Results 11 to 20 of about 51,078 (265)

Magnetic Fields of F-Type Stars [PDF]

, 2022
Magnetic fields are an observable feature of many stars, with warm, F-type stars of interest in searching for the transition from the fossil fields in hot stars to dynamos in cool stars driven by convection zones.
Seach, John M.
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The magnetic fields, activity and hidden companions of solar-type stars [PDF]

, 2023
The magnetic fields of the Sun and other solar-type stars manifest in a range of observable surface phenomena that provide insight into the magnetic dynamos operating within, but also hamper the detection of exoplanets.
Brown, Emma
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The magnetic fields and stellar winds of the mature late F-stars: β Virginis and θ Draconis [PDF]

, 2022
International audienceMapping the large-scale magnetic field in late F-type stars is important for understanding the nature of the stellar dynamo and the dynamics of thin outer convection zones.
Folsom, C. P., Mengel, M. W., Neiner, C., Seach, J. M., Evensberget, D., Marsden, S. C., Carter, B. D.   +6 more
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XMM-Newton X-ray study of early type stars in the Carina OB1 association [PDF]

, 2007
<p><b>Aims:</b> X-ray properties of the stellar population in the Carina OB1 association are examined with special emphasis on early-type stars.
I. I. Antokhin, J. C. Brown, Rauw, G., G. Rauw, J.-M. Vreux, Antokhin, I. I., Antokhin, I.I., Brown, J.C., van der Hucht, K.A., Rauw, Grégor, K. A. van der Hucht, Vreux, Jean-Marie, Vreux, J.M., van der Hucht, K. A., Brown, J. C.   +14 more
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A BCool magnetic snapshot survey of solar-type stars [PDF]

, 2014
SVJ acknowledges research funding by the Deutsche Forschungsgemeinschaft (DFG) under grant SFB 963/1, project A16. JM was funded by a fellowship of the Alexander von Humboldt Foundation in Göttingen.
Jeffers, S., Ramirez-Velez, J. C., Reiners, Ansgar, Carter, B.D., Donati, J. -F., Jardine, M., do Nascimento, J.-D., Collaboration, The Bcool, Petit, P., Dintrans, B.D., Ramirez-Vèlez, J., Marsden, S., do Nascimento Jr., J., Dintrans, B., Ramirez-Veles, J.C., Donati, J., Carter, Brad D., Auriere, M., Lignieres, F., Nascimento, J. D. Do, Marsden, S. C., Van Grootel, V., Morin, J., do Nascimento, J.-D., Jr., Bouvier, J., Jeffers, Sandra V., Fares, R., Theado, S., Gastine,, Gastine, Thomas, Morin, Julien, Donati, J.-F., Van Grootel, Valérie, BCool Collaboration, do Nascimento Jr., J.-D., Lanoux, J., Morgenthaler, A., Konstantinova-Antova, R., Reiners, A., Jeffers, S.V., Jeffers, S. V., Catala, C., Gastine, T., do Nascimento, J. -D., Carter, B. D., Marsden, S.C., Carter, B., Collaboration, T.   +47 more
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Titanium abundances in late-type stars [PDF]

Astronomy & Astrophysics, 2022
Context. The titanium abundances of late-type stars are important tracers of Galactic formation history. However, abundances inferred from Ti 
Mallinson, J. W. E., Lind, K., Amarsi, A. M., Barklem, P. S., Grumer, J., Belyaev, A. K., Youakim, K.   +6 more
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OH Masers in Envelopes of Late Type Stars [PDF]

Symposium - International Astronomical Union, 1987
Two studies of OH maser emission in envelopes of late type stars -miras (3) and OH/IR objects- have been performed with the Nancay radio-telescope. Mainly, the OH miras are found with thicker dust envelopes than the non OH ones. A sample of unidentified IRAS point sources selected on their colors has been observed.
A.M. Le Squeren, P. Sivagnanam, F. Tran Minh, M. Dennefeld, F. Foy   +4 more
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Isochrones for late-type stars [PDF]

Proceedings of the International Astronomical Union, 2008
AbstractA brief summary of the history of stellar evolution theory and the use of isochrones is given. The present state of the subject is summarized. The major uncertainties in isochrone construction are considered: chemical abundances and color calibrations, and the treatment of turbulent convection in stellar interior and atmosphere models.
openaire   +1 more source

On the potassium-rotation connection in late-type Alpha Persei stars [PDF]

, 2005
We present measurements of the KI lambda7699 line from spectra of 19 late-type members of the alphaPersei cluster obtained with the Intermediate Dispersion Spectrograph at the Isaac Newton Telescope.

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A magnetic snapshot survey of F-type stars [PDF]

, 2020
International audienceWe present a spectropolarimetric magnetic snapshot survey of 55 stars which includes 53 F-type stars ranging from spectral types F0 to F9 plus 2 chemically peculiar stars β CrB, and δ Cap.
Buysschaert, B., Folsom, C. P., Mengel, M. W., Neiner, C., Seach, J. M., Oksala, M. E., Marsden, S. C., Carter, B. D.   +7 more
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