Results 31 to 40 of about 112,697 (340)
Disk-locking Regulates Stellar Rotation in Young Clusters: Insights from NGC 2264
The Astrophysical JournalMany young clusters possess extended main sequences, a phenomenon commonly ascribed to stellar rotation. However, the mechanism behind their very wide stellar rotation distributions remains unclear.
Yutian Bu +3 more
doaj +1 more source
EPJ Web of Conferences, 2017 Starspots are cooler and darker than the stellar surface. Therefore, the emitted flux of a star changes when spots are visible on its surface. The presence of spots together with the stellar rotation leads to a periodic modulation on the light curve.
Santos Ângela R. G. +4 more
doaj +1 more source
The Astrophysical Journal, 2022 We perform intensity variability analyses (photometric analyses: the Lomb–Scargle periodogram, autocorrelation, and wavelet) and asteroseismic analysis of 92 Kepler solar-like main-sequence stars to understand the reliability of the measured stellar ...
Yuting Lu +3 more
doaj +1 more source
A study of central galaxy rotation with stellar mass and environment [PDF]
, 2016 © 2017. The American Astronomical Society. All rights reserved. We present a pilot analysis of the influence of galaxy stellar mass and cluster environment on the probability of slow rotation in 22 central galaxies at mean redshift z = 0.07.
Bremer, Malcom N. +15 more
core +4 more sources
TRAF2 binds to TIFA via a novel motif and contributes to its autophagic degradation
FEBS Letters, EarlyView.TRAF family members couple receptor signalling complexes to downstream outputs, but how they interact with these complexes is not always clear. Here, we show that during ADP‐heptose signalling, TRAF2 binding to TIFA requires two short sequence motifs in the C‐terminal tail of TIFA, which are distinct from the TRAF6 binding motif.
Tom Snelling +4 more
wiley +1 more source
The Evolution of Stellar X-Ray Activity and Angular Momentum as Seen by eROSITA, TESS, and Gaia
The Astrophysical Journal LettersWe have assembled a sample of ∼8200 stars with spectral types F5V–M5V, all having directly measured X-ray luminosities from eROSITA and rotation periods from TESS and having empirically estimated ages via their membership in stellar clusters and groups ...
Keivan G. Stassun, Marina Kounkel
doaj +1 more source
Effect of stellar rotation on oscillation frequencies [PDF]
Astrophysics and Space Science, 2010 We investigate whether the rotational splittings of β Cephei stars can give some clue about the existence of a differential rotation in latitude, and if they are contaminated by the cubic order effects of rotation on oscillation frequencies. We also study some properties of splitting asymmetries and axisymmetric mode frequencies which provide seismic ...
Ouazzani, Rhita-Maria +3 more
openaire +3 more sources
Polar branches of stellar activity waves: dynamo models and observations
, 2011 [Abridged abstract:] Stellar activity data provide evidence of activity wave branches propagating polewards rather than equatorwards (the solar case). Stellar dynamo theory allows polewards propagating dynamo waves for certain governing parameters.
A. F. Lanza +56 more
core +1 more source
Determination of the position angle of stellar spin axes [PDF]
, 2014 Measuring the stellar position angle provides valuable information on binary stellar formation or stellar spin axis evolution. We aim to develop a method for determining the absolute stellar position angle using spectro-astrometric analysis of high ...
Lesage, Anna-Lea, Wiedemann, Guenter
core +3 more sources