Results 1 to 10 of about 4,432 (267)
Accelerating Stellar Photometric Distance Estimates with Neural Networks
The Astronomical JournalBuilding on the Bayesian approach to estimating stellar distances from broadband photometry, we show that the computation can be accelerated by about an order of magnitude by using neural networks. Focusing on the case of the ugrizy filter complement for
Karlo Mrakovčić +2 more
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The Astrophysical Journal, 2023 We present precise photometric estimates of stellar parameters, including effective temperature, metallicity, luminosity classification, distance, and stellar age, for nearly 26 million stars using the methodology developed in the first paper of this ...
Yang Huang +20 more
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Research on the Detection Method of Projection Stellar Target Simulator
Photonics, 2023 The projection stellar target simulator is a stellar target simulator in which star points are projected to be imaged on a fixed plane at a fixed distance.
Jianan Kang +4 more
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The Astronomical Journal, 2023 The absolute age of a simple stellar population is of fundamental interest for a wide range of applications but is difficult to measure in practice, as it requires an understanding of the uncertainties in a variety of stellar evolution processes as well ...
Jiaqi (Martin) Ying +5 more
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The Astronomical Journal, 2023 The accuracy of stellar distances inferred purely from parallaxes degrades rapidly with distance. Proper motion measurements, when combined with some idea of typical velocities, provide independent information on stellar distances.
C. A. L. Bailer-Jones
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The Astrophysical Journal, 2023 The tip of the red giant branch (TRGB) is an apparent discontinuity of the luminosity function (LF) due to the end of the red giant evolutionary phase and is used to measure distances in the local universe.
J. Wu +7 more
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A Catalog of Distance Determinations for the LAMOST DR8 K Giants in the Galactic Halo
The Astronomical Journal, 2023 We present a catalog of distances for 19,544 K giants drawn from Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) DR8. Most of them are located in the halo of the Milky Way up to ∼120 kpc.
Lan Zhang +6 more
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The Astrophysical Journal Supplement Series, 2023 This investigation is mainly focused on the LSST Survey Strategy Optimization process, a bottom-up approach that turned out to be quite effective in involving the scientific community in the definition of the LSST observing strategy.
M. Di Criscienzo +13 more
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Modeling of Magnetospheres of Terrestrial Exoplanets in the Habitable Zone around G-Type Stars
Universe, 2022 Using a paraboloid model of an Earth-like exoplanetary magnetospheric magnetic field, developed from a model of the Earth, we investigate the magnetospheric structure of planets located in the habitable zone around G-type stars.
Elena S. Belenkaya +2 more
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Empirical 2MASS–WFC3/IR Filter Transformations Across the H-R Diagram from Synthetic Photometry
The Astronomical Journal, 2023 Near-infrared bandpasses on spaceborne observatories diverge from their ground-based counterparts as they are free of atmospheric telluric absorption.
M. J. Durbin +4 more
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