2016A&A...596A..97D


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.10CEST12:44:53

2016A&A...596A..97D - Astronomy and Astrophysics, volume 596A, 97-97 (2016/12-1)

Dust-depletion sequences in damped Lyman-α absorbers. A unified picture from low-metallicity systems to the Galaxy.

DE CIA A., LEDOUX C., MATTSSON L., PETITJEAN P., SRIANAND R., GAVIGNAUD I. and JENKINS E.B.

Abstract (from CDS):

We study metal depletion due to dust in the interstellar medium (ISM) to infer the properties of dust grains and characterize the metal and dust content of galaxies down to low metallicity and intermediate redshift z. We provide metal column densities and abundances of a sample of 70 damped Lyman-α absorbers (DLAs) towards quasars, observed at high spectral resolution with the Very Large Telescope (VLT) Ultraviolet and Visual Echelle Spectrograph (UVES). This is the largest sample of phosphorus abundances measured in DLAs so far. We use literature measurements for Galactic clouds to cover the high-metallicity end. We discover tight (scatter ≲0.2dex) correlations between [Zn/Fe] and the observed relative abundances from dust depletion. This implies that grain growth in the ISM is an important process of dust production. These sequences are continuous in [Zn/Fe] from dust-free to dusty DLAs, and to Galactic clouds, suggesting that the availability of refractory metals in the ISM is crucial for dust production, regardless of the star formation history. We observe [S/Zn] up to ∼0.25dex in DLAs, which is broadly consistent with Galactic stellar abundances. Furthermore, we find a good agreement between the nucleosynthetic pattern of Galactic halo stars and our observations of the least dusty DLAs. This supports recent star formation in low-metallicity DLAs. The derived depletions of Zn, O, P, S, Si, Mg, Mn, Cr, and Fe correlate with [Zn/Fe], with steeper slopes for more refractory elements. P is mostly not affected by dust depletion. We present canonical depletion patterns to be used as reference in future studies of relative abundances and depletion. We derive the total (dust-corrected) metallicity, typically -2≲[M/H]tot≲0 for DLAs, and scattered around solar metallicity for the Galactic ISM. The dust-to-metal ratio (DTM) increases with metallicity, again supporting the importance of grain growth for dust production. The dust extinction AV derived from the depletion is typically <0.2mag in DLAs. Finally, we derive elemental abundances in dust, which is key to understanding the dust composition and its evolution. We observe similar abundances of Mg, Si, and Fe in dust; this suggests that grain species such as pyroxenes and iron oxides are more important than olivine, but this needs to be confirmed by more detailed analysis. Overall, we characterize dust depletion, nucleosynthesis, and dust-corrected metallicity in DLAs, providing a unified picture from low-metallicity systems to the Galactic ISM.

Abstract Copyright: © ESO, 2016

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

Simbad objects: 56

goto Full paper

goto View the reference in ADS

Number of rows : 56

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 LBQS 2359-0216B QSO 00 01 49.9513547244 -01 59 39.452930483   18 18.0     ~ 92 0
2 QSO J0003-2603 QSO 00 03 22.9530051057 -26 03 18.306624161   18 17.53     ~ 272 0
3 LBQS 0010-0012 QSO 00 13 06.1513833715 +00 04 31.945146837   19.29 19.05     ~ 85 0
4 LBQS 0013-0029 QSO 00 16 02.4050445836 -00 12 25.076529860   18.67 18.36     ~ 175 0
5 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 9446 1
6 QSO B0058-292 QSO 01 01 04.6492810170 -28 58 01.683361609     18.7     ~ 38 0
7 PHL 957 QSO 01 03 11.2740814277 +13 16 17.810502093   16.97 16.57     ~ 327 0
8 QSO J0105-1846 QSO 01 05 16.7912539296 -18 46 41.986608187     18.3     ~ 72 0
9 QSO B0112+03 QSO 01 14 53.227 +03 14 56.98     18.6     ~ 57 2
10 QSO B0112-30 QSO 01 15 04.8737306476 -30 25 14.963003446           ~ 44 1
11 QSO J0137-2707 QSO 01 37 54.5554749127 -27 07 36.617810426   18.6       ~ 21 0
12 QSO B0216+0803 QSO 02 18 57.3583341300 +08 17 27.351147286     18.1     ~ 87 0
13 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 5669 1
14 QSO B0336-017 QSO 03 39 00.9861020 -01 33 17.606671   20.1 19.1 18.8   ~ 101 2
15 QSO B0347-383 QSO 03 49 43.6605705480 -38 10 30.834942758     17.3     ~ 176 0
16 QSO J0407-4410 QSO 04 07 18.0882243903 -44 10 13.989443935   17.6 17.6     ~ 82 1
17 QSO B0450-1310 QSO 04 53 13.5743802506 -13 05 55.082840035   13.2 16.5     ~ 86 2
18 4C -02.19 QSO 05 01 12.80988366 -01 59 14.2562534   19.1 18.4 19.04   ~ 518 1
19 SK -70 69 * 05 05 18.6719268373 -70 25 49.876064190 12.586 13.616 13.854   14.074 O3V(f) 38 0
20 HD 269357 * 05 18 59.4794403994 -69 12 54.800414116   11.89 12.10     O6Ib(f) 50 0
21 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 14832 1
22 QSO B0528-2505 QSO 05 30 07.96279681 -25 03 29.8994010   18.17 17.34 17.7   ~ 393 0
23 QSO B0551-36 QSO 05 52 46.1825351739 -36 37 27.606597529   17.72 17.57     ~ 84 0
24 QSO B0841+129 BLL 08 44 24.2446850407 +12 45 46.527740081   18.28 18.5     ~ 105 0
25 QSO B0913+0715 QSO 09 16 13.9617253427 +07 02 24.488538434     17.1     ~ 93 0
26 2QZ J101018.2+000350 QSO 10 10 18.1900018291 +00 03 51.270617654   18.80 18.54     ~ 41 0
27 QSO B1036-2257 QSO 10 39 09.5073121205 -23 13 26.400097195   18.0 18.0     ~ 38 0
28 QSO B1108-07 QSO 11 11 13.600 -08 04 02.00     18.10     ~ 58 0
29 QSO J1113-1533 QSO 11 13 50.6115308594 -15 33 34.006285026   18.7 18.7     ~ 27 0
30 QSO B1117-1329 QSO 11 20 10.3169512408 -13 46 25.945122237     18.00     ~ 47 0
31 QSO B1157+014 QSO 11 59 44.8277890111 +01 12 06.984367162   17.87 17.52     ~ 199 1
32 QSO B1209+0919 QSO 12 11 34.9529988214 +09 02 20.851330054   19.61 19.15     ~ 91 0
33 LBQS 1210+1731 QSO 12 13 03.0132688253 +17 14 23.238685675   18.21 18.03     ~ 75 0
34 LBQS 1223+1753 QSO 12 26 07.1942805357 +17 36 49.926547912   18.93 18.59     ~ 97 0
35 LBQS 1232+0815 QSO 12 34 37.5507010309 +07 58 43.372966617     18.4     ~ 112 0
36 QSO B1331+170 QSO 13 33 35.7826224 +16 49 04.014213   16.84 16.71 16.41   ~ 409 1
37 QSO B1337+11 QSO 13 40 02.5420534525 +11 06 30.176749720     18.7     ~ 103 0
38 QSO J1342-1355 QSO 13 42 58.8724264812 -13 55 59.811090379   19.2 19.2     ~ 20 0
39 QSO B1409+0930 QSO 14 12 17.2932265263 +09 16 24.702976948     18.6     ~ 54 0
40 QSO J1443+2724 QSO 14 43 31.1702656971 +27 24 36.772847043     19.3     ~ 72 0
41 LBQS 1444+0126 QSO 14 46 53.0500684156 +01 13 55.922982686   18.71 18.38     ~ 56 0
42 QSO B1451+123 QSO 14 54 18.5816006547 +12 10 53.905442682     18.6     ~ 74 0
43 QSO B2059-360 QSO 21 02 44.6075037386 -35 53 07.084123633   19.18 18.62     ~ 52 0
44 QSO J2119-3536 QSO 21 19 27.6059088002 -35 37 40.546882117   17.50 17.35     ~ 41 0
45 LBQS 2138-4427 QSO 21 41 59.5010115549 -44 13 25.925906956   19.17 18.20     ~ 60 1
46 QSO J2155+1358 QSO 21 55 01.998 +13 58 25.64     18.00     ~ 40 0
47 LBQS 2206-1958A QSO 22 08 52.0727351941 -19 43 59.869072347   17.49 17.33     ~ 200 0
48 LBQS 2230+0232 QSO 22 32 35.2155602853 +02 47 55.814661874   18.387 18.038     ~ 86 0
49 LBQS 2230-0015 QSO 22 34 08.9971883754 +00 00 01.695912538   18.09 17.39 17.3   ~ 110 0
50 QSO J2246-6015 QSO 22 47 08.9261267635 -60 15 45.301367673           ~ 58 0
51 QSO B2332-094 QSO 23 34 46.4052372832 -09 08 12.240476964   19.21 18.62 18.07   ~ 69 0
52 QSO B2343+125 QSO 23 46 28.200 +12 49 00.00     17.5     ~ 121 2
53 QSO B2344+125 QSO 23 46 32.80 +12 45 40.0     17.0     ~ 80 1
54 QSO B2348-0108 QSO 23 50 57.8764286186 -00 52 09.892906411   19.23 18.77 18.7   ~ 133 0
55 QSO B2348-147 QSO 23 51 29.8151829970 -14 27 56.845507757     16.9     ~ 70 1
56 NAME Galactic Bulge reg ~ ~           ~ 3391 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2016A&A...596A..97D and select 'bookmark this link' or equivalent in the popup menu


2020.07.10-12:44:53

© Université de Strasbourg/CNRS

    • Contact