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Massive spheroids can form in single minor mergers
(2019-11-01)
Understanding how rotationally supported discs transform into dispersion-dominated spheroids is central to our comprehension of galaxy evolution. Morphological transformation is largely merger-driven. While major mergers ...
JINGLE V : Dust properties of nearby galaxies derived from hierarchical Bayesian SED fitting
(2019-11-01)
We study the dust properties of 192 nearby galaxies from the JINGLE survey using photometric data in the 22-850 μm range. We derive the total dust mass, temperature T, and emissivity index β of the galaxies through the ...
Homogeneously derived transit timings for 17 exoplanets and reassessed TTV trends for WASP-12 and WASP-4
(2019-11)
We homogeneously analyse ∼3.2 × 10 5 photometric measurements for ∼1100 transit light curves belonging to 17 exoplanet hosts. The photometric data cover 16 years (2004–2019) and include amateur and professional observations. ...
Uncertainties in νp-process nucleosynthesis from Monte Carlo variation of reaction rates
(2019-10)
It has been suggested that a νp-process can occur when hot, dense, and proton-rich matter is expanding within a strong flux of antineutrinos. In such an environment, proton-rich nuclides can be produced in sequences of ...
AGN in dwarf galaxies: frequency, triggering processes and the plausibility of AGN feedback
(2019-10-01)
While active galactic nuclei (AGN) are considered to be key drivers of the evolution of massive galaxies, their potentially significant role in the dwarf-galaxy regime (M ∗ < 10 9 M ⊙) remains largely unexplored. We combine ...
He abundances in disc galaxies. I. Predictions from cosmological chemodynamical simulations
(2019-10-01)
We investigate how the stellar and gas-phase He abundances evolve as a function of time within simulated star-forming disc galaxies with different star formation histories. We make use of a cosmological chemodynamical ...
VVV-WIT-04: an extragalactic variable source caught by the VVV Survey
(2019-09-20)
We report the discovery of VVV-WIT-04, a near-infrared (near-IR) variable source towards the Galactic disc located ∼0.2 arcsec apart from the position of the radio source PMN J1515−5559. The object was found serendipitously ...
Brown dwarf census with the Dark Energy Survey year 3 data and the thin disc scale height of early L types
(2019-09-05)
In this paper we present a catalogue of 11 745 brown dwarfs with spectral types ranging from L0 to T9, photometrically classified using data from the Dark Energy Survey (DES) year 3 release matched to the Vista Hemisphere ...
Revisiting the Fanaroff-Riley dichotomy and radio-galaxy morphology with the LOFAR Two-Metre Sky Survey (LoTSS)
(2019-09-01)
The relative positions of the high and low surface brightness regions of radio-loud active galaxies in the 3CR sample were found by Fanaroff and Riley to be correlated with their luminosity. We revisit this canonical ...
A colour-excess extinction map of the southern Galactic disc from the VVV and GLIMPSE surveys
(2019-09-01)
An improved high-resolution and deep A Ks foreground dust extinction map is presented for the Galactic disc area within 295◦ ≾ l ≾ 350◦, −1.0◦ ≾ b ≾ +1.0◦. At some longitudes the map reaches up to |b| ~ 2.25◦, for a total ...