2011A&A...533A..99G


Query : 2011A&A...533A..99G

2011A&A...533A..99G - Astronomy and Astrophysics, volume 533A, 99-99 (2011/9-1)

Silicate features in galactic and extragalactic post-AGB discs.

GIELEN C., BOUWMAN J., VAN WINCKEL H., LLOYD EVANS T., WOODS P.M., KEMPER F., MARENGO M., MEIXNER M., SLOAN G.C. and TIELENS A.G.G.M.

Abstract (from CDS):

In this paper we study the Spitzer and TIMMI2 infrared spectra of post-AGB disc sources, both in the Galaxy and the LMC. Using the observed infrared spectra we determine the mineralogy and dust parameters of the discs, and look for possible differences between the Galactic and extragalactic sources. Modelling the full spectral range observed allows us to determine the dust species present in the disc and different physical parameters such as grain sizes, dust abundance ratios, and the dust and continuum temperatures. We find that all the discs are dominated by emission features of crystalline and amorphous silicate dust. Only a few sample sources show features due to CO2 gas or carbonaceous molecules such as PAHs and C60 fullerenes. Our analysis shows that dust grain processing in these discs is strong, resulting in large average grain sizes and a very high crystallinity fraction. However, we do not find any correlations between the derived dust parameters and properties of the central source. There also does not seem to be a noticeable difference between the mineralogy of the Galactic and LMC sources. Even though the observed spectra are very similar to those of protoplanetary discs around young stars, showing similar mineralogy and strong grain processing, we do find evidence for differences in the physical and chemical processes of the dust processing.

Abstract Copyright:

Journal keyword(s): stars: AGB and post-AGB - stars: evolution - circumstellar matter - binaries: general

Nomenclature: Table 1: [GBV2011] NN (Nos 1-33). Table 2: [GBV2011] NN (Nos 34-57).

Simbad objects: 60

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Number of rows : 60
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 V* TW Cam pA* 04 20 47.6362030815 +57 26 28.517663334 12.12 11.42 10.08 9.29   G8Ib 67 0
2 2MASS J04445840-7035225 pA* 04 44 58.4121246822 -70 35 22.621680484 15.694 15.787 15.502 15.30 15.155 F2IIpe! 4 0
3 2MASS J04524318-7047371 pA* 04 52 43.1965386448 -70 47 37.337339407 16.835 16.569 15.712 15.032 14.665 F7IIp(e) 9 2
4 2MASS J05014345-6940483 pA* 05 01 43.4948674591 -69 40 48.348888394 17.689 17.023 15.739 14.82 14.540 G0Ibp 4 0
5 SSTISAGE1C J050224.17-660637.2 pA* 05 02 24.176 -66 06 37.22 16.971 17.182 16.952 15.790 16.436 ~ 8 0
6 SV* HV 2281 RV* 05 03 04.9909177270 -68 40 24.670118531 15.655 15.609 15.446 14.80 14.432 F7-9Ibpe 19 0
7 2MASS J05083053-6922372 pA* 05 08 30.4968795440 -69 22 37.541782421 14.600 14.456 14.282 14.07 13.580 A0-1IV/C 8 0
8 2MASS J05115942-6925329 pA* 05 11 59.4338763342 -69 25 32.959372375 14.49 14.01 13.54 13.19   F5Ibp 5 0
9 MSX LMC 281 pA* 05 13 33.7381226726 -66 34 18.828103462 12.984 13.612 11.390   11.961 F8-G0Ipe 6 0
10 SV* HV 915 RV* 05 14 18.1109733051 -69 12 34.870585607 15.837 14.924 14.552 13.96 13.853 F7-9Ibpe 26 0
11 [GBV2011] 54 pA* 05 14 18.2 -69 17 24           ~ 1 0
12 SV* HV 2444 RV* 05 18 45.4624021686 -69 03 21.717855214 15.498 15.692 14.794 14.41 14.298 F2-4Ibpe 17 0
13 OGLE LMC-T2CEP-104 RV* 05 21 49.1088294000 -70 04 34.374904906 17.499 16.003 15.972 14.97 14.872 ~ 19 0
14 2MASS J05222112-6555516 AB* 05 22 21.1376732958 -65 55 51.482126813 19.170 17.145 15.499 14.059 13.799 K2-3IIp 6 0
15 V* AY Lep pA* 05 22 59.4223189375 -20 32 53.046745853   10.52 9.48     ~ 24 0
16 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 15476 1
17 SV* HV 5829 RV* 05 25 19.4955859084 -70 54 09.818161716 16.310 15.450 14.973 14.800 14.276 G0Ib 14 0
18 SV* HV 2522 pA* 05 26 27.2387757219 -66 42 58.683896146 15.668 15.529 14.691   14.014 F6Ibp 7 0
19 SSTISAGE1C J052707.07-702001.9 pA* 05 27 07.076 -70 20 01.91 14.981 15.793 15.730 15.681 15.768 B3Ve 9 0
20 SMP LMC 64 pA* 05 27 35.6527028058 -69 08 56.379284844 15.897 16.651 16.408   15.563 ~ 35 0
21 LHA 120-S 165 pA* 05 27 47.6358280852 -71 48 52.723136690 13.638 14.37 14.23 14.29 13.815 ~ 13 0
22 OGLE LMC-T2CEP-147 RV* 05 31 50.9980983316 -69 11 46.357793059 14.745 14.781 14.299 14.03 13.862 F4-G1Ibpe 20 0
23 2MASS J05360587-6958026 pA* 05 36 05.8822086013 -69 58 02.597379232 15.133 14.822 14.295 14.080 13.715 F2III: 8 0
24 SV* HV 12631 RV* 05 39 32.80 -71 21 54.3 16.371 15.532 15.155 14.443 14.449 C 17 0
25 OGLE LMC-T2CEP-174 RV* 05 40 00.4968772621 -69 42 14.653872184 14.745 14.781 14.457 13.380 13.693 F0Ia 15 0
26 LM 2-39 LP* 05 40 14.8020520144 -69 28 49.180231897 16.641 17.110 16.757 15.87 16.033 ~ 14 0
27 IRAS 05433-6728 pA* 05 43 10.8538996347 -67 27 28.198971224 18.680 16.902 15.113   13.074 M0 12 0
28 OGLE LMC-T2CEP-180 RV* 05 43 12.8774019657 -68 33 57.127421762 16.995 16.146 15.785 14.87 14.552 F7Ibp 12 0
29 SV* HV 2862 RV* 05 51 22.5466673719 -69 53 51.319537336 15.870 15.589 15.160 14.460 14.009 F6-8Ibpe 14 0
30 V* DY Ori pA* 06 06 14.9086299520 +13 54 19.144206036   12.956 11.503 11.030   ~ 47 1
31 V* CT Ori RV* 06 09 57.9922132420 +09 52 31.847167021   11.24 9.14     F9 37 0
32 V* SU Gem Mi* 06 14 00.0255668685 +27 42 12.183565975   11.70 10.19     F8/G0Ib 48 0
33 V* UY CMa RV* 06 18 16.3755832779 -17 02 34.675568987   11.55 10.80     G0V 39 0
34 V* V382 Aur pA* 06 37 52.4275241570 +53 31 01.954746267   9.54 9.04     F7IV: 125 0
35 V* ST Pup pA* 06 48 56.4137309745 -37 16 33.336632924   10.47 9.28 9.89 9.29 G2I 86 0
36 V* PS Gem pA* 07 03 39.6306725638 +10 46 13.076555664   7.76 7.37     A0 108 0
37 V* V421 CMa pA* 07 16 08.2750839195 -23 27 01.536617548   11.16 10.73     F5 23 0
38 V* BZ Pyx pA* 09 08 10.1395970261 -28 19 10.393046962   12.04 11.39     F6Ia 15 0
39 IRAS 09144-4933 RV* 09 16 09.6357192580 -49 46 12.091844704     11.1     M4/S? 18 0
40 V* GP Cha RV* 09 53 57.6766254343 -76 36 52.264816793   12.49 11.52     G0 14 0
41 V* V709 Car pA* 10 19 16.8819372679 -57 19 25.874710095   12.71 11.28     G8Ia-0 15 0
42 V* V802 Car pA* 11 02 04.3151180751 -62 09 42.834842337   9.57 8.90 9.38   F2III 50 0
43 V* RU Cen RV* 12 09 23.8147186123 -45 25 34.813401164   9.81 8.70     G1Ie 90 0
44 V* SX Cen RV* 12 21 12.5740806517 -49 12 41.059392756   10.11 9.60     B5III 67 0
45 IRAS 13258-8103 pA* 13 31 07.1345992990 -81 18 30.484275318           F4Ib-G0Ib 11 0
46 V* EN TrA pA* 14 57 00.6830179855 -68 50 22.901317885   9.42 8.70     F2Ib 68 0
47 IRAS 15556-5444 pA* 15 59 32.5629835254 -54 53 20.455002850           F8 10 0
48 V* V1333 Sco pA* 16 26 20.3836937817 -34 17 12.912826289   12.38 11.41     F8 18 0
49 CD-48 11445 pA* 17 07 36.6576312333 -48 19 08.476517172   12.33 10.55     G2p(R) 29 0
50 IRAS 17233-4330 pA* 17 26 58.6357460983 -43 33 13.582808324   11.99 11.56     A2Iab 19 0
51 V* LR Sco RV* 17 27 53.6264684155 -43 50 46.286212209   11.45 10.37     G0I 32 0
52 V* UY Ara pA* 17 29 28.9503759686 -59 54 02.186764439   11.86 10.98 10.97   ~ 24 1
53 V* AI Sco RV* 17 56 18.5761406960 -33 48 43.261703840   10.99 9.98     G5 46 0
54 V* V2053 Oph pA* 18 14 49.3842596707 +05 12 55.717076925   11.75 10.28     C 40 0
55 IRAS 18158-3445 pA* 18 19 13.3720684506 -34 44 29.978275435   13.970 13.070     F6 6 0
56 BD+03 3950 RV* 19 15 01.1800400072 +03 48 42.640112771   11.16 10.37     F8 34 0
57 V* EP Lyr pA* 19 18 19.5565673262 +27 51 03.077324082   11.22 9.96 10.14   G2II 84 1
58 BD-02 4931 pA* 19 18 22.7164743400 -02 42 10.880951310   11.55 10.78     B1III 30 0
59 V* QY Sge LP* 20 07 54.6188178294 +18 42 54.520818409   12.57       G0Ie 50 0
60 V* HM Aqr pA* 22 35 27.5256072315 -17 15 26.885199823 9.31 9.08 8.90     A0III 102 0

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2021.08.05-03:52:55

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