2010A&A...522A..15M


C.D.S. - SIMBAD4 rel 1.7 - 2021.02.27CET12:55:17

2010A&A...522A..15M - Astronomy and Astrophysics, volume 522, A15-15 (2010/11-1)

Dust grain growth in the interstellar medium of 5 < z < 6.5 quasars.

MICHALOWSKI M.J., MURPHY E.J., HJORTH J., WATSON D., GALL C. and DUNLOP J.S.

Abstract (from CDS):

We investigate whether stellar dust sources i.e. asymptotic giant branch (AGB) stars and supernovae (SNe) can account for dust detected in 5<z<6.5 quasars (QSOs). We calculate the required dust yields per AGB star and per SN using the dust masses of QSOs inferred from their millimeter emission and stellar masses approximated as the difference between the dynamical and the H2 gas masses of these objects. We find that AGB stars are not efficient enough to form dust in the majority of the z>5 QSOs, whereas SNe may be able to account for dust in some QSOs. However, they require very high dust yields even for a top-heavy initial mass function. This suggests additional non-stellar dust formation mechanism e.g. significant dust grain growth in the interstellar medium of at least three out of nine z>5 QSOs. SNe (but not AGB stars) may deliver enough heavy elements to fuel this growth.

Abstract Copyright:

Journal keyword(s): dust, extinction - galaxies: high-redshift - galaxies: ISM - submillimeter: galaxies - quasars: general

Simbad objects: 11

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Number of rows : 11

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 QSO J0338+0021 QSO 03 38 29.3152522955 +00 21 56.242586538   25.10 23.26     ~ 88 0
2 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 15196 1
3 SDSS J084035.08+562419.7 QSO 08 40 35.08848 +56 24 19.7712   24.95 23.93     ~ 43 0
4 SDSS J092721.82+200123.7 QSO 09 27 21.821 +20 01 23.63   24.97 23.89     ~ 52 0
5 SDSS J104433.04-012502.0 QSO 10 44 33.044 -01 25 02.07     21.81     ~ 155 1
6 SDSS J104845.05+463718.3 QSO 10 48 45.058 +46 37 18.38   25.87 24.76     ~ 117 0
7 SDSS J114816.64+525150.3 QSO 11 48 16.647 +52 51 50.31   25.73 25.04     ~ 404 0
8 QSO J1335+3533 QSO 13 35 50.809 +35 33 15.80   23.29 22.22     ~ 42 0
9 QSO J1425+3254 QSO 14 25 16.32672 +32 54 09.6768       23.76 21.15 ~ 21 0
10 SDSS J205406.49-000514.5 QSO 20 54 06.494 -00 05 14.57           ~ 57 0
11 NAME Cas A SNR 23 23 24.000 +58 48 54.00     14.30     ~ 2471 1

    Equat.    Gal    SGal    Ecl

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2021.02.27-12:55:17

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