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Giant star seismology [PDF]

open access: yesThe Astronomy and Astrophysics Review, 2017
The internal properties of stars in the red-giant phase undergo significant changes on relatively short timescales. Long near-uninterrupted high-precision photometric timeseries observations from dedicated space missions such as CoRoT and Kepler have ...
Christensen-Dalsgaard, J., Hekker, S.
core   +5 more sources

Implications of the TTV-detection of close-in terrestrial planets around M stars for their origin and dynamical evolution

open access: yesEPJ Web of Conferences, 2011
It has been shown that an Earth-size planet or a super-Earth, in resonance with a transiting Jupiter-like body around an M star, can create detectable TTV signals (Kirste & Haghighipour, 2011).
Rastegar S., Haghighipour N.
doaj   +3 more sources

Rotational Shearing Interferometer in Detection of the Super-Earth Exoplanets

open access: yesApplied 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
doaj   +1 more source

Влияние на микоризни гъби върху растежните прояви при различни черешови сортове в района на Кюстендил

open access: yesРастениевъдни науки, 2023
Проследено е влиянието на арбускуларните микоризни гъби в ЕО тора Dynocarb MYC върху растежа на 16 новоинтродуцирани за района на Кюстендил черешови сорта – Primulat, Early Lorry, Sweet Lorry, Lorry Bloom, Big Lorry, Giant Red, Firm Red, Giorgia, Folfer,
Вилина Петрова   +1 more
doaj   +1 more source

Search for a Black Hole Binary in Gaia DR3 Astrometric Binary Stars with Spectroscopic Data

open access: yesThe Astrophysical Journal, 2023
We report the discovery of a candidate binary system consisting of a black hole (BH) and a red giant branch star in Gaia DR3. This binary system was discovered from 64,108 binary solutions for which both astrometric and spectroscopic data are available ...
Ataru Tanikawa   +5 more
doaj   +1 more source

Precise Age for the Binary Star System 12 Com in the Coma Berenices Cluster

open access: yesThe Astronomical Journal, 2023
We present measurements of the interferometrically resolved binary star system 12 Com and the single giant star 31 Com in the cluster Coma Berenices. 12 Com is a double-lined spectroscopic binary system consisting of a G7 giant and an A3 dwarf at the ...
Rex Lam   +13 more
doaj   +1 more source

Responses to dietary levels of methionine in broilers medicated or vaccinated against coccidia under Eimeria tenella-challenged condition

open access: yesBMC Veterinary Research, 2018
Background Coccidiosis is a prevalent problem in chicken production. Dietary addition of coccidiostats and vaccination are two approaches used to suppress coccidia in the practical production.
Anqiang Lai   +4 more
doaj   +1 more source

TU Tau B: The Peculiar “Eclipse” of a Possible Proto-barium Giant

open access: yesThe Astronomical Journal, 2023
TU Tau (=HD 38218 = HIP 27135) is a binary system consisting of a C-N carbon star primary and an A-type secondary. We report on new photometry and spectroscopy which tracked the recent disappearance of the A-star secondary.
Richard O. Gray   +28 more
doaj   +1 more source

Gaia17bpp: A Giant Star with the Deepest and Longest Known Dimming Event

open access: yesThe Astrophysical Journal, 2023
We report the serendipitous discovery of Gaia17bpp/2MASS J19372316+1759029, a binary star with a deep single large-amplitude dimming event of ∼4.5 mag that lasted over 6.5 yr.
Anastasios Tzanidakis   +3 more
doaj   +1 more source

The Global Evolution of Giant Molecular Clouds II: The Role of Accretion [PDF]

open access: yes, 2011
We present virial models for the global evolution of giant molecular clouds. Focusing on the presence of an accretion flow, and accounting for the amount of mass, momentum, and energy supplied by accretion and star formation feedback, we are able to ...
Abdo   +79 more
core   +2 more sources

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