Results 131 to 140 of about 307,688 (344)

A non-pulsating neutron star in the supernova remnant HESS J1731−347/G353.6−0.7 with a carbon atmosphere [PDF]

open access: bronze, 2013
D. Klochkov   +5 more
openalex   +1 more source

The origin of the Crab Nebula and the electron capture supernova in 8-10 M solar mass stars [PDF]

open access: yes
The chemical composition of the Crab Nebula is compared with several presupernova models. The small carbon and oxygen abundances in the helium-rich nebula are consistent with only the presupernova model of the star whose main sequence mass was MMS ...
Nomoto, K.
core   +1 more source

Synthetic Colors of Carbon Stars [PDF]

open access: yesSymposium - International Astronomical Union, 2000
Windsteig, W.   +4 more
openaire   +2 more sources

Carbon in Bright-Line Stars [PDF]

open access: yesNature, 1897
IN an article “On the Question of Carbon in Bright-line Stars,” in your issue of January 28, Prof. Lockyer makes the following statement in reference to our paper “On Wolf and Rayet's Bright-line Stars in Cygnus.”
openaire   +1 more source

Composite Electrospun Fibers Containing Optimized B‐ and Cu‐Doped Bioactive Glass Sol‐Gel Particles for Potential Soft Tissue Engineering Applications

open access: yesAdvanced Engineering Materials, EarlyView.
This article describes the preparation and characterization of poly(ε‐caprolactone) electrospun composite fibers incorporating sol‐gel‐derived bioactive glass particles doped with B and Cu. Scanning electron microscopy, energy‐dispersive X‐ray spectroscopy, Fourier‐transform infrared spectroscopy, contact angle, acellular bioactivity, mechanical and ...
Elisa Piatti   +5 more
wiley   +1 more source

LAMOST J1010+2358 is not a Pair-Instability Supernova Relic

open access: yesThe Open Journal of Astrophysics
The discovery of a star formed out of pair-instability supernova ejecta would have massive implications for the Population III star initial mass function and the existence of stars over 100 Msun, but none have yet been found.
Pierre Thibodeaux   +4 more
doaj   +1 more source

Study of variable extinction of hot stars with circumstellar dust shells [PDF]

open access: yes
Various projects on the topic of hot stars with circumstellar dust are reported. The surface temperature, wind speed, and interstellar reddening were determined for the variable WC7 star HD 193793.

core   +1 more source

Unlocking the Power of Quercetin‐Encapsulated Mesoporous Bioactive Glass Nanoparticles: A Multifunctional Approach to Bone Regeneration

open access: yesAdvanced Engineering Materials, EarlyView.
Mesoporous bioactive glass nanoparticles (MBGNs) are investigated for bone regeneration given their remarkable structural and functional properties. MBGNs are functionalized with Mn and Cu and incorporated with quercetin, a natural flavonoid exhibiting antioxidant, anti‐inflammatory, and antimicrobial properties.
Giovanni Lo Bello   +5 more
wiley   +1 more source

The Light Curve and Evolutionary Status of the Carbon Star V Hya [PDF]

open access: green, 1999
G. R. Knapp   +6 more
openalex   +1 more source

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