The dominant origin of diffuse Ly alpha halos around Ly alpha emitters explored by spectral energy distribution fitting and clustering analysis

Haruka Kusakabe; Kazuhiro Shimasaku; Rieko Momose; Masami Ouchi; Kimihiko Nakajima; Takuya Hashimoto; Yuichi Harikane; John D. Silverman; Peter L. Capak

doi:10.1093/pasj/psz029

The dominant origin of diffuse Ly alpha halos around Ly alpha emitters explored by spectral energy distribution fitting and clustering analysis

Haruka Kusakabe, Kazuhiro Shimasaku, Rieko Momose, Masami Ouchi, Kimihiko Nakajima, Takuya Hashimoto, Yuichi Harikane, John D. Silverman, Peter L. Capak

5 Citations (Scopus)

Abstract

The physical origin of diffuse Lyα halos (LAHs) around star-forming galaxies is still a matter of debate. We present the dependence of LAH luminosity [L(Lyα)_H] on the stellar mass (M), star formation rate, color excess [E(B − V)], and dark matter halo mass (M_h) of the parent galaxy for ∼900 Lyα emitters (LAEs) at z ∼ 2 divided into ten subsamples. We calculate L(Lyα)_H using the stacked observational relation between L(Lyα)_H and central Lyα luminosity of Momose et al. (2016, MNRAS, 457, 2318), which we find agrees with the average trend of VLT/MUSE-detected individual LAEs. We find that our LAEs have relatively high L(Lyα)_H despite low M and M_h, and that L(Lyα)_H remains almost unchanged with M and perhaps with M_h.

Original language	English
Article number	55
Journal	Publications of the Astronomical Society of Japan
Volume	71
Issue number	3
Number of pages	34
ISSN	0004-6264
DOIs	https://doi.org/10.1093/pasj/psz029
Publication status	Published - 1 Jun 2019

Keywords

galaxies: halos
galaxies: high-redshift
galaxies: star formation
intergalactic medium

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10.1093/pasj/psz029

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Kusakabe, H., Shimasaku, K., Momose, R., Ouchi, M., Nakajima, K., Hashimoto, T., Harikane, Y., Silverman, J. D., & Capak, P. L. (2019). The dominant origin of diffuse Ly alpha halos around Ly alpha emitters explored by spectral energy distribution fitting and clustering analysis. Publications of the Astronomical Society of Japan, 71(3), [55]. https://doi.org/10.1093/pasj/psz029

The dominant origin of diffuse Ly alpha halos around Ly alpha emitters explored by spectral energy distribution fitting and clustering analysis. / Kusakabe, Haruka; Shimasaku, Kazuhiro; Momose, Rieko et al.

In: Publications of the Astronomical Society of Japan, Vol. 71, No. 3, 55, 01.06.2019.

Research output: Contribution to journal › Journal article › Research › peer-review

Kusakabe, H, Shimasaku, K, Momose, R, Ouchi, M, Nakajima, K, Hashimoto, T, Harikane, Y, Silverman, JD & Capak, PL 2019, 'The dominant origin of diffuse Ly alpha halos around Ly alpha emitters explored by spectral energy distribution fitting and clustering analysis', Publications of the Astronomical Society of Japan, vol. 71, no. 3, 55. https://doi.org/10.1093/pasj/psz029

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title = "The dominant origin of diffuse Ly alpha halos around Ly alpha emitters explored by spectral energy distribution fitting and clustering analysis",

abstract = "The physical origin of diffuse Lyα halos (LAHs) around star-forming galaxies is still a matter of debate. We present the dependence of LAH luminosity [L(Lyα)H] on the stellar mass (M), star formation rate, color excess [E(B − V)], and dark matter halo mass (Mh) of the parent galaxy for ∼900 Lyα emitters (LAEs) at z ∼ 2 divided into ten subsamples. We calculate L(Lyα)H using the stacked observational relation between L(Lyα)H and central Lyα luminosity of Momose et al. (2016, MNRAS, 457, 2318), which we find agrees with the average trend of VLT/MUSE-detected individual LAEs. We find that our LAEs have relatively high L(Lyα)H despite low M and Mh, and that L(Lyα)H remains almost unchanged with M and perhaps with Mh.",

keywords = "galaxies: halos, galaxies: high-redshift, galaxies: star formation, intergalactic medium",

author = "Haruka Kusakabe and Kazuhiro Shimasaku and Rieko Momose and Masami Ouchi and Kimihiko Nakajima and Takuya Hashimoto and Yuichi Harikane and Silverman, {John D.} and Capak, {Peter L.}",

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T1 - The dominant origin of diffuse Ly alpha halos around Ly alpha emitters explored by spectral energy distribution fitting and clustering analysis

AU - Kusakabe, Haruka

AU - Shimasaku, Kazuhiro

AU - Momose, Rieko

AU - Ouchi, Masami

AU - Nakajima, Kimihiko

AU - Hashimoto, Takuya

AU - Harikane, Yuichi

AU - Silverman, John D.

AU - Capak, Peter L.

PY - 2019/6/1

Y1 - 2019/6/1

N2 - The physical origin of diffuse Lyα halos (LAHs) around star-forming galaxies is still a matter of debate. We present the dependence of LAH luminosity [L(Lyα)H] on the stellar mass (M), star formation rate, color excess [E(B − V)], and dark matter halo mass (Mh) of the parent galaxy for ∼900 Lyα emitters (LAEs) at z ∼ 2 divided into ten subsamples. We calculate L(Lyα)H using the stacked observational relation between L(Lyα)H and central Lyα luminosity of Momose et al. (2016, MNRAS, 457, 2318), which we find agrees with the average trend of VLT/MUSE-detected individual LAEs. We find that our LAEs have relatively high L(Lyα)H despite low M and Mh, and that L(Lyα)H remains almost unchanged with M and perhaps with Mh.

AB - The physical origin of diffuse Lyα halos (LAHs) around star-forming galaxies is still a matter of debate. We present the dependence of LAH luminosity [L(Lyα)H] on the stellar mass (M), star formation rate, color excess [E(B − V)], and dark matter halo mass (Mh) of the parent galaxy for ∼900 Lyα emitters (LAEs) at z ∼ 2 divided into ten subsamples. We calculate L(Lyα)H using the stacked observational relation between L(Lyα)H and central Lyα luminosity of Momose et al. (2016, MNRAS, 457, 2318), which we find agrees with the average trend of VLT/MUSE-detected individual LAEs. We find that our LAEs have relatively high L(Lyα)H despite low M and Mh, and that L(Lyα)H remains almost unchanged with M and perhaps with Mh.

KW - galaxies: halos

KW - galaxies: high-redshift

KW - galaxies: star formation

KW - intergalactic medium

U2 - 10.1093/pasj/psz029

DO - 10.1093/pasj/psz029

M3 - Journal article

SN - 0004-6264

VL - 71

JO - Publication of the Astronomical Society of Japan

JF - Publication of the Astronomical Society of Japan

IS - 3

M1 - 55

ER -

The dominant origin of diffuse Ly alpha halos around Ly alpha emitters explored by spectral energy distribution fitting and clustering analysis

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Keywords

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