The main sequence of quasars: The taming of the extremes
Sign Up to like & getrecommendations! Published in 2021 at "Astronomische Nachrichten"
DOI: 10.1002/asna.20210082
Abstract: 1Padua Astronomical Observatory, National Institute for Astrophysics (INAF), Padua, Country name 2 Astronomical Observatory, Belgrade, Serbia 3Department of Physics and Astronomy “Galileo Galilei”, University of Padua, Padua, Italy 4ICRA, Physics Department, University La Sapienza, Rome,… read more here.
Keywords: quasars taming; main sequence; physics; sequence quasars ... See more keywords
The 2016-2017 peak luminosity of the pre-main sequence variable V2492 Cygni
Sign Up to like & getrecommendations! Published in 2018 at "Astronomy and Astrophysics"
DOI: 10.1051/0004-6361/201731611
Abstract: Context. V2492 Cyg is a young pre-main sequence star presenting repetitive brightness variations of significant amplitude (R - 5 mag) whose physical origin has been ascribed to both extinction (UXor-type) and accretion (EXor-type) variability, although… read more here.
Keywords: pre main; v2492; accretion; main sequence ... See more keywords
Simulation of the small-scale magnetism in main-sequence stellar atmospheres
Sign Up to like & getrecommendations! Published in 2018 at "Astronomy and Astrophysics"
DOI: 10.1051/0004-6361/201731945
Abstract: Context: Observations of the Sun tell us that its granular and subgranular small-scale magnetism has significant consequences for global quantities such as the total solar irradiance or convective ... read more here.
Keywords: scale magnetism; main sequence; simulation small; magnetism main ... See more keywords
Tidally perturbed pulsations in the pre-main sequence δ Scuti binary RS Cha
Sign Up to like & getrecommendations! Published in 2020 at "Astronomy and Astrophysics"
DOI: 10.1051/0004-6361/202039093
Abstract: Stellar components in binaries are subject to tidal forces which influence asteroseismic properties. Tidally pertubed pulsations have been reported for different objects but none of these are in their pre-main sequence phase of evolution. This… read more here.
Keywords: pre main; binary cha; main sequence; tidally perturbed ... See more keywords
Mapping the core of the Tarantula Nebula with VLT-MUSE
Sign Up to like & getrecommendations! Published in 2021 at "Astronomy and Astrophysics"
DOI: 10.1051/0004-6361/202040008
Abstract: We present the spectroscopic analysis of 333 OB-type stars extracted from VLT-MUSE observations of the central 30 x 30 pc of NGC 2070 in the Tarantula Nebula on the Large Magellanic Cloud, the majority of… read more here.
Keywords: vlt muse; tarantula nebula; main sequence;
Stellar parameters of main sequence turn-off star candidates observed with LAMOST and Kepler
Sign Up to like & getrecommendations! Published in 2017 at "Research in Astronomy and Astrophysics"
DOI: 10.1088/1674-4527/17/1/5
Abstract: Main sequence turn-off (MSTO) stars have advantages as indicators of Galactic evolution since their ages can be robustly estimated from atmospheric parameters. Hundreds of thousands of MSTO stars have been selected from the LAMOST Galactic… read more here.
Keywords: star candidates; stellar parameters; main sequence; sequence turn ... See more keywords
Mon-735: a new low-mass pre-main-sequence eclipsing binary in NGC 2264
Sign Up to like & getrecommendations! Published in 2020 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/staa1016
Abstract: We present Mon-735, a detached double-lined eclipsing binary (EB) member of the ∼3 Myr old NGC 2264 star-forming region, detected by Spitzer. We simultaneously model the Spitzer light curves, follow-up Keck/HIRES radial velocities, and the… read more here.
Keywords: pre main; eclipsing binary; mon 735; mass ... See more keywords
On the origin of the bimodal rotational velocity distribution in stellar clusters: rotation on the pre-main sequence
Sign Up to like & getrecommendations! Published in 2020 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/staa1332
Abstract: We address the origin of the observed bimodal rotational distribution of stars in massive young and intermediate age stellar clusters. This bimodality is seen as split main sequences at young ages and also has been… read more here.
Keywords: pre main; main sequence; stellar clusters; bimodal rotational ... See more keywords
The nearby spiral density-wave structure of the Galaxy: line-of-sight velocities of the Gaia DR2 main-sequence A, F, G, and K stars
Sign Up to like & getrecommendations! Published in 2020 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/staa357
Abstract: Distances and velocities of $\approx \!2400\, 000$ main-sequence A, F, G, and K stars are collected from the second data release of ESA's Gaia astrometric mission. This material is analysed to find evidence of radial… read more here.
Keywords: galaxy; sequence stars; spiral density; main sequence ... See more keywords
Stars in the local galactic thick disk and halo in gaia EDR3: A catalogue of half a million local main-sequence stars with photometric metallicities
Sign Up to like & getrecommendations! Published in 2021 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stab3671
Abstract: We present a catalogue of 551,214 main-sequence stars in the local (d < 2 kpc) Galactic thick disk and halo, based on a search of stars with large proper motions ($\mu _{\rm tot} > 40.0~\rm mas\,… read more here.
Keywords: thick disk; sequence stars; main sequence; stars local ... See more keywords
Numerical experiments to help understand cause and effect in massive star evolution
Sign Up to like & getrecommendations! Published in 2022 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stac538
Abstract: The evolution of massive stars is affected by a variety of physical processes including convection, rotation, mass loss and binary interaction. Because these processes modify the internal chemical abundance profiles in multiple ways simultaneously, it… read more here.
Keywords: cause; main sequence; numerical experiments; evolution ... See more keywords