Scorpius-Centaurus OB Oymağının Kinematik ve Fotometrik Analizi
Year 2023,
Volume: 4 Issue: 3 - Special Issue: Proceedings of the 22nd National Astronomy Congress, 90 - 96, 31.12.2023
Burcu Akbulut
,
Tansel Ak
,
Selçuk Bilir
,
Eyüp Kaan Ülgen
,
Lanz Anthonee Avila Lagman
Abstract
Genç yıldızlardan oluşan OB oymakları, bir yıldız bulutunun doğumundan dağılmasına kadar yıldız oluşumunun kaydını tutan laboratuvarlardır. Güneş’e en yakın olan Sco-Cen (Sco OB2) oymağı, aynı zamanda kütleli yıldız oluşumunun da bir örneğidir. Bu çalışmada Gaia DR3’ün yıldız parakslarının ve özhareketlerinin yüksek kalitesinden dolayı (l, b) = (322◦, +10◦) merkezli 1 yarıçap içindeki dairesel bölgede G = 17.5 mag’a kadar olan Sco OB2 bölgesini incelemekteyiz. Oymağın alt-gruplarını ve yeni üyelerini belirleyebilmek için DBSCAN kümeleme algoritmasını seçilen bölgeye uyguladık. Toplamda 40 alt-grup ve 4777 üye yıldız belirledik. Her bölgenin yıldız oluşum tarihini ortaya çıkarmak için PARSEC ishocrone'larını kullanarak altgrupların kümelenme analizini sağlıyoruz.
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Kinematic and Photometric Analysis of Scorpius-Centaurus OB Association
Year 2023,
Volume: 4 Issue: 3 - Special Issue: Proceedings of the 22nd National Astronomy Congress, 90 - 96, 31.12.2023
Burcu Akbulut
,
Tansel Ak
,
Selçuk Bilir
,
Eyüp Kaan Ülgen
,
Lanz Anthonee Avila Lagman
Abstract
OB associations of young stars are the laboratories that keep track of star formation from the birth of a star cloud to its dissolution. Sco OB2 association closest to the Sun is also an example of massive star formation. In this study, we research the Sco OB2 region up to G = 17.5 mag in the circular region within 1 radius centred (l, b) = (322, +10) due to the high quality of the stellar parallax and proper motions of {\it Gaia} DR3. We applied the DBSCAN clustering algorithm to the selected region to identify subgroups and new members of the tribe. In total, we identified 40 subgroups and 4777 member stars. We provide cluster analysis of subgroups using MESA age isochrones to reveal the star formation history of each region.
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- Babusiaux C., ve diğ., 2022, Gaia Data Release 3: Catalogue Validation
- Blaauw A., 1964, Annual Review of Astronomy and Astrophysics, 2, 213
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- Brown A. G. A., Blaauw A., Hoogerwerf R., de Bruijne J. H. J., de Zeeuw P. T., 1999, The Origin of Stars and Planetary Systems. Edited by Charles J. Lada and Nikolaos D. Kylafis. NATO ASI Series C, 342, 540
- Cantat-Gaudin T., ve diğ., 2018, Astronomy & Astrophysics, 618, A93
- Cantat-Gaudin T., ve diğ., 2020, Astronomy & Astrophysics, 640, A1
- Castro-Ginard A., Jordi C., Luri X., Julbe F., Morvan M., Balaguer- Nú ñez L., Cantat-Gaudin T., 2018, Astronomy & Astrophysics, 618, A59
- Castro-Ginard A., ve diğ., 2020, Astronomy & Astrophysics, 635, A45
- Damiani F., Prisinzano L., Micela G., Sciortino S., 2019, Astronomy & Astrophysics, 623, A25
- Dempster A. P., Laird N. M., Rubin D. B., 1997, Journal of the Royal Statistical Society. Series B (Methodological), 39, 1
- Ercolano B., Picogna G., Monsch K., Drake J. J., Preibisch T., 2021, Monthly Notices of the Royal Astronomical Society, 508, 1675
- Ester M., Kriegel H.-P., Sander J., Xu X., ve diğ., 1996. pp 226–231
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- Mamajek E. E., Lawson W. A., Feigelson E. D., 2000, The Astrophysical Journal, 544, 356
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- Preibisch T., Mamajek E., 2008, The Nearest OB Association: Scorpius-Centaurus (Sco OB2)
- Reylé C., Jardine K., Fouqué P., Caballero J. A., Smart R. L., Sozzetti A., 2021, Astronomy & Astrophysics, 650, A201
- Rizzuto A. C., Ireland M. J., Zucker D. B., 2012, Monthly Notices of the Royal Astronomical Society: Letters, 421, L97
- Zari E., Hashemi H., Brown A. G. A., Jardine K., de Zeeuw P. T., 2018, Astronomy & Astrophysics, 620, A172
- de Zeeuw P. T., Hoogerwerf R., de Bruijne J. H. J., Brown A. G. A., Blaauw A., 1999, The Astronomical Journal, 117, 354