Results 71 to 80 of about 2,275,942 (365)

Surface rotation of Kepler red giant stars [PDF]

open access: yes, 2017
Kepler allows the measurement of starspot variability in a large sample of field red giants for the first time. With a new method that combines autocorrelation and wavelet decomposition, we measure 361 rotation periods from the full set of 17,377 ...
Tugdual Ceillier   +9 more
semanticscholar   +1 more source

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 ...
Rhita-Maria Ouazzani   +3 more
openaire   +3 more sources

THE TIP OF THE RED GIANT BRANCH DISTANCES TO TYPE IA SUPERNOVA HOST GALAXIES. IV. COLOR DEPENDENCE AND ZERO-POINT CALIBRATION [PDF]

open access: yes, 2016
We present a revised Tip of the Red Giant Branch (TRGB) calibration, accurate to 2.7% of distance. A modified TRGB magnitude corrected for its color dependence, the QT magnitude, is introduced for better measurement of the TRGB.
I. Jang, M. Lee
semanticscholar   +1 more source

Asteroseismology of red giant stars [PDF]

open access: yes, 2015
Chapter 11 of the book Extraterrestrial Seismology, 16 pages, 7 ...
Rafael A. García, Dennis Stello
openaire   +3 more sources

Prevalence of the giant liver fluke (fascioloides magna, bassi, 1875) in red deer (cervus elaphus) in the region of floodplain forests of northern Serbia

open access: yesArchives of Veterinary Medicine, 2018
This is the first study offering insights into the prevalence of giant liver fluke in the population of red deer in the territory of Serbia. Giang liver fluke (Fascioloides magna, Bassi, 1875) is the most important liver parasite among wild ruminants in ...
Jovan Mirčeta   +6 more
doaj   +1 more source

Dynamical Substructures of Galactic Globular Clusters I. M5 [PDF]

open access: yesJournal 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

Enormous Li Enhancement Preceding Red Giant Phases in Low-mass Stars in the Milky Way Halo [PDF]

open access: yes, 2017
Li abundances in the bulk of low-mass metal-poor stars are well reproduced by stellar evolution models adopting a constant initial abundance. However, a small number of stars have exceptionally high Li abundances, for which no convincing models have been
Haining Li   +6 more
semanticscholar   +1 more source

An approach for coherent periodogram averaging of tilt‐series data for improved contrast transfer function estimation

open access: yesFEBS Open Bio, EarlyView.
The contrast transfer function (CTF) is an imaging aberration that is a major resolution‐limiting factor in cryo‐electron microscopy (cryo‐EM). Precise CTF estimation is key to overcoming this limitation, but is particularly challenging in cryo‐electron tomography (cryo‐ET) data. Here, we present an approach for using geometric information to assist in
Sagar Khavnekar, William Wan
wiley   +1 more source

Comparative transcriptome and methylome of polar bears, giant and red pandas reveal diet‐driven adaptive evolution

open access: yesEvolutionary Applications
Epigenetic regulation plays an important role in the evolution of species adaptations, yet little information is available on the epigenetic mechanisms underlying the adaptive evolution of bamboo‐eating in both giant pandas (Ailuropoda melanoleuca) and ...
Lei Chen   +11 more
doaj   +1 more source

Drivers of the Abundance of Tridacna spp. Giant Clams in the Red Sea

open access: yesFrontiers 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

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