2019A&A...624L..13L


C.D.S. - SIMBAD4 rel 1.7 - 2020.11.29CET01:07:00

2019A&A...624L..13L - Astronomy and Astrophysics, volume 624, L13-13 (2019/4-1)

Dust production scenarios in galaxies at z ∼6-8.3.

LESNIEWSKA A. and MICHALOWSKI M.J.

Abstract (from CDS):


Context. The mechanism of dust formation in galaxies at high redshift is still unknown. Asymptotic giant branch (AGB) stars and explosions of supernovae (SNe) are possible dust producers, and non-stellar processes may substantially contribute to dust production, for example grain growth in the interstellar medium.
Aims. Our aim is to determine the contribution to dust production of AGB stars and SNe in nine galaxies at z∼6-8.3, for which observations of dust have been recently attempted.
Methods. In order to determine the origin of the observed dust we have determined dust yields per AGB star and SN required to explain the total amounts of dust in these galaxies.
Results. We find that AGB stars were not able to produce the amounts of dust observed in the galaxies in our sample. In order to explain these dust masses, SNe would have to have maximum efficiency and not destroy the dust which they formed.
Conclusions. Therefore, the observed amounts of dust in the galaxies in the early universe were formed either by efficient supernovae or by a non-stellar mechanism, for instance the grain growth in the interstellar medium.

Abstract Copyright: © ESO 2019

Journal keyword(s): stars: AGB and post-AGB - supernovae: general - dust, extinction - galaxies: high-redshift - galaxies: ISM - quasars: general

Simbad objects: 14

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Number of rows : 14

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 [ARK2015] 4886 LeG 00 14 24.927 -30 22 56.15           ~ 37 0
2 NAME Himiko EmG 02 17 57.6122 -05 08 44.898           ~ 89 0
3 NAME SXDSF reg 02 18 00 -05 00.0           ~ 192 1
4 [SKO2012] SXDF-NB1006-2 G 02 18 56.536 -05 19 58.92           ~ 20 0
5 SPT-S J031132-5823.4 G 03 11 33.142 -58 23 33.37           ~ 11 0
6 [BCM2019b] 126 G 04 16 09.401 -24 05 35.47         28.96 ~ 22 0
7 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 15060 1
8 SN 1987A SN* 05 35 28.020 -69 16 11.07           SNIIpec 4534 2
9 H-ATLAS J090045.4+004125 G 09 00 45.8 +00 41 23           ~ 10 0
10 HSC J100058+014815 EmG 10 00 58.01 +01 48 15.6           ~ 66 0
11 SDSS J104845.05+463718.3 QSO 10 48 45.058 +46 37 18.38   25.87 24.76     ~ 117 0
12 SDSS J114816.64+525150.3 QSO 11 48 16.647 +52 51 50.31   25.73 25.04     ~ 399 0
13 QSO J1342+0928 QSO 13 42 08.097 +09 28 38.28           ~ 66 0
14 SDSS J205406.49-000514.5 QSO 20 54 06.494 -00 05 14.57           ~ 54 0

    Equat.    Gal    SGal    Ecl

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2020.11.29-01:07:00

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