2007A&A...475..941E

Query : 2007A&A...475..941E

2007A&A...475..941E - Astronomy and Astrophysics, volume 475941-948 (2007/12-1)

Lifetime of OH masers at the tip of the asymptotic giant branch.

ENGELS D. and JIMENEZ-ESTEBAN F.

Abstract (from CDS):

A large fraction of otherwise similar asymptotic giant branch stars (AGB) do not show OH maser emission. As shown recently, a restricted lifetime may give a natural explanation as to why only part of any sample emits maser emission at a given epoch. We wish to probe the lifetime of 1612MHz OH masers in circumstellar shells of AGB stars. We reobserved a sample of OH/IR stars discovered more than 28 years ago to determine the number of stars that may have since lost their masers. We redetected all 114 OH masers. The minimum lifetime inferred is 2800 years (1σ). This maser lifetime applies to AGB stars with strong mass loss leading to very red infrared colors. The velocities and mean flux density levels have not changed since their discovery. As the minimum lifetime is of the same order as the wind crossing time, strong variations in the mass-loss process affecting the excitation conditions on timescales of ≃3000 years or less are unlikely.

Abstract Copyright: ∼

Journal keyword(s): stars: AGB and post-AGB - circumstellar matter - masers

CDS comments: OH 28.5-0.0 is a misprint for OH 28.5+0.0.

Simbad objects: 130

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Number of rows : 130
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 OH 127.8-00.0 OH* 01 33 51.21048 +62 26 53.2032           O-rich 188 0
2 3C 48 QSO 01 37 41.2996631208 +33 09 35.080388820   16.62 16.20     ~ 2924 2
3 OH 138.0+07.2 OH* 03 25 08.40648 +65 32 07.0584           O-rich 92 1
4 OH 141.7+03.5 OH* 03 33 30.6174715608 +60 20 08.858343228           O-rich 60 0
5 IRC +10216 C* 09 47 57.40632 +13 16 43.5648           C9,5e 2455 0
6 3C 286 Sy1 13 31 08.2883506368 +30 30 32.960091564   17.51 17.25     ~ 4558 2
7 V* FV Boo OH* 15 08 25.7458537200 +09 36 18.371710980           M9III 72 0
8 OH 010.5+04.5 pA* 17 51 48.9235421885 -17 42 25.758576688       12.816   F7I 18 0
9 PN Sa 3-96 PN 17 55 45.05304 -15 03 42.8220           O-rich 48 2
10 OH 010.9+01.5 OH* 18 03 38.92200 -18 41 10.1616           O-rich 20 0
11 OH 012.8+00.9 pA* 18 10 06.07608 -17 26 34.5480           O-rich 43 0
12 OH 011.54+00.10 OH* 18 10 38.6717322672 -18 52 58.340521200           O-rich 39 0
13 OH 015.4+01.9 OH* 18 11 34.07952 -14 39 53.9136           O-rich 25 0
14 OH 013.4+00.8 OH* 18 12 03.4325686296 -16 55 31.464931296         16.859 O-rich 17 0
15 OH 019.5+04.0 OH* 18 12 22.71816 -10 02 49.6356           O-rich 14 0
16 OH 012.3-00.2 OH* 18 13 08.7335140800 -18 27 49.341992184           O-rich 25 0
17 OH 016.1+01.4 OH* 18 14 51.5361933744 -14 16 18.787163412         17.210 O-rich 15 0
18 OH 015.7+00.8 OH* 18 16 25.77744 -14 55 13.7388           O-rich 77 0
19 OH 012.8-00.9 OH* 18 16 49.21368 -18 15 01.6560           O-rich 54 0
20 OH 020.8+03.1 OH* 18 17 58.56912 -09 18 31.5036           O-rich 20 0
21 OH 015.4-00.1 OH* 18 18 54.02664 -15 34 39.9000           O-rich 9 0
22 OH 018.52+01.41 pA* 18 19 35.4934413600 -12 08 08.193361596       14.28 12.14 F7I 33 0
23 OH 018.7+01.6 OH* 18 19 40.47336 -11 52 58.6632           O-rich 13 0
24 RAFGL 5471 OH* 18 20 36.9828528744 -18 47 09.848348520           O-rich 43 0
25 OH 016.1-00.3 OH* 18 21 06.97512 -15 03 21.6864           O-rich 50 0
26 OH 017.0-00.1 OH* 18 21 49.82112 -14 10 33.5316           O-rich 12 0
27 OH 018.2+00.5 OH* 18 21 56.29488 -12 55 20.8920           O-rich 13 0
28 OH 018.2+00.4 OH* 18 22 43.08192 -12 47 41.5356           O-rich 42 0
29 OH 018.3+00.1 OH* 18 23 26.60400 -12 49 38.3088           O-rich 7 0
30 OH 020.4+01.4 OH* 18 23 28.7500084032 -10 27 20.398464684           O-rich 15 1
31 OH 017.4-00.3 OH* 18 23 35.00496 -13 55 49.1448           O-rich 18 0
32 OH 018.8+00.4 OH* 18 24 05.32632 -12 26 12.2856           O-rich 25 0
33 OH 017.2-01.1 OH* 18 26 10.48608 -14 28 20.0208           O-rich 12 0
34 OH 017.1-01.2 OH* 18 26 15.8509636658 -14 42 26.607847486   15.009 13.010 12.546   O-rich 21 0
35 OH 020.6+00.3 OH* 18 27 56.34144 -10 46 54.0804           O-rich 19 0
36 OH 020.2-00.1 OH* 18 28 13.89960 -11 16 09.4944           O-rich 52 0
37 OH 020.7+00.1 OH* 18 28 30.83160 -10 50 52.5912           O-rich 51 0
38 OH 021.5+00.5 OH* 18 28 30.93720 -09 58 14.3184           O-rich 97 0
39 OH 019.2-01.0 OH* 18 29 28.7275536432 -12 37 53.104039788           O-rich 51 0
40 OH 021.9+00.4 OH* 18 29 30.74688 -09 39 48.7368           O-rich 6 0
41 OH 020.4-00.3 OH* 18 29 35.56008 -11 15 53.9856           O-rich 33 0
42 OH 023.7+01.2 OH* 18 30 06.96240 -07 36 51.5880           O-rich 42 0
43 OH 017.7-02.0 pA* 18 30 30.703 -14 28 57.04           O-rich 145 1
44 OH 020.8-00.8 OH* 18 31 23.1448168272 -11 09 54.660714624           O-rich 9 0
45 OH 024.2+00.6 OH* 18 33 09.7677332518 -07 27 58.425011534           O-rich 34 1
46 IRC -10434 Mi* 18 33 10.4329565808 -07 26 17.138213304       12.62   M7: 34 1
47 OH 020.3-01.5 OH* 18 33 34.1832966093 -11 56 43.299799732           O-rich 19 0
48 OH 022.1-00.6 OH* 18 33 34.59576 -09 57 35.8164           O-rich 18 0
49 OH 023.7+00.2 OH* 18 33 49.60584 -08 04 01.2072           O-rich 28 0
50 OH 023.1-00.3 OH* 18 34 11.32152 -08 58 02.4852           O-rich 20 0
51 OH 024.5+00.3 OH* 18 35 19.06032 -07 19 23.2752           O-rich 13 0
52 OH 024.7+00.3 OH* 18 35 29.21616 -07 13 10.9740           O-rich 40 0
53 OH 024.7+00.1 OH* 18 35 57.49368 -07 18 56.8584           O-rich 12 0
54 OH 025.5+00.4 OH* 18 36 43.95672 -06 27 24.0984           O-rich 12 0
55 OH 024.7-00.1 OH* 18 36 45.91944 -07 18 18.1152           O-rich 21 0
56 OH 026.5+00.6 OH* 18 37 32.50920 -05 23 59.1936           O-rich 308 1
57 OH 025.1-00.3 OH* 18 38 15.46080 -07 09 54.3708           O-rich 45 0
58 OH 026.3+00.1 OH* 18 38 38.7734005776 -05 49 09.223667827         11.955 O-rich 25 0
59 OH 023.8-01.1 OH* 18 38 39.81192 -08 41 11.4540           O-rich 18 0
60 OH 025.5-00.3 OH* 18 38 50.54280 -06 44 49.6068           O-rich 24 0
61 IRAS 18361-0647 mul 18 38 50.7 -06 44 54           ~ 23 0
62 OH 027.2+00.2 OH* 18 40 16.35840 -05 02 38.7744           O-rich 16 0
63 OH 027.3+00.2 OH* 18 40 21.69565 -04 57 12.4679           O-rich 25 0
64 OH 022.3-02.5 OH* 18 40 38.56776 -10 42 34.0452           O-rich 8 0
65 OH 026.2-00.6 OH* 18 41 14.33376 -06 15 00.6012           O-rich 62 0
66 OH 027.0-00.4 OH* 18 42 01.91160 -05 21 08.2116           O-rich 20 0
67 OH 024.7-01.7 OH* 18 42 21.99840 -08 04 59.6064           O-rich 11 0
68 OH 028.5-00.0 OH* 18 43 25.79544 -03 55 55.2720           O-rich 31 0
69 OH 027.5-00.9 s*r 18 44 41.6544370728 -05 09 17.031708936       15.77 12.69 M1I 41 0
70 OH 028.6-00.6 OH* 18 45 48.4337580888 -04 00 46.329314436         17.12 O-rich 58 0
71 OH 030.7+00.4 OH* 18 45 52.39728 -01 46 42.4776           O-rich 71 1
72 OH 026.4-02.0 OH* 18 46 26.79792 -06 40 33.7512           O-rich 59 0
73 OH 032.1+00.9 OH* 18 46 38.75736 -00 17 13.1136           O-rich 18 0
74 OH 030.1-00.2 OH* 18 47 09.85344 -02 35 36.0492           O-rich 55 0
75 OH 027.8-01.5 OH* 18 47 37.7280672432 -05 11 08.287197252           O-rich 21 0
76 OH 031.0+00.0 OH* 18 47 41.13768 -01 45 11.4048           O-rich 153 1
77 OH 029.4-00.8 OH* 18 47 50.04192 -03 29 31.4232           O-rich 24 0
78 IRAS 18455+0448 OH* 18 48 02.3030850840 +04 51 30.484399068           O-rich 30 0
79 OH 030.1-00.7 OH* 18 48 41.98728 -02 50 29.5080           O-rich 107 0
80 OH 031.0-00.2 OH* 18 48 43.01976 -01 48 30.1464           O-rich 57 0
81 OH 031.5-00.1 OH* 18 49 05.0760 -01 17 03.264           ~ 14 0
82 OH 026.4-02.8 OH* 18 49 16.81536 -07 13 50.3400           O-rich 11 0
83 OH 034.7+00.9 OH* 18 51 15.95496 +01 56 19.6476           O-rich 22 0
84 OH 032.0-00.5 OH* 18 51 26.25600 -01 03 52.3620           O-rich 70 0
85 OH 031.7-00.8 OH* 18 52 01.4482614360 -01 26 46.218656148         16.506 O-rich 40 0
86 OH 034.9+00.8 OH* 18 52 15.37392 +02 03 48.5748           O-rich 16 0
87 OH 032.8-00.3 OH* 18 52 22.25472 -00 14 11.8428           O-rich 126 0
88 OH 033.4-00.0 OH* 18 52 27.96192 +00 27 28.3392           O-rich 7 0
89 OH 036.9+01.3 OH* 18 54 16.1186240976 +04 02 31.639057512         16.979 O-rich 25 0
90 OH 040.1+02.4 OH* 18 55 56.96736 +07 30 30.2724           O-rich 34 0
91 OH 036.4+00.3 OH* 18 56 36.41808 +03 06 51.6492           O-rich 27 0
92 OH 035.6-00.3 OH* 18 57 27.47184 +02 12 16.9740           O-rich 50 0
93 RAFGL 2290 OH* 18 58 30.0951077544 +06 42 57.696212124           O-rich 131 0
94 IRAS 18578+0616 MIR 19 00 19.42680 +06 20 45.9204           ~ 2 0
95 IRAS 18579+0612 IR 19 00 24.6 +06 16 30           ~ 3 0
96 IRAS 18584+0616 Mi* 19 00 55.6249916520 +06 21 05.760896940         17.005 ~ 7 0
97 OH 037.1-00.8 OH* 19 02 06.28560 +03 20 15.9900           O-rich 77 0
98 OH 039.9-00.0 OH* 19 04 09.74928 +06 13 16.3956           O-rich 67 0
99 OH 035.2-02.6 pA* 19 05 02.0381133528 +00 48 50.467761000         14.36 G0-5 48 0
100 OH 037.7-01.4 OH* 19 05 09.76272 +03 40 58.9044           O-rich 18 0
101 OH 043.9+01.2 OH* 19 06 42.8813579983 +10 14 32.346373749           O-rich 31 0
102 OH 042.6+00.0 OH* 19 08 58.6871509171 +08 37 45.429041199           O-rich 47 1
103 OH 042.3-00.1 OH* 19 09 08.32632 +08 16 33.6504           O-rich 90 0
104 OH 043.8+00.5 OH* 19 09 31.85832 +09 51 48.4596           O-rich 33 0
105 OH 043.6-00.5 OH* 19 12 47.0029148112 +09 18 24.410084976         16.399 O-rich 15 0
106 IRAS 19108+0815 IR 19 13 15.8 +08 20 17           ~ 4 0
107 OH 042.8-01.0 OH* 19 13 37.8538852080 +08 21 47.466000635           O-rich 6 0
108 RAFGL 2345 Cld 19 14 08.6 +11 12 27           ~ 64 0
109 OH 045.5+00.1 OH* 19 14 19.61808 +11 10 35.3280           O-rich 65 0
110 OH 043.9-01.0 OH* 19 15 16.36056 +09 15 45.8100           O-rich 18 0
111 OH 052.4+01.8 OH* 19 21 31.63512 +18 10 09.5700           ~ 15 0
112 OH 044.8-02.3 OH* 19 21 36.6364189224 +09 27 56.688388992           O-rich 92 0
113 OH 051.8-00.2 OH* 19 27 42.03672 +16 37 23.9520           O-rich 42 0
114 OH 055.0+00.7 OH* 19 30 29.47536 +19 50 41.0352           O-rich 53 0
115 OH 053.6-00.2 pA* 19 31 25.3792354239 +18 13 10.137422985           B? 37 0
116 OH 057.5+01.8A OH* 19 31 38.97432 +22 35 17.2248           O-rich 29 0
117 OH 057.5+01.8B C* 19 31 45.5807303448 +22 33 42.841426356           C 29 0
118 IRAS 19479+2111 OH* 19 50 07.3022621808 +21 19 04.340598924           O-rich 19 0
119 OH 065.5+01.3 OH* 19 51 21.1918567162 +29 13 01.194213732           O-rich 46 1
120 OH 063.9-00.2 OH* 19 52 57.8642500512 +27 07 44.586889068           O-rich 39 1
121 IRAS 19529+3634 OH* 19 54 44.2897545408 +36 42 15.623339184           ~ 15 0
122 OH 065.7-00.8 OH* 19 59 39.14304 +28 23 07.2996           O-rich 35 0
123 OH 066.8-01.3 OH* 20 04 20.73672 +29 04 06.5064           O-rich 29 0
124 OH 077.9+00.2 OH* 20 28 30.67704 +39 07 00.9264           ~ 25 0
125 OH 075.3-01.8 OH* 20 29 08.58696 +35 45 43.4916           O-rich 42 0
126 NML Cyg s*r 20 46 25.5392819088 +40 06 59.464289232           M7/8 527 0
127 OH 083.4-00.9 OH* 20 50 58.6238158104 +42 48 11.510112924           O-rich 48 2
128 OH 085.4+00.1 OH* 20 53 38.06904 +44 58 07.2408           ~ 11 0
129 V* U Equ pA* 20 57 16.2828486240 +02 58 44.540043312   14.324 13.576 14.168   O-rich 66 0
130 RAFGL 2885 OH* 22 19 27.47784 +59 51 21.7080           O-rich 140 0

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