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High-resolution, 3D radiative transfer modelling. IV. AGN-powered dust heating in NGC 1068
Bianchi, S.; Fritz, J.; Galliano, F. +18 more
The star formation rate and the mass of interstellar medium (ISM) have a high predictive power for the future evolution of a galaxy. Nevertheless, deriving such properties is not straightforward. Dust emission, an important diagnostic of star formation and ISM mass throughout the Universe, can be powered by sources unrelated to ongoing star format…
Molecule-dependent oxygen isotopic ratios in the coma of comet 67P/Churyumov-Gerasimenko
Altwegg, K.; Balsiger, H.; Fuselier, S. A. +9 more
The ratios of the three stable oxygen isotopes 16O, 17O, and 18O on the Earth and, as far as we know in the Solar system, show variations on the order of a few per cent at most, with a few outliers in meteorites. However, in the interstellar medium there are some highly fractionated oxygen isotopic ratios in some s…
The Correlation of Outflow Kinematics with Star Formation Rate. VI. Gas Outflows in AGNs
Rakshit, Suvendu; Woo, Jong-Hak; Son, Donghoon
We investigate the connection between ionized gas outflows and star formation activity using a large sample of type 1 and 2 active galactic nuclei (AGNs) with far-infrared detections or star formation rate (SFR) estimates. The strength of ionized gas outflows, measured by the velocity dispersion and velocity shift of the [O III] emission line, cle…
CMZoom. II. Catalog of Compact Submillimeter Dust Continuum Sources in the Milky Way's Central Molecular Zone
Ho, Luis C.; Ott, Jürgen; Lu, Xing +19 more
In this paper we present the CMZoom survey's catalog of compact sources (<10″, ∼0.4 pc) within the central molecular zone (CMZ). CMZoom is a Submillimeter Array large program designed to provide a complete and unbiased map of all high column density gas (N(H2) ≥ 1023 cm-2) of the innermost 500 pc of the Galaxy i…
A search for variable subdwarf B stars in TESS full frame images - I. Variable objects in the southern ecliptic hemisphere
Sahoo, S. K.; Baran, A. S.; Ostrowski, J. +1 more
We report the results of our search for pulsating subdwarf B stars in full frame images, sampled at 30 min cadence and collected during Year 1 of the TESS mission. Year 1 covers most of the southern ecliptic hemisphere. The sample of objects we checked for pulsations was selected from a subdwarf B stars data base available to public. Only two posi…
Search for decaying eV-mass axion-like particles using gamma-ray signal from blazars
Neronov, A.; Semikoz, D.; Korochkin, A.
Decaying axion-like particles (ALP) with masses in the eV range which might occupy dark matter halos of the Milky Way and other galaxies produce a characteristic "bump" feature in the spectrum of extragalactic background light (EBL). This feature leaves an imprint on the gamma-ray spectra of distant extragalactic sources. We derive constraints on …
Time variability of the Enceladus plumes: Orbital periods, decadal periods, and aperiodic change
Ingersoll, Andrew P.; Ewald, Shawn P.; Trumbo, Samantha K.
The Enceladus plumes vary on a number of timescales. Tidal stresses as Enceladus revolves in its eccentric orbit lead to a periodic diurnal variation in the mass and velocity of solid particles in the plume. Tidal stresses associated with an orbital resonance with Dione lead to a periodic decadal variation. Aperiodic variations occur on time scale…
Correcting for chromatic stellar activity effects in transits with multiband photometric monitoring: application to WASP-52
Granzer, T.; Mallonn, M.; Ribas, I. +5 more
Context. The properties, distribution, and evolution of inhomogeneities on the surface of active stars, such as dark spots and bright faculae, significantly influence the determination of the parameters of an orbiting exoplanet. The chromatic effect they have on transmission spectroscopy, for example, could affect the analysis of data from future …
Establishing Earth's Minimoon Population through Characterization of Asteroid 2020 CD3
Fedorets, Grigori; Granvik, Mikael; Schwamb, Megan E. +20 more
We report on our detailed characterization of Earth's second known temporary natural satellite, or minimoon, asteroid 2020 CD3. An artificial origin can be ruled out based on its area-to-mass ratio and broadband photometry, which suggest that it is a silicate asteroid belonging to the S or V complex in asteroid taxonomy. The discovery o…
Asteroid lightcurve inversion with Bayesian inference
Cellino, A.; Muinonen, K.; Penttilä, A. +2 more
Context. We assess statistical inversion of asteroid rotation periods, pole orientations, shapes, and phase curve parameters from photometric lightcurve observations, here sparse data from the ESA Gaia space mission (Data Release 2) or dense and sparse data from ground-based observing programs.
Aims: Assuming general convex shapes, we develop…