2012MNRAS.426.2652B


C.D.S. - SIMBAD4 rel 1.7 - 2021.05.16CEST21:24:08

2012MNRAS.426.2652B - Mon. Not. R. Astron. Soc., 426, 2652-2667 (2012/November-2)

The Keck Aperture Masking Experiment: dust-enshrouded red giants.

BLASIUS T.D., MONNIER J.D., TUTHILL P.G., DANCHI W.C. and ANDERSON M.

Abstract (from CDS):

While the importance of dusty asymptotic giant branch (AGB) stars to galactic chemical enrichment is widely recognized, a sophisticated understanding of the dust formation and wind-driving mechanisms has proven elusive due in part to the difficulty in spatially resolving the dust-formation regions themselves. We have observed 20 dust-enshrouded AGB stars as part of the Keck Aperture Masking Experiment, resolving all of them in multiple near-infrared bands between 1.5 and 3.1 µm. We find 45 per cent of the targets to show measurable elongations that, when correcting for the greater distances of the targets, would correspond to significantly asymmetric dust shells at par with the well-known cases of IRC + 10216 or CIT 6. Using radiative transfer models, we find the sublimation temperature of Tsub(silicates) ={Ux2028}1130 ±90K and Tsub(amorphous carbon) = 1170±60K, both somewhat lower than expected from laboratory measurements and vastly below temperatures inferred from the inner edge of young stellar objects discs. The fact that O-rich and C-rich dust types showed the same sublimation temperature was surprising as well. For the most optically thick shells (tau\mn 2.2\mspacemu\mi m\mo >\mn 2), the temperature profile of the inner dust shell is observed to change substantially, an effect we suggest could arise when individual dust clumps become optically thick at the highest mass-loss rates.

Abstract Copyright: © 2012 The Authors Monthly Notices of the Royal Astronomical Society © 2012 RAS

Journal keyword(s): radiative transfer - instrumentation: interferometers - circumstellar matter

VizieR on-line data: <Available at CDS (J/MNRAS/426/2652): table2.dat table3.dat table5.dat>

Simbad objects: 64

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Number of rows : 64

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* KU And Mi* 00 06 52.7551927308 +43 05 02.356209801       14.12   M10 76 0
2 * alf Cas PM* 00 40 30.4410679 +56 32 14.392170 4.52 3.40 2.23 1.45 0.85 K0-IIIa 322 0
3 * del Psc PM* 00 48 40.94433 +07 35 06.2926 7.83 5.95 4.44 3.27 2.40 K5-III 179 0
4 IRC +10011 OH* 01 06 25.9889735162 +12 35 52.890666456   20.7   18.26 14.01 M8 406 0
5 HD 9329 * 01 33 33.2035252086 +62 31 35.765125309   8.24 7.07     K0III 16 0
6 OH 127.8 -0.0 OH* 01 33 51.21 +62 26 53.2           M9III 175 0
7 * chi Cas * 01 33 55.8803462403 +59 13 55.387594638   5.675 4.681     G9IIIb 113 0
8 HD 9878 * 01 38 12.6353673856 +62 21 06.419320474   6.686 6.709     B7V 18 0
9 HD 64371 * 07 57 21.8063108931 +61 59 31.989876680   9.58 9.22     F 3 0
10 IRC +10216 C* 09 47 57.40632 +13 16 43.5648     10.96     C9,5e 2189 0
11 HD 87262 * 10 03 40.9863799664 -09 34 25.641441668   7.733 6.097     M0+III 18 0
12 V* RW LMi C* 10 16 02.2834693816 +30 34 18.977096332       15.27   C4,3e 383 0
13 IRC -10236 C* 10 17 00.5764421884 -14 39 30.125586177       12.73 10.31 C 69 0
14 * mu. Hya PM* 10 26 05.42630 -16 50 10.6429 7.11 5.29 3.81 2.70 1.87 K4III 116 0
15 RAFGL 4211 C* 15 11 41.4387312231 -48 19 58.763122448           C-rich 47 0
16 C* 2232 C* 15 18 22.1700545051 -49 51 04.553585262       11.18   C-rich 19 0
17 * phi01 Lup PM* 15 21 48.3696659 -36 15 40.952469   5.076 3.546     K4III 87 0
18 HD 137709 * 15 29 24.2706635802 -46 43 57.732597734   6.951 5.222     K4III 34 0
19 RAFGL 1922 C* 17 07 58.10976 -24 44 31.1820           C-rich 60 0
20 V* V656 Her LP? 17 20 18.8706125013 +18 03 25.456299858 8.68 6.62 5.00     M2III 64 0
21 * 32 Sco PM* 17 21 41.5617157118 -24 54 21.973256546   7.76 6.36     K3III 15 0
22 HD 158227 * 17 27 23.2068756657 +18 07 48.983804569   9.39 7.99     K5 7 0
23 IRC +20326 C* 17 31 55.3249026846 +17 45 20.812458717   15.54 14.48 14.38   C 72 0
24 HD 158774 * 17 32 37.8227410001 -33 47 46.314517579   9.81 8.03     M0III 7 0
25 OH 2.6 -0.4 OH* 17 53 18.84768 -26 56 37.4064           M8-9 71 0
26 HD 163428 V* 17 57 07.4594005267 -23 56 21.282837721 11.10 8.60 6.65 4.95 3.57 K5Ib 53 0
27 HD 168366 * 18 19 47.7523537322 -10 53 24.867333202   9.51 7.95     K0/1III(+G) 5 0
28 * 106 Her PM* 18 20 17.9148178278 +21 57 40.662235772 8.54 6.54 4.96 3.62 2.62 M1III 92 0
29 RAFGL 2135 C* 18 22 34.683 -27 06 29.38           C-rich 47 0
30 HD 170137 V* 18 27 50.3209543867 +03 44 54.836643792   7.71 6.06     K3III 23 0
31 RAFGL 2199 Mi* 18 35 46.8114216120 +05 35 50.500895964           O-rich 62 1
32 IRC +20370 C* 18 41 54.5507538243 +17 41 08.481183828       13.56   C7,3e 110 0
33 HD 173074 * 18 43 37.3732404085 -01 33 32.479228834   9.12 7.22     M2III 11 0
34 HD 173833 * 18 46 41.3618677840 +18 42 21.268177047   7.761 6.179     K5 18 0
35 RAFGL 2290 OH* 18 58 30.0947842133 +06 42 57.698061173           O-rich 122 0
36 * tau Sgr PM* 19 06 56.4052936935 -27 40 13.609432896 5.65 4.51 3.31 2.44 1.85 K1.5IIIb 148 0
37 V* V4416 Sgr LP* 19 22 47.8817854840 -32 30 11.649965745   9.75 8.10     M2III 10 0
38 HD 231437 * 19 26 55.1437097016 +15 06 17.131386775   10.74 8.69     M0 5 0
39 * e Aql V* 19 30 39.8360572 -02 47 19.994380 8.83 6.78 5.03     K5III 59 0
40 * eta Cyg * 19 56 18.3722223 +35 05 00.322759 5.800 4.910 3.880 3.19 2.66 K0III 272 0
41 HD 189114 V* 19 58 32.5342319974 -03 33 13.402152653   8.75 6.83     K5III 11 0
42 RAFGL 2513 C* 20 09 14.2446480503 +31 25 44.893244193           C-rich 47 0
43 IRC -10529 OH* 20 10 27.8733409252 -06 16 13.757843352         15.49 M: 135 0
44 HD 192464 * 20 15 15.4509525659 -07 26 22.396209185   10.01 8.51     M2/3III 4 0
45 * omi02 Cyg EB* 20 15 28.3216287393 +47 42 51.221859715 6.54 5.50 3.98 2.78 1.86 K7Ib-II+B1V 322 0
46 HD 196241 * 20 34 36.0035654327 +41 05 54.242142037   8.13 6.65     K5 19 0
47 * 70 Aql * 20 36 43.6339444744 -02 32 59.834172996   6.475 4.880     K4+IIIBa1 73 0
48 V* V Cyg C* 20 41 18.2688237607 +48 08 28.886946369   14.05 7.70     C7,4eJ 295 0
49 * eps Cyg ** 20 46 12.6823609 +33 58 12.924926 4.370 3.520 2.480 1.73 1.19 K0III 485 0
50 * k Aqr LP* 20 47 44.2389847 -05 01 39.721978 8.04 6.11 4.44 2.97 1.66 M3III 120 0
51 HD 198330 PM* 20 48 37.5624925542 +30 47 34.094453203   8.71 7.25     K4III 13 0
52 HD 198611 ** 20 49 33.1038068150 +50 46 59.465814552   8.98 7.22     K5 8 0
53 RAFGL 2686 C* 20 59 09.5922788988 +27 26 38.604197392           C8-9,5eJ 50 1
54 HD 200451 * 21 02 41.2378752300 +26 30 29.036157167   8.92 7.20     K5III 14 0
55 HD 200817 SB* 21 03 47.6233971240 +53 17 09.265688147   6.927 5.918     K0III 26 0
56 RAFGL 2699 C* 21 04 14.5270005345 +53 21 04.761679777     15.40     C8,3e 38 0
57 * ksi Cyg SB* 21 04 55.8622910 +43 55 40.264460 7.17 5.39 3.73 2.55 1.63 K4.5Ib-II 299 0
58 V* RV Aqr C* 21 05 51.7378981699 -00 12 42.121668132     11.5     C6,3e 98 0
59 HD 198661 * 21 07 13.9570556326 -83 55 27.363239740   8.83 8.48     F2V 8 0
60 HD 202987 * 21 17 14.2469273298 +55 47 52.804265354   7.430 5.975     K3III 30 0
61 HD 202897 * 21 20 58.7305338504 -54 59 20.067129715   11.04 9.91     K2III 4 0
62 IRC +40540 C* 23 34 27.5215563443 +43 33 01.299562617     15.12     C8,3.5eJ 172 0
63 * lam And RS* 23 37 33.8426114 +46 27 29.337984 5.54 4.84 3.82 3.04 2.47 G8IVk 647 0
64 HD 222499 PM* 23 41 04.6102895894 +41 51 02.020457240 9.980 8.290 6.860     K2 8 0

    Equat.    Gal    SGal    Ecl

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2021.05.16-21:24:08

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