Results 81 to 90 of about 1,262,170 (343)
Mass Loss and Very Low-metallicity Stars [PDF]
AIP Conference Proceedings, 2007 8 pages, 3 figures, to appear in the proceedings of the conference on "Unsolved Problems in Stellar Physics", Cambridge, 2-6 July ...
Raphael Hirschi +8 more
openaire +2 more sources
FEBS Letters, EarlyView.Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho +3 more
wiley +1 more source
The origins of neutron-capture elements in globular cluster M22
Frontiers in Astronomy and Space SciencesIntroductionThe chemical abundances of metal poor (MP) stars in globular clusters provide valuable information for constraining their evolutionary scenarios.MethodsUsing both main r-process and weak r-process patterns, we fit the abundances of s-poor ...
Muhammad Zeshan Ashraf +2 more
doaj +1 more source
Selected topics in the evolution of low-mass stars
EPJ Web of Conferences, 2013 Low-mass stars play a key role in many different areas of astrophysics. In this article, I provide a brief overview of the evolution of low-mass stars, and discuss some of the uncertainties and problems currently affecting low-mass stellar models ...
Catelan M.
doaj +1 more source
X-Atlas: An Online Archive of Chandra's Stellar High Energy Transmission Gratings Observations
, 2007 The high-resolution X-ray spectroscopy made possible by the 1999 deployment of the Chandra X-ray Observatory has revolutionized our understanding of stellar X-ray emission.
Bradley Spitzbart +16 more
core +1 more source
Low-mass companions to nine stars
Acta AstronomicaWe present an independent spectroscopic and radial velocity analysis for nine stars from the Pennsylvania-Toruń Planet Search. For BD+24 4697, we present an updated true companion's mass (0.16$\pm$0.02 \, M$_{\odot}$), as well as evidence of stellar activity.
Niedzielski, A. +7 more
openaire +2 more sources
Pulsation in extremely low mass helium stars [PDF]
Monthly Notices of the Royal Astronomical Society, 2013 AbstractWe explore the stability of extremely low-mass stars (M < 0.25 M⊙) across a wide range of composition, effective temperature, and luminosity. We identify the instability boundaries associated with radial oscillations. These are a strong function of both composition and radial order (0 ≤ n ≤ 13).
C. S. Jeffery, H. Saio
openaire +2 more sources
Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation
FEBS Letters, EarlyView.Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe +3 more
wiley +1 more source
Tidally Delayed Spin-Down of Very Low Mass Stars
The Open Journal of AstrophysicsVery low-mass main-sequence stars reveal some curious trends in observed rotation period distributions that require abating the spin-down that standard rotational evolution models would otherwise imply.
Ketevan Kotorashvili, Eric G. Blackman
doaj +1 more source
Herschel/PACS View Of Disks Around Low-Mass Stars And Brown Dwarfs In The TW Hydrae Association [PDF]
, 2015 We conducted Herschel/PACS observations of five very low-mass stars or brown dwarfs located in the TW Hya association with the goal of characterizing the properties of disks in the low stellar mass regime.
Allers, Katelyn N. +8 more
core +1 more source