Results 41 to 50 of about 1,904,433 (297)

Theoretical Predictions of Surface Light Element Abundances in Protostellar and Pre-Main Sequence Phase

Frontiers in Astronomy and Space Sciences, 2021
Theoretical prediction of surface stellar abundances of light elements–lithium, beryllium, and boron–represents one of the most interesting open problems in astrophysics.
E. Tognelli, E. Tognelli, S. Degl’Innocenti, S. Degl’Innocenti, P. G. Prada Moroni, P. G. Prada Moroni, L. Lamia, L. Lamia, L. Lamia, R. G. Pizzone, A. Tumino, A. Tumino, C. Spitaleri, C. Spitaleri, A. Chiavassa   +14 more
doaj   +1 more source

Stellar Flare Statistics - Physical Consequences [PDF]

International Astronomical Union Colloquium, 1989
AbstractThe observational data permit us to establish clear statistical correlations between different parameters of stellar flare activity and the characteristics of quiet stars. These relations are: (i)between energies and frequencies of flares on stars of different luminosities;(ii)between total radiation energies of flares and quiet stars both in X-
openaire   +1 more source

Homogeneous spectroscopic parameters for bright planet host stars from the northern hemisphere. The impact on stellar and planetary mass [PDF]

, 2015
This work is supported by the European Research Council/European Community under the FP7 through Starting Grant agreement number 239953. N.C.S. was supported by FCT through the Investigador FCT contract reference IF/00169/2012 and POPH/FSE (EC) by FEDER ...
Mortier, Annelies, A. Mortier, Sousa, S. G., Santos, N. C., V. Adibekyan, S. G. Sousa, Neves, V., Delgado Mena, E., B. Rojas-Ayala, E. Delgado Mena, Mortier, A.; id_orcid, Tsantaki, M., M. Tsantaki, N. C. Santos, Rojas-Ayala, B., G. Israelian, Israelian, G., Adibekyan, V., V. Neves   +18 more
core   +1 more source

Physics of Rotation in Stellar Models [PDF]

, 2009
32 pages, 7 figures, lectures, CNRS school, will be published by ...
openaire   +2 more sources

TOI-1333Ab is on a well-aligned orbit

Astronomy & Astrophysics
Context. Spin-orbit obliquity measurements of hot-Jupiter systems constrain giant planet migration and tidal evolution. In binary systems, combining stellar obliquities with the orbit-orbit angle (γ) between the planetary and stellar companion orbits ...
Knudstrup E., Marcussen M. L., Albrecht S. H., Lundkvist M. S., Persson C. M.   +4 more
doaj   +1 more source

The stellar take on lithium

, 2013
This is a non-exhaustive review of what we have learned from 10+ years of cluster studies with multi-object spectrographs at 10 m-class telescopes about what stars do with their birth-cloud lithium.
A.J. Korn, Korn, Andreas,
core   +1 more source

M-dwarf stellar winds : the effects of realistic magnetic geometry on rotational evolution and planets [PDF]

, 2014
AAV acknowledges support from a Royal Astronomical Society Fellowship. JM acknowledges support from a fellowship of the Alexander von Humboldt foundation.We perform three-dimensional numerical simulations of stellar winds of early-M-dwarf stars.
Morin, J., Gombosi, T.I., Donati, J.F., Opher, M., Gombosi, Tamás, Jardine, M., Morin, Julien, Gombosi, T. I., Vidotto, A. A., Vidotto, A.A., Donati, J. F., Gombosi, Tamas I.   +11 more
core   +1 more source

Solar and stellar eclipse mapping [PDF]

, 2007
Workshop on Solar and Stellar Physics through Eclipses -- MAR 27-29, 2006 -- Ankara Univ, ORSEM Campus, Side, Antalya, TURKEYThe special circumstance of solar eclipse affords an opportunity to review its background, particularly in the cultural context ...
Budding, Edwin
core   +1 more source

Provider and Parent Perspectives on Prioritizing the “Asking and Monitoring” Pediatric Cancer Psychosocial Standards of Care

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background The Standards for Psychosocial Care for Children with Cancer and Their Families (“Standards”) are evidence‐based guidelines for psychosocial care in pediatric oncology. Care related to the three “Asking and Monitoring” Standards—Assessment of Psychosocial Needs, Assessment of Financial Needs, and Monitoring Neurocognitive Problems ...
Julia B. Tager, Natalie Koskela‐Staples, Emily M. Pariseau, Michele Scialla, Kimberly Buff, Lori Wiener, Victoria Sardi Brown, Anne E. Kazak, Kimberly S. Canter   +8 more
wiley   +1 more source

The gas-phase nitridation processes of large, astronomically relevant polycyclic aromatic hydrocarbons cations in the interstellar medium

Astronomy & Astrophysics
Atomic nitrogen reacts efficiently with polycyclic aromatic hydrocarbons species, and potentially generates a diverse array of complex organic molecules in the interstellar medium.
Zhang Congcong, Ge Yanan, Wang Ziyi, Wang Wei, Hua Lijun, Zhao Nian, Yang Xuejuan, Zhen Junfeng   +7 more
doaj   +1 more source