2008A&A...480..133L

Query : 2008A&A...480..133L

2008A&A...480..133L - Astronomy and Astrophysics, volume 480133-148 (2008/3-2)

A search for diffuse bands in the circumstellar envelopes of post-AGB stars.

LUNA R., COX N.L.J., SATORRE M.A., GARCIA HERNANDEZ D.A., SUAREZ O. and GARCIA LARIO P.

Abstract (from CDS):

In this work we present the results of a systematic search for diffuse bands (DBs, hereafter) in the circumstellar envelopes of a carefully selected sample of post-AGB stars. We concentrated on analyzing 9 of the DBs most commonly found in the interstellar medium. The strength of these features is determined using high-resolution optical spectroscopy, and the results obtained are compared with literature data on field stars affected only by interstellar reddening. Based on the weak features observed in the subsample of post-AGB stars dominated by circumstellar reddening, we conclude that the carrier(s) of these DBs must not be present in the circumstellar environment of these sources, or at least not under the excitation conditions in which DBs are formed. This conclusion is applicable to all the post-AGB stars studied, irrespective of the dominant chemistry or the spectral type of the star considered. A detailed radial velocity analysis of the features observed in individual sources confirms this result, as the Doppler shifts measured are found to be consistent with an interstellar origin.

Abstract Copyright: ∼

Journal keyword(s): stars: AGB and post-AGB - ISM: dust, extinction

Simbad objects: 51

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Number of rows : 51
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 IRAS 01005+7910 pA* 01 04 45.5109702912 +79 26 46.357116648   11.04 10.87 10.85   B1.7Ibeq 75 0
2 IRAS Z02229+6208 pA* 02 26 41.7882689568 +62 21 21.981286008   14.69 12.00 11.16 8.92 G8-K0_0-Ia: 65 0
3 IC 351 PN 03 47 32.9806443144 +35 02 48.639127308   13.11 12.27 14.35   Of(H) 264 0
4 IRAS 04296+3429 pA* 04 32 56.9743899192 +34 36 12.459816288   16.13 14.09 13.64 11.64 G0Ia 149 0
5 IRAS 04457+4851 LP* 04 49 33.7974782040 +48 56 42.230255316           ~ 7 0
6 IRAS 05113+1347 pA* 05 14 07.7664787608 +13 50 28.200887160   14.786 12.574 11.663 10.26 G5I 72 0
7 IC 418 PN 05 27 28.2059533560 -12 41 50.282287764   9.405 9.010 10.118   O7fp 1059 2
8 IRAS 05341+0852 pA* 05 36 55.0511076432 +08 54 08.656315452   15.37 13.45 12.95 11.43 F5I 126 0
9 HD 44179 pA* 06 19 58.2185496 -10 38 14.706068 9.51 9.33 9.02     B9Ib/II 800 0
10 IRAS 06530-0213 pA* 06 55 31.8205478808 -02 17 28.243142520   16.38 13.99 13.26   F5Ia 87 0
11 HD 56126 pA* 07 16 10.2590823192 +09 59 47.954735376   9.20 8.32     F0/5Ia 330 0
12 BM IV 10 C* 07 29 12.5855662656 -19 27 48.659126364   13.44 12.13 10.41 9.44 C 57 0
13 IRAS 08005-2356 AB* 08 02 40.7049577608 -24 04 42.588796404   12.454 11.139 10.930   F5Iae 99 0
14 IRAS 08143-4406 pA* 08 16 03.0217187040 -44 16 04.640255580           F8I 33 0
15 CD-44 4961 pA* 08 56 14.1799968840 -44 43 10.721249580   10.55 9.176     F3e 82 1
16 IRC +10216 C* 09 47 57.40632 +13 16 43.5648           C9,5e 2455 0
17 HD 89353 pA* 10 18 07.5899342712 -28 59 31.195183524   5.76 5.53     B9.5Ib/II 315 0
18 CD-53 4543 pA* 12 20 15.0622728552 -53 55 31.444773420 10.29 9.74 9.36 9.69   A7I 49 0
19 WRAY 16-147 Sy* 14 11 52.0604355768 -51 26 24.187122024     14.20     ~ 240 1
20 NGC 6210 PN 16 44 29.5191019368 +23 47 59.421958296   12.3 11.7     Of/[WR] 597 0
21 SS 293 pA* 17 03 10.0705512504 -47 00 27.731886516           Ae 93 0
22 CPD-56 8032 PN 17 09 00.9278385254 -56 54 47.863882536 11.24 11.48 11.04 11.067   [WC11] 277 0
23 [M81] I-540 pA* 17 11 38.9228550600 -24 07 32.922810408     14.1 13.5   ~ 21 0
24 IRAS 17097-3210 AB? 17 12 58.8652210032 -32 14 29.336574588   17.5 16.1 15.0   B4Ve 9 1
25 RAFGL 6815S pA* 17 18 19.8040606320 -32 27 21.547417932           G2I 153 0
26 IRAS 17245-3951 pA* 17 28 04.6523711554 -39 53 44.300653761     16.468   13.168 F6I 39 0
27 SS 318 PN 17 42 14.39 -08 43 19.5     13.2     ~ 32 0
28 HD 161796 pA* 17 44 55.4694563472 +50 02 39.482823336 8.00 7.68 7.21 6.77 6.51 F3Ib 335 0
29 Hen 3-1475 PN 17 45 14.1819342984 -17 56 46.778166204       12.733   B7e 201 0
30 IRAS 18025-3906 pA* 18 06 03.2989104264 -39 05 56.716718208       11.24 9.91 G2I 25 0
31 HD 341617 pA* 18 08 20.0857525920 +24 10 43.321447236   11.41 11.39     B1IIIe 92 0
32 V* AC Her pA* 18 30 16.2373118976 +21 52 00.599340000 8.00 7.79 7.01     F4Ibp 359 0
33 HD 172324 pA* 18 37 58.7794438440 +37 26 05.794443384 8.2 8.17 8.16     A0Iabe 46 0
34 HD 179821 pA* 19 13 58.6082398776 +00 07 31.935181836 10.81 9.694 8.19     G4_0-Ia 247 0
35 EM* StHA 161 pA* 19 21 55.2903649824 +35 02 55.026546000 10.74 11.49 11.54 11.34   Fe 35 0
36 HD 183143 s*b 19 27 26.5636061496 +18 17 45.193019136 8.25 8.08 6.86 5.74 4.79 B7Ia+ 464 0
37 HD 184738 PN 19 34 45.2337620448 +30 30 58.950651240   10.41 10.44     [WC9] 976 0
38 IRAS 19386+0155 pA* 19 41 08.2923311712 +02 02 31.208770140   12.32 11.20     F5Ib 44 0
39 HD 187885 pA* 19 52 52.7033593752 -17 01 50.289441096   9.25 8.68 8.32   F2/6Ia 185 0
40 IRAS 20000+3239 LP* 20 01 59.5133268456 +32 47 32.799122916   16.13 13.39 11.80 10.32 ~ 84 0
41 HD 192641 WR* 20 14 31.7666855880 +36 39 39.598210224 7.80 8.20 7.91     WC7pd+O9V 347 0
42 HD 193793 WR* 20 20 27.9757908696 +43 51 16.286840244 6.90 7.25 6.85 4.58   WC7pd+O5.5fc 754 0
43 LS II +34 26 PN 20 48 16.6321353648 +34 27 24.344529588 10.48 11.11 10.9     B1.5Ia/Iabe 76 0
44 V* V1610 Cyg pA* 21 02 18.27 +36 41 37.0           F5Iae 892 1
45 NGC 7027 PN 21 07 01.571952 +42 14 10.47120   10.358 8.831 10.157   ~ 2541 1
46 [D75b] Em* 21-021 PN 21 29 58.4711786760 +51 04 00.323924520   15.66 14.20 13.89   O7(f)/[WC11] 259 0
47 EM* GGR 44 pA* 22 04 12.3052557528 +53 04 01.351197264   13.23 12.51     Be 45 0
48 V* V448 Lac pA* 22 24 31.4283564864 +43 43 10.978781916 11.22 10.61 9.69     F7I 115 0
49 HD 235858 pA* 22 29 10.3748806056 +54 51 06.344572284   11.40 9.52 8.47 7.34 G5Ia 264 0
50 HD 213985 pA* 22 35 27.5260668720 -17 15 26.894587392 9.31 9.08 8.90     A0III 118 0
51 IRAS 23304+6147 pA* 23 32 44.7858431592 +62 03 49.090372272   15.36 12.99 12.23 10.50 G2Ia 121 0

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