Results 181 to 190 of about 44,379 (345)
Spectrophotometry of emission-line stars in the magellanic clouds
, 1990 The strong emission lines in the most luminous stars in the Magellanic Clouds indicate that these stars have such strong stellar winds that their photospheres are so masked that optical absorption lines do not provide an accurate measure of photospheric ...
Bohannan, Bruce
core
Surface Tension Measurement of Ti‐6Al‐4V by Falling Droplet Method in Oxygen‐Free Atmosphere
Advanced Engineering Materials, EarlyView.In this article, the temperature‐dependent surface tension of free falling, oscillating Ti‐6Al‐4V droplets is investigated in both argon and monosilane doped, oxygen‐free atmosphere. Droplet temperature and oscillation are captured with one single high‐speed camera, and the surface tension is calculated with Rayleigh's formula.
Johannes May +9 more
wiley +1 more source
Creating Ti–Fe α/β Alloys by Diffusion‐Driven Solid‐State Processing
Advanced Engineering Materials, EarlyView.This study proposes making alloys containing fast diffusing elements that are difficult to produce by ingot metallurgy, by diffusion‐driven solid‐state HIP processing of elemental powders and low‐temperature homogenisation. Here, novel Fe‐Ti α–β alloys are formed having fine α–β lamellae, a small β prior grain size without significant intermetallics ...
Jiaqi Xu +10 more
wiley +1 more source
The Astrophysical Journal LettersThe post-main-sequence evolution of massive stars involves phases of intense, often eruptive mass loss, including the B[e] supergiant phase. These hot stars are surrounded by cool, dense circumstellar disks that host complex chemistry, producing both ...
María Laura Arias +3 more
doaj +1 more source
Bloated stars as AGN broad-line clouds: the emission-line response to continuum variations [PDF]
, 1997 T. Alexander
openalex +1 more source
Inclination Bias in Techniques Used to Identify Be Star Candidates
The Astrophysical JournalSeveral methods for identifying Be star candidates are reviewed for observational bias with respect to system inclination, that is the angle between the stellar and disk rotation axis and the observer’s line of sight, with focus on two photometric ...
B. D. Lailey, T. A. A. Sigut
doaj +1 more source
The nature and origin of disky elliptical galaxies [PDF]
, 2002 The observational trend that disky elliptical galaxies exhibit younger luminosity- weighted ages than boxy ellipticals is investigated. The presence of a possible young stellar disk embedded in these galaxies is explored by comparing kinematics derived ...
McDermid, Richard Morgan
core
Advanced Engineering Materials, EarlyView.Selenium was incorporated into a sol–gel‐derived bioactive glass to enable sustained therapeutic ion release. The selenium‐containing glass preserved bioactivity while selectively inducing cytotoxicity in osteosarcoma cells and maintaining osteoblastic viability.
Breno Rocha Barrioni +7 more
wiley +1 more source
Line Emission from Gas in Optically Thick Dust Disks around Young Stars [PDF]
, 2008 Uma Gorti, D. J. Hollenbach
openalex +1 more source
Polarimetry in the Emission Lines of Shell Stars [PDF]
Monthly Notices of the Royal Astronomical Society, 1974 V. George, S. J. Coyne, P. J. Treanor
openaire +1 more source