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Table 6

Magnesium abundances collected from the literature.

N (item) [X/Y]a Value Reference Comments
(1) (2) (3) (4) (5) (6)
1 [Mg/H]c −1.22 1 Cold Galactic clouds
2 [Mg/H]c −0.62 1 Warm Galactic clouds
3 [Mg/O] −1.00 1 Cold Galactic clouds
4 [Mg/O] −0.40 1 Warm Galactic clouds
5 [Mg/H]c −0.37 1 Weaker low-velocity (WLV) absorption of interstellar clouds toward 23 Ori (HST)
6 [Mg/H]c −0.74 1 Strong low-velocity (SLV) absorption in H ii gas toward 23 Ori (HST)
7 [Mg/S] −0.51 1 WLV absorption of interstellar clouds toward 23 Ori (HST)
8 [Mg/S] −0.89 1 SLV absorption in H ii gas toward 23 Ori (HST)
9 [Mg/H]c −0.46 2 Mean value of ISM toward 70 early type stars (Copernicus)
10 [Mg/H]c −0.24 3 Interstellar cloud A in the direction of ζ Oph
LISMb 11 [Mg/H] −0.90 3 Interstellar cloud B in the direction of ζ Oph
12 [Mg/O] −0.48 3 ISM, A component in the direction of ζ Oph
13 [Mg/O] −0.69 3 ISM, B component in the direction of ζ Oph
14 [Mg/O] −1.21 4 α CMa A, 1st component of LISM within 100 pc (HST)
15 [Mg/O] −0.61 4 α CMa A, 2nd component of LISM within 100 pc (HST)
16 [Mg/O] −0.89 4 G191-B2B 1st component of LISM within 100 pc (HST)
17 [Mg/O] +0.28 4 G191-B2B 2nd component of LISM within 100 pc (HST)
18 [Mg/O] −0.46 4 Weighted mean of LISM within 100 pc (HST)
19 [Mg/H]c −0.9 5 ζ Pyx (observations of ISM toward 8 cool (G4-K0) giants, IUE)
20 [Mg/H]c −0.9 5 HD 81101 (IUE)
21 [Mg/H]c −0.8 5 ζ Vol, 1st component (IUE)
22 [Mg/H]c −0.9 5 ζ Vol, 2nd component (IUE)
23 [Mg/H]c +0.023 6 averaged values for 25 planetary nabulae (PNe), Mg ii λ4481
24 [Mg/H]c 0.0 7 planetary nebula IC 418, (IUE), Mg ii λλ2797, 2803
PNed 25 [Mg/H]c −1.1 7 planetary nebula NGC 2440, (IUE), Mg ii λλ2797, 2803
26 [Mg/H]c −0.64 7 planetary nebula IC 4997, (IUE), Mg ii λλ2797, 2803
27 [Mg/O]e −0.94 8 Mg ii λ4481 line, based on observation of Orion by Esteban et al. (2004)
H ii 28 [Mg/O] −1.00 8 Mg ii λ4481 line, based on observation of Orion by Esteban et al. (2004)
regions 29 [Mg/O] −0.35 8 30 Dor, based on Mg ii λ4481 and Mg i λλ4561, 4571
30 [Mg/O]f −0.67 8 30 Dor, based on Mg ii λ4481 and Mg i λλ4561, 4571
31 [Mg/S]g −0.09 9 gas-phase abundances obtained in absorption system along the GRB HG 050820
32 [Mg/S] −0.18 9 absorption system toward the GRB HG 050820
33 [Mg/S] 0.0 10 absorption system toward the Q 0100+13 (zabs = 2.309)
QSO- 34 [Mg/S] −0.04 11 absorption system toward the Q B0841+129 (zDLA = 2.375)
-DLA- 35 [Mg/S] +0.03 11 absorption system toward the Q B0841+129 (zDLA = 2.476)
-GRB 36 [Mg/S] −0.07 12 absorption system toward the Q 1101–264 (zabs = 1.838)
37 [Mg/S] −0.04 13 mean value for absorption system toward the Q 1331+17 (zabs = 1.776)
38 [Mg/S] +0.13 14 data for ~85 DLA systems (Keck spectra) FJ 0812+32 (zabs = 2.6263)
39 [Mg/S] −0.49 14 data for ~85 DLA systems (Keck spectra) J 0900+42 (zabs = 3.2458)

Notes.

(a)

All data were recalculated with solar abundances by Asplund et al. (2009).

(b)

Local interstellar medium.

(c)

The solar abundance pattern is adopted for the local interstellar medium.

(d)

Planetary nebulae.

(e)

Adopted solar vicinity ISM abundances, average from B stars and solar neighbourhood abundances corrected for Galactic chemical evolution since the Sun was formed (Peimbert & Peimbert 2010).

(f)

Adopted abundances by Tsamis & Péquignot (2005).

(g)

Solar abundances by Asplund et al. (2005) are assumed, following Prochaska et al. (2007a).

Reference. [1] Welty et al. (1999); [2] Murray (1983); [3] Savage et al. (1992); [4] Redfield & Linsky (2004); [5] Molaro et al. (1986); [6] Dinerstein et al. (2012); [7] Middlemass (1988); [8] Peimbert & Peimbert (2010); [9] Prochaska et al. (2007a); [10] Dessauges-Zavadsky et al. (2004); [11] Dessauges-Zavadsky et al. (2007); [12] Dessauges-Zavadsky et al. (2003); [13] Dessauges-Zavadsky et al. (2006); [14] Prochaska et al. (2007b).

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