Results 11 to 20 of about 173,010 (211)

Stellar model chromospheres. VI - Empirical estimates of the chromospheric radiative losses of late-type stars

The Astrophysical Journal, 1978
A method is developed for estimating the nonradiative heating of stellar chromospheres by measuring the net radiative losses in strong Fraunhofer line cores. This method is applied to observations of the Mg II resonance lines in a sample of 32 stars including the sun.
J. L. Linsky, T. R. Ayres
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Science development study for the Atacama Large Aperture Submillimeter Telescope (AtLAST): Solar and stellar observations [version 2; peer review: 1 approved, 2 approved with reservations] [PDF]

Open Research Europe
Observations at (sub-)millimeter wavelengths offer a complementary perspective on our Sun and other stars, offering significant insights into both the thermal and magnetic composition of their chromospheres.
Yi Chai, Roman Brajša, Dale Gary, Joaquim Costa, Stanislav Gunar, Guillermo Gimenez de Castro, Hugh Hudson, Pamela Klaassen, Gregory Fleishman, Atul Mohan, Mats Kirkaune, Alberto Pellizzoni, Mark Booth, Galina Motorina, Caius L. Selhorst, Maryam Saberi, Masumi Shimojo, Paulo J. A. Simoes, Davor Sudar, Ivica Skokić, Stephen M. White, Fabian Menezes, Amelie Saintonge, John Orlowski-Scherer, Antonio Hales, Claudia Cicone, Tony Mroczkowski, Doug Johnstone, Luca Di Mascolo, Minju Lee, Eelco van Kampen, Thomas Maccarone, Daizhong Liu, Matthew Smith, Martin A. Cordiner, Alexander E. Thelen, Miroslav Barta, Sven Wedemeyer   +37 more
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The Magnetic Field Configuration in Solar and Stellar Chromospheres [PDF]

Symposium - International Astronomical Union, 1983
Calculations are presented for the inhomogeneous magnetic field structure above a stellar photosphere which has magnetic flux tubes located at the downdraughts of its supergranulation pattern. Regions can be delineated where the ambient magnetic energy density is large or small compared with the thermal energy density derived from a model atmosphere ...
U. Anzer, D. J. Galloway
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Stellar model chromospheres. XI - A survey of CA II lambda 8542 line profiles in late-type stars of differing chromospheric activity

The Astrophysical Journal, 1979
Models are constructed for the upper photosphere and chromosphere of Arcturus based on the H, K, and IR triplet lines of Ca II and the h and k lines of Mg II. The chromosphere model is derived from complete redistribution solutions for a five-level Ca II ion and a two-level Mg II ion. A photospheric model is derived from the Ca II wings using first the
Jeffrey L. Linsky, D. M. Hunten, R. Sowell, David L. Glackin, W. L. Kelch   +4 more
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Observation and modelling of main-sequence stellar chromospheres - VII. Rotation and metallicity of dM1 stars^★ [PDF]

, 2008
E. R. Houdebine
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The Role of Magnetic Fields in Stellar Chromospheres and Transition Regions [PDF]

, 1983
Jeffrey L. Linsky
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Heating of Solar and Stellar Chromospheres and Coronae by MHD Waves [PDF]

, 1992
Z. E. Musielak
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Heating of Stellar Chromospheres by Shock Waves.

The Astrophysical Journal, 1960
R. Weymann
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Stellar Coronae And Chromospheres In The Era Of Asteroseismology

, 2018
R. S. Booth, Katja Poppenhaeger, C. A. Watson, V. Silva Aguirre, Dennis Stello, S. J. Wolk   +5 more
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Stellar Parameters and Spectroscopic Properties of TESS Objects Observed in the LAMOST Low- and Medium-resolution Spectral Survey

The Astrophysical Journal Supplement Series, 2022
Stellar parameters and magnetic activity are important for the understanding of stellar physics and dynamo theory. We have used LAMOST spectroscopic surveys to study stellar parameters and magnetic activity properties of TESS objects.
Li-yun Zhang, Tianhao Su, Prabhakar Misra, Xianming L. Han, Gang Meng, Qingfeng Pi, Jiawei Yang   +6 more
doaj   +1 more source