Results 51 to 60 of about 2,514,308 (344)
Spectral classification of stars based on LAMOST spectra
, 2015 In this work, we select the high signal-to-noise ratio spectra of stars from the LAMOST data andmap theirMK classes to the spectral features. The equivalentwidths of the prominent spectral lines, playing the similar role as the multi-color photometry ...
Cui, Wen-Yuan +8 more
core +1 more source
Assessment of evolutionary status of eclipsing binaries using light-curve parameters and spectral classification [PDF]
, 2014 We have developed a procedure for the classification of eclipsing binaries from their light-curve parameters and spectral type. The procedure was tested on more than 1000 systems with known classification, and its efficiency was estimated for every ...
Avvakumova, Ekaterina, Malkov, Oleg
core +1 more source
KSwAGS: A Swift X-ray and UV Survey of the Kepler Field. I [PDF]
, 2015 We introduce the first phase of the Kepler-Swift Active Galaxies and Stars survey (KSwAGS), a simultaneous X-ray and UV survey of ~6 square degrees of the Kepler field using the Swift XRT and UVOT.
Boyd, Patricia T. +8 more
core +4 more sources
Automated Classification of Stellar Spectra. II: Two-Dimensional Classification with Neural Networks and Principal Components Analysis [PDF]
, 1997 We investigate the application of neural networks to the automation of MK spectral classification. The data set for this project consists of a set of over 5000 optical (3800-5200 AA) spectra obtained from objective prism plates from the Michigan Spectral
Bailer-Jones, Coryn A. L. +2 more
core +3 more sources
A Population of Dipper Stars from the Transiting Exoplanet Survey Satellite Mission
The Astrophysical Journal Supplement Series, 2022 Dipper stars are a classification of young stellar objects that exhibit dimming variability in their light curves, dropping in brightness by 10%–50%, likely induced by occultations due to circumstellar disk material.
Benjamin K. Capistrant +14 more
doaj +1 more source
45. Stellar Classification [PDF]
Transactions of the International Astronomical Union, 1991 As an introduction to this report I would like to cite two comments from the book MK Process and Stellar Classification (ed. by R.F. Garrison, 1984). The first is from the article by W.W. Morgan The MK system and the MK process: “The MK system furnishes a satisfactory frame of reference for stars of Population I in the solar neighborhood; but when we ...
openaire +1 more source
Classification of Stellar Spectra [PDF]
International Astronomical Union Colloquium, 1990 SummaryThe objectives of this exercise are to gain familiarity with the appearance of the spectra of stars, to understand some of the temperature and luminosity criteria used to classify spectra, and to gain insights into the relationship between the appearance of stellar spectra and physical conditions in stellar atmospheres.
openaire +1 more source
Sickle Cell Disease Is an Inherent Risk for Asthma in a Sibling Comparison Study
Pediatric Blood &Cancer, EarlyView.ABSTRACT Introduction Sickle cell disease (SCD) and asthma share a complex relationship. Although estimates vary, asthma prevalence in children with SCD is believed to be comparable to or higher than the general population. Determining whether SCD confers an increased risk for asthma remains challenging due to overlapping symptoms and the ...
Suhei C. Zuleta De Bernardis +9 more
wiley +1 more source
A machine-vision method for automatic classification of stellar halo substructure [PDF]
Monthly notices of the Royal Astronomical Society, 2018 Tidal debris structures formed from disrupted satellites contain important clues about the assembly histories of galaxies. To date, studies of these structures have been hampered by reliance on by-eye identification and morphological classification ...
D. Hendel +3 more
semanticscholar +1 more source
Pediatric Blood &Cancer, EarlyView.ABSTRACT Purpose Metabolic syndrome (MetS) is a common complication in survivors of childhood acute lymphoblastic and myeloid leukemia (AL), and a major risk factor for premature cardiovascular disease, type‐2‐diabetes, and metabolic dysfunction‐associated steatotic liver disease (MASLD).
Visentin Sandrine +10 more
wiley +1 more source