Results 21 to 30 of about 319,282 (323)

Photoevaporation and Close Encounters: How the Environment around Cygnus OB2 Affects the Evolution of Protoplanetary Disks

open access: yesThe Astrophysical Journal Supplement Series, 2023
In our Galaxy, star formation occurs in a variety of environments, with a large fraction of stars formed in clusters hosting massive stars. OB stars have an important feedback on the evolution of protoplanetary disks orbiting around nearby young stars ...
M. G. Guarcello   +12 more
doaj   +1 more source

A Catalog of New Slowly Pulsating B-type Stars

open access: yesThe Astrophysical Journal Supplement Series, 2023
This paper reports the discovery of new slowly pulsating B-type stars. Based on the photometric, spectral, and astrometric data of the TESS, LAMOST, and Gaia surveys, we have found 286 new slowly pulsating B-type (SPB) stars and 21 candidates.
Xiang-dong Shi   +3 more
doaj   +1 more source

Observations of magnetic fields in hot stars [PDF]

open access: yes, 2010
The presence of magnetic fields at the surfaces of many massive stars has been suspected for decades, to explain the observed properties and activity of OB stars. However, very few genuine high-mass stars had been identified as magnetic before the advent
Aurière   +16 more
core   +1 more source

Massive Stars and Their Supernovae [PDF]

open access: yes, 2010
Massive stars and their supernovae are prominent sources of radioactive isotopes, the observations of which thus can help to improve our astrophysical models of those. Our understanding of stellar evolution and the final explosive endpoints such as supernovae or hypernovae or gamma-ray bursts relies on the combination of magneto-hydrodynamics, energy ...
Thielemann, F.   +3 more
openaire   +3 more sources

Understanding the Death of Massive Stars Using an Astrophysical Transients Observatory

open access: yesFrontiers in Astronomy and Space Sciences, 2018
The death of massive stars, manifested as gamma-ray bursts and core-collapse supernovae, critically influence how the universe formed and evolves. Despite their fundamental importance, our understanding of these enigmatic objects is severely limited.
Peter W. A. Roming   +26 more
doaj   +1 more source

Maser, infrared and optical emission for late-type stars in the Galactic plane [PDF]

open access: yes, 2017
Radio astrometric campaigns using VLBI have provided distances and proper motions for masers associated with young massive stars (BeSSeL survey). The ongoing BAaDE project plans to obtain astrometric information of SiO maser stars located in the inner ...
Brown, A. G. A.   +6 more
core   +3 more sources

Super-Massive Stars: Dense Star-Gas Systems [PDF]

open access: yes, 2006
3 pages, 1 figure. Necessary files also uploaded. To appear in "Lighthouses of the Universe", Springer-Verlag series "ESO Astrophysics Symposia"
Amaro-Seoane, Pau   +2 more
openaire   +2 more sources

On the ongoing multiple blowout in NGC 604 [PDF]

open access: yes, 2000
Several facts regarding the structure of NGC 604 are examined here. The three main cavities, produced by the mechanical energy from massive stars which in NGC 604 are spread over a volume of 10$^6$ pc$^3$, are shown here to be undergoing blowout into the
Casiana Munoz‐Tunon   +10 more
core   +2 more sources

Gravoturbulent Star Formation: Effects of the Equation of State on Stellar Masses [PDF]

open access: yes, 2005
Stars form by gravoturbulent fragmentation of interstellar gas clouds. The supersonic turbulence ubiquitously observed in Galactic molecular gas generates strong density fluctuations with gravity taking over in the densest and most massive regions ...
Jappsen, A. -K.   +2 more
core   +2 more sources

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.
openaire   +2 more sources

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