2012ApJ...749...61H


C.D.S. - SIMBAD4 rel 1.7 - 2020.01.21CET18:02:48

2012ApJ...749...61H - Astrophys. J., 749, 61 (2012/April-2)

The curious conundrum regarding sulfur abundances in planetary nebulae.

HENRY R.B.C., SPECK A., KARAKAS A.I., FERLAND G.J. and MAGUIRE M.

Abstract (from CDS):

Sulfur abundances derived from optical emission line measurements and ionization correction factors (ICFs) in planetary nebulae are systematically lower than expected for the objects' metallicities. We have carefully considered a large range of explanations for this "sulfur anomaly," including: (1) correlations between the size of the sulfur deficit and numerous nebular and central star properties, (2) ICFs which undercorrect for unobserved ions, (3) effects of dielectronic recombination on the sulfur ionization balance, (4) sequestering of S into dust and/or molecules, and (5) excessive destruction of S or production of O by asymptotic giant branch stars. It appears that all but the second scenario can be ruled out. However, we find evidence that the sulfur deficit is generally reduced but not eliminated when S+3 abundances determined directly from IR measurements are used in place of the customary sulfur ICF. We tentatively conclude that the sulfur anomaly is caused by the inability of commonly used ICFs to properly correct for populations of ionization stages higher than S+2.

Abstract Copyright:

Journal keyword(s): ISM: abundances - planetary nebulae: general - stars: evolution

Simbad objects: 38

goto Full paper

goto View the reference in ADS

Number of rows : 38

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 M 31 G 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 10670 1
2 LHA 115-N 7 PN 00 43 25.305 -72 38 18.79     16.212   17.58 ~ 31 0
3 LHA 115-N 29 PN 00 48 36.526 -72 58 00.91 17.72 16.60 16.12 16.5 16.44 ~ 48 0
4 LHA 115-N 38 PN 00 49 51.6437069650 -73 44 21.387841921   16.1 15.382   16.913 ~ 46 0
5 LHA 115-N 44 PN 00 51 56.3674477974 -71 24 44.369134183   15.98 15.2     ~ 42 0
6 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 9181 1
7 LHA 115-N 70 PN 00 59 16.1276399798 -72 01 59.850577842   16.07 16.016   16.916 ~ 43 0
8 LHA 115-N 87 PN 01 21 10.6560090246 -73 14 34.851943244   15.94 15.553   16.758 ~ 42 0
9 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 5444 1
10 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 14469 1
11 IC 418 PN 05 27 28.2060343141 -12 41 50.282659007   9.78 13.0     O7fp 993 2
12 M 42 HII 05 35 17.3 -05 23 28           ~ 3680 0
13 NGC 2022 PN 05 42 06.1905641397 +09 05 10.584345578   14.9 14.2     [WC] 344 0
14 IC 2165 PN 06 21 42.775 -12 59 13.96     10.0     ~ 365 1
15 NGC 2392 PN 07 29 10.7669120392 +20 54 42.478515772   10.28 9.68     O6f 692 0
16 NGC 2440 PN 07 41 54.91 -18 12 29.7   18.9       ~ 626 2
17 IC 2448 PN 09 07 06.3186990004 -69 56 30.690171529   11.1 11.10     O(H)3III-V 221 0
18 NGC 3242 PN 10 24 46.1335198512 -18 38 32.294434711   11.83 12.15     ~ 791 1
19 NGC 5315 PN 13 53 56.9609674528 -66 30 50.915454108   14.58 14.40     [WO4] 291 0
20 M 101 GiP 14 03 12.583 +54 20 55.50   8.46 7.86 7.76   ~ 2493 2
21 WRAY 16-156 PN 14 33 17.97 -60 49 36.3   16.3 16.7   15.38 ~ 156 0
22 NGC 5882 PN 15 16 49.9567882973 -45 38 58.610861335   11.9 10.9     ~ 261 0
23 IC 4593 PN 16 11 44.5480003321 +12 04 17.033164436   10.91 10.84     O7fp 433 0
24 PN Mz 3 PN 16 17 13.3911453558 -51 59 10.706640574   10.8 14.00     O9.5 330 0
25 PN DdDm 1 PN 16 40 18.1519945483 +38 42 20.023281608   14.0       sd+G/K 131 0
26 NGC 6210 PN 16 44 29.5195973292 +23 47 59.491267229   12.3 11.7     Of/[WR] 567 0
27 NGC 6302 PN 17 13 44.339 -37 06 10.95   7.1 10.10     ~ 750 1
28 NGC 6369 PN 17 29 20.4566547788 -23 45 34.771598164   16.6 12.00     [WC4] 297 0
29 NGC 6445 PN 17 49 15.21 -20 00 34.5   18.9       ~ 284 0
30 NGC 6537 PN 18 05 13.104 -19 50 34.88     13.58     ~ 409 1
31 PN M 1-42 PN 18 11 04.99 -28 58 59.1   13.1 14.00     ~ 194 0
32 PN Hu 2-1 PN 18 49 47.56755 +20 50 39.4576     13.3     ~ 261 0
33 NGC 6741 PN 19 02 37.10 -00 26 56.7     9.6     ~ 339 0
34 NGC 6886 PN 20 12 42.83 +19 59 22.6           ~ 311 0
35 NGC 7027 PN 21 07 01.8 +42 14 10   9.1 10.9     ~ 2305 1
36 PN Hu 1-2 PN 21 33 08.3071114501 +39 38 09.524664348     12.0     ~ 271 1
37 NGC 7293 PN 22 29 38.5453078023 -20 50 13.746093105 11.894 13.158 13.524 13.689 13.898 DAO.5 888 0
38 NGC 7662 PN 23 25 53.6 +42 32 06   9.4 12     ~ 907 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2012ApJ...749...61H and select 'bookmark this link' or equivalent in the popup menu


2020.01.21-18:02:48

© Université de Strasbourg/CNRS

    • Contact