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Hot moons and cool stars [PDF]
EPJ Web of Conferences, 2013 The exquisite photometric precision of the Kepler space telescope now puts the detection of extrasolar moons at the horizon. Here, we firstly review observational and analytical techniques that have recently been proposed to find exomoons.
Heller René, Barnes Rory
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Observations of Cool-Star Magnetic Fields
Living Reviews in Solar Physics, 2012 Cool stars like the Sun harbor convection zones capable of producing substantial surface magnetic fields leading to stellar magnetic activity. The influence of stellar parameters like rotation, radius, and age on cool-star magnetism, and the importance ...
Ansgar Reiners
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Critical Metallicity of Cool Supergiant Formation. I. Effects on Stellar-mass Loss and Feedback
The Astrophysical Journal, 2023 This paper systematically studies the relation between metallicity and mass loss of massive stars. We perform one-dimensional stellar evolution simulations and build a grid of ∼2000 models with initial masses ranging between 11 and 60 M _⊙ and absolute ...
Po-Sheng Ou +3 more
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The Carbon Star DY Persei May Be a Cool R Coronae Borealis Variable
The Astrophysical Journal, 2023 Optical and near-IR photometry suggests that the carbon star DY Persei exhibits fadings similar to those of R Coronae Borealis (RCB) variables. Photometric surveys of the Galaxy and Magellanic Clouds uncovered new DY Per variables with infrared ...
D. A. García-Hernández +5 more
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Spots and Flares in Hot Main Sequence Stars Observed by Kepler, K2, and TESS
Frontiers in Astronomy and Space Sciences, 2021 About 22,000 Kepler stars, 7,000 K2 stars, and nearly 60,000 TESS stars from sectors 1–24 have been classified according to variability type. A large proportion of stars of all spectral types appear to have periods in their light curves consistent with ...
Luis A. Balona
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The Astrophysical Journal, 2023 Extinction toward the Galactic Center (GC) is extreme and limits observations of its stars to the infrared. In addition, the extinction varies on scales of arcseconds.
Shogo Nishiyama +2 more
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THE MEAN STELLAR SPECTRA OF COOL GIANT STARS
Odessa Astronomical Publications, 2017 The mean values of energy distributions in spectra of cool stars of various spectral types have been found using the Catalogue of spectra of 555 stars.
A. V. Dragunova +2 more
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Infrared spectra of cool stars - nature and models (Review).
Odessa Astronomical Publications, 2017 Problems of modeling of IR spectra of the cool stars are discussed. Some results for M-giants, C-giants, peculiar stars and brown dwarfs are shown.
Ya V. Pavlenko
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EU ABUNDANCES IN ACTIVE AND NON-ACTIVE STARS
Odessa Astronomical Publications, 2010 Eu abundances have been determined for stars observed at high resolution, high signal to noise ratio with the ELODIE spectrograph at the 1.93- m telescope of the Observatoire de Haute Provence (France). Among them more than 30 stars are active stars with
T. I. Gorbaneva, T. V. Mishenina
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HST Low-resolution Stellar Library
The Astrophysical Journal Supplement Series, 2023 In order to provide fundamental stellar spectra that extend into the UV, Hubble Space Telescope’s Space Telescope Imaging Spectrograph targeted 556 stars via proposals GO9088, GO9786, GO10222, and GO13776.
Tathagata Pal +4 more
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