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Extremely precise age and metallicity of the open cluster NGC 2506 using detached eclipsing binaries

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Extremely precise age and metallicity of the open cluster NGC 2506 using detached eclipsing binaries. / Knudstrup, E.; Grundahl, F.; Brogaard, K.; Slumstrup, D.; Orosz, J. A.; Sandquist, E. L.; Jessen-Hansen, J.; Lund, M. N.; Arentoft, T.; Tronsgaard, R.; Yong, D.; Frandsen, S.; Bruntt, H.

I: Monthly Notices of the Royal Astronomical Society, Bind 499, Nr. 1, 11.2020, s. 1312-1339.

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

Harvard

Knudstrup, E, Grundahl, F, Brogaard, K, Slumstrup, D, Orosz, JA, Sandquist, EL, Jessen-Hansen, J, Lund, MN, Arentoft, T, Tronsgaard, R, Yong, D, Frandsen, S & Bruntt, H 2020, 'Extremely precise age and metallicity of the open cluster NGC 2506 using detached eclipsing binaries', Monthly Notices of the Royal Astronomical Society, bind 499, nr. 1, s. 1312-1339. https://doi.org/10.1093/mnras/staa2855

APA

Knudstrup, E., Grundahl, F., Brogaard, K., Slumstrup, D., Orosz, J. A., Sandquist, E. L., Jessen-Hansen, J., Lund, M. N., Arentoft, T., Tronsgaard, R., Yong, D., Frandsen, S., & Bruntt, H. (2020). Extremely precise age and metallicity of the open cluster NGC 2506 using detached eclipsing binaries. Monthly Notices of the Royal Astronomical Society, 499(1), 1312-1339. https://doi.org/10.1093/mnras/staa2855

CBE

Knudstrup E, Grundahl F, Brogaard K, Slumstrup D, Orosz JA, Sandquist EL, Jessen-Hansen J, Lund MN, Arentoft T, Tronsgaard R, Yong D, Frandsen S, Bruntt H. 2020. Extremely precise age and metallicity of the open cluster NGC 2506 using detached eclipsing binaries. Monthly Notices of the Royal Astronomical Society. 499(1):1312-1339. https://doi.org/10.1093/mnras/staa2855

MLA

Vancouver

Knudstrup E, Grundahl F, Brogaard K, Slumstrup D, Orosz JA, Sandquist EL o.a. Extremely precise age and metallicity of the open cluster NGC 2506 using detached eclipsing binaries. Monthly Notices of the Royal Astronomical Society. 2020 nov;499(1):1312-1339. https://doi.org/10.1093/mnras/staa2855

Author

Knudstrup, E. ; Grundahl, F. ; Brogaard, K. ; Slumstrup, D. ; Orosz, J. A. ; Sandquist, E. L. ; Jessen-Hansen, J. ; Lund, M. N. ; Arentoft, T. ; Tronsgaard, R. ; Yong, D. ; Frandsen, S. ; Bruntt, H. / Extremely precise age and metallicity of the open cluster NGC 2506 using detached eclipsing binaries. I: Monthly Notices of the Royal Astronomical Society. 2020 ; Bind 499, Nr. 1. s. 1312-1339.

Bibtex

@article{fa1d0571b2d3436a909ce0898097af44,
title = "Extremely precise age and metallicity of the open cluster NGC 2506 using detached eclipsing binaries",
abstract = "Accurate stellar parameters of stars in open clusters can help constrain models of stellar structure and evolution. Here, we wish to determine the age and metallicity content of the open cluster NGC 2506. To this end, we investigated three detached eclipsing binaries (DEBs; V2032, V4, and V5) for which we determined their masses and radii, as well as four red giant branch stars for which we determined their effective temperatures, surface gravities, and metallicities. Three of the stars in the DEBs have masses close to the cluster turn-off mass, allowing for extremely precise age determination. Comparing the values for the masses and radii of the binaries to BaSTI (a Bag of Stellar Tracks and Isochrones) isochrones, we estimated a cluster age of 2.01 ± 0.10 Gyr. This does depend on the models used in the comparison, where we have found that the inclusion of convective core-overshooting is necessary to properly model the cluster. From red giant branch stars, we determined values for the effective temperatures, the surface gravities, and the metallicities. From these we find a cluster metallicity of -0.36 ± 0.10 dex. Using this value and the values for the effective temperatures, we determine the reddening to be E(b - y) = 0.057 ± 0.004 mag. Furthermore, we derived the distance to the cluster from Gaia parallaxes and found 3.101 ± 0.017 kpc, and we have performed a radial velocity membership determination for stars in the field of the cluster. Finally, we report on the detection of oscillation signals in γ Dor and δ Scuti members in data from the Transiting Exoplanet Survey Satellite (TESS) mission, including the possible detection of solar-like oscillations in two of the red giants.",
keywords = "binaries: eclipsing, binaries: spectroscopic, stars: oscillations, Galaxy: open clusters and associations: individual",
author = "E. Knudstrup and F. Grundahl and K. Brogaard and D. Slumstrup and Orosz, {J. A.} and Sandquist, {E. L.} and J. Jessen-Hansen and Lund, {M. N.} and T. Arentoft and R. Tronsgaard and D. Yong and S. Frandsen and H. Bruntt",
year = "2020",
month = nov,
doi = "10.1093/mnras/staa2855",
language = "English",
volume = "499",
pages = "1312--1339",
journal = "Royal Astronomical Society. Monthly Notices",
issn = "0035-8711",
publisher = "Oxford University Press",
number = "1",

}

RIS

TY - JOUR

T1 - Extremely precise age and metallicity of the open cluster NGC 2506 using detached eclipsing binaries

AU - Knudstrup, E.

AU - Grundahl, F.

AU - Brogaard, K.

AU - Slumstrup, D.

AU - Orosz, J. A.

AU - Sandquist, E. L.

AU - Jessen-Hansen, J.

AU - Lund, M. N.

AU - Arentoft, T.

AU - Tronsgaard, R.

AU - Yong, D.

AU - Frandsen, S.

AU - Bruntt, H.

PY - 2020/11

Y1 - 2020/11

N2 - Accurate stellar parameters of stars in open clusters can help constrain models of stellar structure and evolution. Here, we wish to determine the age and metallicity content of the open cluster NGC 2506. To this end, we investigated three detached eclipsing binaries (DEBs; V2032, V4, and V5) for which we determined their masses and radii, as well as four red giant branch stars for which we determined their effective temperatures, surface gravities, and metallicities. Three of the stars in the DEBs have masses close to the cluster turn-off mass, allowing for extremely precise age determination. Comparing the values for the masses and radii of the binaries to BaSTI (a Bag of Stellar Tracks and Isochrones) isochrones, we estimated a cluster age of 2.01 ± 0.10 Gyr. This does depend on the models used in the comparison, where we have found that the inclusion of convective core-overshooting is necessary to properly model the cluster. From red giant branch stars, we determined values for the effective temperatures, the surface gravities, and the metallicities. From these we find a cluster metallicity of -0.36 ± 0.10 dex. Using this value and the values for the effective temperatures, we determine the reddening to be E(b - y) = 0.057 ± 0.004 mag. Furthermore, we derived the distance to the cluster from Gaia parallaxes and found 3.101 ± 0.017 kpc, and we have performed a radial velocity membership determination for stars in the field of the cluster. Finally, we report on the detection of oscillation signals in γ Dor and δ Scuti members in data from the Transiting Exoplanet Survey Satellite (TESS) mission, including the possible detection of solar-like oscillations in two of the red giants.

AB - Accurate stellar parameters of stars in open clusters can help constrain models of stellar structure and evolution. Here, we wish to determine the age and metallicity content of the open cluster NGC 2506. To this end, we investigated three detached eclipsing binaries (DEBs; V2032, V4, and V5) for which we determined their masses and radii, as well as four red giant branch stars for which we determined their effective temperatures, surface gravities, and metallicities. Three of the stars in the DEBs have masses close to the cluster turn-off mass, allowing for extremely precise age determination. Comparing the values for the masses and radii of the binaries to BaSTI (a Bag of Stellar Tracks and Isochrones) isochrones, we estimated a cluster age of 2.01 ± 0.10 Gyr. This does depend on the models used in the comparison, where we have found that the inclusion of convective core-overshooting is necessary to properly model the cluster. From red giant branch stars, we determined values for the effective temperatures, the surface gravities, and the metallicities. From these we find a cluster metallicity of -0.36 ± 0.10 dex. Using this value and the values for the effective temperatures, we determine the reddening to be E(b - y) = 0.057 ± 0.004 mag. Furthermore, we derived the distance to the cluster from Gaia parallaxes and found 3.101 ± 0.017 kpc, and we have performed a radial velocity membership determination for stars in the field of the cluster. Finally, we report on the detection of oscillation signals in γ Dor and δ Scuti members in data from the Transiting Exoplanet Survey Satellite (TESS) mission, including the possible detection of solar-like oscillations in two of the red giants.

KW - binaries: eclipsing

KW - binaries: spectroscopic

KW - stars: oscillations

KW - Galaxy: open clusters and associations: individual

U2 - 10.1093/mnras/staa2855

DO - 10.1093/mnras/staa2855

M3 - Journal article

VL - 499

SP - 1312

EP - 1339

JO - Royal Astronomical Society. Monthly Notices

JF - Royal Astronomical Society. Monthly Notices

SN - 0035-8711

IS - 1

ER -