Results 41 to 50 of about 2,528,028 (339)
TESS Data for Asteroseismology (T’DA) Stellar Variability Classification Pipeline: Setup and Application to the Kepler Q9 Data [PDF]
Astronomical Journal, 2021 The NASA Transiting Exoplanet Survey Satellite (TESS) is observing tens of millions of stars with time spans ranging from ∼27 days to about 1 yr of continuous observations.
J. Audenaert +18 more
semanticscholar +1 more source
Stellar Classification based on Various Star Characteristics using Machine Learning Algorithms
Journal of student-scientists' research, 2023 The task of stellar classification can be tedious and lengthy when done manually. One can expedite stellar classification by creating an artificial intelligence model to automate the process.
Jesus Tamez Villarreal, Sophia Barton
semanticscholar +1 more source
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
doaj +1 more source
BCD Spectrophotometry and Rotation of Active B-Type Stars: Theory and Observations
Galaxies, 2023 This review has two parts. The first one is devoted to the Barbier–Chalonge–Divan (BCD) spectrophotometric system, also known as the Paris spectral classification system.
Juan Zorec
doaj +1 more source
“In-System” Fission-Events: An Insight into Puzzles of Exoplanets and Stars?
Universe, 2021 In expansion of our recent proposal that the solar system’s evolution occurred in two stages—during the first stage, the gaseous giants formed (via disk instability), and, during the second stage (caused by an encounter with a particular stellar-object ...
Elizabeth P. Tito, Vadim I. Pavlov
doaj +1 more source
The SAMI Galaxy Survey: a statistical approach to an optimal classification of stellar kinematics in galaxy surveys [PDF]
Monthly notices of the Royal Astronomical Society, 2020 Large galaxy samples from multiobject integral field spectroscopic (IFS) surveys now allow for a statistical analysis of the z ∼ 0 galaxy population using resolved kinematic measurements.
J. van de Sande +24 more
semanticscholar +1 more source
The Nature of Blue Stars with Mid-infrared Excesses in the Large Magellanic Cloud
The Astrophysical Journal Supplement Series, 2023 We present low-resolution optical spectra and classifications of 92 blue objects with mid-infrared excesses in the Large Magellanic Cloud. The majority of these objects were selected with the criteria of U − B < 0 and V < 17 from the potential young ...
Ryoko Ishioka +5 more
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POSYDON: A General-purpose Population Synthesis Code with Detailed Binary-evolution Simulations
The Astrophysical Journal Supplement Series, 2023 Most massive stars are members of a binary or a higher-order stellar system, where the presence of a binary companion can decisively alter their evolution via binary interactions. Interacting binaries are also important astrophysical laboratories for the
Tassos Fragos +24 more
doaj +1 more source
Entropy, 2020 This paper analyzes and compares the sensitivity and suitability of several artificial intelligence techniques applied to the Morgan–Keenan (MK) system for the classification of stars.
Carlos Dafonte +4 more
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Spectral Feature Extraction Using Partial and General Method
Advances in Astronomy, 2021 With the rapid growth in astronomical spectra produced by large sky survey telescopes, traditional manual classification processes can no longer fulfill the requirements of precision and efficiency of spectral classification.
Bin Jiang +4 more
doaj +1 more source