Results 1 to 10 of about 1,063,077 (278)

The blue-edge problem of the V1093 Herculis instability strip revisited using evolutionary models with atomic diffusion [PDF]

open access: bronze, 2014
We have computed a new grid of evolutionary subdwarf B star (s dB) models from the start of central He burning, taking into a ccount atomic diffusion due to radiative levitation, gravitational settling , concentration di ffusion, and thermal di ffusion ...
S. Bloemen   +7 more
openalex   +3 more sources

Outcomes after thumb carpometacarpal joint stabilization with an abductor pollicis longus tendon strip for the treatment of chronic instability [PDF]

open access: hybridArchives of Orthopaedic and Trauma Surgery, 2019
Introduction Instabilities of the thumb carpometacarpal (CMC) joint, caused by idiopathic ligamentous hyperlaxity, trauma or other conditions may lead to pain, functional impairment and eventually osteoarthritis. Several techniques have been described to
Alexandra Stauffer   +6 more
openalex   +2 more sources

Turbulent convection and pulsation stability of stars – II. Theoretical instability strip forδScuti andγDoradus stars [PDF]

open access: bronze, 2016
By using a non-local and time-dependent convection theory, we have calculated radial and low-degree non-radial oscillations for stellar evolutionary models with M = 1.4-3.0 M-circle dot. The results of our study predict theoretical instability strips for
Dongbin Xiong   +3 more
openalex   +3 more sources

A SEARCH FOR MASS LOSS ON THE CEPHEID INSTABILITY STRIP USING H i 21 cm LINE OBSERVATIONS [PDF]

open access: bronze, 2016
We present the results of a search for H i 21 cm line emission from the circumstellar environments of four Galactic Cepheids (RS Pup, X Cyg, ζ Gem, and T Mon) based on observations with the Karl G. Jansky Very Large Array.
Lynn D. Matthews   +2 more
openalex   +3 more sources

A NEW MAPPING OF THE CEPHEID INSTABILITY STRIP

open access: greenOdessa Astronomical Publications, 2017
Results are presented for a new mapping of the instability strip for Milky Way Cepheids based upon eld reddenings for 40 stars (mainly members of open clusters and associations), color excesses for 53 stars obtained from reddening-independent systems ...
D. G. Turner
openalex   +3 more sources

ARE THE s-CEPHEIDS CROSSING THE INSTABILITY STRIP FOR THE FIRST TIME?

open access: greenOdessa Astronomical Publications, 2012
Using the literature data on secular period changes reported for the small-amplitude Cepheids (s-Cepheids) it is shown that these stars are not crossing the instability strip for the first time. After correction of the observed pulsational chracteristics
S. M. Andrievsky   +2 more
openalex   +3 more sources

Comparative seismology of pre- and main sequence stars in the instability strip [PDF]

open access: bronze, 2001
Pulsational properties of 1.8 $M_{\odot }$ stellar models covering the latest stages of contraction toward the main sequence up to early hydrogen burning phases are investigated by means of linear nonadiabatic analyses.
M. Suran   +5 more
openalex   +3 more sources

Pulsating and Non-pulsating Components of Detached Eclipsing Binaries in the $δ$ Scuti instability strip [PDF]

open access: greenThe Astronomical Journal
Pulsating detached eclipsing binary systems are crucial for studying the internal structure of oscillating stars. These systems are advantageous because binary effects on pulsations are minimal, allowing for more accurate determinations of fundamental ...
Filiz Kahraman Aliçavuş   +5 more
openalex   +2 more sources

A search for non-pulsating, chemically normal stars in the δ Scuti instability strip using Kepler data [PDF]

open access: bronze, 2015
We identify stars in the δ Sct instability strip that do not pulsate in p modes at the 50-μmag limit, using Kepler data. Spectral classification and abundance analyses from high-resolution spectroscopy allow us to identify chemically peculiar stars, in ...
Simon J. Murphy   +4 more
openalex   +3 more sources

The instability strip of ZZ Ceti white dwarfs [PDF]

open access: bronze, 2012
V. Van Grootel   +5 more
semanticscholar   +3 more sources

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