Results 21 to 30 of about 562,012 (337)

Comparative study of the digestion and metabolism related genes’ expression changes during the postnatal food change in different dietary mammals

open access: yesFrontiers in Genetics, 2023
The changes in the expression of genes related to digestion and metabolism may be various in different dietary mammals from juvenile to adult, especially, the giant panda (Ailuropoda melanoleuca) and red panda (Ailurus fulgens), which were once ...
Zhuma Yizhen   +9 more
doaj   +1 more source

Winds from Red Giants [PDF]

open access: yesInternational Astronomical Union Colloquium, 1988
AbstractTwo principal mechanisms that may be responsible for mass loss from red giants are considered: shock wave-driven winds and radiatively (dust)-driven winds. Effect of the periodic shocks accompanying nonlinear oscillations of red giants is most prominent in the outer layers of the stellar atmosphere where shocks are able not only to expel gas ...
openaire   +1 more source

Exploring relationships between the distribution of giant red shrimp Aristaeomorpha foliacea (Risso, 1827) and environmental factors in the Central-Western Mediterranean Sea

open access: yesAdvances 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
doaj   +1 more source

Asteroseismic Modeling of 1153 Kepler Red Giant Branch Stars: Improved Stellar Parameters with Gravity-mode Period Spacings and Luminosity Constraints

open access: yesThe 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
doaj   +1 more source

Why red giants are giant [PDF]

open access: yesMonthly 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   +1 more source

Characterisation of red-giant stars in the public Kepler data

open access: yes, 2011
The first public release of long-cadence stellar photometric data collected by the NASA Kepler mission has now been made available. In this paper we characterise the red-giant (G-K) stars in this large sample in terms of their solar-like oscillations. We
Chaplin, W. J.   +9 more
core   +5 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

Illumination in symbiotic binary stars: Non-LTE photoionization models. II. Wind case [PDF]

open access: yes, 1997
We describe a non-LTE photoionization code to calculate the wind structure and emergent spectrum of a red giant wind illuminated by the hot component of a symbiotic binary system.
Almog Y.   +34 more
core   +3 more sources

Red giants rotational splittings [PDF]

open access: yesEPJ Web of Conferences, 2013
The space missions CoRoT and Kepler provide high quality data that allow to test the transport of angular momentum in stars by the seismic determination of the internal rotation profile. Our aim is to test the validity of the seismic diagnostics for red giant rotation that are based on a perturbative method and to investigate the oscillation spectra ...
Ouazzani, R. M.   +3 more
openaire   +2 more sources

Asteroseismology of KIC 8263801:Is it a member of NGC 6866 and a red clump star? [PDF]

open access: yes, 2018
We present an asteroseismic analysis of the Kepler light curve of KIC 8263801, a red-giant star in the open cluster NGC 6866 that has previously been reported to be a helium-burning red-clump star.
Basu, Sarbani   +4 more
core   +2 more sources

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