A Multidata Approach to Open Clusters: Roslund 3 and Ruprecht 174 in CCD UBV and Gaia DR3 Context
A detailed analysis of the structural, astrophysical, kinematic, and dynamical properties of the open clusters Roslund 3 and Ruprecht 174 is carried out using CCD UBV photometry in conjunction with astrometric and photometric data from Gaia DR3. Membership probabilities were computed via the UPMASK...
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IOP Publishing
2025-01-01
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| Series: | The Astronomical Journal |
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| Online Access: | https://doi.org/10.3847/1538-3881/adef16 |
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| author | Hülya Karagöz Talar Yontan Selçuk Bilir Olcay Plevne Tansel Ak Serap Ak Remziye Canbay Timothy Banks |
| author_facet | Hülya Karagöz Talar Yontan Selçuk Bilir Olcay Plevne Tansel Ak Serap Ak Remziye Canbay Timothy Banks |
| author_sort | Hülya Karagöz |
| collection | DOAJ |
| description | A detailed analysis of the structural, astrophysical, kinematic, and dynamical properties of the open clusters Roslund 3 and Ruprecht 174 is carried out using CCD UBV photometry in conjunction with astrometric and photometric data from Gaia DR3. Membership probabilities were computed via the UPMASK algorithm applied to Gaia proper motions and trigonometric parallaxes, leading to the identification of 198 likely members for Roslund 3 and 397 for Ruprecht 174. Astrophysical parameters were derived using both the classical approach, where parameters are independently determined, and a Markov chain Monte Carlo technique, which estimates them simultaneously. The agreement between the results from both methods confirms their reliability and highlights the robustness of the classical method. The reddening values were determined as E ( B − V ) = 0.410 ± 0.046 mag for Roslund 3 and E ( B − V ) = 0.615 ± 0.042 mag for Ruprecht 174. The estimated distances are d = 1687 ± 121 pc for Roslund 3 and d = 2385 ± 163 pc for Ruprecht 174. Both clusters exhibit metallicities close to the solar value, with [Fe/H] = 0.030 ± 0.065 dex for Roslund 3 and [Fe/H] = 0.041 ± 0.064 dex for Ruprecht 174. The corresponding ages were found to be τ = 60 ± 6 and τ = 520 ± 50 Myr, respectively. The present-day mass function slopes were found to be 1.18 ± 0.13 for Roslund 3 and 1.53 ± 0.30 for Ruprecht 174, consistent with the canonical Salpeter value within uncertainties. Galactic orbital analyses indicate that both clusters are thin-disk members confined within the Solar circle. Additionally, relaxation times and spatial distributions of stars suggest that both clusters have reached dynamical relaxation and exhibit clear signs of mass segregation. |
| format | Article |
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| institution | Kabale University |
| issn | 1538-3881 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astronomical Journal |
| spelling | doaj-art-d127198a219a4ecbbbdcf3ca814bac4e2025-08-20T03:40:07ZengIOP PublishingThe Astronomical Journal1538-38812025-01-01170314910.3847/1538-3881/adef16A Multidata Approach to Open Clusters: Roslund 3 and Ruprecht 174 in CCD UBV and Gaia DR3 ContextHülya Karagöz0https://orcid.org/0009-0004-5726-3749Talar Yontan1https://orcid.org/0000-0002-5657-6194Selçuk Bilir2https://orcid.org/0000-0003-3510-1509Olcay Plevne3https://orcid.org/0000-0002-0435-4493Tansel Ak4https://orcid.org/0000-0002-0688-1983Serap Ak5https://orcid.org/0000-0002-0912-6019Remziye Canbay6https://orcid.org/0000-0003-2575-9892Timothy Banks7https://orcid.org/0000-0001-9445-4588Istanbul University , Institute of Graduate Studies in Science, Programme of Astronomy and Space Sciences, 34116, Istanbul, Turkey ; hulyaercay5@gmail.comIstanbul University , Faculty of Science, Department of Astronomy and Space Sciences, 34119, Beyazıt, Istanbul, TurkeyIstanbul University , Faculty of Science, Department of Astronomy and Space Sciences, 34119, Beyazıt, Istanbul, TurkeyIstanbul University , Faculty of Science, Department of Astronomy and Space Sciences, 34119, Beyazıt, Istanbul, TurkeyIstanbul University , Faculty of Science, Department of Astronomy and Space Sciences, 34119, Beyazıt, Istanbul, Turkey; Istanbul University , Observatory Research and Application Center, Istanbul University, 34119, Istanbul, TurkeyIstanbul University , Faculty of Science, Department of Astronomy and Space Sciences, 34119, Beyazıt, Istanbul, TurkeyIstanbul University , Faculty of Science, Department of Astronomy and Space Sciences, 34119, Beyazıt, Istanbul, TurkeyNielsen , 675 6th Ave, New York, NY 10011, USA; Department of Physical Science and Engineering, Harper College , 1200 W Algonquin Rd, IL 60067, USAA detailed analysis of the structural, astrophysical, kinematic, and dynamical properties of the open clusters Roslund 3 and Ruprecht 174 is carried out using CCD UBV photometry in conjunction with astrometric and photometric data from Gaia DR3. Membership probabilities were computed via the UPMASK algorithm applied to Gaia proper motions and trigonometric parallaxes, leading to the identification of 198 likely members for Roslund 3 and 397 for Ruprecht 174. Astrophysical parameters were derived using both the classical approach, where parameters are independently determined, and a Markov chain Monte Carlo technique, which estimates them simultaneously. The agreement between the results from both methods confirms their reliability and highlights the robustness of the classical method. The reddening values were determined as E ( B − V ) = 0.410 ± 0.046 mag for Roslund 3 and E ( B − V ) = 0.615 ± 0.042 mag for Ruprecht 174. The estimated distances are d = 1687 ± 121 pc for Roslund 3 and d = 2385 ± 163 pc for Ruprecht 174. Both clusters exhibit metallicities close to the solar value, with [Fe/H] = 0.030 ± 0.065 dex for Roslund 3 and [Fe/H] = 0.041 ± 0.064 dex for Ruprecht 174. The corresponding ages were found to be τ = 60 ± 6 and τ = 520 ± 50 Myr, respectively. The present-day mass function slopes were found to be 1.18 ± 0.13 for Roslund 3 and 1.53 ± 0.30 for Ruprecht 174, consistent with the canonical Salpeter value within uncertainties. Galactic orbital analyses indicate that both clusters are thin-disk members confined within the Solar circle. Additionally, relaxation times and spatial distributions of stars suggest that both clusters have reached dynamical relaxation and exhibit clear signs of mass segregation.https://doi.org/10.3847/1538-3881/adef16Open star clustersHertzsprung Russell diagramStellar kinematics |
| spellingShingle | Hülya Karagöz Talar Yontan Selçuk Bilir Olcay Plevne Tansel Ak Serap Ak Remziye Canbay Timothy Banks A Multidata Approach to Open Clusters: Roslund 3 and Ruprecht 174 in CCD UBV and Gaia DR3 Context The Astronomical Journal Open star clusters Hertzsprung Russell diagram Stellar kinematics |
| title | A Multidata Approach to Open Clusters: Roslund 3 and Ruprecht 174 in CCD UBV and Gaia DR3 Context |
| title_full | A Multidata Approach to Open Clusters: Roslund 3 and Ruprecht 174 in CCD UBV and Gaia DR3 Context |
| title_fullStr | A Multidata Approach to Open Clusters: Roslund 3 and Ruprecht 174 in CCD UBV and Gaia DR3 Context |
| title_full_unstemmed | A Multidata Approach to Open Clusters: Roslund 3 and Ruprecht 174 in CCD UBV and Gaia DR3 Context |
| title_short | A Multidata Approach to Open Clusters: Roslund 3 and Ruprecht 174 in CCD UBV and Gaia DR3 Context |
| title_sort | multidata approach to open clusters roslund 3 and ruprecht 174 in ccd ubv and gaia dr3 context |
| topic | Open star clusters Hertzsprung Russell diagram Stellar kinematics |
| url | https://doi.org/10.3847/1538-3881/adef16 |
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