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arxiv 2004.07627 v1 pith:NKY6ORMR submitted 2020-04-16 astro-ph.SR

Statistical relations between stellar spectral and luminosity classes and stellar effective temperature and surface gravity

O. Yu. Malkov , D. A. Kovaleva , S. G. Sichevsky , G. Zhao This is my paper
classification astro-ph.SR
keywords relationsspectralstellaratmosphericclassificationeffectivegiantsgravity
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We have determined new statistical relations to estimate the fundamental atmospheric parameters of effective temperature and surface gravity, using MK spectral classification, and vice versa. The relations were constructed based on the published calibration tables (for main sequence stars) and observational data from stellar spectral atlases (for giants and supergiants). These new relations were applied to field giants with known atmospheric parameters, and the results of the comparison of our estimations with available spectral classification had been quite satisfactory.

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    astro-ph.SR 2026-07 conditional novelty 4.0

    TESS and ground-based photometry of two low-mass eclipsing binaries yield improved stellar parameters, evidence for tertiary companions via the light-time effect, and a flare frequency of one per 40 hours for NSVS 01031772.