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 - 2023
#notes
1 V* TW Cam pA* 04 20 47.6363454312 +57 26 28.522779504 12.12 11.42 10.08 9.29   G8Ib 69 0
2 2MASS J04445840-7035225 pA* 04 44 58.4117000400 -70 35 22.621636392 15.694 15.787 15.502 15.30 15.155 F2IIpe! 4 0
3 2MASS J04524318-7047371 pA* 04 52 43.1961533760 -70 47 37.338483048 16.835 16.569 15.712 15.032 14.665 F7IIp(e) 10 2
4 2MASS J05014345-6940483 pA* 05 01 43.4949180432 -69 40 48.348437952 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 04.9906534080 -68 40 24.669726024 15.655 15.609 15.446 14.80 14.432 F7-9Ibpe 20 0
7 2MASS J05083053-6922372 pA* 05 08 30.4992616680 -69 22 37.584251868 14.600 14.456 14.282 14.07 13.580 A0-1IV/C 9 0
8 2MASS J05115942-6925329 pA* 05 11 59.4338761680 -69 25 32.959156440 14.49 14.01 13.54 13.19   F5Ibp 5 0
9 MSX LMC 281 pA* 05 13 33.7378800072 -66 34 18.827224500 12.984 13.612 11.390   11.961 F8-G0Ipe 6 0
10 SV* HV 915 RV* 05 14 18.1109835264 -69 12 34.872203808 15.837 14.924 14.552 13.96 13.853 F7-9Ibpe 28 0
11 [GBV2011] 54 pA* 05 14 18.2 -69 17 24           ~ 1 0
12 SV* HV 2444 RV* 05 18 45.4623502872 -69 03 21.718940544 15.498 15.692 14.794 14.41 14.298 F2-4Ibpe 19 0
13 OGLE LMC-T2CEP-104 RV* 05 21 49.0978457232 -70 04 34.336307172 17.499 16.003 15.972 14.97 14.872 ~ 19 0
14 2MASS J05222112-6555516 AB* 05 22 21.1376537928 -65 55 51.481171344 19.170 17.145 15.499 14.059 13.799 K2-3IIp 6 0
15 V* AY Lep pA* 05 22 59.4229189104 -20 32 53.048251464   10.52 9.48     ~ 29 0
16 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 16522 1
17 SV* HV 5829 RV* 05 25 19.4953517232 -70 54 09.818194536 16.310 15.450 14.973 14.800 14.276 G0Ib 16 0
18 SV* HV 2522 pA* 05 26 27.2388309720 -66 42 58.683936564 15.668 15.529 14.691   14.014 F6Ibp 8 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 10 0
20 SMP LMC 64 pA* 05 27 35.6519960256 -69 08 56.376548880 15.897 16.651 16.408   15.563 ~ 35 0
21 LHA 120-S 165 pA* 05 27 47.6354794128 -71 48 52.724258640 13.638 14.37 14.23 14.29 13.815 ~ 14 0
22 OGLE LMC-T2CEP-147 RV* 05 31 50.9978859696 -69 11 46.356217296 14.745 14.781 14.299 14.03 13.862 F4-G1Ibpe 21 0
23 2MASS J05360587-6958026 pA* 05 36 05.8822566936 -69 58 02.597979324 15.133 14.822 14.295 14.080 13.715 F2III: 8 0
24 SV* HV 12631 RV* 05 39 32.8272810866 -71 21 54.287474034 16.371 15.532 15.155 14.443 14.449 C 17 0
25 OGLE LMC-T2CEP-174 RV* 05 40 00.4969222728 -69 42 14.653446912 14.745 14.781 14.457 13.380 13.693 F0Ia 16 0
26 LM 2-39 LP* 05 40 14.7949872960 -69 28 49.163800188 16.641 17.110 16.757 15.87 16.033 ~ 14 0
27 IRAS 05433-6728 pA* 05 43 10.8536136480 -67 27 28.199391336 18.680 16.902 15.113   13.074 M0 12 0
28 OGLE LMC-T2CEP-180 RV* 05 43 12.8773185120 -68 33 57.126683664 16.995 16.146 15.785 14.87 14.552 F7Ibp 13 0
29 SV* HV 2862 RV* 05 51 22.5467140704 -69 53 51.318788784 15.870 15.589 15.160 14.460 14.009 F6-8Ibpe 15 0
30 V* DY Ori pA* 06 06 14.9085939696 +13 54 19.118975940   12.956 11.503 11.030   ~ 50 1
31 V* CT Ori RV* 06 09 57.9915157032 +09 52 31.839108384   11.24 9.14     F9 38 0
32 V* SU Gem Mi* 06 14 00.0252211992 +27 42 12.186889416   11.70 10.19 11.92   F8/G0Ib 51 0
33 V* UY CMa RV* 06 18 16.3755429480 -17 02 34.676976156   11.55 10.80     G0V 41 0
34 V* V382 Aur pA* 06 37 52.4269199856 +53 31 01.958446992   9.585 9.295 9.078   F7IV: 129 0
35 V* ST Pup pA* 06 48 56.4136156056 -37 16 33.338192304   10.47 9.28 9.89 9.29 G2I 89 0
36 V* PS Gem pA* 07 03 39.6305052432 +10 46 13.068774048   7.76 7.37     A0 113 0
37 V* V421 CMa pA* 07 16 08.2750036896 -23 27 01.536458868   11.16 10.73     F5 29 0
38 V* BZ Pyx pA* 09 08 10.1394900720 -28 19 10.396543512   12.04 11.39     F6Ia 16 0
39 IRAS 09144-4933 pA* 09 16 09.6356114088 -49 46 12.098975844     11.1     M4/S? 19 0
40 V* GP Cha RV* 09 53 57.6758478120 -76 36 52.265551536   12.49 11.52     G0 17 0
41 V* V709 Car pA* 10 19 16.8824970456 -57 19 25.875376392   12.71 11.28     G8Ia-0 16 0
42 V* V802 Car pA* 11 02 04.3154924592 -62 09 42.834006396   9.57 8.90 9.38   F2III 51 0
43 V* RU Cen pA* 12 09 23.8148403768 -45 25 34.801333356   9.81 8.70     G1Ie 92 1
44 V* SX Cen RV* 12 21 12.5736554208 -49 12 41.058679536   10.11 9.60     B5III 68 0
45 IRAS 13258-8103 pA* 13 31 07.1034868704 -81 18 30.504666636           F4Ib-G0Ib 12 0
46 V* EN TrA pA* 14 57 00.6850828200 -68 50 22.897081716   9.42 8.70     F2Ib 70 0
47 IRAS 15556-5444 pA* 15 59 32.5634588184 -54 53 20.448613752           F8 11 0
48 V* V1333 Sco pA* 16 26 20.3836477344 -34 17 12.911443404   12.38 11.41     F8 19 0
49 CD-48 11445 pA* 17 07 36.6587101920 -48 19 08.477155920   12.33 10.55     G2p(R) 30 0
50 IRAS 17233-4330 pA* 17 26 58.6372808208 -43 33 13.574510568   11.99 11.56     A2Iab 20 0
51 V* LR Sco RV* 17 27 53.6271514344 -43 50 46.291360596   11.45 10.37     G0I 32 0
52 V* UY Ara pA* 17 29 28.9495380096 -59 54 02.183763204   11.86 10.98 10.97   ~ 24 1
53 V* AI Sco RV* 17 56 18.5781588120 -33 48 43.278508116   10.99 9.98     G5 46 0
54 V* V2053 Oph pA* 18 14 49.3841392968 +05 12 55.714343112   11.75 10.28     C 42 0
55 IRAS 18158-3445 pA* 18 19 13.3719570360 -34 44 29.981047092   13.970 13.070     F6 7 0
56 BD+03 3950 RV* 19 15 01.1800830552 +03 48 42.641057988   11.16 10.37     F8 37 0
57 V* EP Lyr RV* 19 18 19.5570243336 +27 51 03.082292928   11.22 9.96 10.14   G2II 86 1
58 BD-02 4931 pA* 19 18 22.7165647344 -02 42 10.880466588   11.55 10.78     B1III 32 0
59 V* QY Sge LP* 20 07 54.6224115384 +18 42 54.538913232   12.57       G0Ie 52 0
60 V* HM Aqr pA* 22 35 27.5260668720 -17 15 26.894587392 9.31 9.08 8.90     A0III 105 0

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2023.02.02-19:17:38

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