Results 21 to 30 of about 197,808 (272)

Massive Stars as the Radiant Queens of the Universe—The Case of ζ Puppis

open access: yesUniverse, 2022
Since the Cosmic Dawn, massive stars have been playing a crucial role as the chemical recycling engines of galaxies that enable the birth of new stars and planetary systems, not only through the strong winds that they exhibit during their relatively ...
Tahina Ramiaramanantsoa   +1 more
doaj   +1 more source

Observational Properties of 155 O- and B-type Massive Pulsating Stars

open access: yesThe Astrophysical Journal Supplement Series, 2023
O- and B-type (OB-type) pulsating stars are important objects for studying the structure and evolution of massive stars through asteroseismology. A large amount of data from various sky surveys provides an unprecedented opportunity to search for and ...
Xiang-dong Shi   +5 more
doaj   +1 more source

Nucleonic Direct Urca Processes and Cooling of the Massive Neutron Star by Antikaon Condensations

open access: yesAdvances in Astronomy, 2020
Nucleonic direct Urca processes and cooling of the massive neutron stars are studied by considering antikaon condensations. Calculations are performed in the relativistic mean field and isothermal interior approximations.
Yan Xu   +3 more
doaj   +1 more source

Zooming in to Massive Star Birth [PDF]

open access: yesThe Astrophysical Journal, 2018
Abstract We present high-resolution (0.″2, 1000 au) 1.3 mm ALMA observations of the massive infrared dark cloud clump, G028.37+00.07-C1, thought to harbor the early stages of massive star formation. Using (3–2), we resolve the previously identified C1-S core, separating the
Jonathan C. Tan   +6 more
openaire   +6 more sources

Monotonicity of the Cores of Massive Stars

open access: yesThe Astrophysical Journal, 2023
Abstract Massive stars are linked to diverse astronomical processes and objects including star formation, supernovae and their remnants, cosmic rays, interstellar media, and galaxy evolution. Understanding their properties is of primary importance for modern astronomy, and finding simple rules that characterize them is especially useful.
Koh Takahashi   +2 more
openaire   +4 more sources

Triggered Star Formation by Massive Stars [PDF]

open access: yesThe Astrophysical Journal, 2007
We present our diagnosis of the role that massive stars play in the formation of low- and intermediate-mass stars in OB associations (the Lambda Ori region, Ori OB1, and Lac OB1 associations). We find that the classical T Tauri stars and Herbig Ae/Be stars tend to line up between luminous O stars and bright-rimmed or comet-shaped clouds; the closer to ...
H. T. Lee, Wen Ping Chen
openaire   +3 more sources

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

Massive Star Formation [PDF]

open access: yes, 2007
21 pages, 6 figures, chapter in Diffuse Matter from Star Forming Regions to Active Galaxies - A Volume Honouring John Dyson, Edited by T.W. Hartquist, J. M. Pittard, and S. A. E. G. Falle. Series: Astrophysics and Space Science Proceedings.
José Franco, Melvin Hoare
openaire   +3 more sources

Search for Young and Intermediate-age Stellar Populations in the Galactic Center with Subaru/MOIRCS and CO Narrowband Filters

open access: yesThe Astrophysical Journal, 2023
Extinction toward the Galactic Center (GC) is extreme and limits observations of its stars to the infrared. In addition, the extinction varies on scales of arcseconds.
Shogo Nishiyama   +2 more
doaj   +1 more source

The Complex Upper HR Diagram

open access: yesGalaxies, 2019
Several decades of observations of the most massive and most luminous stars have revealed a complex upper HR Diagram, shaped by mass loss, and inhabited by a variety of evolved stars exhibiting the consequences of their mass loss histories.
Roberta M. Humphreys
doaj   +1 more source

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