Results 71 to 80 of about 5,935,155 (266)

A Relation-Oriented Clustering Method for Open Relation Extraction [PDF]

, 2021
Jun Zhao, Tao Gui, Qi Zhang, Yaqian Zhou
openalex   +1 more source

DETECTION OF WHITE DWARF COMPANIONS TO BLUE STRAGGLERS IN THE OPEN CLUSTER NGC 188: DIRECT EVIDENCE FOR RECENT MASS TRANSFER [PDF]

, 2014
Several possible formation pathways for blue straggler stars have been developed recently, but no one pathway has yet been observationally confirmed for a specific blue straggler.
N. Gosnell, R. Mathieu, A. Geller, A. Sills, N. Leigh, C. Knigge   +5 more
semanticscholar   +1 more source

Evidence for a Catastrophically Disrupted Open Cluster

The Astrophysical Journal
Of the many discoveries uncovered by the Gaia astrometric mission, some of the most exciting are related to nearby dispersed stellar structures. We analyze one such structure in the Milky Way disk, OCSN-49, a coeval stellar stream with 257 identified ...
Alexis N. Miller, Kyle R. Tregoning, Jeff J. Andrews, Simon C. Schuler, Jason L. Curtis, Marcel A. Agüeros, Phillip A. Cargile, Julio Chanamé   +7 more
doaj   +1 more source

Gaia-ESO Survey: Properties of the intermediate age open cluster NGC 4815 [PDF]

, 2014
Context. NGC 4815 is a populous similar to 500 Myr open cluster at R-gc similar to 7 kpc observed in the first six months of the Gaia-ESO Survey. Located in the inner Galactic disk, NGC 4815 is an important potential tracer of the abundance gradient ...
E. Friel, P. Donati, A. Bragaglia, H. Jacobson, L. Magrini, L. Prisinzano, S. Randich, M. Tosi, T. Cantat-Gaudin, A. Vallenari, R. Smiljanic, G. Carraro, R. Sordo, E. Maiorca, G. Tautvaisviene, P. Sestito, S. Zaggia, F. Jiménez-Esteban, G. Gilmore, R. Jeffries, E. Alfaro, T. Bensby, Sergey E. Koposov, A. Korn, E. Pancino, A. Recio-Blanco, E. Franciosini, V. Hill, R. Jackson, P. Laverny, L. Morbidelli, G. Sacco, C. Worley, A. Hourihane, M. Costado, P. Jofré, K. Lind   +36 more
semanticscholar   +1 more source

Theia 456: Tidally Shredding an Open Cluster

The Astronomical Journal
The application of clustering algorithms to the Gaia astrometric catalog has revolutionized our census of stellar populations in the milky Way, including the discovery of many new dispersed structures. We focus on one such structure, Theia 456 (COIN-Gaia-
Kyle R. Tregoning, Jeff J. Andrews, Marcel A. Agüeros, Phillip A. Cargile, Julio Chanamé, Jason L. Curtis, Simon C. Schuler   +6 more
doaj   +1 more source

HOMOGENIZED EFFECTIVE TEMPERATURES FOR THE OPEN CLUSTER NGC 188

Odessa Astronomical Publications, 2013
No abstract.
V. Malyuto, S. Zubarev
doaj   +1 more source

A super lithium-rich red-clump star in the open cluster Trumpler 5 [PDF]

, 2014
Context. The existence of lithium-rich low-mass red giant stars still represents a challenge for stellar evolution models. Stellar clusters are privileged environments for this kind of investigation. Aims. To investigate the chemical abundance pattern of
L. Monaco, H. Boffin, P. Bonifacio, S. Villanova, G. Carraro, E. Caffau, M. Steffen, J. Ahumada, Y. Beletsky, G. Beccari   +9 more
semanticscholar   +1 more source

WIYN Open Cluster Study. XCVII. An Extended Radial-velocity Survey and Spectroscopic Binary Orbits in the Open Cluster NGC 188

The Astronomical Journal
We present 35 new spectroscopic-binary orbits from our extended radial-velocity (RV) survey of the old (6.4 ± 0.2 Gyr) open cluster NGC 188. Using data from the WIYN Open Cluster Study (WOCS) and APOGEE-2, this work nearly doubles the temporal baseline ...
Ritvik Sai Narayan, Evan Linck, Robert D. Mathieu, Aaron M. Geller   +3 more
doaj   +1 more source

SMEs’ Degree of Openness: The Case of Manufacturing Industries

Journal of Technology Management & Innovation, 2012
This paper clusters SMEs based on their degree of openness. In addition, it explores both the internal and external determinants of the different clusters obtained. Based on a survey of 1214 firms in manufacturing industries and using both the dimensions
Moulay Othman Idrissi Fakhreddine, Nabil Amaraa, Réjean Landrya   +2 more
doaj   +1 more source

WIYN OPEN CLUSTER STUDY. LIX. RADIAL VELOCITY MEMBERSHIP OF THE EVOLVED POPULATION OF THE OLD OPEN CLUSTER NGC 6791 [PDF]

, 2014
The open cluster NGC 6791 has been the focus of much recent study due to its intriguing combination of old age and high metallicity (∼8 Gyr, [Fe/H] = +0.30), as well as its location within the Kepler field.
B. Tofflemire, N. Gosnell, R. Mathieu, I. Platais   +3 more
semanticscholar   +1 more source