Results 1 to 10 of about 251,667 (302)

Spin-down of Solar-mass Protostars in Magnetospheric Accretion Paradigm

The Astrophysical Journal
Stellar spin is one of the fundamental quantities that characterize a star itself and its planetary system. Nevertheless, stellar spin-down mechanisms in protostellar and pre-main-sequence stellar phases have been a long-standing problem in star ...
Shinsuke Takasao, Masanobu Kunitomo, Takeru K. Suzuki, Kazunari Iwasaki, Kengo Tomida   +4 more
doaj   +1 more source

STELLAR WIND IN THE ISM

Odessa Astronomical Publications, 2017
After a brief review of the modern understanding of stellar wind's action on the ISM we consider two aspects of its "global" collective effect from observational viewpoint.
T. A. Lozinskaya
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Testing the Rossby Paradigm: Weakened Magnetic Braking in Early K-type Stars

The Astrophysical Journal
There is an intricate relationship between the organization of large-scale magnetic fields by a stellar dynamo and the rate of angular momentum loss due to magnetized stellar winds. An essential ingredient for the operation of a large-scale dynamo is the
Travis S. Metcalfe, Pascal Petit, Jennifer L. van Saders, Thomas R. Ayres, Derek Buzasi, Oleg Kochukhov, Keivan G. Stassun, Marc H. Pinsonneault, Ilya V. Ilyin, Klaus G. Strassmeier, Adam J. Finley, Rafael A. García, Daniel Huber, Yuxi (Lucy) Lu, Victor See   +14 more
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Weakened Magnetic Braking in the Exoplanet Host Star 51 Peg

The Astrophysical Journal Letters
The consistently low activity level of the old solar analog 51 Peg not only facilitated the discovery of the first hot Jupiter, but also led to the suggestion that the star could be experiencing a magnetic grand minimum.
Travis S. Metcalfe, Klaus G. Strassmeier, Ilya V. Ilyin, Derek Buzasi, Oleg Kochukhov, Thomas R. Ayres, Sarbani Basu, Ashley Chontos, Adam J. Finley, Victor See, Keivan G. Stassun, Jennifer L. van Saders, Aldo G. Sepulveda, George R. Ricker   +13 more
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The origin of dispersion in the wind mass-loss rate–luminosity relation of massive O stars

Astronomy & Astrophysics
Context. Stellar winds of hot stars are accelerated by the radiative force that mainly comes from the line transitions of heavy elements. As a result, the wind mass-loss rate is expected to scale mostly with the stellar luminosity.
Krtička J., Krtičková I.
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Accretion and Recovery in Giant Eruptions of Massive Stars

The Astrophysical Journal
Giant eruptions are episodic high-rate mass-loss events that massive stars experience in the late-stage of their evolution before exploding as a core-collapse supernova.
Bhawna Mukhija, Amit Kashi
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A Monopolar Jet from Protostar HOPS 10: Evidence for Asymmetric Magnetized Launching

The Astronomical Journal
A fundamental challenge in star formation is understanding how a protostar accretes mass from its circumstellar disk while removing excess angular momentum.
Somnath Dutta
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Molecular Bubble and Outflow in S Mon Revealed by Multiband Data Sets

The Astrophysical Journal
We identify a molecular bubble, and study the star formation and its feedback in the S Mon region, using multiple molecular lines, young stellar objects (YSOs), and infrared data.
Dejian Liu, Ye Xu, YingJie Li, Zehao Lin, Chaojie Hao, WenJin Yang, Jingjing Li, Xinrong Liu, Yiwei Dong, Shuaibo Bian, Deyun Kong   +10 more
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Stellar-wind-fueled Accretion onto Sagittarius A* in the Presence of a Nuclear Star Cluster

The Astrophysical Journal
The Milky Way’s Galactic center hosts the black hole Sagittarius A* (Sgr A*), which provides us with a close-up view into supermassive black hole accretion and feedback. Recent works have shown that the winds from ∼30 Wolf–Rayet (WR) stars orbiting Sgr A*
Edward Skrabacz, Lena Murchikova, Sean M. Ressler, Asad Ukani, Siddhant Solanki   +4 more
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Ages and zero age main sequence spin distribution of stars in detached eclipsing binaries

Astronomy & Astrophysics
Benchmarking fundamental stellar properties is essential for calibrating evolutionary models and establishing empirical relationships between mass, radius, luminosity, and related stellar properties.
Merle T., Van Rensbergen W., Siess L., De Greve J. P., Jansen K., Van Eck S., Van de Steene G.   +6 more
doaj   +1 more source