Results 121 to 130 of about 412,693 (262)

Stellar magnetic activity – Star-Planet Interactions

open access: yesEPJ Web of Conferences, 2015
Stellar magnetic activity is an important factor in the formation and evolution of exoplanets. Magnetic phenomena like stellar flares, coronal mass ejections, and high-energy emission affect the exoplanetary atmosphere and its mass loss over time.
Poppenhaeger, K.
doaj   +1 more source

Li Enrichment in Red Clump Giants: Clues for Past Binary Interaction or Merger Events

open access: yesThe Astrophysical Journal Letters
To understand the underlying mechanisms of high Li abundances among core He-burning or red clump (RC) giants, we analyzed a sample of 5227 RC giants of mass M ≤ 2 M _⊙ using spectra and asteroseismic data.
Raghubar Singh   +3 more
doaj   +1 more source

Conference summary: Mass loss from stellar clusters

open access: yes, 2007
This conference dealt with the mass loss from stars and from stellar clusters. In this summary of the cluster section of the conference, I highlight some of the results on the formation and the fundamental properties of star clusters (Sect. 2), the early stages of their evolution (Sect.
openaire   +2 more sources

A Revised Density Estimate for the Largest Known Exoplanet, HAT-P-67 b

open access: yesThe Astronomical Journal
Low-density ( ρ _p  
Gavin Wang   +9 more
doaj   +1 more source

JWST/MIRI Detection of [Ne v], [Ne vi], and [O iv] Wind Emission in the O9 V Star 10 Lacertae

open access: yesThe Astrophysical Journal Letters
We report the detection of broad, flat-topped emission in the fine-structure lines of [Ne v ], [Ne vi ], and [O iv ] in mid-infrared spectra of the O9 V star 10 Lacertae obtained with James Webb Space Telescope/Mid-Infrared Instrument.
David R. Law   +7 more
doaj   +1 more source

A Model for Eruptive Mass Loss in Massive Stars

open access: yesThe Astrophysical Journal
Eruptive mass loss in massive stars is known to occur, but the mechanism(s) are not yet well understood. One proposed physical explanation appeals to opacity-driven super-Eddington luminosities in stellar envelopes.
Shelley J. Cheng   +5 more
doaj   +1 more source

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