Results 51 to 60 of about 5,935,155 (266)

WIYN OPEN CLUSTER STUDY. XXXVI. SPECTROSCOPIC BINARY ORBITS IN NGC 188 [PDF]

, 2015
We present 98 spectroscopic binary orbits resulting from our ongoing radial velocity survey of the old (7 Gyr) open cluster NGC 188. All but 13 are high-probability cluster members based on both radial velocity and proper motion membership analyses ...
A. Geller, R. Mathieu, H. Harris, R. Mcclure   +3 more
semanticscholar   +1 more source

A comparative study on the reliability of open cluster parameters [PDF]

, 2015
Open clusters are known as excellent tracers of the structure and chemical evolution of the Galactic disk, however, the accuracy and reliability of open cluster parameters is poorly known.
M. Netopil, E. Paunzen, Giovanni Carraro, Giovanni Carraro   +3 more
semanticscholar   +1 more source

A New Linear Two-State Dynamical Model for Athletic Performance Prediction in Elite-Level Soccer Players

Mathematics
Recent advancements in wearable technology have allowed researchers to collect high-resolution data on athletes’ workloads and performance, paving the way for more accurate mathematical models in sports science. In this paper, inspired by the modeling of
Nicolò Colistra, Vincenzo Manzi, Samir Maikano, Francesco Laterza, Rosario D’Onofrio, Cristiano Maria Verrelli   +5 more
doaj   +1 more source

SPECTROSCOPIC ABUNDANCES IN THE OPEN CLUSTER NGC 6819 [PDF]

, 2015
High-dispersion spectra of 333 stars in the open cluster NGC 6819, obtained using the HYDRA spectrograph on the WIYN 3.5 m telescope, have been analyzed to determine the abundances of iron and other metals from lines in the 400 Å region surrounding the ...
Donald B. Lee-Brown, B. Anthony-Twarog, C. Deliyannis, Evan A. Rich, B. Twarog   +4 more
semanticscholar   +1 more source

Hofstede`s model in the context of e-government and open government in EU countries: countries clustering based on similarities and differences

Smart Cities and Regional Development Journal, 2019
This research tries to answer the question “How does the Hofstede`s Model of societal cultural differences relate to the development of EU countries e-government and open government?”. This question of interest in the research comes from the growing
Hari Stankov NIKOLOV, Milena Yordanova KRUMOVA   +1 more
doaj   +1 more source

Asteroseismology in Open Clusters [PDF]

International Astronomical Union Colloquium, 1995
Within two groups or networks we are trying to build the observational fundamentals for better tests of stellar evolution. The first group is STACC (Small Telescope Array with CCD Cameras) and the second the EU HCM program ANTENA (involving institutes in Spain, France and Denmark).The first information needed is photometric data.
S. Frandsen, M. Viskum, M.M. Hernandéz, J.A. Belmonte   +3 more
openaire   +1 more source

Open Cluster Study Using Gaia. I. Membership and Cluster Properties

The Astrophysical Journal
Star clusters are interesting laboratories to study star formation, single and binary stellar evolution, and stellar dynamics. We have used the exquisite data from Gaia’s Data Release 3 (DR3) to study 21 relatively rich and nearby open clusters with ...
Anindya Ganguly, Prasanta K. Nayak, Sourav Chatterjee   +2 more
doaj   +1 more source

Astrometric and photometric study of the open cluster NGC 2323 [PDF]

Serbian Astronomical Journal, 2017
We present a study of the open cluster NGC 2323 using astrometric and photometric data. In our study we used two methods that are able to separate open cluster’s stars from those that belong to the stellar background. Our results of calculations
Amin M.Y., Elsanhoury W.H.
doaj   +1 more source

Determining open cluster membership [PDF]

Astronomy & Astrophysics, 2018
Aims.My goal is to develop a quantitative algorithm for assessing open cluster membership probabilities. The algorithm is designed to work with single-epoch observations. In its simplest form, only one set of program images and one set of reference images are required.Methods.The algorithm is based on a two-stage joint astrometric and photometric ...
openaire   +1 more source

A comprehensive study of the open cluster NGC 6866 [PDF]

, 2015
We present CCD $UBVRI$ photometry of the field of the open cluster NGC 6866. Structural parameters of the cluster are determined utilizing the stellar density profile of the stars in the field. We calculate the probabilities of the stars being a physical
Z. F. Bostancı, T. Ak, T. Yontan, Selçuk Bilir, T. Guver, S. Ak, Ö. Çakırlı, O. Özdarcan, E. Paunzen, P. Cat, J. Fu, Yue-Yang Zhang, Y. Hou, G. Li, Yongjiang Wang, Wei Zhang, Jingjing Shi, Yu-zhong Wu   +17 more
semanticscholar   +1 more source