Results 31 to 40 of about 2,528,028 (339)

Stellar classification from simulated DIVA spectra. I. Solar metallicity stars

open access: yesOpen Astronomy, 1999
. The orbiting telescope with the Double Interferometer for Visual Astrometry (DIVA) will obtain, apart from astrometry, low-resolution spectra (A/AA ~ 20) covering the optical range (350 to 1000 nm) for over 10 million stars.
Elsner B.   +3 more
doaj   +2 more sources

Quantitative Stellar Classification with Low-Resolution Spectroscopy [PDF]

open access: bronzeProceedings of the International Astronomical Union, 2012
AbstractLow-resolution spectroscopy (R ≈ 1000) is used to efficiently characterize faint stars suspected to host planets. Stellar parameters, i.e. effective temperature, surface gravity, and metallicity can be assessed from these spectra by methods of quantitative classification.
Daniel Sebastian   +2 more
openaire   +3 more sources

Automated Stellar Classification for Large Surveys with EKF and RBF Neural Networks [PDF]

open access: bronze, 2005
An automated classification technique for large size stellar surveys is proposed. It uses the extended Kalman filter as a feature selector and pre-classifier of the data, and the radial basis function neural networks for the classification.
Ling Bai, Ping Guo, Zhanyi Hu
openalex   +2 more sources

A Comparative Study of KBS, ANN and Statistical Clustering Techniques for Unattended Stellar Classification [PDF]

open access: bronzeIberoamerican Congress on Pattern Recognition, 2005
Carlos Dafonte   +4 more
openalex   +2 more sources

Automatic Extraction and Classification of Low-Dispersion Objective-Prism Stellar Spectra [PDF]

open access: bronzeOpen Astronomy, 2000
Bratsolis E.   +5 more
doaj   +4 more sources

Towards a Multi-Dimensional Stellar Classification System

open access: yesOpen Astronomy, 1997
Rui J. Agostinho   +4 more
openaire   +3 more sources

Gaia Data Release 3. Apsis. III. Non-stellar content and source classification [PDF]

open access: yesAstronomy & Astrophysics, 2022
Context. As part of the third Gaia data release, we present the contributions of the non-stellar and classification modules from the eighth coordination unit (CU8) of the Data Processing and Analysis Consortium, which is responsible for the determination
L. Delchambre   +80 more
semanticscholar   +1 more source

The Classification of Stellar Spectra

open access: bronzeThe Astrophysical Journal, 1935
N. Russell   +2 more
openaire   +3 more sources

Machine learning based stellar classification with highly sparse photometry data. [PDF]

open access: goldOpen Res Eur
Cody SE   +5 more
europepmc   +2 more sources

Mira variables in the Milky Way’s nuclear stellar disc: discovery and classification [PDF]

open access: yesMonthly notices of the Royal Astronomical Society, 2022
The properties of the Milky Way’s nuclear stellar disc give crucial information on the epoch of bar formation. Mira variables are promising bright candidates to study the nuclear stellar disc, and through their period–age relation dissect its star ...
J. Sanders   +5 more
semanticscholar   +1 more source

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