Results 101 to 110 of about 553,339 (197)

Planets around low-mass stars

, 2019
No ...
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Chemical Abundances in the Metal-Poor Globular Cluster ESO 280-SC06: A Formerly Massive, Tidally Disrupted Globular Cluster

The Open Journal of Astrophysics
We present the first high-resolution abundance study of ESO 280-SC06, one of the least luminous and most metal-poor gravitationally bound Milky Way globular clusters.
Sam A Usman, Alexander P. Ji, Jandrie Rodriguez, Jeffrey D. Simpson, Sarah L. Martell, Ting S. Li, Ana Bonaca, Shivani Shah, Madeleine McKenzie   +8 more
doaj   +1 more source

An Unsupervised Machine Learning Approach to Identify Spectral Energy Distribution Outliers: Application to the S-PLUS DR4 Data

The Astronomical Journal
Identification of specific stellar populations using photometry for spectroscopic follow-up is a first step to confirm and better understand their nature.
F. Quispe-Huaynasi, F. Roig, N. Holanda, V. Loaiza-Tacuri, Romualdo Eleutério, C. B. Pereira, S. Daflon, V. M. Placco, R. Lopes de Oliveira, F. Sestito, P. K. Humire, M. Borges Fernandes, A. Kanaan, C. Mendes de Oliveira, T. Ribeiro, W. Schoenell   +15 more
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The Origin of Young Stellar Populations in NGC 1783: Accretion of External Stars

The Astrophysical Journal
The presence of young stellar populations in the Large Magellanic Cloud cluster NGC 1783 has caught significant attention, with suggestions ranging from it being a genuine secondary stellar generation to a population of blue straggler stars or simply ...
Li Wang, Licai Deng, Xiaoying Pang, Long Wang, Richard de Grijs, Antonino P. Milone, Chengyuan Li   +6 more
doaj   +1 more source

Observations of Extremely Metal-poor O Stars: Weak Winds and Constraints for Evolution Models

The Astrophysical Journal
Metal-poor massive stars drive the evolution of low-mass galaxies, both locally and at high redshift. However, quantifying the feedback they impart to their local surroundings remains uncertain because models of stellar evolution, mass loss, and ionizing
O. Grace Telford, John Chisholm, Andreas A. C. Sander, Varsha Ramachandran, Kristen B. W. McQuinn, Danielle A. Berg   +5 more
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The rotation of low mass stars at 30 Myr in the cluster NGC 3766. [PDF]

Proc Int Astron Union, 2019
Roquette J, Bouvier J, Moraux E, Bouy H, Irwin J, Aigrain S, Lachaume R.   +6 more
europepmc   +1 more source

Low-mass neutron star nucleosynthesis — stripping scenario

International Journal of Modern Physics E
This paper examines nucleosynthesis in a low-mass neutron star crust that loses mass due to accretion in a close binary system and reaching a hydrodynamically unstable configuration explodes. The r-process proceeds mainly in the inner crust. Nucleosynthesis in the outer crust is an explosive process with a sharp increase in temperature caused by an ...
A. Yu. Ignatovskiy, I. V. Panov, A. V. Yudin   +2 more
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Measuring the magnetic fields in the chromospheres of low-mass stars. [PDF]

Nat Commun
Cang T, Petit P, Donati JF, Tian H, Fu J, Li H, Bellotti S, Hu X, Ma X, Lopez Ariste A, Xing K, Morin J, Lu H, Zong W.   +13 more
europepmc   +2 more sources

Wind Roche-lobe Overflow in Low-mass Binaries: Exploring the Origin of Rapidly Rotating Blue Lurkers

The Astrophysical Journal
Wind Roche-lobe overflow (WRLOF) is a mass-transfer mechanism proposed by Mohamed and Podsiadlowski for stellar binaries wherein the wind acceleration zone of the donor star exceeds its Roche-lobe radius, allowing stellar wind material to be transferred ...
Meng Sun, Sasha Levina, Seth Gossage, Vicky Kalogera, Emily M. Leiner, Aaron M. Geller, Zoheyr Doctor   +6 more
doaj   +1 more source

Characterizing <i>K2</i> Candidate Planetary Systems Orbiting Low-Mass Stars IV: Updated Properties for 86 Cool Dwarfs Observed During Campaigns 1-17. [PDF]

Astrophys J, 2019
Dressing CD, Hardegree-Ullman K, Schlieder JE, Newton E, Vanderburg A, Feinstein AD, Duvvuri GM, Arnold L, Bristow M, Thackeray B, Abrahams ES, Ciardi D, Crossfield I, Yu L, Martinez AO, Christiansen JL, Crepp JR, Isaacson H.   +17 more
europepmc   +1 more source