Results 41 to 50 of about 10,538,954 (217)

MAGNETOSPHERIC ACCRETION IN T TAURI STARS: OBSERVATIONAL TEST

Odessa Astronomical Publications, 2017
In the classical T Tauri stars (CTTS) the magnetic field plays an important role in the interaction between the star and the accretion disk. In 1996-2000 we have carried out an extensive spectroscopic and photometric monitoring of the extremly active ...
P. P. Petrov
doaj   +1 more source

Discovery of a New Molecular Bubble–Outflow Structure in the Taurus B18 Cloud

The Astrophysical Journal, 2023
Star formation can produce bubbles and outflows, as a result of stellar feedback. Outflows and bubbles inject momentum and energy into the surrounding interstellar medium, and so are related to the overall energy balance of the molecular cloud. Molecular
Yan Duan, Di Li, Paul F. Goldsmith, Laurent Pagani, Tao-Chung Ching, Shu Liu, Jinjin Xie, Chen Wang   +7 more
doaj   +1 more source

Who Is a Patriotic Man? Rethinking Hegemonic Masculinity in Modern Iran

Gender &History, EarlyView.
ABSTRACT This article examines the analytical viability of the concept of “hegemonic masculinity” in the historical study of masculinities in early‐twentieth‐century Iran (c.1890–1941). It argues that a radical problematizing of the concepts of hegemony, class, “the West,” and patriotism helps us move beyond the binaries of Western‐Iranian and modern ...
Ali Hashemian
wiley   +1 more source

Variability of the transitional T Tauri star T Chamaeleontis [PDF]

Astronomy & Astrophysics, 2009
We characterize the physical properties of T Chamaeleontis, a transitional T Tauri star showing UX Ori-type variability, and of its associated disc, and probe possible effects of disc clearing processes. Different spectral diagnostics are examined, based on a rich collection of optical high- and low-resolution spectra. We determine radial and projected
Schisano, E., Covino, E., Alcala', J. M., Esposito, M., Gandolfi, D., Guenther, E. W.   +5 more
openaire   +2 more sources

The magnetic fields of intermediate-mass T Tauri stars. I. Magnetic detections and fundamental stellar parameters [PDF]

, 2019
International audienceContext : .The origin of the fossil magnetic fields detected in 5 to 10% of intermediate-mass main sequence stars is still highly debated.
Johns-Krull, C., F. Gallet, Lebreton, Y.,, Johns-Krull, C.,, Bouvier, J.,, Petit, P., Haemmerlé, L., Böhm, T., T. Böhm, Charbonnel, C.,, J. Morin, Haemmerle, L.,, Marsden, S. C., Charbonnel, Corinne, Marsden, C., Morin, J., L. Haemmerlé, Kochukhov, Oleg,, Lebreton, Y., Petit, P.,, C. Charbonnel, Charbonnel, C., Alecian, E.,, Amard, L.,, Hussain, G.,, Alecian, E., Morin, J.,, Folsom, C. P.,, G. Hussain, S. C. Marsden, Folsom, C. P., P. Petit, Hussain, G., Amard, L., E. Alecian, C. Johns-Krull, Marsden, S. C.,, L. Amard, J. Bouvier, C. P. Folsom, Villebrun, F.,, Y. Lebreton, Bouvier, J., O. Kochukhov, Gallet, F.,, Folsom, C., Bohm, T.,, Villebrun, F., Gallet, F., Kochukhov, O., F. Villebrun   +50 more
core   +1 more source

Observational Tests of Magnetospheric Accretion Models in Young Stars

EPJ Web of Conferences, 2014
Magnetically controlled accretion of disk material onto the surface of Classical T Tauri stars is the dominant paradigm in our understanding of how these young stars interact with their surrounding disks.
Johns–Krull Christopher M., Cauley P. Wilson   +1 more
doaj   +1 more source

What Is Justice? Reflections on the Criminal Justice System in Brazil

The British Journal of Sociology, EarlyView.
ABSTRACT This essay explores the possibility of justice for the wretched of the earth. Using escrevivência (writing the experience/existence) and drawing on the theoretical insights and political praxis of the Assessoria Popular Maria Felipa (APMF, Maria Felipa Advocacy Group)—a Brazilian abolitionist organization led by Black activists—we analyze how ...
Fernanda Oliveira, Isabela Corby, Juliana Góes   +2 more
wiley   +1 more source

The Spectral Variability of the T Tauri Star DF Tauri [PDF]

The Astrophysical Journal, 1997
We analyze 117 echelle spectra of the T Tauri star DF Tau, concentrating on variations in the optical continuum veiling and the strong emission lines. Although this star was the inspiration for the original suggestion of magnetospheric accretion in T Tauri stars (TTSs), this hypothesis is only partially supported in our data. We find that variations in
Christopher M. Johns‐Krull, Gibor Basri   +1 more
openaire   +1 more source

High-energy radiation from T Tauri stars [PDF]

, 2022
T Tauri stars are young, low mass, pre-main sequence stars surrounded by an accretion disk. These objects present strong magnetic activity and powerful magnetic reconnection events.
Luque Escamilla, Pedro, Martí, Josep, Valle, María Victoria del, Romero, Gustavo Esteban   +3 more
core  

ON THE SPECTRAL AND PHOTOMETRIC ACTIVITY IN YOUNG STARS

Odessa Astronomical Publications, 2017
Results of long time homogenous medium resolution spectral observations of classic T Tauri type stars DI Cep, T Tau and GW Ori obtained during 1972-1990 are analyzed.
N. Z. Ismailov
doaj   +1 more source