Results 31 to 40 of about 578,030 (294)

Fictions, Conditionals, and Stellar Astrophysics [PDF]

, 2013
This article argues in favour of an inferential role for fictions in scientific modelling. The argument proceeds by means of a detailed case study, namely models of the internal structure of stars in stellar astrophysics.
Suárez, Mauricio, Mauricio Suárez
core   +1 more source

On Stellar Rotation.

The Astrophysical Journal, 1942
Not ...
openaire   +1 more source

Constraining Stellar Rotation at the Zero-age Main Sequence with TESS [PDF]

The zero-age main sequence (ZAMS) is a critical phase for stellar angular momentum evolution, as stars transition from contraction-dominated spin-up to magnetic wind-dominated spin-down.
A. A. Breimann, Pérez Chávez, J. A., Cargile, P. A., Pérez Chávez, J. A., Matt, S. P., Huang, C. X., S. P. Matt, G. Zhou, Zhou, G., J. A. Pérez Chávez, C. X. Huang, Breimann, A. A., Wright, N. J., P. A. Cargile, N. J. Wright, Douglas, S. T., S. T. Douglas, Douglas, S. T,   +17 more
core   +1 more source

Measurement of the Angular Momenta of Pre-main-sequence Stars: Early Evolution of Slow and Fast Rotators and Empirical Constraints on Spin-down Torque Mechanisms

The Astronomical Journal, 2023
We use TESS full-frame imaging data to investigate the angular momentum evolution of young stars in the Orion Complex. We confirm recent findings that stars with rotation periods faster than 2 days are overwhelmingly binaries, with typical separations of
Marina Kounkel, Keivan G. Stassun, Lynne A. Hillenbrand, Jesús Hernández, Javier Serna, Jason Lee Curtis   +5 more
doaj   +1 more source

Topics in Core-Collapse Supernova Theory: The Formation of Black Holes and the Transport of Neutrinos [PDF]

, 2012
Core-Collapse Supernovae are one of the most complex astrophysical systems in the universe. They deeply entwine aspects of physics and astrophysics that are rarely side by side in nature.
O'Connor, Evan Patrick
core   +1 more source

Problems in Low-Mass Stellar Rotation

, 2023
Rotation is an often overlooked factor in stellar evolution. Understanding the evolution of rotation is pertinent to improving our understanding of the role that rotating stellar evolution plays in the evolution of the universe around us.
TANNER ALEX WILSON (17701080)
core   +1 more source

Observable Signatures of Classical T Tauri Stars Accreting in an Unstable Regime

EPJ Web of Conferences, 2014
We discuss key observational signatures of Classical T Tauri stars (CTTSs) accreting through Rayleigh-Taylor instability, which occurs at the interface between an accretion disk and a stellar magnetosphere.
Kurosawa Ryuichi, Romanova M. M.
doaj   +1 more source

A study of stellar population of intermediate-age globular cluster NGC 2249

Results in Physics, 2020
The Large Magellanic Cloud (LMC) star cluster NGC 2249 has been found to exhibit an extended main-sequence turn-off (eMSTO) in the color-magnitude diagram (CMD) derived from the data of the Hubble Space Telescope (HST).
Zhongmu Li, Rainer Spurzem, Caiyan Mao, Yingxin Ma, Yangyang Deng   +4 more
doaj   +1 more source

Constraining planet structure from stellar chemistry : the cases of CoRoT-7, Kepler-10, and Kepler-93 [PDF]

, 2015
This work was supported by Fundação para a Ciência e a Tecnologia (FCT) through the research grant UID/FIS/04434/2013. P.F., N.C.S., and S.G.S. also acknowledge support from FCT through Investigador FCT contracts of reference IF/01037/2013, IF/00169/2012,
Mortier, Annelies, A. Mortier, Dorn, Caroline, Sousa, S. G., Santos, N. C., Delgado-Mena, E., Benz, Willy, Mordasini, Christoph, Pepe, F., Mortier, A.; id_orcid, Mortier, A., F. Pepe, Figueira, P., Adibekyan, V., Udry, S., C. Mordasini, A. Santerne, Santerne, A., W. Benz, Dorn, C., V. Adibekyan, E. Delgado-Mena, Buchhave, L., S. G. Sousa, Mordasini, C., S. Udry, N. C. Santos, Buchhave, Lars A., Benz, W., P. Figueira, L. Buchhave, C. Dorn   +31 more
core   +3 more sources

Characterisation of starspot structure and differential rotation of Kepler-411

Astronomy & Astrophysics
Context. Starspots and their movements on stellar surfaces enable the mechanisms of stellar magnetic activity to be investigated. Information on the spot distribution and differential rotation provide important constraints for the behaviour of stellar ...
Tuomi Mikko, Haris András, Hackman Thomas   +2 more
doaj   +1 more source