2011A&A...530A..44J


Query : 2011A&A...530A..44J

2011A&A...530A..44J - Astronomy and Astrophysics, volume 530A, 44-44 (2011/6-1)

Dust destruction in the ISM: a re-evaluation of dust lifetimes.

JONES A.P. and NUTH III J.A.

Abstract (from CDS):

There is a long-standing conundrum in interstellar dust studies relating to the discrepancy between the time-scales for dust formation from evolved stars and the apparently more rapid destruction in supernova-generated shock waves. We re-examine some of the key issues relating to dust evolution and processing in the interstellar medium. We use recent and new constraints from observations, experiments, modelling and theory to re-evaluate dust formation in the interstellar medium (ISM). We find that the discrepancy between the dust formation and destruction time-scales may not be as significant as has previously been assumed because of the very large uncertainties involved. The derived silicate dust lifetime could be compatible with its injection time-scale, given the inherent uncertainties in the dust lifetime calculation. The apparent need to re-form significant quantities of silicate dust in the tenuous interstellar medium may therefore not be a strong requirement. Carbonaceous matter, on the other hand, appears to be rapidly recycled in the ISM and, in contrast to silicates, there are viable mechanisms for its re-formation in the ISM.

Abstract Copyright:

Journal keyword(s): ISM: abundances - dust, extinction

Simbad objects: 8

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Number of rows : 8
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 M 77 GiP 02 42 40.7091669408 -00 00 47.859690204 9.70 9.61 8.87 10.1 9.9 ~ 4323 2
2 RAFGL 618 pA* 04 42 53.6242032600 +36 06 53.400902220   16.32   12.59   C-rich 981 0
3 * zet Ori ** 05 40 45.52666 -01 56 33.2649 0.50 1.56 1.77 1.85 2.05 O9.7Ib+B0III 341 0
4 IRC +10216 C* 09 47 57.40632 +13 16 43.5648     10.96     C9,5e 2239 0
5 M 82 IG 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 5583 6
6 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 12906 0
7 NAME Stephan's Quintet CGG 22 35 57.5 +33 57 36           ~ 396 1
8 NAME Local Bubble ISM ~ ~           ~ 781 0

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2022.05.24-10:20:55

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