Results 31 to 40 of about 5,969 (301)

Magnetospheric outflows in young stellar objects

EPJ Web of Conferences, 2014
Different classes of outflows are associated with the magnetospheric activity of accreting T Tauri protostars. Stellar winds are accelerated along the open field lines anchored in the stellar surface; disk winds (extended or X-type) can be launched along
Zanni Claudio
doaj   +1 more source

A Study of Primordial Very Massive Star Evolution

The Astrophysical Journal, 2023
We present new evolutionary models of primordial very massive stars with initial masses ranging from 100 to 1000 M _⊙ that extend from the main sequence to the onset of dynamical instability caused by the creation of electron–positron pairs during core C,
Guglielmo Volpato, Paola Marigo, Guglielmo Costa, Alessandro Bressan, Michele Trabucchi, Léo Girardi   +5 more
doaj   +1 more source

The effects of stellar winds on the magnetospheres and potential habitability of exoplanets

, 2014
V.S. acknowledges the support of an STFC studentship. A.A.V. acknowledges support from a Royal Astronomical Society Fellowship and an Ambizione Fellowship from the Swiss National Science Foundation. S.V.J.
S. C. Marsden, Jeffers, Sandra V., P. Petit, S. V. Jeffers, Jardine, M., M. Jardine, A. A. Vidotto, Vidotto, A. A., Petit, P., V. See, Do Nascimento, J.D., J. D. do Nascimento, do Nascimento, Jose-Dias Jr., do Nascimento Jr., J. D., Jeffers, S.V., See, Wyke Chun Victor, Vidotto, A.A., Marsden, S. C., See, V., Jeffers, S. V., Marsden, S.C.   +20 more
core   +1 more source

A near-infrared interferometric survey of debris disc stars. III. First statistics based on 42 stars observed with CHARA/FLUOR [PDF]

, 2013
peer reviewedContext. Dust is expected to be ubiquitous in extrasolar planetary systems due to the dynamical activity of minor bodies. Inner dust populations are, however, still poorly known due to the high contrast and small angular separation with ...
Mérand, Antoine, Augereau, J. -C., Sturmann, Laszlo, Hanot, C., Monnier, J. D., E. Di Folco, Augereau, Jean-Charles, C. Hanot, J.-C. Augereau, McAlister, Harold, Mollier, Benjamin, Tuthill, Peter, Che, X., Tuthill, P. G., J. D. Monnier, Absil, O., Monnier, John, N. Turner, Kervella, Pierre, P. Kervella, Ertel, Steve, Sturmann, Judit, L. Sturmann, Absil, Olivier, Scott, Nicholas, Ertel, S., Defrère, D., Foresto, V. Coudé Du, V. Coudé du Foresto, Sturmann, L., ten Brummelaar, T. A., H. A. McAlister, Che, Xiao, ten Brummelaar, Theo, McAlister, H. A., Mérand, A., B. Mollier, D. Defrère, Scott, N., Thureau, N., Di Folco, E., P. G. Tuthill, Mollier, B., Coudé du Foresto, Vincent, Kervella, P., Turner, N., Brummelaar, T. A. Ten, A. Mérand, Turner, Nils, T. A. ten Brummelaar, Defrere, Denis, Scott, Nicholas William, N. Scott, Hanot, Charles, O. Absil, Coudé du Foresto, V., Thureau, Nathalie Danielle, N. Thureau, S. Ertel, X. Che, Di Folco, Emmanuel, Thureau, Nathalie, Sturmann, J., J. Sturmann   +63 more
core   +1 more source

Relativistic stellar jets: dynamics and non-thermal radiation

EPJ Web of Conferences, 2013
Relativistic stellar jets, produced in binary systems called microquasars, propagate through media with different spatial scales releasing their energy in the form of work and radiation from radio to gamma rays.
Bosch-Ramon Valentí
doaj   +1 more source

An Ultraviolet View of Stellar Winds [PDF]

Symposium - International Astronomical Union, 1979
Ultraviolet observations of mass-loss effects in O stars have, over the past decade, revealed a broad picture of a phenomenon whose extent was only partially evident from earlier ground-based observations. Ultraviolet resonance lines of a variety of ionization stages of several common elements provide a comprehensive probe of the low-density, extended ...
openaire   +1 more source

Observational evidences of stellar wind [PDF]

International Astronomical Union Colloquium, 1981
AbstractObservations mainly from the IUE Spectra of HD 152236 (Blla) have been used to provide support to the various aspects of the theory of stellar wind (SW) and its interaction with the interstellar medium (ISM). Lines arising from excited levels connected radiatively to the ground level tend to be more frequent and/or strong compared to those ...
openaire   +1 more source

Influence of surface stressing on stellar coronae and winds

, 2013
STFC funding has supported this research.The large-scale field of the Sun is well represented by its lowest energy (or potential) state. Recent observations, by comparison, reveal that many solar-type stars show large-scale surface magnetic fields that ...
Morin, J., Fares, R., Jardine, Moira, Donati, J. -F., Jardine, M., Morin, Julien, Fares, Rim, Donati, J.-F., Vidotto, A. A., Donati, Jean-François, Gombosi, T. I., van Ballegooijen, A., Gombosi, Tamas I.   +12 more
core   +1 more source

To see or not to see a bow shock. Identifying bow shocks with Ha allsky surveys

, 2005
OB-stars have the highest luminosities and strongest stellar winds of all stars, which enables them to interact strongly with their surrounding ISM, thus creating bow shocks. These offer us an ideal opportunity to learn more about the ISM.
D. Brown, Bomans, DJ, D. J. Bomans, Brown, D   +3 more
core   +1 more source

Line-driven Radiative Winds in B-supergiants: Bridging the Gap between Fast and Slow m-CAK Solutions

The Astrophysical Journal
The modified Castor, Abbott, and Klein (m-CAK) theory predicts different wind regimes based on the line force parameter for changes in ionization ( δ ) and the rotation parameter (Ω).
Matías Montesinos, Emil Zabala-Arroyo, Juan José Castro-Salgado, Michel Curé, Ignacio Araya   +4 more
doaj   +1 more source