Results 1 to 10 of about 1,389,794 (403)

Dependence of Stellar Differential Rotation on Effective Temperature and Rotation: An Analysis from Starspot Transit Mapping [PDF]

The Astrophysical Journal, 2023
Stellar rotation is crucial for studying stellar evolution, since it provides information about age, angular momentum transfer, and magnetic fields of stars.
Alexandre Araújo, Adriana Valio
doaj   +2 more sources

Rotation and stellar evolution [PDF]

EPJ Web of Conferences, 2013
The effects of rotation on the evolution and properties of low-mass stars are first discussed from the pre-main sequence to the red giant phase. We then briefly indicate how some observational constraints available for these stars can help us progress in
Eggenberger P.
doaj   +3 more sources

The stellar activity‐rotation relationship [PDF]

Astronomische Nachrichten, 2013
AbstractUsing a new catalog of 824 solar and late‐type stars with measured X‐ray luminosities and rotation periods we have studied the relationship between rotation and stellar activity that is believed to be a probe of the underlying stellar dynamo. Using an unbiased subset of the sample we calculate the power law slope of the unsaturated regime of ...
Nicholas J. Wright, Gregory W. Henry, Eric E. Mamajek, Jeremy J. Drake   +3 more
openaire   +8 more sources

Stellar Ages from Stellar Rotation [PDF]

Proceedings of the International Astronomical Union, 2008
Our ability to determine stellar ages from measurements of stellar rotation, hinges on how well we can measure the dependence of rotation on age for stars of different masses. Rotation periods for stars in open clusters are essential to determine the relations between stellar age, rotation, and mass (color).
arxiv   +4 more sources

Rotation of planet-harbouring stars [PDF]

, 2017
The rotation rate of a star has important implications for the detectability, characterisation and stability of any planets that may be orbiting it. This chapter gives a brief overview of stellar rotation before describing the methods used to measure the rotation periods of planet host stars, the factors affecting the evolution of a star's rotation ...
A Skumanich, A Unsold, A. Collier Cameron, A. H. M. J. Triaud, A. McQuillan, A. McQuillan, A. McQuillan, A. Reiners, Adriana Silva-Valio, Andrew W. Howard, B. D. Metzger, B. Levrard, Bence Béky, C Frölich, C. Damiani, C. G. Tinney, D. L. Pollacco, DF Gray, Dong Lai, E. Bolmont, Edmund J. Weber, Elisabeth R. Newton, F. Gallet, François Fressin, Frédéric Pont, G. Bakos, G. Boué, G. Lo Curto, G. Torres, Giovanni Privitera, Gordon I. Ogilvie, Guillermo Gonzalez, GW Collins II, Géza Kovács, H. M. Cegla, Ian Dobbs‐Dixon, J. A. Valenti, J. Bouvier, J. T. Wright, Jennifer L. van Saders, Jeremy Tregloan-Reed, Joseph D. Twicken, K. A. Janes, L. Gizon, L. Siess, Lucianne M. Walkowicz, M. Auvergne, O. Cohen, O. Struve, P. F. L. Maxted, P. F. L. Maxted, P. Weise, R. A. García, RR Radick, RR Radick, Ruth Angus, S. A. Barnes, S. Alves, S. Ferraz-Mello, S. T. Douglas, SA Barnes, Seth Teitler, Simon Albrecht, Soko Matsumura, Sydney A. Barnes, Sydney A. Barnes, Søren Meibom, Søren Meibom, Teruyuki Hirano, Teruyuki Hirano, Thomas G. Beatty, W Borucki, WJ Borucki, Yasuhiro Ohta   +73 more
arxiv   +3 more sources

Towards age/rotation/magnetic activity relation with seismology

EPJ Web of Conferences, 2015
The knowledge of stellar ages directly impacts the characterization of a planetary system as it puts strong constraints on the moment when the system was born. Unfortunately, the determination of precise stellar ages is a very difficult task.
Mathur Savita
doaj   +3 more sources

Disk-locking Regulates Stellar Rotation in Young Clusters: Insights from NGC 2264 [PDF]

The Astrophysical Journal
Many young clusters possess extended main sequences, a phenomenon commonly ascribed to stellar rotation. However, the mechanism behind their very wide stellar rotation distributions remains unclear.
Yutian Bu, Chenyu He, Min Fang, Chengyuan Li   +3 more
doaj   +2 more sources

Impact of rotation on stellar models [PDF]

Astronomische Nachrichten, 2016
AbstractAfter a brief recall of the main impacts of stellar rotation on the structure and the evolution of stars, four topics are addressed: 1) the links between magnetic fields and rotation; 2) the impact of rotation on the age determination of clusters; 3) the exchanges of angular momentum between the orbit of a planet and the star due to tides; 4 ...
{Meynet} G., {Maeder} A., {Eggenberger} P., {Ekstrom} S., {Georgy} C., {Chiappini} C., {Privitera} G., {Choplin} A.   +7 more
openaire   +7 more sources

Stellar rotation effects on the stellar winds

Physics of Plasmas, 2020
The purpose of this paper is to give detailed systematic considerations to clarify and provide insights and a qualitative guide into the role of the azimuthal wind flow in the stellar-rotation braking mechanism. For this purpose, we make use of the Weber-Davis [Astrophys. J. 148, 217 (1967)] magnetohydrodynamic (MHD) version of Parker's [Astrophys.
B. Shivamoggi
openaire   +3 more sources

The Effects of Stellar Rotation. I. Impact on the Ionizing Spectra and Integrated Properties of Stellar Populations [PDF]

, 2012
We present a sample of synthetic massive stellar populations created using the Starburst99 evolutionary synthesis code and new sets of stellar evolutionary tracks, including one set that adopts a detailed treatment of rotation. Using the outputs of the Starburst99 code, we compare the populations' integrated properties, including ionizing radiation ...
Bressan, Cerviño, Cid Fernandes, Claus Leitherer, da Silva, Daniel Schaerer, de Mink, Dopita, Drout, Emily M. Levesque, Fumagalli, Georges Meynet, Georgy, González Delgado, González Delgado, Groves, Hillier, Huang, Izotov, Kewley, Kewley, Kobulnicky, Kobulnicky, Leitherer, Leitherer, Leitherer, Leitherer, Levesque, Levesque, Levesque, Maeder, Massey, Massey, Massey, Meynet, Neugent, Rix, Salasnich, Schaller, Shull, Snijders, Sylvia Ekstrom, Tremonti, Vázquez, Vázquez, Wolff, Zahn   +46 more
arxiv   +3 more sources