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Título: | Phase-space structures and stellar populations in the star-forming region NGC 2264 |
Autor: | González García, Marta CSIC; Alfaro, Emilio J. CSIC ORCID CVN | Palabras clave: | Methods: data analysis Methods: statistical Stars: kinematics and dynamics Galaxy: kinematics and dynamics Open clusters and associations: general Open clusters and associations: individual: NGC 2264 |
Fecha de publicación: | 4-nov-2016 | Editor: | Oxford University Press | Citación: | Monthly Notices of the Royal Astronomical Society 465(2): 1889–1897 ( (2017) | Resumen: | In this work, we analyse the structure of a subspace of the phase space of the star-forming region NGC 2264 using the spectrum of kinematic groupings (SKG). We show that the SKG can be used to process a collection of star data to find substructure at different scales. We have found structure associated with the NGC 2264 region and also with the background area. In the NGC 2264 region, a hierarchical analysis shows substructure compatible with that found in previous specific studies of the area but with an objective, compact methodology that allows us to homogeneously compare the structure of different clusters and star-forming regions. Moreover, this structure is compatible with the different ages of the main NGC 2264 star-forming populations. The structure found in the field can be roughly associated with giant stars far in the background, dynamically decoupled from NGC 2264, which could be related either with the Outer Arm or Monoceros Ring. The results in this paper confirm the relationship between structure in the radial velocity phase-space subspace and different kinds of populations, defined by other variables not necessarily analysed with the SKG, such as age or distance, showing the importance of detecting phase-space substructure in order to trace stellar populations in the broadest sense of the word | Versión del editor: | http://dx.doi.org/10.1093/mnras/stw2855 | URI: | http://hdl.handle.net/10261/147767 | DOI: | 10.1093/mnras/stw2855 | ISSN: | 0035-8711 | E-ISSN: | 1365-2966 |
Aparece en las colecciones: | (IAA) Artículos |
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