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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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_13920049_v17_n1_p67_Piatti |
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todo:paper_13920049_v17_n1_p67_Piatti2023-10-03T16:12:48Z Ruprecht 1: A small, moderately young open cluster in the third galactic quadrant Piatti, A.E. Clariá, J.J. Parisi, M.C. Ahumada, A.V. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar 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 Piatti, A.E. Clariá, J.J. Parisi, M.C. Ahumada, A.V. 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. |
| format |
JOUR |
| author |
Piatti, A.E. Clariá, J.J. Parisi, M.C. Ahumada, A.V. |
| author_facet |
Piatti, A.E. Clariá, J.J. Parisi, M.C. Ahumada, A.V. |
| author_sort |
Piatti, A.E. |
| 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 |
| url |
http://hdl.handle.net/20.500.12110/paper_13920049_v17_n1_p67_Piatti |
| work_keys_str_mv |
AT piattiae ruprecht1asmallmoderatelyyoungopenclusterinthethirdgalacticquadrant AT clariajj ruprecht1asmallmoderatelyyoungopenclusterinthethirdgalacticquadrant AT parisimc ruprecht1asmallmoderatelyyoungopenclusterinthethirdgalacticquadrant AT ahumadaav ruprecht1asmallmoderatelyyoungopenclusterinthethirdgalacticquadrant |
| _version_ |
1807317852849438720 |