Results 31 to 40 of about 409,343 (365)
The Astrophysical Journal, 2023 Eta Carinae ( η Car) exhibits a unique set of P Cygni profiles with both broad and narrow components. Over many decades, the spectrum has changed—there has been an increase in observed continuum fluxes and a decrease in Fe ii and H i emission-line ...
Augusto Damineli +25 more
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Radio observations of stellar mass loss [PDF]
Symposium - International Astronomical Union, 1979 A program to search for steady-state thermal emissions from stars has been in progress for several years in Canada (Purton 1976). In this program we have specifically excluded flaring objects (such as β Lyr or HR1099) where non-thermal emission is probably responsible.
Sun Kwok, C. R. Purton
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The Astrophysical Journal, 2023 Stellar coronal mass ejections (CMEs) have recently received much attention for their impacts on exoplanets and stellar evolution. Detecting prominence eruptions, the initial phase of CMEs, as the blueshifted excess component of Balmer lines is a ...
Shun Inoue +7 more
doaj +1 more source
Critical Rates of Stellar Mass Loss [PDF]
Symposium - International Astronomical Union, 1979 Many of the effects of mass loss on OB stars have now been explored. Mass loss will cause a star to be overluminous for its mass (though less luminous than a star of its original mass) and, for moderate mass-loss rates, the luminosity decreases at the same rate as the mass contained in the convective core decreases causing the main sequence lifetime to
D. S. P. Dearborn, J. B. Blake
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Photoevaporation versus core-powered mass-loss: model comparison with the 3D radius gap [PDF]
Monthly notices of the Royal Astronomical Society, 2021 The EUV/X-ray photoevaporation and core-powered mass-loss models are both capable of reproducing the bimodality in the sizes of small, close-in exoplanets observed by the Kepler space mission, often referred to as the ‘radius gap’.
James G. Rogers +3 more
semanticscholar +1 more source
Mass Loss of Different Stellar Populations in Globular Clusters: The Case of M4 [PDF]
Proceedings of the International Astronomical Union, 2019 In a Globular Cluster (GC), the mass loss during the red giant branch (RGB) phase and the helium content are fundamental ingredients to constrain the horizontal-branch (HB) morphology.
M. Tailo +5 more
semanticscholar +1 more source
On stellar mass loss from galaxies in groups and clusters [PDF]
, 2017 We estimate the stellar mass that satellite galaxies lose once they enter groups (and clusters) by identifying groups in a high-resolution cosmological N-body simulation, assigning entry masses to satellite galaxies with halo abundance matching at the ...
'Edouard Tollet +4 more
semanticscholar +1 more source
On the deuterium abundance and the importance of stellar mass loss in the interstellar and intergalactic medium [PDF]
, 2017 We quantify the gas-phase abundance of deuterium and fractional contribution of stellar mass loss to the gas in cosmological zoom-in simulations from the Feedback In Realistic Environments project.
F. Voort +7 more
semanticscholar +1 more source
PARSEC V2.0: Stellar tracks and isochrones of low and intermediate mass stars with rotation [PDF]
Astronomy & Astrophysics, 2022 We present a new comprehensive collection of stellar evolutionary tracks and isochrones for rotating low- and intermediate-mass stars assembled with the updated version of PARSEC V2.0. This version includes our recent calibration of the extra mixing from
C. Nguyen +8 more
semanticscholar +1 more source
EVOLUTION OF PLANETARY ORBITS WITH STELLAR MASS LOSS AND TIDAL DISSIPATION [PDF]
, 2013 Intermediate mass stars and stellar remnants often host planets, and these dynamical systems evolve because of mass loss and tides. This paper considers the combined action of stellar mass loss and tidal dissipation on planetary orbits in order to ...
F. Adams, A. Bloch
semanticscholar +1 more source