Sökning: id:"swepub:oai:DiVA.org:uu-462225" >
Big Three Dragons :
Big Three Dragons : A [N ii] 122 μm Constraint and New Dust-continuum Detection of a z = 7.15 Bright Lyman-break Galaxy with ALMA
-
- Sugahara, Yuma (författare)
- Natl Astron Observ Japan, 2-21-1 Osawa, Mitaka, Tokyo 1818588, Japan.;Waseda Univ, Waseda Res Inst Sci & Engn, Fac Sci & Engn, Shinjuku Ku, 3-4-1,Okubo, Tokyo 1698555, Japan.
-
- Inoue, Akio K. (författare)
- Waseda Univ, Waseda Res Inst Sci & Engn, Fac Sci & Engn, Shinjuku Ku, 3-4-1,Okubo, Tokyo 1698555, Japan.;Waseda Univ, Sch Adv Sci & Engn, Dept Phys, Fac Sci & Engn,Shinju Ku, 3-4-1,Okubo, Tokyo 1698555, Japan.
-
- Hashimoto, Takuya (författare)
- Univ Tsukuba, Tomonaga Ctr Hist Univ TCHoU, Fac Pure & Appl Sci, Tsukuba, Ibaraki 3058571, Japan.
-
visa fler...
-
- Yamanaka, Satoshi (författare)
- Waseda Univ, Waseda Res Inst Sci & Engn, Fac Sci & Engn, Shinjuku Ku, 3-4-1,Okubo, Tokyo 1698555, Japan.;Ehime Univ, Res Ctr Space & Cosm Evolut, 2-5 Bunkyo Cho, Matsuyama, Ehime 7908577, Japan.
-
- Fujimoto, Seiji (författare)
- Cosm Dawn Ctr DAWN, Jagtvej 128, DK-2200 Copenhagen N, Denmark.;Univ Copenhagen, Niels Bohr Inst, Lyngbyvej 2, DK-2100 Copenhagen, Denmark.
-
- Tamura, Yoichi (författare)
- Nagoya Univ, Grad Sch Sci, Div Particle & Astrophys Sci, Nagoya, Aichi 4648602, Japan.
-
- Matsuo, Hiroshi (författare)
- Natl Astron Observ Japan, 2-21-1 Osawa, Mitaka, Tokyo 1818588, Japan.;Grad Univ Adv Studies SOKENDAI, 2-21-1,Osawa, Mitaka, Tokyo 1818588, Japan.
-
- Binggeli, Christian, 1989- (författare)
- Uppsala universitet,Observationell astrofysik
-
- Zackrisson, Erik (författare)
- Uppsala universitet,Observationell astrofysik
-
visa färre...
-
Natl Astron Observ Japan, 2-21-1 Osawa, Mitaka, Tokyo 1818588, Japan;Waseda Univ, Waseda Res Inst Sci & Engn, Fac Sci & Engn, Shinjuku Ku, 3-4-1,Okubo, Tokyo 1698555, Japan. Waseda Univ, Waseda Res Inst Sci & Engn, Fac Sci & Engn, Shinjuku Ku, 3-4-1,Okubo, Tokyo 1698555, Japan.;Waseda Univ, Sch Adv Sci & Engn, Dept Phys, Fac Sci & Engn,Shinju Ku, 3-4-1,Okubo, Tokyo 1698555, Japan. (creator_code:org_t)
- 2021-12-07
- 2021
- Engelska.
-
Ingår i: Astrophysical Journal. - : American Astronomical Society. - 0004-637X .- 1538-4357. ; 923:1
- Relaterad länk:
-
http://arxiv.org/pdf...
-
visa fler...
-
https://urn.kb.se/re...
-
https://doi.org/10.3...
-
visa färre...
Abstract
Ämnesord
Stäng
- We present new Atacama Large Millimeter/submillimeter Array Band 7 observational results of a Lyman-break galaxy at z = 7.15, B14-65666 ("Big Three Dragons"), which is an object detected in [O iii] 88 μm, [C ii] 158 μm, and dust continuum emission during the epoch of reionization. Our targets are the [N ii] 122 μm fine-structure emission line and the underlying 120 μm dust continuum. The dust continuum is detected with a ∼19σ significance. From far-infrared spectral energy distribution sampled at 90, 120, and 160 μm, we obtain a best-fit dust temperature of 40 K (79 K) and an infrared luminosity of (12.1) at the emissivity index β = 2.0 (1.0). The [N ii] 122 μm line is not detected. The 3σ upper limit of the [N ii] luminosity is 8.1 × 107 L⊙. From the [N ii], [O iii], and [C ii] line luminosities, we use the Cloudy photoionization code to estimate nebular parameters as functions of metallicity. If the metallicity of the galaxy is high (Z > 0.4 Z⊙), the ionization parameter and hydrogen density are and nH ≃ 50–250 cm−3, respectively, which are comparable to those measured in low-redshift galaxies. The nitrogen-to-oxygen abundance ratio, N/O, is constrained to be subsolar. At Z < 0.4 Z⊙, the allowed U drastically increases as the assumed metallicity decreases. For high ionization parameters, the N/O constraint becomes weak. Finally, our Cloudy models predict the location of B14-65666 on the BPT diagram, thereby allowing a comparison with low-redshift galaxies.
Ämnesord
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas