Results 31 to 40 of about 553,339 (197)

Coronal Structure of Low-Mass Stars

, 2012
We investigate the change in stellar magnetic topology across the fully-convective boundary and its effects on coronal properties. We consider both the magnitude of the open flux that influences angular momentum loss in the stellar wind and X-ray ...
Aline Vidotto, Altschuler, Barbera, Berger, Berger, Berger, Berger, Berger, Burgasser, Chabrier, Delfosse, Donati, Donati, Donati, Donati, Donati, Fleming, Giampapa, Gilliland, Golub, Gregory, Guedel, Güdel, Hallinan, Hallinan, Hussain, Hussain, Irwin, Jardine, Jardine, Jean-François Donati, Jeffries, Johns-Krull, Julien Morin, Kim, Kiraga, Kitchatinov, Mangeney, Marilli, McLean, Melrose, Moira Jardine, Morin, Morin, Morin, Ness, Ness, Patten, Pauline Lang, Pizzolato, Reiners, Reiners, Rosner, Saar, Sanderson, Schatten, Schmitt, Scholz, Skumanich, Spiegel, Stauffer, Stauffer, Stȩpień, van Ballegooijen, Vidotto, Vilhu, Vilhu, Weber   +67 more
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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., Brown, Joanna M., Gong, Munan A., Herczeg, Gregory J., Kraus, Adam L., Liu, Michael C., Liu, Yao, Shkolnik, Evgenya L., van Dishoeck, Ewine F.   +8 more
core   +1 more source

Low-mass Star Formation: Observations [PDF]

Proceedings of the International Astronomical Union, 2010
AbstractI briefly review recent observations of regions forming low mass stars. The discussion is cast in the form of seven questions that have been partially answered, or at least illuminated, by new data. These are the following: where do stars form in molecular clouds; what determines the IMF; how long do the steps of the process take; how efficient
openaire   +2 more sources

Adiabatic Mass Loss in Binary Stars. IV. Low- and Intermediate-mass Helium Binary Stars

The Astrophysical Journal Supplement Series
The unstable mass transfer situation in binary systems will asymptotically cause the adiabatic expansion of the donor star and finally lead to the common envelope phase.
Lifu Zhang, Hongwei Ge, Xuefei Chen, Zhanwen Han   +3 more
doaj   +1 more source

1E 1207.4-5209: a low-mass bare strange star?

, 2004
Both rotation- and accretion-powered low-mass bare strange stars are studied, the astrophysical appearances of which are especially focused. It is suggested that low-mass bare strange stars, with weaker ferromagnetic fields than that of normal pulsars ...
Buras, Lattimer, Link, R. X. Xu
core   +1 more source

The Angular Momentum Evolution of Very Low Mass Stars [PDF]

, 2000
We present theoretical models of the angular momentum evolution of very low mass stars (0.1 - 0.5 M_sun) and solar analogues (0.6 - 1.1 M_sun). We investigate the effect of rotation on the effective temperature and luminosity of these stars. We find that
Alison Sills, Allain S., Baraffe I., Bohm-Vitense E., Bouvier J., Chaboyer B., Collier-Cameron A. C., Collier-Cameron A. C., D. M. Terndrup, Keppens R., M. H. Pinsonneault, Meynet G., Sackmann I. J., Santiago B., Talon S.   +14 more
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Asteroseismology of 687 TESS Red Giants: Individual Frequencies and Asymptotic Parameters

The Astrophysical Journal Supplement Series
The individual modes and asymptotic parameters are important characteristics of stellar oscillation. Using TESS 2 minute cadence data from Sectors 1 to 75, we perform asteroseismic analysis of 687 red giants, and provide their oscillation mode parameters.
Jianzhao Zhou, Shaolan Bi, Yaguang Li, Jie Yu, Tanda Li, Xianfei Zhang, Lifei Ye, Mengjie Li, Liu Long, Tiancheng Sun, Yuqin Chen   +10 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

Alpha Element Populations Among Local Halo Stars

The Astronomical Journal, 2023
Previous studies have shown that the halo of the Milky Way galaxy is made up of two distinct stellar populations, one from dissipative collapse and the other accreted.
Michael V. Reinhard, John B. Laird
doaj   +1 more source

The origins of neutron-capture elements in globular cluster M22

Frontiers in Astronomy and Space Sciences
IntroductionThe 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, Wenyuan Cui, Hongjie Li   +2 more
doaj   +1 more source