The Gaia-ESO Survey: Stellar content and elemental abundances in the massive cluster NGC 6705

T. Cantat-Gaudin; A. Vallenari; S. Zaggia; A. Bragaglia; R. Sordo; J. E. Drew; J. Eisloeffel; H. J. Farnhill; E. Gonzalez-Solares; R. Greimel; M. J. Irwin; A. Kupcu-Yoldas; C. Jordi; R. Blomme; L. Sampedro; M. T. Costado; E. Alfaro; R. Smiljanic; L. Magrini; P. Donati; E. D. Friel; H. Jacobson; U. Abbas; D. Hatzidimitriou; A. Spagna; A. Vecchiato; L. Balaguer-Nunez; C. Lardo; M. Tosi; E. Pancino; A. Klutsch; G. Tautvaisiene; A. Drazdauskas; E. Puzeras; F. Jimenez-Esteban; E. Maiorca; D. Geisler; I. San Roman; S. Villanova; G. Gilmore; S. Randich; Thomas Bensby; E. Flaccomio; A. Lanzafame; A. Recio-Blanco; F. Damiani; A. Hourihane; P. Jofre; P. de Laverny; T. Masseron; L. Morbidelli; L. Prisinzano; G. G. Sacco; L. Sbordone; C. C. Worley

doi:10.1051/0004-6361/201423851

The Gaia-ESO Survey: Stellar content and elemental abundances in the massive cluster NGC 6705

T. Cantat-Gaudin, A. Vallenari, S. Zaggia, A. Bragaglia, R. Sordo, J. E. Drew, J. Eisloeffel, H. J. Farnhill, E. Gonzalez-Solares, R. Greimel, M. J. Irwin, A. Kupcu-Yoldas, C. Jordi, R. Blomme, L. Sampedro, M. T. Costado, E. Alfaro, R. Smiljanic, L. Magrini, P. DonatiE. D. Friel, H. Jacobson, U. Abbas, D. Hatzidimitriou, A. Spagna, A. Vecchiato, L. Balaguer-Nunez, C. Lardo, M. Tosi, E. Pancino, A. Klutsch, G. Tautvaisiene, A. Drazdauskas, E. Puzeras, F. Jimenez-Esteban, E. Maiorca, D. Geisler, I. San Roman, S. Villanova, G. Gilmore, S. Randich, Thomas Bensby, E. Flaccomio, A. Lanzafame, A. Recio-Blanco, F. Damiani, A. Hourihane, P. Jofre, P. de Laverny, T. Masseron, L. Morbidelli, L. Prisinzano, G. G. Sacco, L. Sbordone, C. C. Worley

Research output: Contribution to journal › Article › peer-review

Abstract

Context. Chemically inhomogeneous populations are observed in most globular clusters, but not in open clusters. Cluster mass seems to play a key role in the existence of multiple populations. Aims. Studying the chemical homogeneity of the most massive open clusters is needed to better understand the mechanism of their formation and determine the mass limit under which clusters cannot host multiple populations. Here we studied NGC 6705, which is a young and massive open cluster located towards the inner region of the Milky Way. This cluster is located inside the solar circle. This makes it an important tracer of the inner disk abundance gradient. Methods. This study makes use of BVI and ri photometry and comparisons with theoretical isochrones to derive the age of NGC 6705. We study the density profile of the cluster and the mass function to infer the cluster mass. Based on abundances of the chemical elements distributed in the first internal data release of the Gaia-ESO Survey, we study elemental ratios and the chemical homogeneity of the red clump stars. Radial velocities enable us to study the rotation and internal kinematics of the cluster. Results. The estimated ages range from 250 to 316 Myr, depending on the adopted stellar model. Luminosity profiles and mass functions show strong signs of mass segregation. We derive the mass of the cluster from its luminosity function and from the kinematics, finding values between 3700 M-circle dot and 11 000 M-circle dot. After selecting the cluster members from their radial velocities, we obtain a metallicity of [Fe/H] = 0.10 +/- 0.06 based on 21 candidate members. Moreover, NGC 6705 shows no sign of the typical correlations or anti-correlations between Al, Mg, Si, and Na, which are expected in multiple populations. This is consistent with our cluster mass estimate, which is lower than the required mass limit proposed in the literature to develop multiple populations.

Original language	English
Article number	A17
Journal	Astronomy & Astrophysics
Volume	569
DOIs	https://doi.org/10.1051/0004-6361/201423851
Publication status	Published - 2014

Subject classification (UKÄ)

Astronomy, Astrophysics and Cosmology

Free keywords

stars: abundances
open clusters and associations: general
open
clusters and associations: individual: NGC 6705

Access to Document

10.1051/0004-6361/201423851

Gaia-ESO Survey
Gilmore, G. (PI), Randich, S. (PI), Feltzing, S. (CoI), Bensby, T. (CoI), Howes, L. (Researcher), Gruyters, P. (Researcher), Ryde, N. (CoI), Stonkute, E. (Researcher) & Ruchti, G. (Researcher)
2012/12/24 → 2022/07/01
Project: Research

Cite this

Cantat-Gaudin, T., Vallenari, A., Zaggia, S., Bragaglia, A., Sordo, R., Drew, J. E., Eisloeffel, J., Farnhill, H. J., Gonzalez-Solares, E., Greimel, R., Irwin, M. J., Kupcu-Yoldas, A., Jordi, C., Blomme, R., Sampedro, L., Costado, M. T., Alfaro, E., Smiljanic, R., Magrini, L., ... Worley, C. C. (2014). The Gaia-ESO Survey: Stellar content and elemental abundances in the massive cluster NGC 6705. Astronomy & Astrophysics, 569, Article A17. https://doi.org/10.1051/0004-6361/201423851

@article{00fbb7a571c440cfb9ff52cda4e9f509,

title = "The Gaia-ESO Survey: Stellar content and elemental abundances in the massive cluster NGC 6705",

abstract = "Context. Chemically inhomogeneous populations are observed in most globular clusters, but not in open clusters. Cluster mass seems to play a key role in the existence of multiple populations. Aims. Studying the chemical homogeneity of the most massive open clusters is needed to better understand the mechanism of their formation and determine the mass limit under which clusters cannot host multiple populations. Here we studied NGC 6705, which is a young and massive open cluster located towards the inner region of the Milky Way. This cluster is located inside the solar circle. This makes it an important tracer of the inner disk abundance gradient. Methods. This study makes use of BVI and ri photometry and comparisons with theoretical isochrones to derive the age of NGC 6705. We study the density profile of the cluster and the mass function to infer the cluster mass. Based on abundances of the chemical elements distributed in the first internal data release of the Gaia-ESO Survey, we study elemental ratios and the chemical homogeneity of the red clump stars. Radial velocities enable us to study the rotation and internal kinematics of the cluster. Results. The estimated ages range from 250 to 316 Myr, depending on the adopted stellar model. Luminosity profiles and mass functions show strong signs of mass segregation. We derive the mass of the cluster from its luminosity function and from the kinematics, finding values between 3700 M-circle dot and 11 000 M-circle dot. After selecting the cluster members from their radial velocities, we obtain a metallicity of [Fe/H] = 0.10 +/- 0.06 based on 21 candidate members. Moreover, NGC 6705 shows no sign of the typical correlations or anti-correlations between Al, Mg, Si, and Na, which are expected in multiple populations. This is consistent with our cluster mass estimate, which is lower than the required mass limit proposed in the literature to develop multiple populations.",

keywords = "stars: abundances, open clusters and associations: general, open, clusters and associations: individual: NGC 6705",

author = "T. Cantat-Gaudin and A. Vallenari and S. Zaggia and A. Bragaglia and R. Sordo and Drew, {J. E.} and J. Eisloeffel and Farnhill, {H. J.} and E. Gonzalez-Solares and R. Greimel and Irwin, {M. J.} and A. Kupcu-Yoldas and C. Jordi and R. Blomme and L. Sampedro and Costado, {M. T.} and E. Alfaro and R. Smiljanic and L. Magrini and P. Donati and Friel, {E. D.} and H. Jacobson and U. Abbas and D. Hatzidimitriou and A. Spagna and A. Vecchiato and L. Balaguer-Nunez and C. Lardo and M. Tosi and E. Pancino and A. Klutsch and G. Tautvaisiene and A. Drazdauskas and E. Puzeras and F. Jimenez-Esteban and E. Maiorca and D. Geisler and Roman, {I. San} and S. Villanova and G. Gilmore and S. Randich and Thomas Bensby and E. Flaccomio and A. Lanzafame and A. Recio-Blanco and F. Damiani and A. Hourihane and P. Jofre and {de Laverny}, P. and T. Masseron and L. Morbidelli and L. Prisinzano and Sacco, {G. G.} and L. Sbordone and Worley, {C. C.}",

year = "2014",

doi = "10.1051/0004-6361/201423851",

language = "English",

volume = "569",

journal = "Astronomy & Astrophysics",

issn = "0004-6361",

publisher = "EDP Sciences",

}

Cantat-Gaudin, T, Vallenari, A, Zaggia, S, Bragaglia, A, Sordo, R, Drew, JE, Eisloeffel, J, Farnhill, HJ, Gonzalez-Solares, E, Greimel, R, Irwin, MJ, Kupcu-Yoldas, A, Jordi, C, Blomme, R, Sampedro, L, Costado, MT, Alfaro, E, Smiljanic, R, Magrini, L, Donati, P, Friel, ED, Jacobson, H, Abbas, U, Hatzidimitriou, D, Spagna, A, Vecchiato, A, Balaguer-Nunez, L, Lardo, C, Tosi, M, Pancino, E, Klutsch, A, Tautvaisiene, G, Drazdauskas, A, Puzeras, E, Jimenez-Esteban, F, Maiorca, E, Geisler, D, Roman, IS, Villanova, S, Gilmore, G, Randich, S, Bensby, T, Flaccomio, E, Lanzafame, A, Recio-Blanco, A, Damiani, F, Hourihane, A, Jofre, P, de Laverny, P, Masseron, T, Morbidelli, L, Prisinzano, L, Sacco, GG, Sbordone, L & Worley, CC 2014, 'The Gaia-ESO Survey: Stellar content and elemental abundances in the massive cluster NGC 6705', Astronomy & Astrophysics, vol. 569, A17. https://doi.org/10.1051/0004-6361/201423851

TY - JOUR

T1 - The Gaia-ESO Survey: Stellar content and elemental abundances in the massive cluster NGC 6705

AU - Cantat-Gaudin, T.

AU - Vallenari, A.

AU - Zaggia, S.

AU - Bragaglia, A.

AU - Sordo, R.

AU - Drew, J. E.

AU - Eisloeffel, J.

AU - Farnhill, H. J.

AU - Gonzalez-Solares, E.

AU - Greimel, R.

AU - Irwin, M. J.

AU - Kupcu-Yoldas, A.

AU - Jordi, C.

AU - Blomme, R.

AU - Sampedro, L.

AU - Costado, M. T.

AU - Alfaro, E.

AU - Smiljanic, R.

AU - Magrini, L.

AU - Donati, P.

AU - Friel, E. D.

AU - Jacobson, H.

AU - Abbas, U.

AU - Hatzidimitriou, D.

AU - Spagna, A.

AU - Vecchiato, A.

AU - Balaguer-Nunez, L.

AU - Lardo, C.

AU - Tosi, M.

AU - Pancino, E.

AU - Klutsch, A.

AU - Tautvaisiene, G.

AU - Drazdauskas, A.

AU - Puzeras, E.

AU - Jimenez-Esteban, F.

AU - Maiorca, E.

AU - Geisler, D.

AU - Roman, I. San

AU - Villanova, S.

AU - Gilmore, G.

AU - Randich, S.

AU - Bensby, Thomas

AU - Flaccomio, E.

AU - Lanzafame, A.

AU - Recio-Blanco, A.

AU - Damiani, F.

AU - Hourihane, A.

AU - Jofre, P.

AU - de Laverny, P.

AU - Masseron, T.

AU - Morbidelli, L.

AU - Prisinzano, L.

AU - Sacco, G. G.

AU - Sbordone, L.

AU - Worley, C. C.

PY - 2014

Y1 - 2014

N2 - Context. Chemically inhomogeneous populations are observed in most globular clusters, but not in open clusters. Cluster mass seems to play a key role in the existence of multiple populations. Aims. Studying the chemical homogeneity of the most massive open clusters is needed to better understand the mechanism of their formation and determine the mass limit under which clusters cannot host multiple populations. Here we studied NGC 6705, which is a young and massive open cluster located towards the inner region of the Milky Way. This cluster is located inside the solar circle. This makes it an important tracer of the inner disk abundance gradient. Methods. This study makes use of BVI and ri photometry and comparisons with theoretical isochrones to derive the age of NGC 6705. We study the density profile of the cluster and the mass function to infer the cluster mass. Based on abundances of the chemical elements distributed in the first internal data release of the Gaia-ESO Survey, we study elemental ratios and the chemical homogeneity of the red clump stars. Radial velocities enable us to study the rotation and internal kinematics of the cluster. Results. The estimated ages range from 250 to 316 Myr, depending on the adopted stellar model. Luminosity profiles and mass functions show strong signs of mass segregation. We derive the mass of the cluster from its luminosity function and from the kinematics, finding values between 3700 M-circle dot and 11 000 M-circle dot. After selecting the cluster members from their radial velocities, we obtain a metallicity of [Fe/H] = 0.10 +/- 0.06 based on 21 candidate members. Moreover, NGC 6705 shows no sign of the typical correlations or anti-correlations between Al, Mg, Si, and Na, which are expected in multiple populations. This is consistent with our cluster mass estimate, which is lower than the required mass limit proposed in the literature to develop multiple populations.

AB - Context. Chemically inhomogeneous populations are observed in most globular clusters, but not in open clusters. Cluster mass seems to play a key role in the existence of multiple populations. Aims. Studying the chemical homogeneity of the most massive open clusters is needed to better understand the mechanism of their formation and determine the mass limit under which clusters cannot host multiple populations. Here we studied NGC 6705, which is a young and massive open cluster located towards the inner region of the Milky Way. This cluster is located inside the solar circle. This makes it an important tracer of the inner disk abundance gradient. Methods. This study makes use of BVI and ri photometry and comparisons with theoretical isochrones to derive the age of NGC 6705. We study the density profile of the cluster and the mass function to infer the cluster mass. Based on abundances of the chemical elements distributed in the first internal data release of the Gaia-ESO Survey, we study elemental ratios and the chemical homogeneity of the red clump stars. Radial velocities enable us to study the rotation and internal kinematics of the cluster. Results. The estimated ages range from 250 to 316 Myr, depending on the adopted stellar model. Luminosity profiles and mass functions show strong signs of mass segregation. We derive the mass of the cluster from its luminosity function and from the kinematics, finding values between 3700 M-circle dot and 11 000 M-circle dot. After selecting the cluster members from their radial velocities, we obtain a metallicity of [Fe/H] = 0.10 +/- 0.06 based on 21 candidate members. Moreover, NGC 6705 shows no sign of the typical correlations or anti-correlations between Al, Mg, Si, and Na, which are expected in multiple populations. This is consistent with our cluster mass estimate, which is lower than the required mass limit proposed in the literature to develop multiple populations.

KW - stars: abundances

KW - open clusters and associations: general

KW - open

KW - clusters and associations: individual: NGC 6705

U2 - 10.1051/0004-6361/201423851

DO - 10.1051/0004-6361/201423851

M3 - Article

SN - 0004-6361

VL - 569

JO - Astronomy & Astrophysics

JF - Astronomy & Astrophysics

M1 - A17

ER -

The Gaia-ESO Survey: Stellar content and elemental abundances in the massive cluster NGC 6705

Abstract

Subject classification (UKÄ)

Free keywords

Access to Document

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Projects

Gaia-ESO Survey

Cite this