Results 61 to 70 of about 42,381 (333)

The Impact of Stellar Surface Magnetoconvection and Oscillations on the Detection of Temperate, Earth-Mass Planets Around Sun-Like Stars

Geosciences, 2019
Detecting and confirming terrestrial planets is incredibly difficult due to their tiny size and mass relative to Sun-like host stars. However, recent instrumental advancements are making the detection of Earth-like exoplanets technologically feasible ...
H. M. Cegla
doaj   +1 more source

Solar-like oscillations in the G9.5 subgiant beta Aquilae [PDF]

, 2011
An interesting asteroseismic target is the G9.5 IV solar-like star beta Aql. This is an ideal target for asteroseismic investigations, because precise astrometric measurements are available from Hipparcos that greatly help in constraining the theoretical
A. Bonanno, Arentoft, Bedding, Bedding, Bedding, Bonanno, Borucki, Butler, Butler, Carrier, Chaplin, Christensen-Dalsgaard, Claudi, Cox, Cox, E. Corsaro, Elsworth, F. Grundahl, Flower, Frandsen, Fuhrmann, Gilliland, Gratton, Gray, H. Kjeldsen, Kjeldsen, Kjeldsen, Kjeldsen, Kjeldsen, Kjeldsen, Koch, L. Paternò, Leccia, Luck, Marcy, Mathur, Michel, Montgomery, Nordgren, Oja, Quirion, Richichi, S. Leccia, Stello, Tassoul, Valenti, van Leeuwen   +46 more
core   +1 more source

Day/night variations of myeloid and lymphoid cell subsets in the murine inguinal lymph node

FEBS Open Bio, EarlyView.
The circadian system is involved in the temporal regulation of the immune system. Our study reveals that two innate immune populations, NKT cells and neutrophils, predominate at the beginning of the day in healthy mice, highlighting how the time of day influences immune responses.
Paula M. Wagner, César G. Prucca, Lucia Boffelli, Virginia A. Piqueras, Silvia G. Correa, Mariana Maccioni, Mario E. Guido   +6 more
wiley   +1 more source

The photoswitchable cannabinoid azo‐HU308 enables optical control of Ca2+ dynamics in INS‐1 β‐cells via off‐target effects on TRPC channels

FEBS Open Bio, EarlyView.
Light activation of the photoswitchable cannabinoid ligand azo‐HU308 triggers Ca2+ influx in pancreatic β‐cells through TRPC channels, independent of CB2 cannabinoid receptors. This reveals a non‐GPCR pathway for cannabinoid modulation of β‐cell Ca2+ dynamics and establishes azo‐HU308 as an optical tool to study cannabinoid signaling through TRP ...
Alexander E. G. Viray, James A. Frank
wiley   +1 more source

TESS Asteroseismology of β Hydri: A Subgiant with a Born-again Dynamo

The Astrophysical Journal
The solar-type subgiant β Hyi has long been studied as an old analog of the Sun. Although the rotation period has never been measured directly, it was estimated to be near 27 days.
Travis S. Metcalfe, Jennifer L. van Saders, Daniel Huber, Derek Buzasi, Rafael A. García, Keivan G. Stassun, Sarbani Basu, Sylvain N. Breton, Zachary R. Claytor, Enrico Corsaro, Martin B. Nielsen, J. M. Joel Ong, Nicholas Saunders, Amalie Stokholm, Timothy R. Bedding   +14 more
doaj   +1 more source

Measuring stellar oscillations using equivalent widths of absorption lines [PDF]

, 1996
Kjeldsen et al. (1995, AJ 109, 1313; astro-ph/9411016) have developed a new technique for measuring stellar oscillations and claimed a detection in the G subgiant eta Boo.
Barbuy, B., Bedding, T. R., Kjeldsen, H., Reetz, J.   +3 more
core   +2 more sources

Enzymatic degradation of biopolymers in amorphous and molten states: mechanisms and applications

FEBS Open Bio, EarlyView.
This review explains how polymer morphology and thermal state shape enzymatic degradation pathways, comparing amorphous and molten biopolymer structures. By integrating structure–reactivity principles with insights from thermodynamics and enzyme engineering, it highlights mechanisms that enable efficient polymer breakdown.
Anđela Pustak, Aleksandra Maršavelski
wiley   +1 more source

Validating the 1D–3D Coupling Stellar Models via Asteroseismology of 18 Kepler Main-sequence Stars

The Astrophysical Journal
The standard 1D stellar evolution model has poor descriptions of the near-surface layers of stars, and this can be improved by using the atmosphere model computed from 3D hydrodynamical simulations.
Li Zhikai, Li Tanda, Zhou Yixiao, Bi Shaolan   +3 more
doaj   +1 more source

Unveiling the Structure and Dynamics of Red Giants With Asteroseismology

Frontiers in Astronomy and Space Sciences, 2020
The Kepler mission observed many thousands of red giants. The long time series, some as long as the mission itself, have allowed us to study red giants with unprecedented detail. Given that red giants are intrinsically luminous, and hence can be observed
Sarbani Basu, Saskia Hekker, Saskia Hekker   +2 more
doaj   +1 more source

A Systematic Study of the Connection Between White Dwarf Period Spectra and Model Structure

The Astrophysical Journal, 2023
To date, pulsational variability has been measured for nearly 70 pulsating helium-atmosphere white dwarfs (DBVs) and 500 pulsating hydrogen-atmosphere white dwarfs (DAVs), with only a fraction of these having been the subject of asteroseismic analysis ...
Agnès Bischoff-Kim
doaj   +1 more source