Extinction curves expected in young galaxies

Hirashita, Hiroyuki; Nozawa, Takaya; Kozasa, Takashi; Ishii, Takako T.; Takeuchi, Tsutomu T.

Extinction curves expected in young galaxies

Hirashita, Hiroyuki; Nozawa, Takaya; Kozasa, Takashi et al.

Monthly Notices of the Royal Astronomical Society, 2005, 357(3), 1077-1087

Permalink : https://hdl.handle.net/2115/42830

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アクセス権	open access
URI	https://hdl.handle.net/2115/42830
タイトル	Extinction curves expected in young galaxies
著者	Hirashita, Hiroyuki ; Nozawa, Takaya ; Kozasa, Takashi ; Ishii, Takako T. ; Takeuchi, Tsutomu T.
著者名 Hirashita, Hiroyuki
著者名 Nozawa, Takaya
e-Rad_Researcher 90263368 著者名 Kozasa, Takashi
著者名 Ishii, Takako T.
著者名 Takeuchi, Tsutomu T.
言語	英語
キーワード	supernovae: general
	dust, extinction
	galaxies: evolution
	galaxies: highredshift
	galaxies: ISM
	quasars: individual: SDSS J104845.05+463718.3
発行日	2005-03
出版者	Blackwell Publishing
収録物名	Monthly Notices of the Royal Astronomical Society
巻(号)	357(3)
ページ	1077-1087
抄録	We investigate the extinction curves of young galaxies in which dust is supplied from Type II supernovae (SNe II) and/or pair instability supernovae (PISNe). We adopt Nozawa et al. (2003) for compositions and size distribution of grains formed in SNe II and PISNe. We find that the extinction curve is quite sensitive to internal metal mixing in supernovae (SNe). The extinction curves predicted from the mixed SNe are dominated by SiO2 and are characterized by a steep rise from infrared to ultraviolet (UV). The dust from unmixed SNe shows a shallower extinction curve, because of the contribution from large-sized (∼0.1 μm) Si grains. However, the progenitor mass is important in unmixed SNe II: if the progenitor mass is smaller than ∼20 M⊙, the extinction curve is flat in UV; otherwise, the extinction curve rises towards the short wavelength. The extinction curve observed in a high-redshift quasar (z = 6.2) favours the dust production by unmixed SNe II. We also provide some useful observational quantities, so that our model might be compared with future high-z extinction curves.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
権利情報	The definitive version is available at www.blackwell-synergy.com
PISSN	0035-8711
EISSN	1365-2966
NCID	AA10528285
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.1111/j.1365-2966.2005.08730.x