Results 21 to 30 of about 7,252,313 (352)

Exploring open cluster properties with Gaia and LAMOST [PDF]

Astronomy & Astrophysics, 2020
Context. In Gaia DR2, an unprecedented high level of precision has been reached at sub-milliarcsecond for astrometry and millimagnitudes for photometry.
J. Zhong, Li Chen, Di Wu, Lu Li, Leya Bai, J. Hou   +5 more
semanticscholar   +1 more source

A Gaia DR2 view of the open cluster population in the Milky Way [PDF]

Astronomy & Astrophysics, 2018
Context. Open clusters are convenient probes of the structure and history of the Galactic disk. They are also fundamental to stellar evolution studies.
T. Cantat-Gaudin, C. Jordi, A. Vallenari, A. Bragaglia, L. Balaguer-N'unez, C. Soubiran, D. Bossini, A. Moitinho, A. Castro-Ginard, A. Krone-Martins, L. Casamiquela, R. Sordo, R. Carrera   +12 more
semanticscholar   +1 more source

The GALAH survey: verifying abundance trends in the open cluster M67 using non-LTE modelling [PDF]

Monthly notices of the Royal Astronomical Society, 2018
Open cluster members are coeval and share the same initial bulk chemical composition. Consequently, differences in surface abundances between members of a cluster that are at different evolutionary stages can be used to study the effects of mixing and ...
Xudong Gao, K. Lind, A. Amarsi, S. Buder, A. Dotter, T. Nordlander, M. Asplund, J. Bland-Hawthorn, G. D. De Silva, V. D’Orazi, K. Freeman, J. Kos, G. Lewis, Jane Lin, S. Martell, K. Schlesinger, Sanjib Sharma, J. Simpson, D. Zucker, T. Zwitter, G. D. Da Costa, B. Anguiano, J. Horner, E. Hyde, P. Kafle, D. Nataf, W. Reid, D. Stello, Y. Ting   +28 more
semanticscholar   +1 more source

The Open Cluster Chemical Abundances and Mapping Survey. II. Precision Cluster Abundances for APOGEE Using SDSS DR14 [PDF]

Astronomical Journal, 2018
The Open Cluster Chemical Abundances and Mapping (OCCAM) survey aims to produce a comprehensive, uniform, infrared-based spectroscopic data set for hundreds of open clusters, and to constrain key Galactic dynamical and chemical parameters from this ...
J. Donor, P. Frinchaboy, K. Cunha, B. Thompson, J. O’Connell, G. Zasowski, K. Jackson, B. McGrath, B. McGrath, Andres Almeida, D. Bizyaev, D. Bizyaev, R. Carrera, D. A. García-Hernández, C. Nitschelm, K. Pan, O. Zamora   +16 more
semanticscholar   +1 more source

Improving the open cluster census [PDF]

Astronomy & Astrophysics
Context. The census of open clusters has exploded in size thanks to data from the Gaia satellite. However, it is likely that many of these reported clusters are not gravitationally bound, making the open cluster census impractical for many scientific ...
E. L. Hunt, S. Reffert
semanticscholar   +1 more source

Hunting for Neighboring Open Clusters with Gaia DR3: 101 New Open Clusters within 500 pc

The Astrophysical Journal Supplement Series, 2023
We systematically searched for open clusters in the solar neighborhood within 500 pc using the pyUPMASK and HDBSCAN clustering algorithms based on Gaia DR3.
Songmei Qin, Jing Zhong, Tong Tang, Li Chen   +3 more
doaj   +1 more source

Some two-dimensional finite energy percolation processes [PDF]

, 2009
Some examples of translation invariant site percolation processes on the $\Z^2$ lattice are constructed, the most far-reaching example being one that satisfies uniform finite energy (meaning that the probability that a site is open given the status of ...
Hägström, Olle, Mester, Péter
core   +2 more sources

The young open cluster Berkeley 55 [PDF]

, 2011
We present UBV photometry of the highly reddened and poorly studied open cluster Berkeley 55, revealing an important population of B-type stars and several evolved stars of high luminosity.
Amparo Marco, Andrillat, Andrillat, Arellano Ferro, Caron, Draper, Díaz, Fitzgerald, Ginestet, González, Hassan, Howarth, Ignacio Negueruela, Jeffries, Koornneef, Levesque, Mermilliod, Mermilliod, Meynet, Mowlavi, Poelarends, Salasnich, Schmidt-Kaler, Shortridge, Skrutskie, Straižys, Turner, Valdes, Wegner, Weidemann, Winkler, Zhou   +31 more
core   +3 more sources

Star cluster ecology IVa: Dissection of an open star cluster---photometry [PDF]

, 2000
The evolution of star clusters is studied using N-body simulations in which the evolution of single stars and binaries are taken self-consistently into account.
Hut, Piet, Makino, Junichiro, McMillan, Stephen L. W., Zwart, Simon F. Portegies   +3 more
core   +3 more sources

Star clusters in the Sh2-132 complex: clues about the connection between embedded and open clusters [PDF]

, 2010
Embedded clusters are formed in molecular clouds where massive stars can produce HII regions. The detailed embedded-open cluster evolutionary connection as well as the origin of associations are yet to be unveiled.
Abt, Bastian, Battinelli, Bessel, Bica, Bonatto, Bonatto, Bonatto, Bonatto, Bonatto, C. Bonatto, Cappa, Carvalho, Converse, De Wit, De Wit, Dutra, E. Bica, Elmegreen, Elson, Fellhauer, Foster, Furlan, Goodwin, Gvaramadze, Hamann, Harten, King, Kronberger, Lada, Luhman, Luhman, Lynds, Marigo, Meyer, Moeckel, Momany, Parker, Pflamm-Altenburg, Platais, Puga, Schlegel, Sharpless, Siess, Smith, T. A. Saurin, Tutukov, Van Der Hucht, Wilson, Yilmaz   +49 more
core   +2 more sources