Results 11 to 20 of about 887,903 (202)

Massive stars in transition [PDF]

open access: yesEAS Publications Series, 2004
We discuss the various post-main sequence phases of massive stars, focusing on Wolf-Rayet stars, Luminous Blue Variables, plus connections with other early-type and late-type supergiants. End states for massive stars are also investigated, emphasising connections between Supernovae originating from core-collapse massive stars and Gamma Ray Bursts.
P. A. Crowther
openaire   +3 more sources

The Evolution of Massive Binary Stars

open access: yesAnnual Review of Astronomy and Astrophysics
Massive stars play a major role in the evolution of their host galaxies and serve as important probes of the distant Universe. It has been established that the majority of massive stars reside in close binaries and interact with their companion stars during their lifetimes.
Pablo Marchant, Julia Bodensteiner
exaly   +4 more sources

Modelling and observations of molecules in discs around young stars [PDF]

open access: yes, 2013
This thesis contains a study of molecules within circumstellar discs around young stars. Firstly, the chemistry of a disc around a young, Class 0 protostar is modelled.
Ilee, John David
core   +6 more sources

B-type host stars revealed by exoplanets around massive secondary-clump giant stars [PDF]

open access: yesNature Communications
Exoplanets around massive young stars, including hot spectral-class B (B-type) stars, are rare but important for understanding how planets form and survive. Most known examples are either very distant companions found by direct imaging or extremely close-
Wen-Xu Lin   +14 more
doaj   +2 more sources

Multiplicity of Massive Stars [PDF]

open access: yesSymposium - International Astronomical Union, 2001
We discuss the observed multiplicity of massive stars and implications on theories of massive star formation. After a short summary of the literature on massive star multiplicity, we focus on the O-and B-type stars in the Orion Nebula Cluster, which constitute a homogenous sample of very young massive stars.
Preibisch, Thomas   +2 more
openaire   +2 more sources

The stability of massive stars [PDF]

open access: yesSymposium - International Astronomical Union, 1994
An investigation of the stability properties of stellar models describing massive stars is motivated observationally by the necessity to explain the observed Humphreys - Davidson (HD) limit and the variability of the most massive stars known, i.e. the existence of luminous blue variables (LBVs).
W. Glatzel, M. Kiriakidis, K. J. Fricke
openaire   +1 more source

On the Formation of Massive Stars [PDF]

open access: yesThe Astrophysical Journal, 2002
We calculate numerically the collapse of slowly rotating, non-magnetic, massive molecular clumps, which conceivably could lead to the formation of massive stars. Because radiative acceleration on dust grains plays a critical role in the clump's dynamical evolution, we utilize a wavelength-dependent radiation transfer and a three component dust model ...
Yorke, Harold W., Sonnhalter, Cordula
openaire   +2 more sources

Eta Carinae: The Dissipating Occulter Is an Extended Structure

open access: yesThe Astrophysical Journal, 2023
Previous Hubble Space Telescope (HST)/Space Telescope Imaging Spectrograph (STIS) longslit observations of Eta Carinae ( η Car) identified numerous absorption features in both the stellar spectrum, and in the adjacent nebular spectra, along our line of ...
Theodore R. Gull   +13 more
doaj   +1 more source

The evolution of massive binary systems [PDF]

open access: yesSerbian Astronomical Journal, 2020
The evolution of massive stars in close binary systems is significantly different from single star evolution due to a series of interactions between the two stellar components.
Petrović Jelena
doaj   +1 more source

Massive Star Evolution [PDF]

open access: yesSymposium - International Astronomical Union, 1999
The evolution of massive stars is far from being fully understood, as we outline by pointing to a number of open problems related to massive stars in the Magellanic Clouds. We argue that rotation may be a key ingredient in the physics of massive stars.
Langer, Norbert (Prof. Dr.)   +1 more
openaire   +2 more sources

Home - About - Disclaimer - Privacy