Ruprecht 1: A small, moderately young open cluster in the third galactic quadrant

We present CCD observations in the Washington system C and T1 passbands down to T1 ∼ 18.5 in the field of Ruprecht 1, a poorly studied open cluster located in the third Galactic quadrant. We measured T 1 magnitudes and C - T1 colors for a total of 862 stars distributed throughout an area of 13.6...

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Guardado en:
Detalles Bibliográficos
Publicado: 2008
Materias:
General - techniques
Individual (Ruprecht 1) - open clusters
Open clusters
Photometric
Washington system
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13920049_v17_n1_p67_Piatti
http://hdl.handle.net/20.500.12110/paper_13920049_v17_n1_p67_Piatti
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_13920049_v17_n1_p67_Piatti
record_format dspace
spelling paper:paper_13920049_v17_n1_p67_Piatti2023-06-08T16:13:13Z Ruprecht 1: A small, moderately young open cluster in the third galactic quadrant General - techniques Individual (Ruprecht 1) - open clusters Open clusters Photometric Washington system We present CCD observations in the Washington system C and T1 passbands down to T1 ∼ 18.5 in the field of Ruprecht 1, a poorly studied open cluster located in the third Galactic quadrant. We measured T 1 magnitudes and C - T1 colors for a total of 862 stars distributed throughout an area of 13.6' × 13.6'. The cluster turned out to be very small; its linear radius being 2.6 ±0.2 pc, as estimated from star counts in appropriate-sized boxes distributed throughout the entire field observed. By fitting the zero-age main sequence to the T1 vs. C - T1 color-magnitude diagram, we derive Eb-v = 0.25 ±0.05, independently from the cluster's metallicity. Our analysis suggests that Ruprecht 1 is moderately young. In fact, adopting the theoretical metal contents Z = 0.02 and 0.008, which provide the best global fits, we derive heliocentric distances of d = 1.9 ±0.4 kpc and 1.5 ±0.3 kpc and ages of 200 ±47 Myr and 251 ± 58 Myr in each case. 2008 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13920049_v17_n1_p67_Piatti http://hdl.handle.net/20.500.12110/paper_13920049_v17_n1_p67_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 General - techniques
Individual (Ruprecht 1) - open clusters
Open clusters
Photometric
Washington system
spellingShingle General - techniques
Individual (Ruprecht 1) - open clusters
Open clusters
Photometric
Washington system
Ruprecht 1: A small, moderately young open cluster in the third galactic quadrant
topic_facet General - techniques
Individual (Ruprecht 1) - open clusters
Open clusters
Photometric
Washington system
description We present CCD observations in the Washington system C and T1 passbands down to T1 ∼ 18.5 in the field of Ruprecht 1, a poorly studied open cluster located in the third Galactic quadrant. We measured T 1 magnitudes and C - T1 colors for a total of 862 stars distributed throughout an area of 13.6' × 13.6'. The cluster turned out to be very small; its linear radius being 2.6 ±0.2 pc, as estimated from star counts in appropriate-sized boxes distributed throughout the entire field observed. By fitting the zero-age main sequence to the T1 vs. C - T1 color-magnitude diagram, we derive Eb-v = 0.25 ±0.05, independently from the cluster's metallicity. Our analysis suggests that Ruprecht 1 is moderately young. In fact, adopting the theoretical metal contents Z = 0.02 and 0.008, which provide the best global fits, we derive heliocentric distances of d = 1.9 ±0.4 kpc and 1.5 ±0.3 kpc and ages of 200 ±47 Myr and 251 ± 58 Myr in each case.
title Ruprecht 1: A small, moderately young open cluster in the third galactic quadrant
title_short Ruprecht 1: A small, moderately young open cluster in the third galactic quadrant
title_full Ruprecht 1: A small, moderately young open cluster in the third galactic quadrant
title_fullStr Ruprecht 1: A small, moderately young open cluster in the third galactic quadrant
title_full_unstemmed Ruprecht 1: A small, moderately young open cluster in the third galactic quadrant
title_sort ruprecht 1: a small, moderately young open cluster in the third galactic quadrant
publishDate 2008
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13920049_v17_n1_p67_Piatti
http://hdl.handle.net/20.500.12110/paper_13920049_v17_n1_p67_Piatti
_version_ 1768541811996884992

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