Dust evolution in galaxies at z > 7

Tsutomu T. Takeuchi; Ryosuke S. Asano; Sayaka Nagasaki; Takaya Nozawa; Yoichi Tamura; Ken Mawatari; Akio K. Inoue

doi:10.1017/S1743921319003107

Dust evolution in galaxies at z > 7

Tsutomu T. Takeuchi^*, Ryosuke S. Asano, Sayaka Nagasaki, Takaya Nozawa, Yoichi Tamura, Ken Mawatari, Akio K. Inoue

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

Recently huge amount of dust Mdust ≃ 10^6-7M in galaxies at z = 7-8 has been discovered by ALMA observations. The suggested timescale of the dust production was a few-several×10⁸ yr, while the stellar mass was several × 10⁹M . This amount of dust cannot be easily explained only by a supply from supernovae if we consider the dust destruction by reverse shocks. We propose that these values can be consistently explained if we take into account the grain growth in the interstellar medium (ISM). This scenario successfully reproduces the evolution of the dust mass, as well as the SFR, and stellar mass simultaneously. We conclude that even at such an early epoch of the Universe, the dust grain growth in the ISM plays a significant role in galaxies.

Original language	English
Pages (from-to)	312-313
Number of pages	2
Journal	Proceedings of the International Astronomical Union
Volume	15
Issue number	S341
DOIs	https://doi.org/10.1017/S1743921319003107
Publication status	Published - 2019
Externally published	Yes

Keywords

dust
galaxies: evolution
galaxies: formation
stars: formation

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

Access to Document

10.1017/S1743921319003107

Cite this

@article{3766cd50c7544fcab3be72545cc14f3f,

title = "Dust evolution in galaxies at z > 7",

abstract = "Recently huge amount of dust Mdust ≃ 106-7M in galaxies at z = 7-8 has been discovered by ALMA observations. The suggested timescale of the dust production was a few-several×108 yr, while the stellar mass was several × 109M . This amount of dust cannot be easily explained only by a supply from supernovae if we consider the dust destruction by reverse shocks. We propose that these values can be consistently explained if we take into account the grain growth in the interstellar medium (ISM). This scenario successfully reproduces the evolution of the dust mass, as well as the SFR, and stellar mass simultaneously. We conclude that even at such an early epoch of the Universe, the dust grain growth in the ISM plays a significant role in galaxies.",

keywords = "dust, galaxies: evolution, galaxies: formation, stars: formation",

author = "Takeuchi, {Tsutomu T.} and Asano, {Ryosuke S.} and Sayaka Nagasaki and Takaya Nozawa and Yoichi Tamura and Ken Mawatari and Inoue, {Akio K.}",

note = "Publisher Copyright: {\textcopyright} International Astronomical Union 2020.",

year = "2019",

doi = "10.1017/S1743921319003107",

language = "English",

volume = "15",

pages = "312--313",

journal = "Proceedings of the International Astronomical Union",

issn = "1743-9213",

publisher = "Cambridge University Press",

number = "S341",

}

TY - JOUR

T1 - Dust evolution in galaxies at z > 7

AU - Takeuchi, Tsutomu T.

AU - Asano, Ryosuke S.

AU - Nagasaki, Sayaka

AU - Nozawa, Takaya

AU - Tamura, Yoichi

AU - Mawatari, Ken

AU - Inoue, Akio K.

N1 - Publisher Copyright: © International Astronomical Union 2020.

PY - 2019

Y1 - 2019

N2 - Recently huge amount of dust Mdust ≃ 106-7M in galaxies at z = 7-8 has been discovered by ALMA observations. The suggested timescale of the dust production was a few-several×108 yr, while the stellar mass was several × 109M . This amount of dust cannot be easily explained only by a supply from supernovae if we consider the dust destruction by reverse shocks. We propose that these values can be consistently explained if we take into account the grain growth in the interstellar medium (ISM). This scenario successfully reproduces the evolution of the dust mass, as well as the SFR, and stellar mass simultaneously. We conclude that even at such an early epoch of the Universe, the dust grain growth in the ISM plays a significant role in galaxies.

AB - Recently huge amount of dust Mdust ≃ 106-7M in galaxies at z = 7-8 has been discovered by ALMA observations. The suggested timescale of the dust production was a few-several×108 yr, while the stellar mass was several × 109M . This amount of dust cannot be easily explained only by a supply from supernovae if we consider the dust destruction by reverse shocks. We propose that these values can be consistently explained if we take into account the grain growth in the interstellar medium (ISM). This scenario successfully reproduces the evolution of the dust mass, as well as the SFR, and stellar mass simultaneously. We conclude that even at such an early epoch of the Universe, the dust grain growth in the ISM plays a significant role in galaxies.

KW - dust

KW - galaxies: evolution

KW - galaxies: formation

KW - stars: formation

UR - http://www.scopus.com/inward/record.url?scp=85106779903&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85106779903&partnerID=8YFLogxK

U2 - 10.1017/S1743921319003107

DO - 10.1017/S1743921319003107

M3 - Article

AN - SCOPUS:85106779903

SN - 1743-9213

VL - 15

SP - 312

EP - 313

JO - Proceedings of the International Astronomical Union

JF - Proceedings of the International Astronomical Union

IS - S341

ER -

Dust evolution in galaxies at z > 7

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this