Results 41 to 50 of about 2,275,942 (365)
Metallicities of Globular Clusters m3 and m5 from VI CCD Photometry [PDF]
Journal of Astronomy and Space Sciences, 2000 To derive the metallicities of M3 and M5, we used the shape of red giant branch, horizontal branch magnitude, and red giant branch bump on the (V - I) - V color magnitude diagrams.
Young-Jong Sohn, Hyun-Chul Lee
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Advances in Oceanography and Limnology, 2020 Mediterranean giant red shrimp Aristaeomorpha foliacea (Risso, 1827) is one of the dominant species in deep-sea megafaunal assemblages, plays a key role in deep-sea communities and it is considered one of the most important targets of deep-water trawl ...
Cinzia Podda +4 more
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Giant Planet Occurrence within 0.2 au of Low-luminosity Red Giant Branch Stars with K2 [PDF]
Astronomical Journal, 2019 Every Sun-like star will eventually evolve into a red giant, a transition which can profoundly affect the evolution of a surrounding planetary system. The timescale of dynamical planet evolution and orbital decay has important implications for planetary ...
S. Grunblatt +5 more
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The Astrophysical Journal, 2023 This paper reports the estimated stellar parameters of 1153 Kepler red giant branch stars determined with asteroseismic modeling. We use radial-mode oscillation frequencies, gravity-mode period spacings, Gaia luminosities, and spectroscopic data to ...
Yingxiang Wang +4 more
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TESS Asteroseismology of the Known Red-giant Host Stars HD 212771 and HD 203949 [PDF]
Astrophysical Journal, 2019 The Transiting Exoplanet Survey Satellite (TESS) is performing a near all-sky survey for planets that transit bright stars. In addition, its excellent photometric precision enables asteroseismology of solar-type and red-giant stars, which exhibit ...
T. Campante +47 more
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Why red giants are giant [PDF]
Monthly Notices of the Royal Astronomical Society, 1989 Four primary causes for the giantness of red giants are identified: (1) the opacity law in the lower envelope; (2) the abrupt molecular weight change across the shell; (3) convection or electron degeneracy in hydrogen-exhausted cores above a certain mass; and (4) approximate thermostatic control of the core by simultaneous hydrogen and helium burning ...
openaire +2 more sources
A search for red giant solar-like oscillations in all Kepler data [PDF]
Monthly notices of the Royal Astronomical Society, 2019 The recently published Kepler mission Data Release 25 (DR25) reported on ∼197 000 targets observed during the mission. Despite this, no wide search for red giants showing solar-like oscillations have been made across all stars observed in Kepler’s long-
M. Hon +6 more
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Rotational Shearing Interferometer in Detection of the Super-Earth Exoplanets
Applied Sciences, 2022 The astronomers and the general population are fascinated with the problem of exoplanet detection. By far the largest number of detected planets are the so-called Super Earths, relatively cold planets orbiting a large, red giant star, with diameters up ...
Marija Strojnik
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A seismic scaling relation for stellar age II: the red giant branch [PDF]
Monthly Notices of the Royal Astronomical Society: Letters, 2019 Owing to their simplicity and ease of application, seismic scaling relations are widely used to determine the properties of stars exhibiting solar-like oscillations, such as solar twins and red giants.
E. Bellinger
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Exoplanets around Red Giants: Distribution and Habitability
Galaxies, 2023 As the search for exoplanets continues, more are being discovered orbiting Red Giant stars. We use current data from the NASA Exoplanet Archive to investigate planet distribution around Red Giant stars and their presence in the host’s habitable zone.
Ruixuan E. Chen +4 more
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