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Possible Systematic...
Possible Systematic Rotation in the Mature Stellar Population of a z=9.1 Galaxy
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- Tokuoka, Tsuyoshi (author)
- Waseda Univ, Fac Sci & Engn, Grad Sch Adv Sci & Engn, Dept Pure & Appl Phys, 3-4-1 Okubo, Tokyo 1698555, Japan.
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- Inoue, Akio K. (author)
- Waseda Univ, Fac Sci & Engn, Grad Sch Adv Sci & Engn, Dept Pure & Appl Phys, 3-4-1 Okubo, Tokyo 1698555, Japan.;Waseda Univ, Fac Sci & Engn, Waseda Res Inst Sci & Engn, 3-4-1 Okubo, Tokyo 1698555, Japan.
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- Hashimoto, Takuya (author)
- Univ Tsukuba, Fac Pure & Appl Sci, Tomonaga Ctr Hist Universe TCHoU, Tsukuba, Ibaraki 3058571, Japan.
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- Ellis, Richard S. (author)
- UCL, Dept Phys & Astron, Gower St, London WC1E 6BT, England.
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- Laporte, Nicolas (author)
- Univ Cambridge, Kavli Inst Cosmol, Madingley Rd, Cambridge CB3 0HA, England.;Univ Cambridge, Cavendish Lab, 19 JJ Thomson Ave, Cambridge CB3 0HE, England.
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- Sugahara, Yuma (author)
- Waseda Univ, Fac Sci & Engn, Waseda Res Inst Sci & Engn, 3-4-1 Okubo, Tokyo 1698555, Japan.;Natl Astron Observ Japan, 2-21-1 Osawa, Mitaka, Tokyo 1818588, Japan.
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- Matsuo, Hiroshi (author)
- Natl Astron Observ Japan, 2-21-1 Osawa, Mitaka, Tokyo 1818588, Japan.
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- Tamura, Yoichi (author)
- Nagoya Univ, Grad Sch Sci, Div Particle & Astrophys Sci, Nagoya, Aichi 4648602, Japan.
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- Fudamoto, Yoshinobu (author)
- Waseda Univ, Fac Sci & Engn, Waseda Res Inst Sci & Engn, 3-4-1 Okubo, Tokyo 1698555, Japan.;Natl Astron Observ Japan, 2-21-1 Osawa, Mitaka, Tokyo 1818588, Japan.
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- Moriwaki, Kana (author)
- Univ Tokyo, Dept Phys, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1130033, Japan.
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- Roberts-Borsani, Guido (author)
- Univ Calif Los Angeles, Dept Phys & Astron, 430 Portola Plaza, Los Angeles, CA 90095 USA.
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- Shimizu, Ikkoh (author)
- Shikoku Gakuin Univ, Dept Literature, 3-2-1 Bunkyocho, Zentsuji, Kagawa 7658505, Japan.
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- Yamanaka, Satoshi (author)
- Toba Coll, Natl Inst Technol, Gen Educ Dept, 1-1 Ikegami Cho, Toba, Mie 5178501, Japan.
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- Yoshida, Naoki (author)
- Univ Tokyo, Dept Phys, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1130033, Japan.;Univ Tokyo, UT Inst Adv Study, Kavli Inst Phys & Math Universe WPI, 5-1-5 Kashiwanoha, Kashiwa, Chiba 2778583, Japan.;Univ Tokyo, Sch Sci, Res Ctr Early Universe, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1130033, Japan.;Univ Tokyo, Sch Sci, Inst Phys Intelligence, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1130033, Japan.
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- Zackrisson, Erik (author)
- Uppsala universitet,Observationell astrofysik
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- Zheng, Wei (author)
- Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA.
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Waseda Univ, Fac Sci & Engn, Grad Sch Adv Sci & Engn, Dept Pure & Appl Phys, 3-4-1 Okubo, Tokyo 1698555, Japan Waseda Univ, Fac Sci & Engn, Grad Sch Adv Sci & Engn, Dept Pure & Appl Phys, 3-4-1 Okubo, Tokyo 1698555, Japan.;Waseda Univ, Fac Sci & Engn, Waseda Res Inst Sci & Engn, 3-4-1 Okubo, Tokyo 1698555, Japan. (creator_code:org_t)
- 2022-07-01
- 2022
- English.
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In: Astrophysical Journal Letters. - : Institute of Physics Publishing (IOPP). - 2041-8205 .- 2041-8213. ; 933:1
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Abstract
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- 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 mu m emission is detected at 10 sigma with a spatial resolution of similar to 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 Delta V-obs/2 sigma(tot) = 0.84 +/- 0.23, where Delta V-obs is the observed maximum velocity difference and sigma(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/sigma(V)=0.67-0.26+0.73, where V-rot and sigma (V) are the rotation velocity and velocity dispersion, respectively, still consistent with rotation. The resulting disk mass of 0.65-0.40+1.37x10(9) M-circle dot is consistent with being associated with the stellar mass identified with a 300 Myr old stellar population independently indicated by a Balmer break in the spectral energy distribution. We conclude that the most of the dynamical mass is associated with the previously identified mature stellar population that formed at z similar to 15.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
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Tokuoka, Tsuyosh ...
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Inoue, Akio K.
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Hashimoto, Takuy ...
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Ellis, Richard S ...
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Laporte, Nicolas
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Sugahara, Yuma
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Matsuo, Hiroshi
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Tamura, Yoichi
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Fudamoto, Yoshin ...
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Moriwaki, Kana
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Roberts-Borsani, ...
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Shimizu, Ikkoh
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Yamanaka, Satosh ...
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Yoshida, Naoki
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Zackrisson, Erik
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Zheng, Wei
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NATURAL SCIENCES
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Uppsala University