scholarly journals An observational asteroseismic study of the pulsating B-type stars in the open cluster NGC 884

2013 ◽  
Vol 9 (S301) ◽  
pp. 479-480
Author(s):  
S. Saesen ◽  
M. Briquet ◽  
C. Aerts ◽  
A. Miglio ◽  
F. Carrier

AbstractRecent progress in the seismic interpretation of field β Cep stars has resulted in improvements of the physical description in the stellar structure and evolution model computations of massive stars. Further asteroseismic constraints can be obtained from studying ensembles of stars in a young open cluster, which all have similar age, distance and chemical composition. We present an observational asteroseismic study based on the discovery of numerous multi-periodic and mono-periodic B-type stars in the open cluster NGC 884 (χ Persei). Our study illustrates the current status of ensemble asteroseismology of this young open cluster.

2014 ◽  
Vol 9 (S307) ◽  
pp. 140-141
Author(s):  
Thierry Semaan ◽  
Thierry Morel ◽  
Eric Gosset ◽  
Juan Zorec ◽  
Yves Frémat ◽  
...  

AbstractIn the framework of the Gaia-ESO survey we have determined the fundamental parameters of a large number of B-type stars in the Galactic, young open cluster NGC 3293. The determination of the stellar parameters is based on medium-resolution spectra obtained with FLAMES/GIRAFFE at ESO-VLT. As a second step, we adopted the accurate parameters to determine the chemical abundances of these hot stars. We present a comparison of our results with those obtained by the 'VLT-FLAMES survey of massive stars' (Evans et al. 2005). Our study increases the number of objects analysed and provides an extended view of this cluster.


2006 ◽  
Vol 2 (S240) ◽  
pp. 619-621
Author(s):  
John Southworth

AbstractDetached eclipsing binaries are very useful objects for calibrating theoretical stellar models and checking their predictions. Detached eclipsing binaries in open clusters are particularly important because of the additional constraints on their age and chemical composition from their membership of the cluster. I compile a list containing absolute parameters of well-studied eclipsing binaries in open clusters, and present new observational data on the B-type systems V1481 Cyg and V2263 Cyg which are members of the young open cluster NGC 7128.


2009 ◽  
Vol 496 (2) ◽  
pp. 453-463 ◽  
Author(s):  
M. G. Guarcello ◽  
G. Micela ◽  
F. Damiani ◽  
G. Peres ◽  
L. Prisinzano ◽  
...  

2021 ◽  
Author(s):  
Sourav Ghosh ◽  
Arindam Modak ◽  
Arnab Samanta ◽  
Kanika Kole ◽  
Subhra Jana

A comprehensive and critical in-depth discussion on the development and prospect of several advanced materials for conversion of CO2 to value added chemicals is provided, together with their current status, technical feasibility and future opportunities.


2000 ◽  
Vol 120 (1) ◽  
pp. 333-348 ◽  
Author(s):  
Hwankyung Sung ◽  
Moo-Young Chun ◽  
Michael S. Bessell

2009 ◽  
Vol 138 (4) ◽  
pp. 1116-1136 ◽  
Author(s):  
Hwankyung Sung ◽  
John R. Stauffer ◽  
Michael S. Bessell

2013 ◽  
Vol 775 (2) ◽  
pp. 123
Author(s):  
Chien-Cheng Lin ◽  
W. P. Chen ◽  
Neelam Panwar

2010 ◽  
Vol 331 (3) ◽  
pp. 312-322
Author(s):  
G. Maciejewski ◽  
L. Bukowiecki

2007 ◽  
Vol 3 (S246) ◽  
pp. 105-106
Author(s):  
Ella K. Braden ◽  
Robert D. Mathieu ◽  
Sören Meibom

AbstractWe present current results from the ongoing WIYN Open Cluster Study radial-velocity survey for 1410 stars in the young (150 Myr) open cluster M35 (NGC 2168) and establish a benchmark for initial conditions in young open clusters. We find for periods ≲ 1000 days a minimum binary frequency of 0.36 – 0.51. We also analyze the spatial, period and eccentricity distributions of the binary systems and find that the period and eccentricity distributions are well approximated by scaled field distributions from Duquennoy & Mayor (1991). With our large sample size and long baseline, we have a unique understanding of the binary population in this young cluster, making it ideal for defining initial conditions for dynamical simulations.


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