TY - JOUR
T1 - Galactic outflows in star-forming galaxies at z ∼ 6 studied with deep UV spectra and ALMA emission line
AU - Sugahara, Yuma
AU - Ouchi, Masami
AU - Harikane, Yuichi
AU - Bouché, Nicolas
AU - Mitchell, Peter D.
AU - Blaizot, Jérémy
N1 - Publisher Copyright:
© International Astronomical Union 2020.
PY - 2019
Y1 - 2019
N2 - We present a velocity of galactic outflows in star-forming galaxies at the highest redshift, z ∼ 6, so far studied with metal absorption lines. Absorption-line studies of galactic outflows need well-determined redshifts, but there are few strong emission lines in the observed-frame optical spectra of galaxies at high redshifts. In this work, we use the systemic redshifts determined by the ALMA [CII]158 μm emission lines. The sample consists of seven Lyman break galaxies at 5.1 < z < 5.7 whose Keck/DEIMOS and ALMA data are available in the archive. The outflow maximum velocity (νmax) is estimated by a fitting of line profiles to metal absorption lines in a composite spectrum. We find that νmax monotonically increases from z ∼ 0 to 6 and that νmax tightly correlates with the halo circular velocity estimated from the stellar mass.
AB - We present a velocity of galactic outflows in star-forming galaxies at the highest redshift, z ∼ 6, so far studied with metal absorption lines. Absorption-line studies of galactic outflows need well-determined redshifts, but there are few strong emission lines in the observed-frame optical spectra of galaxies at high redshifts. In this work, we use the systemic redshifts determined by the ALMA [CII]158 μm emission lines. The sample consists of seven Lyman break galaxies at 5.1 < z < 5.7 whose Keck/DEIMOS and ALMA data are available in the archive. The outflow maximum velocity (νmax) is estimated by a fitting of line profiles to metal absorption lines in a composite spectrum. We find that νmax monotonically increases from z ∼ 0 to 6 and that νmax tightly correlates with the halo circular velocity estimated from the stellar mass.
KW - galaxies: evolution
KW - galaxies: high-redshift
KW - galaxies: kinematics and dynamics
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U2 - 10.1017/S1743921319002126
DO - 10.1017/S1743921319002126
M3 - Article
AN - SCOPUS:85106792583
SN - 1743-9213
VL - 15
SP - 307
EP - 308
JO - Proceedings of the International Astronomical Union
JF - Proceedings of the International Astronomical Union
IS - S341
ER -