-redshift galaxies at z ∼2 taken from the KMOS Lensed Emission Lines and VElocity Review (KLEVER) Survey with a comparison sample of local galaxies, ...
The Planck clusters in the LOFAR sky. I. LoTSS-DR2 new detections and sample overview
(2022-04-30)
Context. Relativistic electrons and magnetic fields permeate the intra-cluster medium (ICM) and manifest themselves as diffuse sources of synchrotron emission observable at radio wavelengths, namely radio halos and radio ...
The Decoupled Kinematics of High- z QSO Host Galaxies and Their Ly α Halos
(2022-04-15)
We present a comparison of the interstellar medium traced by [C ii] (Atacama Large Millimeter/submillimeter Array), and ionized halo gas traced by Lyα (Multi Unit Spectroscopic Explorer), in and around QSO host galaxies ...
Ultracool dwarfs identified using spectra in LAMOST DR7
(2022-04-05)
In this work, we identify 734 ultracool dwarfs with a spectral type of M6 or later, including one L0. Of this sample, 625 were studied spectroscopically for the first time. All of these ultracool dwarfs are within 360~pc, ...