Results 111 to 120 of about 412,693 (262)

High-velocity Blue-shifted Fe xxv Heα Line during a Superflare of the RS Canum Venaticorum–type Star IM Peg

The Astrophysical Journal Letters
The Monitor of All-sky X-ray Image (MAXI) detected a superflare, releasing 5 × 10 ^37 erg in 2−10 keV, of the RS CVn-type star IM Peg at 10:41 UT on 2023 July 23 with its Gas Slit Camera (2−30 keV).
Shun Inoue, Wataru Buz Iwakiri, Teruaki Enoto, Hiroyuki Uchida, Miki Kurihara, Masahiro Tsujimoto, Yuta Notsu, Kenji Hamaguchi, Keith Gendreau, Zaven Arzoumanian, Takeshi Go Tsuru   +10 more
doaj   +1 more source

New Evidence for Mass Loss from delta Cephei from HI 21-cm Line Observations

, 2011
Recently published Spitzer observations of the classical Cepheid archetype delta Cephei revealed an extended dusty nebula surrounding this star and its hot companion.
Alongi, Andrievsky, Armstrong, Barmby, Begum, Benedict, Bono, Bono, Bono, Bono, Cantiello, Caputo, Cassisi, Comerón, Condon, Deasy, Deutsch, Evans, Evans, Freedman, G. Bono, Gérard, Havlen, Heiles, Holzer, Isaacman, Judge, Keller, L. D. Matthews, Lamers, M. Marengo, Marengo, Marengo, Matthews, Matthews, Matthews, Mérand, N. R. Evans, Natale, Neilson, Neilson, Perley, Pietrinferni, Raga, Reimers, Reimers, Roberts, Sahai, Samus, Skinner, Turner, Ueta, Ueta, Ueta, Villaver, Wareing, Wareing, Wareing, Wilkin, Wilson   +59 more
core   +1 more source

Active Galactic Nucleus Star Dynamics Under the Influence of Outflow–Ambient Interactions

The Astrophysical Journal
Stars with outflows interacting with ambient gas experience accelerations arising from the gravitational feedback induced by the interaction structure.
Muxin Liu, Lile Wang, Peng Peng
doaj   +1 more source

Multiple stellar population mass loss in massive Galactic globular clusters [PDF]

, 2023
E Lacchin, A. Mastrobuono-Battisti, F. Calura, Carlo Nipoti, A. P. Milone, M. Meneghetti, Eros Vanzella   +6 more
openalex   +3 more sources

Can the Anomalous Magnetic Braking of Ap/Bp Stars Explain the Orbital Decay of Algol-type Binaries?

The Astrophysical Journal
Several Algol-type binaries were detected to be experiencing rapid orbital decay, which is in contradiction with the conservative mass transfer model. In this work, we investigate whether anomalous magnetic braking (MB) of intermediate-mass Ap/Bp stars ...
Guan-Long Wu, Zhao-Yu Zuo, Wen-Cong Chen
doaj   +1 more source

ATMOSPHERE EXPANSION AND MASS LOSS OF CLOSE-ORBIT GIANT EXOPLANETS HEATED BY STELLAR XUV. II. EFFECTS OF PLANETARY MAGNETIC FIELD; STRUCTURING OF INNER MAGNETOSPHERE [PDF]

, 2015
M. L. Khodachenko, I. F. Shaikhislamov, H. Lammer, P. A. Prokopov   +3 more
openalex   +1 more source

Observations and Radiative Transfer Simulations of the Carbon-rich AGB Star V Oph with VLTI/MATISSE

The Astrophysical Journal
Carbon-rich asymptotic giant branch (AGB) stars are among the most important contributors of enriched materials to the interstellar medium due to their strong stellar winds.
Jon Hulberg, Gioia Rau, Markus Wittkowski   +2 more
doaj   +1 more source

New insight into the physics of atmospheres of early type stars [PDF]

The phenomenon of mass loss and stellar winds from hot stars are discussed. The mass loss rate of early type stars increases by about a factor of 100 to 1000 during their evolution.
Lamers, H. J. G. L. M.
core   +1 more source

Mass Loss in 2D ZAMS Stellar Models

, 2011
A large number of massive stars are known to rotate, resulting in significant distortion and variation in surface temperature from the pole to the equator. Radiatively driven mass loss is temperature dependent, so rapid rotation produces variation in mass loss and angular momentum loss rates across the surface of the star, which is expected to affect ...
openaire   +2 more sources

Binary Stars Approaching Supermassive Black Holes: Hydrodynamics of Stellar Collisions, Mass Fallback, and Partial Tidal Disruption Events

The Astrophysical Journal
When binaries are injected into low-angular-momentum orbits around a central supermassive black hole (SMBH), various outcomes can occur, including binary tidal breakup, double stellar disruptions, and stellar collision.
Fangyuan Yu, Dong Lai
doaj   +1 more source