The Gaia-ESO survey: Dynamical analysis of the L1688 region in Ophiuchus

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dc.contributor.authorRigliaco, E.
dc.contributor.authorWilking, B.
dc.contributor.authorMeyer, M.R.
dc.contributor.authorJeffries, R.D.
dc.contributor.authorCottaar, M.
dc.contributor.authorFrasca, A.
dc.contributor.authorWright, N.J.
dc.contributor.authorBayo, A.
dc.contributor.authorBonito, R.
dc.contributor.authorDamiani, F.
dc.contributor.authorJackson, R.J.
dc.contributor.authorJiménez-Esteban, F.
dc.contributor.authorKalari, V.M.
dc.contributor.authorKlutsch, A.
dc.contributor.authorLanzafame, A.C.
dc.contributor.authorSacco, G.
dc.contributor.authorGilmore, G.
dc.contributor.authorRandich, S.
dc.contributor.authorAlfaro, E.J.
dc.contributor.authorBragaglia, A.
dc.contributor.authorCostado, M.T.
dc.contributor.authorFranciosini, E.
dc.contributor.authorLardo, C.
dc.contributor.authorMonaco, L.
dc.contributor.authorMorbidelli, L.
dc.contributor.authorPrisinzano, L.
dc.contributor.authorSousa, S.G.
dc.contributor.authorZaggia, S.
dc.date.accessioned2023-11-09T20:06:09Z
dc.date.available2023-11-09T20:06:09Z
dc.date.issued2016-04
dc.descriptionIndexación: Scopus.es
dc.description.abstractThe Gaia ESO Public Spectroscopic Survey (GES) is providing the astronomical community with high-precision measurements of many stellar parameters including radial velocities (RVs) of stars belonging to several young clusters and star-forming regions. One of the main goals of the young cluster observations is to study their dynamical evolution and provide insight into their future, revealing whether they will eventually disperse to populate the field rather than evolve into bound open clusters. In this paper we report the analysis of the dynamical state of L1688 in the ρ Ophiuchi molecular cloud using the dataset provided by the GES consortium. We performed the membership selection of the more than 300 objects observed. Using the presence of the lithium absorption and the location in the Hertzspung-Russell diagram, we identify 45 already known members and two new association members. We provide accurate RVs for all 47 confirmed members. A dynamical analysis, after accounting for unresolved binaries and errors, shows that the stellar surface population of L1688 has a velocity dispersion σ ∼ 1.14 ± 0.35 km s−1 that is consistent with being in virial equilibrium and is bound with a ∼80% probability. We also find a velocity gradient in the stellar surface population of ∼1.0 km s−1 pc−1 in the northwest-southeast direction, which is consistent with that found for the pre-stellar dense cores, and we discuss the possibility of sequential and triggered star formation in L1688.es
dc.description.urihttps://www.aanda.org/articles/aa/full_html/2016/04/aa27253-15/aa27253-15.html
dc.identifier.citationAstronomy and Astrophysics. Volume 588. 1 April 2016. Article number A123es
dc.identifier.doi10.1051/0004-6361/201527253
dc.identifier.issn0004-6361
dc.identifier.urihttps://repositorio.unab.cl/xmlui/handle/ria/53882
dc.language.isoenes
dc.publisherEDP Scienceses
dc.subjectStars: Pre-main Sequencees
dc.subjectOpen Clusters and Associations: Individual: L1688es
dc.subjectStars: Kinematics and Dynamicses
dc.subjectStars: Formationes
dc.titleThe Gaia-ESO survey: Dynamical analysis of the L1688 region in Ophiuchuses
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