The AMBRE project: The thick thin disk and thin thick disk of the Milky Way [PDF]
Astronomy & Astrophysics, 2017 We analyze 494 main sequence turnoff and subgiant stars from the AMBRE:HARPS survey. These stars have accurate astrometric information from Gaia DR1, providing reliable age estimates with relative uncertainties of ±1 or 2 Gyr and allowing precise orbital determinations. The sample is split based on chemistry into a low-[Mg/Fe] sequence, which are often
Hayden, M. R. +4 more
openaire +5 more sources
Polarized image of a Schwarzschild black hole with a thin accretion disk as photon couples to Weyl tensor [PDF]
European Physical Journal C: Particles and Fields, 2021 We have studied polarized image of a Schwarzschild black hole with an equatorial thin accretion disk as photon couples to Weyl tensor. The birefringence of photon originating from the coupling affect the black hole shadow, the thin disk pattern and its ...
Zelin Zhang +3 more
doaj +2 more sources
The Ages of the Thin Disk, Thick Disk, and the Halo from Nearby White Dwarfs [PDF]
, 2017 We present a detailed analysis of the white dwarf luminosity functions derived from the local 40 pc sample and the deep proper motion catalog of Munn et al (2014, 2017).
DeGennaro, Steven +7 more
core +2 more sources
Spatial hole burning in thin-disk lasers and twisted-mode operation [PDF]
Applied Optics, 2018 Spatial hole burning prevents single-frequency operation of thin-disk lasers when the thin disk is used as a folding mirror. We present an evaluation of the saturation effects in the disk for disks acting as end-mirrors and as folding-mirrors explaining ...
Antognini, Aldo +5 more
core +2 more sources
Hot-mode accretion and the physics of thin-disk galaxy formation [PDF]
Monthly notices of the Royal Astronomical Society, 2022 We use FIRE simulations to study disk formation in z ∼ 0, Milky Way-mass galaxies, and conclude that a key ingredient for the formation of thin stellar disks is the ability for accreting gas to develop an aligned angular momentum distribution via ...
Zachary Hafen +18 more
semanticscholar +1 more source
Observable characteristics of the charged black hole surrounded by thin disk accretion in Rastall gravity [PDF]
Classical and quantum gravity, 2022 The observable characteristics of the charged black hole (BH) surrounded by a thin disk accretion are investigated in the Rastall gravity. We found that the radii of the direct emission, lensing ring, and photon ring dramatically increased as the ...
Sen Guo, Guan-Ru Li, Enwei Liang
semanticscholar +1 more source
Shadows and rings of the Kehagias-Sfetsos black hole surrounded by thin disk accretion [PDF]
Journal of Cosmology and Astroparticle Physics, 2021 In this paper, under the illumination of thin disk accretion, we have employed the ray-tracing method to carefully investigate shadows and rings of the Kehagias-Sfetsos(KS) black hole in deformed Hořava-Lifshitz(HL) gravity.
Guo-Ping Li, Ke-Jian He
semanticscholar +1 more source
The Flattening Metallicity Gradient in the Milky Way’s Thin Disk [PDF]
Astrophysical Journal, 2021 We calculate the ages, orbits and phase-space coordinates for a sample of ∼4 million LAMOST and Gaia stars. The ages are cross-matched and compared with values from two other popular age catalogs, which derive the ages using different methods.
John J. Vickers, Juntai Shen, Zhao-Yu Li
semanticscholar +1 more source
Picosecond thin-disk laser platform PERLA for multi-beam micromachining
, 2021 Multi-beam micro- and nano-machining of material surfaces has been getting more important because of its great potential to increase production speed of large size laser induced periodic surface structures (LIPSS). Fast and cheap production of engineered
M. Smrž +10 more
semanticscholar +1 more source
The Newtonian potential of thin disks [PDF]
Astronomy & Astrophysics, 2011 Accepted for publication in A& ...
Franck Hersant +3 more
openaire +4 more sources