Results 81 to 90 of about 440,001 (300)
A New Approach to the Long-Term Activity Behavior of DM UMa
Open Astronomy, 2012 A long-term activity character of DM UMa (K0-1 IV-III), which is one of the most active members of the RS CVn type variables, is examined using the multicolor photometric observations which spread to the time interval between 1980 and 2009. In this work,
Taş G., Evren S.
doaj +1 more source
Neutral Oxygen in Late-Type Stars
The Astrophysical Journal, 1967 We have identified the forbidden absorption nebular and auroral lines of oxygen in the spectra of about seventy G and K stars, mostly giants. While weak, they appear in a relatively uncrowded spectral region and can be studied at high dispersion.
Peter S. Conti +4 more
openaire +1 more source
Random Forest Classification of Stars in the Galactic Centre
, 2018 Near-infrared high-angular resolution imaging observations of the Milky Way's nuclear star cluster have revealed all luminous members of the existing stellar population within the central parsec. Generally, these stars are either evolved late-type giants
Plewa, P. M.
core +1 more source
Crosstalk between the ribosome quality control‐associated E3 ubiquitin ligases LTN1 and RNF10
FEBS Letters, EarlyView.Loss of the E3 ligase LTN1, the ubiquitin‐like modifier UFM1, or the deubiquitinating enzyme UFSP2 disrupts endoplasmic reticulum–ribosome quality control (ER‐RQC), a pathway that removes stalled ribosomes and faulty proteins. This disruption may trigger a compensatory response to ER‐RQC defects, including increased expression of the E3 ligase RNF10 ...
Yuxi Huang +8 more
wiley +1 more source
The Astrophysical JournalWe examine the spatial distributions of luminous blue variables (LBVs), B [ e ] supergiants, and Wolf–Rayet stars (WR) stars in the Large Magellanic Cloud (LMC) to clarify their relative ages, evolutionary states, and relationships. This survey employs a
John C. Martin +2 more
doaj +1 more source
Rotation- and temperature-dependence of stellar latitudinal differential rotation
, 2005 More than 600 high resolution spectra of stars with spectral type F and later were obtained in order to search for signatures of differential rotation in line profiles.
Reiners, Ansgar
core +1 more source
Disordered but rhythmic—the role of intrinsic protein disorder in eukaryotic circadian timing
FEBS Letters, EarlyView.Unstructured domains known as intrinsically disordered regions (IDRs) are present in nearly every part of the eukaryotic core circadian oscillator. IDRs enable many diverse inter‐ and intramolecular interactions that support clock function. IDR conformations are highly tunable by post‐translational modifications and environmental conditions, which ...
Emery T. Usher, Jacqueline F. Pelham
wiley +1 more source
CN Trianguli: A W-type Contact Binary Exhibiting A-type Light Curve via Starspot-induced Dimming
The Astrophysical JournalWe present comprehensive photometric observations and analysis of the totally eclipsing binary CN Tri. The photometric solutions suggest it as an extremely low mass ratio contact binary system with q ∼ 0.08.
Zhi-Hua Wang +3 more
doaj +1 more source
Wide binaries without viable bound Newtonian orbits
Astronomy & AstrophysicsContext. Wide binaries offer a unique opportunity to test gravity in the low-acceleration regime, where deviations from Newtonian dynamics may appear. Aims.
Pasquini L. +9 more
doaj +1 more source
The Decay of Debris Disks around Solar-Type Stars
, 2013 We present a Spitzer MIPS study of the decay of debris disk excesses at 24 and 70 $\mu$m for 255 stars of types F4 - K2. We have used multiple tests, including consistency between chromospheric and X-ray activity and placement on the HR diagram, to ...
Gaspar, Andras +3 more
core +1 more source