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Detections of [C ii] 158 mu m and [O iii] 88 mu m in a Local Lyman Continuum Emitter, Mrk 54, and Its Implications to High-redshift ALMA Studies*

Ura, Ryota (author)
Univ Tsukuba, Fac Pure & Appl Sci, Div Phys, Tsukuba, Ibaraki 3058571, Japan.
Hashimoto, Takuya (author)
Univ Tsukuba, Fac Pure & Appl Sci, Div Phys, Tsukuba, Ibaraki 3058571, Japan.;Univ Tsukuba, Fac Pure & Appl Sci, Tomonaga Ctr Hist Universe TCHoU, Tsukuba, Ibaraki 3058571, Japan.
Inoue, Akio K. (author)
Waseda Univ, Sch Adv Sci & Engn, Dept Phys, 3-4-1 Okubo,Shinjuku, Tokyo 1698555, Japan.;Waseda Univ, Res Inst Sci & Engn, Fac Sci & Engn, 3-4-1 Okubo,Shinjuku, Tokyo 1698555, Japan.
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Fadda, Dario (author)
Univ Space Res Assoc, SOFIA Sci Ctr, MS 232-11, Moffett Field, CA 94035 USA.
Hayes, Matthew (author)
Stockholm Univ, Oskar Klein Ctr, Dept Astron, SE-10691 Stockholm, Sweden.
Puschnig, Johannes (author)
Stockholm Univ, Oskar Klein Ctr, Dept Astron, SE-10691 Stockholm, Sweden.;Argelander Inst Astron, Hugel 71, D-53121 Bonn, Germany.
Zackrisson, Erik (author)
Uppsala universitet,Observationell astrofysik
Tamura, Yoichi (author)
Nagoya Univ, Grad Sch Sci, Dept Phys, Nagoya 4648602, Japan.
Matsuo, Hiroshi (author)
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.
Mawatari, Ken (author)
Natl Astron Observ Japan, 2-21-1 Osawa, Mitaka, Tokyo 1818588, Japan.
Fudamoto, Yoshinobu (author)
Waseda Univ, Res Inst Sci & Engn, Fac Sci & Engn, 3-4-1 Okubo,Shinjuku, Tokyo 1698555, Japan.;Natl Astron Observ Japan, 2-21-1 Osawa, Mitaka, Tokyo 1818588, Japan.
Hagimoto, Masato (author)
Nagoya Univ, Grad Sch Sci, Dept Phys, Nagoya 4648602, Japan.
Kuno, Nario (author)
Univ Tsukuba, Fac Pure & Appl Sci, Div Phys, Tsukuba, Ibaraki 3058571, Japan.;Univ Tsukuba, Fac Pure & Appl Sci, Tomonaga Ctr Hist Universe TCHoU, Tsukuba, Ibaraki 3058571, Japan.
Sugahara, Yuma (author)
Waseda Univ, Res Inst Sci & Engn, Fac Sci & Engn, 3-4-1 Okubo,Shinjuku, Tokyo 1698555, Japan.;Natl Astron Observ Japan, 2-21-1 Osawa, Mitaka, Tokyo 1818588, Japan.
Yamanaka, Satoshi (author)
Natl Inst Technol, Toba Coll, Gen Educ Dept, 1-1 Ikegami Cho, Toba, Mie 5178501, Japan.
Bakx, Tom J. L. C. (author)
Nagoya Univ, Grad Sch Sci, Dept Phys, Nagoya 4648602, Japan.;Natl Astron Observ Japan, 2-21-1 Osawa, Mitaka, Tokyo, Japan.
Nakazato, Yurina (author)
Univ Tokyo, Sch Sci, Dept Phys, 7-3-1 Hongo,Bunkyo, Tokyo, 1130033, Japan.
Usui, Mitsutaka (author)
Univ Tsukuba, Fac Pure & Appl Sci, Div Phys, Tsukuba, Ibaraki 3058571, Japan.
Yajima, Hidenobu (author)
Univ Tsukuba, Fac Pure & Appl Sci, Div Phys, Tsukuba, Ibaraki 3058571, Japan.;Univ Tsukuba, Ctr Computat Sci, Ten Nodai,1-1-1 Tsukuba, Tsukuba, Ibaraki 3058577, Japan.
Yoshida, Naoki (author)
Univ Tokyo, Sch Sci, Dept Phys, 7-3-1 Hongo,Bunkyo, Tokyo, 1130033, Japan.;Univ Tokyo, Kavli Inst Phys & Math Universe WPI, UT Inst Adv Study, Kashiwa, Chiba 2778583, Japan.
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Univ Tsukuba, Fac Pure & Appl Sci, Div Phys, Tsukuba, Ibaraki 3058571, Japan Univ Tsukuba, Fac Pure & Appl Sci, Div Phys, Tsukuba, Ibaraki 3058571, Japan.;Univ Tsukuba, Fac Pure & Appl Sci, Tomonaga Ctr Hist Universe TCHoU, Tsukuba, Ibaraki 3058571, Japan. (creator_code:org_t)
Institute of Physics Publishing (IOPP), 2023
2023
English.
In: Astrophysical Journal. - : Institute of Physics Publishing (IOPP). - 0004-637X .- 1538-4357. ; 948:1
Related links:
https://uu.diva-port... (primary) (Raw object)
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https://urn.kb.se/re...
https://doi.org/10.3...
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  • Journal article (peer-reviewed)
Abstract Subject headings
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  • We present integral field, far-infrared (FIR) spectroscopy of Mrk 54, a local Lyman continuum emitter, obtained with FIFI-LS on the Stratospheric Observatory for Infrared Astronomy. This is only the second time, after Haro 11, that [C ii] 158 mu m and [O iii] 88 mu m spectroscopy of the known LCEs have been obtained. We find that Mrk 54 has a strong [C ii] emission that accounts for similar to 1% of the total FIR luminosity, whereas it has only moderate [O iii] emission, resulting in the low [O iii]/[C ii] luminosity ratio of 0.22 +/- 0.06. In order to investigate whether [O iii]/[C ii] is a useful tracer of f (esc) (LyC escape fraction), we examine the correlations of [O iii]/[C ii] and (i) the optical line ratio of O-32 equivalent to [O iii] 5007 angstrom/[O ii] 3727 angstrom, (ii) specific star formation rate, (iii) [O iii] 88 mu m/[O i] 63 mu m ratio, (iv) gas-phase metallicity, and (v) dust temperature based on a combined sample of Mrk 54 and the literature data from the Herschel Dwarf Galaxy Survey and the LITTLE THINGS Survey. We find that galaxies with high [O iii]/[C ii] luminosity ratios could be the result of high ionization (traced by O-32), bursty star formation, high ionized-to-neutral gas volume filling factors (traced by [O iii] 88 mu m/[O i] 63 mu m), and low gas-phase metallicities, which is in agreement with theoretical predictions. We present an empirical relation between the [O iii]/[C ii] ratio and f (esc) based on the combination of the [O iii]/[C ii] and O-32 correlation, and the known relation between O-32 and f (esc). The relation implies that high-redshift galaxies with high [O iii]/[C ii] ratios revealed by the Atacama Large Millimeter/submillimeter Array may have f (esc) greater than or similar to 0.1, significantly contributing to the cosmic reionization.

Subject headings

NATURVETENSKAP  -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)

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