Results 21 to 30 of about 431,245 (326)
Indications of stellar coronal mass ejections through coronal dimmings [PDF]
Nature Astronomy, 2021 Coronal mass ejections (CMEs) are huge expulsions of magnetized matter from the Sun and stars, traversing space with speeds of millions of kilometres per hour.
A. Veronig +5 more
semanticscholar +1 more source
Painting a portrait of the Galactic disc with its stellar clusters [PDF]
Astronomy & Astrophysics, 2020 Context.The large astrometric and photometric survey performed by theGaiamission allows for a panoptic view of the Galactic disc and its stellar cluster population.
T. Cantat-Gaudin +12 more
semanticscholar +1 more source
Lithium in Turnoff Stars in the Globular Cluster M5: A Quest for Primordial Lithium
The Astrophysical Journal, 2023 The light element lithium is formed by nucleosynthesis during the Big Bang. Its abundance can help to define the parameters of the early Universe. To find this primordial value, it is necessary to determine Li abundances in the oldest stars because it is
Ann Merchant Boesgaard +1 more
doaj +1 more source
Hot super-Earths stripped by their host stars
Nature Communications, 2016 Theory predicts a deficit of super-Earth sized planets, which orbit close to their host star. Here, Lundkvist et al. use data from the NASA Kepler mission to show that this deficit is also seen in observations, thereby providing new insight into ...
M. S. Lundkvist +28 more
doaj +1 more source
Meter- to Millimeter Emission from Cool Stellar Systems : Latest Results, Synergies Across the Spectrum, and Outlook for the Next Decade [PDF]
, 2018 Splinter session summary, to appear in the proceedings of the 20th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun (ed. S. J. Wolk)Radio observations of cool stellar systems provide unique information on their magnetic fields, high-energy ...
Berger, Edo +14 more
core +3 more sources
What asteroseismology can do for exoplanets
EPJ Web of Conferences, 2015 We describe three useful applications of asteroseismology in the context of exoplanet science: (1) the detailed characterisation of exoplanet host stars; (2) the measurement of stellar inclinations; and (3) the determination of orbital eccentricity from ...
Van Eylen Vincent +14 more
doaj +1 more source
The Solar--Stellar Connection [PDF]
, 2004 Stars have proven to be surprisingly prolific radio sources and the added sensitivity of the Square Kilometer Array will lead to advances in many directions.
Anglada +42 more
core +2 more sources
Circumstellar disc lifetimes in numerous galactic young stellar clusters [PDF]
, 2018 We thank the referee for his/her very helpful comments. We thank K. Luhman, E. Mamajek, M. Pecaut, G. Somers, and R. Jeffries for stimulating discussions. The MYStIX project is now supported by the Chandra archive grant AR7-18002X.
Alexander J. W. Richert +12 more
semanticscholar +1 more source
A Catalog of Young Stellar Objects from the LAMOST and ZTF Surveys
Astrophysical Journal Supplement Series, 2023 As astronomical data sets become too large for traditional analysis approaches, more machine-learning algorithms are employed in astronomy. A wealth of light variation data have been accumulated, which provide rich samples for astronomers to study ...
Jingyi Zhang +4 more
semanticscholar +1 more source
The γ Dor stars as revealed by Kepler: A key to reveal deep-layer rotation in A and F stars
EPJ Web of Conferences, 2017 The γ Dor pulsating stars present high-order gravity modes, which make them important targets in the intermediate-and low-mass main-sequence region of the Hertzsprung-Russell diagram. Whilst we have only access to rotation in the envelope of the Sun, the
Salmon S. J. A. J. +4 more
doaj +1 more source