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Query : 2001MNRAS.322..280Z |
2001MNRAS.322..280Z - Mon. Not. R. Astron. Soc., 322, 280-308 (2001/April-1)
Bipolar outflows in OH/IR stars.
ZIJLSTRA A.A., CHAPMAN J.M., TE LINTEL HEKKERT P., LIKKEL L., COMERON F., NORRIS R.P., MOLSTER F.J. and COHEN R.J.
Abstract (from CDS):
A model is presented consisting of an outer AGB wind which is swept up by a faster post-AGB wind, with either the AGB or post-AGB wind being non-spherically symmetric. The interface of the two winds is shown to exhibit a linear relation between velocity and distance from the star, giving the impression of an accelerating outflow. The OH data confirm the predicted linear velocity gradients, and also reveal torus-like, uniformly expanding components.
All sources are discussed in detail using optical/HST images where available. ISO data for Roberts 22 reveal a chemical dichotomy, with both crystalline silicates and PAH features being present. IRAS 16342-3814 shows a dense torus with mass 0.1M☉ and density of 108cm–3; HST data show four point-like sources located symmetrically around the nebula, near the outer edge of the dense torus.
Lifetimes for the bipolar OH/IR stars are shown to be in excess of 104yr, longer than normal post-AGB time-scales. This suggests that the toruses or discs are near-stationary. We suggest that accretion from such a disc slows down the post-AGB evolution. Such a process could explain the link between the long-lived bipolar nebular geometry and the retarded star.
Abstract Copyright: The Royal Astronomical Society
Journal keyword(s): masers - stars: AGB and post-AGB - planetary nebulae: general - infrared: stars
Simbad objects: 52
Number of rows : 52 |
N | Identifier | Otype |
ICRS (J2000) RA |
ICRS (J2000) DEC |
Mag U | Mag B | Mag V | Mag R | Mag I | Sp type |
#ref
1850 - 2024 |
#notes |
---|---|---|---|---|---|---|---|---|---|---|---|---|
1 | RAFGL 618 | pA* | 04 42 53.6242032600 | +36 06 53.400902220 | 16.32 | 12.59 | C-rich | 1001 | 0 | |||
2 | IRAS 04496-6958 | C* | 04 49 18.4933717920 | -69 53 14.430196680 | 20.060 | 20.027 | 18.791 | 15.087 | 15.060 | C | 49 | 0 |
3 | HD 44179 | pA* | 06 19 58.2185496 | -10 38 14.706068 | 9.51 | 9.33 | 9.02 | B9Ib/II | 765 | 0 | ||
4 | PN Vo 1 | PN | 06 59 26.4167860656 | -79 38 47.118534828 | [WC10] | 100 | 0 | |||||
5 | V* VY CMa | s*r | 07 22 58.3261352189 | -25 46 03.194390594 | 12.01 | 10.068 | 8.691 | 7.938 | M5Iae | 1103 | 0 | |
6 | OH 231.8+04.2 | OH* | 07 42 16.947 | -14 42 50.20 | M10III+A | 533 | 0 | |||||
7 | CD-37 4167 | C* | 08 02 04.9975175328 | -38 11 52.160871228 | 14.1 | 10.3 | C-J4 | 50 | 0 | |||
8 | IRAS 08005-2356 | AB* | 08 02 40.7049577608 | -24 04 42.588796404 | 12.454 | 11.139 | 10.930 | F5Iae | 95 | 0 | ||
9 | IRAS 09371+1212 | pA* | 09 39 53.96 | +11 58 52.6 | K7II/III | 160 | 0 | |||||
10 | MR 22 | PN | 10 21 33.85920 | -58 05 47.6628 | A2Ie | 101 | 0 | |||||
11 | IRAS 10481-6930 | OH* | 10 49 47.6869327440 | -69 45 59.955855516 | O-rich | 9 | 0 | |||||
12 | V* V Hya | C* | 10 51 37.2615873024 | -21 15 00.333928044 | 12.23 | 6.80 | 7.42 | C-N:6 | 366 | 0 | ||
13 | HD 101584 | pA* | 11 40 58.8051522552 | -55 34 25.814696232 | 7.80 | 7.40 | 7.01 | B8/9I/IIe | 142 | 0 | ||
14 | IRAS 13328-6244 | OH* | 13 36 18.93096 | -62 59 19.2120 | O-rich | 6 | 0 | |||||
15 | PN MyCn 18 | PN | 13 39 35.0596178496 | -67 22 51.750497136 | 13.30 | 12.54 | 13.19 | 12.61 | ~ | 284 | 1 | |
16 | IRAS 13442-6109 | OH* | 13 47 46.1327197632 | -61 24 29.790086868 | 15.28 | M10 | 19 | 0 | ||||
17 | IRAS 14028-5836 | OH* | 14 06 21.50448 | -58 50 41.8128 | O-rich | 5 | 1 | |||||
18 | IRAS 15303-5456 | OH* | 15 34 10.83048 | -55 06 46.9188 | O-rich | 8 | 0 | |||||
19 | OH 329.14+03.92 | pA* | 15 44 11.06112 | -49 55 22.1412 | ~ | 14 | 0 | |||||
20 | IRAS 15452-5459 | pA* | 15 49 11.3344710672 | -55 08 51.846940176 | O-rich | 31 | 0 | |||||
21 | IRAS 15509-5207 | OH* | 15 54 46.84008 | -52 16 31.0476 | O-rich | 9 | 0 | |||||
22 | OH 337.5+00.1 | OH* | 16 37 02.64216 | -47 00 39.8844 | O-rich | 14 | 0 | |||||
23 | IRAS 16342-3814 | pA* | 16 37 39.8691983808 | -38 20 17.443998996 | ~ | 136 | 0 | |||||
24 | OH 338.5-00.2 | OH* | 16 41 59.48112 | -46 32 12.5520 | O-rich | 15 | 0 | |||||
25 | PN M 2-9 | PN | 17 05 37.96152 | -10 08 32.5068 | ~ | 522 | 0 | |||||
26 | IRAS 17079-3844 | OH* | 17 11 22.7783734920 | -38 48 16.297269012 | O-rich | 8 | 0 | |||||
27 | NGC 6302 | PN | 17 13 44.5 | -37 06 11 | O-rich | 795 | 1 | |||||
28 | IRAS 17253-2831 | OH* | 17 28 32.9579972421 | -28 33 25.835621639 | 13.242 | 11.575 | M4II | 11 | 0 | |||
29 | ESO 455-139 | PN | 17 39 02.9171861568 | -28 56 35.634293412 | 17.2 | ~ | 70 | 0 | ||||
30 | PN Hb 4 | PN | 17 41 52.8002065320 | -24 42 08.330663196 | 18.4 | 17 | [WC4] | 219 | 1 | |||
31 | IRC -30316 | OH* | 17 42 35.0228307552 | -30 05 41.846248248 | 15 | M4 | 37 | 0 | ||||
32 | Hen 3-1475 | PN | 17 45 14.1819342984 | -17 56 46.778166204 | 12.733 | B7e | 198 | 0 | ||||
33 | OH 359.970-00.049 | OH* | 17 45 44.31912 | -28 59 13.2720 | O-rich | 15 | 0 | |||||
34 | OH 000.548-00.059 | OH* | 17 47 08.98176 | -28 29 56.1264 | O-rich | 25 | 0 | |||||
35 | OH 010.04-00.10 | OH* | 18 08 16.38432 | -20 16 11.5608 | O-rich | 33 | 0 | |||||
36 | OH 012.3+00.1 | OH* | 18 12 03.51000 | -18 14 24.0684 | O-rich | 12 | 0 | |||||
37 | OH 020.8+00.5 | OH* | 18 27 23.82144 | -10 30 22.4712 | O-rich | 27 | 0 | |||||
38 | OH 024.0-00.2 | OH* | 18 35 34.54824 | -08 02 40.2000 | O-rich | 9 | 0 | |||||
39 | IRC +10365 | OH* | 18 37 19.2583829328 | +10 25 42.492195300 | 9.97 | M9 | 149 | 0 | ||||
40 | IRAS 18491-0207 | pA* | 18 51 45.89304 | -02 04 10.6572 | ~ | 19 | 0 | |||||
41 | IRAS 18585+0900 | OH* | 19 00 53.8208536488 | +09 05 02.722858728 | O-rich | 21 | 1 | |||||
42 | IRAS 19052+1431 | OH* | 19 07 33.9541245851 | +14 36 47.364274109 | 13.905 | ~ | 11 | 0 | ||||
43 | HD 179821 | pA* | 19 13 58.6082398776 | +00 07 31.935181836 | 10.81 | 9.694 | 8.19 | G4_0-Ia | 239 | 0 | ||
44 | IRC +10420 | pA* | 19 26 48.0979492536 | +11 21 16.758531216 | 13.98 | 11.66 | F8Ia+e | 477 | 0 | |||
45 | PN K 3-35 | PN | 19 27 43.9749997920 | +21 30 02.907990216 | O-rich | 149 | 0 | |||||
46 | Hen 2-437 | PN | 19 32 57.6040534728 | +26 52 43.087922580 | ~ | 96 | 1 | |||||
47 | HD 184738 | PN | 19 34 45.2337620448 | +30 30 58.950651240 | 10.41 | 10.44 | [WC9] | 952 | 0 | |||
48 | HD 187885 | pA* | 19 52 52.7033593752 | -17 01 50.289441096 | 9.25 | 8.68 | 8.32 | F2/6Ia | 179 | 0 | ||
49 | NML Cyg | s*r | 20 46 25.5392819088 | +40 06 59.464289232 | M7/8 | 508 | 0 | |||||
50 | V* V1610 Cyg | pA* | 21 02 18.27 | +36 41 37.0 | F5Iae | 873 | 1 | |||||
51 | IRAS 22036+5306 | pA* | 22 05 30.28608 | +53 21 32.7888 | F4III | 78 | 0 | |||||
52 | V* PZ Cas | s*r | 23 44 03.2814215136 | +61 47 22.190200476 | 12.80 | 11.48 | 8.90 | 6.08 | 3.90 | M3Ia | 202 | 0 |
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