Results 101 to 110 of about 5,935,155 (266)

Stellar Variability toward the Galactic Open Cluster NGC 7209

The Astrophysical Journal
We present the analysis of stellar variability in an open cluster NGC 7209 using optical V -band CCD photometric observations. Out of 4499 stars in our study, we detected 284 candidate variables, including one identified previously.
Dorothy M. Mwanzia, Sneh Lata, W. P. Chen, Soumen Mondal, Geoffrey Okeng’o, John Buers, Samrat Ghosh, Athul Dileep, Arjav Jain, Alisher S. Hojaev, Santosh Joshi   +10 more
doaj   +1 more source

The orbit of the old, metal-rich, open cluster NGC 6791

EPJ Web of Conferences, 2012
We present a study of the Galactic orbit of the old, metal-rich open cluster NGC 6791. To recover its recent kinematical history we integrate the cluster’s orbit backward in a Milky Way (MW) model including bar and spiral structure.
Minchev I., Jílková L., Carraro G., Jungwiert B.   +3 more
doaj   +1 more source

Wide Field Multicolor CCD Photometry of the Open Cluster NGC752

Open Astronomy, 2010
The results of CCD photometry in the seven-color Vilnius system of 3058 stars down to V ~ 18.0 mag in a 1.5 square degree field around the cluster NGC 752 are presented.
Zdanavičius J., Bartašiutė S., Zdanavičius K.   +2 more
doaj   +1 more source

β,β-Isomer of Open-Wells–Dawson Polyoxometalate Containing a Tetra-Iron(III) Hydroxide Cluster: [{Fe4(H2O)(OH)5}(β,β-Si2W18O66)]9−

Inorganics, 2016
The β,β-isomer of open-Wells–Dawson polyoxometalate (POM) containing a tetra-iron(III) cluster, K9[{Fe4(H2O)(OH)5}(β,β-Si2W18O66)]·17H2O (potassium salt of β,β-Fe4-open), was synthesized by reacting Na9H[A-β-SiW9O34]·23H2O with FeCl3·6H2O at pH 3, and ...
Satoshi Matsunaga, Eriko Miyamae, Yusuke Inoue, Kenji Nomiya   +3 more
doaj   +1 more source

The Gaia-ESO Public Spectroscopic Survey: Implementation, data products, open cluster survey, science, and legacy [PDF]

, 2022
S. Randich, G. Gilmore, L. Magrini, G. G. Sacco, R. J. Jackson, R. D. Jeffries, C. C. Worley, A. Hourihane, A. Gonneau, C. Viscasillas Vázquez, E. Franciosini, James R. Lewis, E. J. Alfaro, C. Allende Prieto, T. Bensby, R. Blomme, A. Bragaglia, E. Flaccomio, P. François, M. Irwin, S. E. Koposov, A. J. Korn, A. C. Lanzafame, E. Pancino, A. Recio–Blanco, R. Smiljanić, S. Van Eck, T. Zwitter, M. Asplund, P. Bonifacio, S. Feltzing, James Binney, J. E. Drew, A. M. N. Ferguson, G. Micela, I. Negueruela, T. Prusti, Hans‐Walter Rix, A. Vallenari, A. Bayo, M. Bergemann, K. Biazzo, G. Carraro, Andrew R. Casey, F. Damiani, A. Frasca, U. Heiter, V. Hill, P. Jofré, P. de Laverny, K. Lind, G. Marconi, Christophe Martayan, T. Masseron, L. Monaco, L. Morbidelli, L. Prisinzano, L. Sbordone, S. G. Sousa, S. Zaggia, V. Adibekyan, R. Bonito, E. Caffau, S. Daflon, Diane Feuillet, M. Gebran, J. I. Gónzalez Hernández, G. Guiglion, A. Herrero, A. Lobel, J. Maíz Apellániz, T. Merle, Š. Mikolaitis, D. Montes, T. Morel, C. Soubiran, L. Spina, H. M. Tabernero, G. Tautvaišienė, G. Traven, M. Valentini, M. Van der Swaelmen, S. Villanova, N. J. Wright, U. Abbas, V. Silva Aguirre, J. Alves, L. Balaguer-Núñez, P. S. Barklem, D. Barrado, S. R. Berlanas, A. S. Binks, A. Bressan, R. Capuzzo‐Dolcetta, L. Casagrande, L. Casamiquela, R. S. Collins, V. D’Orazi, M. L. L. Dantas, Victor P. Debattista   +99 more
openalex   +1 more source

Basic Kinematics of the Galactic Disk from Open Cluster Data

Open Astronomy, 2016
The kinematic parameters of the Galactic disk are redetermined based on open-cluster data. It is shown that the Bottlinger-Oort model of pure circular rotation can be confidently used to describe the observed motions of disk objects at least out to ...
Loktin A. V., Popova M. E.
doaj   +1 more source

Possible Self-Organised Criticality and Dynamical Clustering of Traffic flow in Open Systems [PDF]

, 1999
María Elena Lárraga, J. A. del Rı́o, Anita Mehta   +2 more
openalex   +1 more source

THE PECULIARITIES IN O-TYPE GALAXY CLUSTERS

Odessa Astronomical Publications, 2017
We present the results of analysis of 2D distribution of galaxies in galaxy cluster fields. The Catalogue of Galaxy Clusters and Groups PF (Panko & Flin) was used as input observational data set.
E. A. Panko, S. I. Emelyanov
doaj   +1 more source

Open clusters in AurOB2

, 2016
We study the area around the HII region Sh 2-234, including the young open cluster Stock 8, to investigate the extent and definition of the association Aur OB2 and the possible role of triggering in massive cluster formation. We obtained Str mgren and J,H,Ks photometry for Stock 8 and Str mgren photometry for two other cluster candidates in the area,
Marco, A., Negueruela, I.
openaire   +2 more sources

THE CHEMICAL HOMOGENEITY OF OPEN CLUSTERS [PDF]

The Astrophysical Journal, 2016
ABSTRACT Determining the level of chemical homogeneity in open clusters is of fundamental importance in the study of the evolution of star-forming clouds and that of the Galactic disk. Yet limiting the initial abundance spread in clusters has been hampered by difficulties in obtaining consistent spectroscopic abundances for different ...
openaire   +2 more sources