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Possible Systematic Rotation in the Mature Stellar Population of a z = 9.1 Galaxy

التفاصيل البيبلوغرافية
العنوان: Possible Systematic Rotation in the Mature Stellar Population of a z = 9.1 Galaxy
المؤلفون: Tokuoka, T, Inoue, AK, Hashimoto, T, Ellis, RS, Laporte, N, Sugahara, Y, Matsuo, H, Tamura, Y, Fudamoto, Y, Moriwaki, K, Roberts-Borsani, G, Shimizu, I, Yamanaka, S, Yoshida, N, Zackrisson, E, Zheng, W
بيانات النشر: American Astronomical Society
//dx.doi.org/10.3847/2041-8213/ac7447
Astrophysical Journal Letters
سنة النشر: 2022
المجموعة: Apollo - University of Cambridge Repository
مصطلحات موضوعية: 5101 Astronomical Sciences, 51 Physical Sciences
الوصف: Abstract We present new observations with the Atacama Large Millimeter/submillimeter Array for a gravitationally lensed galaxy at z = 9.1, MACS1149-JD1. [O iii] 88 μm emission is detected at 10σ with a spatial resolution of ∼0.3 kpc in the source plane, enabling the most distant morphokinematic study of a galaxy. The [O iii] emission is distributed smoothly without any resolved clumps and shows a clear velocity gradient with ΔV obs/2σ tot = 0.84 ± 0.23, where ΔV obs is the observed maximum velocity difference and σ tot is the velocity dispersion measured in the spatially integrated line profile, suggesting a rotating system. Assuming a geometrically thin self-gravitating rotation disk model, we obtain V rot / σ V = 0.67 − 0.26 + 0.73 , where V rot and σ V are the rotation velocity and velocity dispersion, respectively, still consistent with rotation. The resulting disk mass of 0.65 − 0.40 + 1.37 × 10 ...
نوع الوثيقة: article in journal/newspaper
وصف الملف: text/xml; application/pdf
اللغة: English
العلاقة: https://www.repository.cam.ac.uk/handle/1810/338651Test
DOI: 10.17863/CAM.86062
الإتاحة: https://doi.org/10.17863/CAM.86062Test
https://www.repository.cam.ac.uk/handle/1810/338651Test
رقم الانضمام: edsbas.57D05337
قاعدة البيانات: BASE
الوصف
DOI:10.17863/CAM.86062