Analysis of the Young Open Cluster Trumpler 2 Using Gaia DR3 Data

Year 2023, , 1 - 10, 20.06.2023

Seval Taşdemir , Talar Yontan

https://doi.org/10.26650/PAR.2023.00001

Abstract

We present an investigation of the open cluster Trumpler 2 using Gaia DR3 photometric, astrometric and spectroscopic data. 92 stars were identified as likely members of the cluster, with membership probabilities greater than 0.5. The mean proper-motion components of the cluster are derived as (𝜇𝛼 cos 𝛿, 𝜇𝛿)=(1.494 ± 0.004, −5.386 ± 0.005) mas yr−1 . By comparing the Gaia based colour-magnitude diagram with the PARSEC isochrones scaled to 𝑧 = 0.0088, age, distance modulus and reddening are simultaneously estimated as 𝑡 = 110±10 Myr, 𝜇 = 10.027±0.149 mag and 𝐸(𝐺BP −𝐺RP) = 0.452±0.019 mag, respectively. The total mass of the cluster is estimated as 162 𝑀/𝑀⊙ based on the stars with membership probabilities 𝑃 > 0. The mass function slope is derived to be Γ = 1.33 ± 0.13 for Trumpler 2. This value is in a good agreement with that of Salpeter. Galactic orbit analyses show that the Trumpler 2 orbits in a boxy pattern outside the solar circle and belongs to the young thin-disc component of the Galaxy.

Keywords

Galaxy: open clusters and associations; individual: Trumpler 2, Galaxy: Stellar kinematics, stars: Hertzsprung Russell (HR) diagram

References

• Akbulut B., Ak S., Yontan T., Bilir S., Ak T., Banks T., Ulgen E. K., Paunzen E., 2021, Ap&SS, 366, 68 google scholar
• Banks T., Yontan T., Bilir S., Canbay R., 2020, Journal of Astrophysics and Astronomy, 41, 6 google scholar
• Bilir S., Karaali S., Ak S., Yaz E., Hamzaoglu E., 2006a, New Astron.,12, 234 google scholar
• Bilir S., Karaali S., Gilmore G., 2006b, MNRAS, 366, 1295 google scholar
• Bilir S., Cabrera-Lavers A., Karaali S., Ak S., Yaz E., Lopez- google scholar
• Corredoira M., 2008, Publ. Astron. Soc. Australia, 25, 69 google scholar
• Bisht D., Zhu Q., Yadav R. K. S., Durgapal A., Rangwal G., 2020,MNRAS, 494, 607 google scholar
• Bossini D., et al., 2019, A&A, 623, A108 google scholar
• Bovy J., 2015, ApJS, 216, 29 google scholar
• Bovy J., Tremaine S., 2012, ApJ, 756, 89 google scholar
• Bressan A., Marigo P., Girardi L., Salasnich B., Dal Cero C., Rubele S., Nanni A., 2012, MNRAS, 427, 127 google scholar
• Bukowiecki T., Maciejewski G., Konorski P., Strobel A., 2011, Acta Astron., 61, 231 google scholar
• Cantat-Gaudin T., Anders F., 2020, A&A, 633, A99 google scholar
• Cantat-Gaudin T., et al., 2018, A&A, 618, A93 google scholar
• Cantat-Gaudin T., et al., 2020, A&A, 640, A1 google scholar
• Carraro G., Sales Silva J. V., Moni Bidin C., Vazquez R. A., 2017, AJ,153, 99 google scholar
• Carrera R., et al., 2022, A&A, 663, A148 google scholar
• Castro-Ginard A., Jordi C., Luri X., Julbe F., Morvan M., Balaguer-Nunez L., Cantat-Gaudin T., 2018, A&A, 618, A59 google scholar
• Castro-Ginard A., Jordi C., Luri X., Cantat-Gaudin T., Balaguer-Nunez L., 2019, A&A, 627, A35 google scholar
• Castro-Ginard A., et al., 2020, A&A, 635, A45 google scholar
• Cogkunoglu B., et al., 2011, MNRAS, 412, 1237 google scholar
• Dias W. S., Monteiro H., Caetano T C., Lepine J. R. D., Assafin M.,Oliveira A. F., 2014, A&A, 564, A79 google scholar
• Dias W. S., Monteir H., Moitinho A., Lepine J. R. D., Carraro G.,Paunzen E., Alessi B., Villela L., 2021, MNRAS, 504, 356 google scholar
• Frolov V. N., Ananjevskaja J. K., Jilinski E. G., Gorshanov D. L.,Bronnikova N. M., 2006, A&A, 451, 901 google scholar
• Gaia Collaboration et al., 2016, A&A, 595, A1 google scholar
• Gaia Collaboration et al., 2018, A&A, 616, A1 google scholar
• Gaia Collaboration et al., 2022, arXiv e-prints, p. arXiv:2208.00211 google scholar
• Joshi Y. C., Dambis A. K., Pandey A. K., Joshi S., 2016, A&A, 593,A116 google scholar
• Juric M., et al., 2008, ApJ, 673, 864 google scholar
• King I., 1962, AJ, 67, 471 google scholar
• Krone-Martins A., Moitinho A., 2014, A&A, 561, A57 google scholar
• Lada C. J., Lada E. A., 2003, ARA&A, 41, 57 google scholar
• Leggett S. K., 1992, ApJS, 82, 351 google scholar
• Liu L., Pang X., 2019, ApJS, 245, 32 google scholar
• Miyamoto M., Nagai R., 1975, PASJ, 27, 533 google scholar
• Navarro J. F., Frenk C. S., White S.D. M., 1996, ApJ, 462, 563 google scholar
• Paunzen E., Netopil M., Maitzen H. M., Pavlovski K., Schnell A.,Zejda M., 2014, MNRAS, 564, A42 google scholar
• Riello M., et al., 2021, A&A, 649, A3 google scholar
• Salpeter E. E., 1955, ApJ, 121, 161 google scholar
• Sariya D. P., et al., 2021, AJ, 161, 101 google scholar
• Soubiran C., et al., 2018, A&A, 619, A155 google scholar
• Sun M., Jiang B., Yuan H., Li J., 2021, ApJS, 254, 38 google scholar
• Trumpler R. J., 1930, Lick Observatory Bulletin, 420, 154 google scholar
• Wang H., Zhang Y., Zeng X., Hu Q., Liu J., Qin M., Lü G., 2022, AJ,164, 40 google scholar
• Yontan T., 2023, AJ, 165, 79 google scholar
• Zacharias N., Finch C. T., Girard T. M., Henden A., Bartlett J. L., google scholar
• Monet D. G., Zacharias M. I., 2013, AJ, 145, 44 google scholar
• Zejda M., Paunzen E., Baumann B., Mikulasek Z., Liska J., 2012,A&A, 548, A97 google scholar
• Zhong J., Chen L., Wu D., Li L., Bai L., Hou J., 2020, A&A, 640,A127 google scholar