Results 51 to 60 of about 562,019 (240)
EPJ Web of Conferences, 2013 CoRoT and Kepler measurements reveal us that the amplitudes of solar-like oscillations detected in red giant stars scale from stars to stars in a characteristic way. This observed scaling relation is not yet fully understood but constitutes potentially a
Barban C. +7 more
doaj +1 more source
Dynamical Substructures of Galactic Globular Clusters I. M5 [PDF]
Journal of Astronomy and Space Sciences, 2004 CCD images to study the dynamical substructure of the globular cluster M5. We investigate the radial variation of ellipticities and position angles using the stellar photometry and the IRAF ellipse task.
Jongwhan Rhee, Young-Jong Sohn
doaj +1 more source
Drivers of the Abundance of Tridacna spp. Giant Clams in the Red Sea
Frontiers in Marine Science, 2021 Giant clams (Subfamily Tridacninae), are important members of Indo-Pacific coral reefs, playing multiple roles in the framework of these communities. Although they are prominent species in Red Sea reefs, data on their distribution and densities in the ...
Susann Rossbach +2 more
doaj +1 more source
Ecology and EvolutionIn the context of limited biodiversity conservation resources, the umbrella species strategy is considered an efficient conservation approach. This study focuses on the sympatric distribution areas of the giant panda (Ailuropoda melanoleuca) and the red ...
Bin Feng +5 more
doaj +1 more source
Photometric survey of the red giant V449 Cygni over half a century (1974 to 2022). A semi-regular variable star with a period of ~54 days [PDF]
, 2022 Guy Boistel
openalex +1 more source
Species associations and conservation of Giant Pandas
Global Ecology and Conservation, 2023 This paper documents our comparative study on the community environments of giant pandas Ailuropoda melanoleuca between Wolong National Nature Reserve (Wolong NNR), Tangjiahe NNR, and Heizhugou NNR in Sichuan, China using infrared camera data collected ...
Zhuotao Liu +5 more
doaj +1 more source
Asteroseismology of red-clump stars with CoRoT and Kepler [PDF]
, 2009 The availability of asteroseismic constraints for a large number of red giants with CoRoT and in the near future with Kepler, paves the way for detailed studies of populations of galactic-disk red giants.
A. Miglio +6 more
core +1 more source
Red giant evolution in modified gravity [PDF]
Journal of Cosmology and Astroparticle Physics, 2019 In this paper, we study the chameleon profile in inhomogeneous density distributions and find that the fifth force in thin shell near the surface is weaker from what expected in homogeneous density distributions. Also, we check the validity of quasi-static approximation for the chameleon scalar field in the astrophysical time scales.
Najafi, Sh. +3 more
openaire +2 more sources
The Astrophysical JournalThe tip of the red giant branch (TRGB) stars have attracted intensive attention in recent years because their I -band absolute magnitudes, M _I , are often used for distance calibration in the Hubble constant measurements because of its almost ...
Zhenzhen Shao +5 more
doaj +1 more source
Non-adiabatic oscillations of red giants [PDF]
Monthly Notices of the Royal Astronomical Society, 2007 Abstract Using our non-local time-dependent theory of convection, the linear non-adiabatic oscillations of 10 evolutionary model series with masses of 1–3 M⊙ are calculated. The results show that there is a red giant instability strip in the lower temperature side of the Hertzsprung–Russell diagram which goes along the sequences of the ...
Xiong, D. R., Deng, L.
openaire +2 more sources