2004ApJ...609..838W


C.D.S. - SIMBAD4 rel 1.7 - 2021.05.18CEST15:58:09

2004ApJ...609..838W - Astrophys. J., 609, 838-853 (2004/July-2)

Two new low galactic D/H measurements from the Far Ultraviolet Spectroscopic Explorer.

WOOD B.E., LINSKY J.L., HEBRARD G., WILLIGER G.M., MOOS H.W. and BLAIR W.P.

Abstract (from CDS):

We analyze interstellar absorption observed toward two subdwarf O stars, JL 9 and LS 1274, using spectra taken by the Far Ultraviolet Spectroscopic Explorer (FUSE). Column densities are measured for many atomic and molecular species (H I, D I, C I, N I, O I, P II, Ar I, Fe II, and H2), but our main focus is on measuring the D/H ratios for these extended lines of sight, as D/H is an important diagnostic for both cosmology and Galactic chemical evolution. We find D/H=(1.00±0.37)x10–5 toward JL 9 and D/H=(0.76±0.36)x10–5 toward LS 1274 (2 σ uncertainties). With distances of 590±160 and 580±100 pc, respectively, these two lines of sight are currently among the longest Galactic lines of sight with measured D/H. With the addition of these measurements, we see a significant tendency for longer Galactic lines of sight to yield low D/H values, consistent with previous inferences about the deuterium abundance from D/O and D/N measurements. Short lines of sight with H I column densities of logN(HI)<19.2 suggest that the gas-phase D/H value within the Local Bubble is (D/H)LBg=(1.56±0.04)x10–5. However, the four longest Galactic lines of sight with measured D/H, which have d>500 pc and logN(HI)>20.5, suggest a significantly lower value for the true local disk gas-phase D/H value, (D/H)LDg=(0.85±0.09)x10–5. One interpretation of these results is that D is preferentially depleted onto dust grains relative to H and that longer lines of sight that extend beyond the Local Bubble sample more depleted material. In this scenario, the higher Local Bubble D/H ratio is actually a better estimate than (D/H)LDgfor the true local disk D/H, (D/H)LD. However, if (D/H)LDgis different from (D/H)LBgsimply because of variable astration and incomplete interstellar medium mixing, then (D/H)LD=(D/H)LDg.

Abstract Copyright:

Journal keyword(s): ISM: Abundances - Stars: Individual: Alphanumeric: JL 9 - Stars: Individual: Alphanumeric: LS 1274 - Ultraviolet: ISM

Simbad objects: 46

goto Full paper

goto View the reference in ADS

Number of rows : 46

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 * bet Cas dS* 00 09 10.68518 +59 08 59.2120 2.73 2.61 2.27 1.97 1.77 F2III 504 0
2 * bet Cet PM* 00 43 35.37090 -17 59 11.7827 3.90 3.02 2.01 1.29 0.78 G9.5IIICH-1 504 0
3 * gam Cas Be* 00 56 42.5317 +60 43 00.265 1.18 2.29 2.39 2.32 2.40 B0.5IVpe 1153 2
4 * alf Tri SB* 01 53 04.9070960 +29 34 43.780094 3.96 3.90 3.42 3.00 2.72 F5III 277 0
5 V* FS Cet ** 02 35 07.5939678751 +03 43 56.817951540 11.027 12.209 12.412 12.325 11.968 DA1+dM 357 0
6 HD 22468 RS* 03 36 47.2911034958 +00 35 15.938962144 7.09 6.63   5.4   K2:Vnk 1136 0
7 CD-31 1701 PM* 04 07 09.5823437875 -31 18 03.255188785   10.86 10.22     ~ 15 0
8 NAME LIC Cld 04 41 +31.           ~ 258 0
9 BD+52 913 WD* 05 05 30.6182785658 +52 49 51.920797126 10.25 11.44 11.69 11.93 12.108 DA.8 1006 0
10 * alf Aur SB* 05 16 41.35871 +45 59 52.7693 1.33 0.88 0.08 -0.52 -0.96 G3III: 1146 0
11 * del Ori EB* 05 32 00.40009 -00 17 56.7424 0.96 2.02 2.41 2.32 2.54 B0III+O9V 751 0
12 * iot Ori SB* 05 35 25.9819073 -05 54 35.643537 1.45 2.53 2.77     O9IIIvar 739 0
13 * eps Ori s*b 05 36 12.81335 -01 12 06.9089 0.48 1.51 1.69 1.76 1.93 B0Ia 868 0
14 * mu. Col V* 05 45 59.8953630749 -32 18 23.164726112 3.84 4.90 5.18 5.30 5.57 O9.5V 465 0
15 * bet CMa bC* 06 22 41.9853527 -17 57 21.307352 0.77 1.73 1.97 2.11 2.35 B1II-III 691 0
16 RX J0623.2-3741 WD* 06 23 12.6178812523 -37 41 28.041935495   11.88 12.42 12.6   DA.8 99 0
17 * alf CMi SB* 07 39 18.11950 +05 13 29.9552 0.82 0.79 0.37 -0.05 -0.28 F5IV-V+DQZ 1783 0
18 * sig Gem RS* 07 43 18.7269793 +28 53 00.642191 6.38 5.41 4.29 3.37 2.79 K1IIIe 453 0
19 * bet Gem PM* 07 45 18.94987 +28 01 34.3160 3.00 2.14 1.14 0.39 -0.11 K0IIIb 1062 1
20 * zet Pup BY* 08 03 35.04754 -40 00 11.3321 0.89 1.98 2.25 2.36 2.58 O4I(n)fp 1110 1
21 * gam02 Vel WR* 08 09 31.95013 -47 20 11.7108 0.64 1.58 1.83 1.85 2.00 WC8+O7.5III-V 854 0
22 LS 1274 HS* 09 18 56.0105099563 -57 04 25.423148532   12.46 12.38 13.10   sdO 30 0
23 * tet Car SB* 10 42 57.4019674 -64 23 40.020796 1.53 2.54 2.76 2.87 3.10 B0Vp 317 0
24 * alf Cru SB* 12 26 35.89522 -63 05 56.7343           B0.5IV+B1V 79 0
25 BD+25 2534 HS* 12 37 23.5157891619 +25 03 59.871049394 9.117 10.26 10.59 10.642 10.809 sdB1(k) 215 0
26 * 31 Com Ro* 12 51 41.9190038520 +27 32 26.568320838 5.81 5.61 4.94 4.39 4.04 G0IIIp 413 1
27 HZ 43 ** 13 16 21.85329 +29 05 55.3793   12.52 12.66     DAwk+M3.5Ve 450 0
28 * sig Vir V* 13 17 36.2832672 +05 28 11.522114 8.42 6.47 4.80     M1III 91 0
29 * bet Cen bC* 14 03 49.40535 -60 22 22.9266     0.58     B1III 347 0
30 HD 127493 HS* 14 32 21.4928221685 -22 39 25.645935056 8.64 9.74 10.08     sdOHe 88 0
31 HD 149382 HS* 16 34 23.3332720075 -04 00 52.033863463 7.518 8.661 8.943 9.070 9.205 sdB 122 1
32 NAME HVC Complex C HVC 16 34.8 +63 07           ~ 230 1
33 HD 149499B WD* 16 38 31.199 -57 28 10.70   11.12 11.26     DOZ1 100 0
34 * 36 Oph ** 17 15 20.9839376 -26 36 10.157115           K2V+K1V 119 0
35 * lam Sco bC* 17 33 36.52012 -37 06 13.7648 0.52 1.48 1.62     B2IV+DA7.9 376 1
36 JL 9 HS* 19 08 20.7902489982 -72 30 34.378041671   12.96 13.24     sdO 21 0
37 HD 191877 * 20 11 21.0167426728 +21 52 29.768051534 5.51 6.217 6.269     B1Ib 82 0
38 HD 195965 * 20 32 25.5895350401 +48 12 59.312594578 6.03 6.899 6.974     B0V 107 0
39 BD+28 4211 HS* 21 51 11.0220905905 +28 51 50.366090892 8.922 10.25 10.58 10.656 10.831 sdO2VIIIHe5 749 0
40 BD+25 4655 HS* 21 59 41.9751489837 +26 25 57.398356446 8.27 9.39 9.68     sdO6 104 0
41 * eps Ind PM* 22 03 21.6542294981 -56 47 09.537018193   5.75 4.69     K5V 489 0
42 RX J2214.1-4918 WD* 22 14 11.9174871148 -49 19 27.217191655   11.28 11.57 11.7   DA.7 110 0
43 GD 246 WD* 23 12 21.6156138550 +10 47 04.257261526 11.578 12.772 13.090 13.238 13.418 DA.9 206 0
44 Feige 110 HS* 23 19 58.3995050606 -05 09 56.170282845 10.360 11.45 11.50 11.970 12.145 sdO8VIIIHe5 576 1
45 * lam And RS* 23 37 33.8426114 +46 27 29.337984 5.54 4.84 3.82 3.04 2.47 G8IVk 647 0
46 NAME Local Bubble ISM ~ ~           ~ 733 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2004ApJ...609..838W and select 'bookmark this link' or equivalent in the popup menu


2021.05.18-15:58:09

© Université de Strasbourg/CNRS

    • Contact