The old open cluster Trumpler 5: A reddened, metal-poor anticentre cluster

CCD observations in the Johnson V, Kron-Cousins I and the Washington system C and T1 passbands have been used to generate colour-magnitude diagrams (CMDs) reaching down to V ∼ 21.0 mag and T1 ∼ 19.0 for Trumpler 5, an old open cluster located towards the Galactic anticentre. Our data analysis confir...

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Detalles Bibliográficos
Publicado: 2004
Materias:
Open clusters and associations: general
Open clusters and associations: individual: Trumpler 5
Techniques: photometric
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00358711_v349_n2_p641_Piatti
http://hdl.handle.net/20.500.12110/paper_00358711_v349_n2_p641_Piatti
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00358711_v349_n2_p641_Piatti
record_format dspace
spelling paper:paper_00358711_v349_n2_p641_Piatti2023-06-08T15:01:19Z The old open cluster Trumpler 5: A reddened, metal-poor anticentre cluster Open clusters and associations: general Open clusters and associations: individual: Trumpler 5 Techniques: photometric CCD observations in the Johnson V, Kron-Cousins I and the Washington system C and T1 passbands have been used to generate colour-magnitude diagrams (CMDs) reaching down to V ∼ 21.0 mag and T1 ∼ 19.0 for Trumpler 5, an old open cluster located towards the Galactic anticentre. Our data analysis confirms the existence of non-uniform extinction over the face of the cluster, the mean E(V - I) and E(C - T1) values being 0.80 ± 0.05 and 1.17 ± 0.15, respectively. Through comparison of the cluster CMDs with theoretical isochrones of the Geneva group, Washington Standard Giant Branches and measures of δV and δT1 indices, we derive the following values for the cluster apparent distance modulus, age, and metallicity: V - Mv = 13.80 ± 0.30 (corresponding to a distance from the Sun of 2.4 ± 0.5 kpc and 0.04 kpc above the Galactic plane), t = 5.0 ± 0.5 Gyr and [Fe/H] = -0.30 ± 0.15. We estimate the cluster angular radius to be about 7.7 arcmin (= 5.4 pc) from star counts carried out within and outside the cluster field. 2004 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00358711_v349_n2_p641_Piatti http://hdl.handle.net/20.500.12110/paper_00358711_v349_n2_p641_Piatti
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Open clusters and associations: general
Open clusters and associations: individual: Trumpler 5
Techniques: photometric
spellingShingle Open clusters and associations: general
Open clusters and associations: individual: Trumpler 5
Techniques: photometric
The old open cluster Trumpler 5: A reddened, metal-poor anticentre cluster
topic_facet Open clusters and associations: general
Open clusters and associations: individual: Trumpler 5
Techniques: photometric
description CCD observations in the Johnson V, Kron-Cousins I and the Washington system C and T1 passbands have been used to generate colour-magnitude diagrams (CMDs) reaching down to V ∼ 21.0 mag and T1 ∼ 19.0 for Trumpler 5, an old open cluster located towards the Galactic anticentre. Our data analysis confirms the existence of non-uniform extinction over the face of the cluster, the mean E(V - I) and E(C - T1) values being 0.80 ± 0.05 and 1.17 ± 0.15, respectively. Through comparison of the cluster CMDs with theoretical isochrones of the Geneva group, Washington Standard Giant Branches and measures of δV and δT1 indices, we derive the following values for the cluster apparent distance modulus, age, and metallicity: V - Mv = 13.80 ± 0.30 (corresponding to a distance from the Sun of 2.4 ± 0.5 kpc and 0.04 kpc above the Galactic plane), t = 5.0 ± 0.5 Gyr and [Fe/H] = -0.30 ± 0.15. We estimate the cluster angular radius to be about 7.7 arcmin (= 5.4 pc) from star counts carried out within and outside the cluster field.
title The old open cluster Trumpler 5: A reddened, metal-poor anticentre cluster
title_short The old open cluster Trumpler 5: A reddened, metal-poor anticentre cluster
title_full The old open cluster Trumpler 5: A reddened, metal-poor anticentre cluster
title_fullStr The old open cluster Trumpler 5: A reddened, metal-poor anticentre cluster
title_full_unstemmed The old open cluster Trumpler 5: A reddened, metal-poor anticentre cluster
title_sort old open cluster trumpler 5: a reddened, metal-poor anticentre cluster
publishDate 2004
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00358711_v349_n2_p641_Piatti
http://hdl.handle.net/20.500.12110/paper_00358711_v349_n2_p641_Piatti
_version_ 1768544585680683008

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