1997A&A...322..159S

Query : 1997A&A...322..159S

1997A&A...322..159S - Astronomy and Astrophysics, volume 322159-166 (1997/6-1)

H2O maser emission from irregular variables.

SZYMCZAK M. and ENGELS D.

Abstract (from CDS):

We have performed a search for the 22 GHz water maser line among 72 optically identified irregular and semiregular red variables. New detections were made of five stars, while only four of nine objects previously known as maser sources were redetected. The probability for the detection of H2O maser emission increases with V light amplitude, and with H-K and K-[12] colours just as in regular Mira and semiregular variables of SRa- and SRb-types. The detection rate of water masers is about 25% for nearby Lb objects (D<400 pc) in the sample, comparable to that observed in the SRa and SRb stars. No masers were detected in objects with mass loss rates ≤4x10–8M☉/yr. Maser luminosities are 1041-1043photons/s similar to that of the bluest Miras and typical SRa and SRb stars showing water maser emission. A comparison of our data on irregular stars with those previously obtained on SRa and SRb variables suggests that most radio and infrared properties are indistinguishable among both classes of objects.

Abstract Copyright: ∼

Journal keyword(s): masers - stars: circumstellar matter - stars: mass-loss - stars: AGB, post-AGB - radio lines: stars

VizieR on-line data: <Available at CDS (J/A+A/322/159): table2>

Simbad objects: 75

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Number of rows : 75
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 V* T Psc AB* 00 32 01.0995827064 +14 36 04.930149564   12.74 11.33     M5 21 0
2 V* TW Psc AB* 00 39 46.0013546928 +14 12 01.220350896   10.65 9.29     M8 27 0
3 HD 7733 AB* 01 18 13.8837368760 +57 48 11.400917472   8.05 6.52     M4II 47 1
4 V* ST Psc AB* 01 27 49.6277966280 +16 42 08.954189928   10.96 9.69     M5 28 0
5 V* CE And AB* 01 29 33.2705595168 +46 39 33.032270376   11.65 10.13     M5 27 0
6 V* RY Ari AB* 02 02 28.4176013616 +16 16 10.745994288   11.08 9.67     M6 20 0
7 V* AE Per AB* 03 00 10.8201522576 +44 08 15.994525524   11.06 9.58     M7 15 0
8 V* UZ Per AB* 03 20 05.9880131928 +32 01 17.981078880   10.65 8.90     M5II-III 40 0
9 V* RU Per AB* 03 30 30.2814448416 +39 39 29.222690472   11.94 10.58     M4 33 0
10 V* RV Eri AB* 04 06 50.0248837344 -07 40 24.081388104   11.25 10.10     M7 12 0
11 V* BX Eri AB* 04 40 32.7673925136 -14 12 02.527783848   11.67 10.51     M7 28 0
12 V* VZ Eri Mi* 04 41 48.0762944016 -07 57 18.640654920   13.60 11.68     M7 15 0
13 V* AP Cam AB* 04 54 59.6818529112 +74 17 27.090922344   11.74 10.42     M6.5 6 0
14 V* EE Aur AB* 05 20 55.4858878032 +35 05 21.014306808           M6 13 0
15 V* V535 Ori S* 05 23 20.6822752152 -04 34 14.393660412   11.71 10.01     M4wkS 35 1
16 V* V440 Ori AB* 05 28 23.2292270520 +08 41 27.708948168     11.06     M5 14 0
17 V* IX Aur LP* 05 36 08.3370284640 +38 01 59.960019432   12.02 10.66 8.59   M7 12 0
18 V* FX Ori AB* 05 41 55.0845180480 +14 50 01.987012068   10.68 9.17     M5: 20 0
19 V* V352 Ori AB* 06 01 46.9216393272 -02 21 13.548749112   9.384 8.970 7.529   M6III 33 0
20 NAME Mon R2 HII 06 07 47.58 -06 22 42.6           ~ 789 2
21 V* AQ Gem AB* 06 28 59.8687553904 +16 35 54.129301692   12.23 10.85     M6.5 13 0
22 V* DW Gem AB* 06 30 59.8442391768 +27 27 07.548412320   10.81 9.69     M8 34 0
23 V* AX Gem AB* 06 37 06.7577146680 +21 07 03.496585188   10.72 9.45     M5 20 0
24 V* DY CMa AB* 06 42 37.5817687464 -14 27 18.865521360   11.03 9.79     M7 12 0
25 V* DE Gem AB* 06 43 39.4907890080 +22 56 06.789099660   11.51 10.01     M4 10 0
26 V* V517 Mon AB* 06 50 52.5046467456 -00 04 23.498189940   11.09 8.872     M2.8Ib-II 18 0
27 V* QR Mon AB* 06 54 06.3338810736 +00 47 36.469516560   10.99 9.584     M7 23 0
28 V* GG Gem AB* 07 02 40.8504834768 +17 29 37.373739864   12.32 11.17     M4 19 0
29 V* ZZ CMi LP* 07 24 13.9974457224 +08 53 51.786973752   11.10 10.20     M6I-IIep 59 0
30 V* SS Lyn AB* 08 05 55.4636262576 +51 41 13.584274548   11.19 9.87     M5 9 0
31 V* BG Pup AB* 08 07 43.1494926240 -20 41 01.268570796   10.38 9.07     M2 10 0
32 V* FZ Hya AB* 08 21 33.3029607696 +04 57 30.246288984   10.01 9.078 8.799   M 31 0
33 V* FK Hya AB* 08 24 27.8559201312 -08 31 12.644608908   8.93 7.63     M6III 41 0
34 V* UV Cnc AB* 08 38 46.6913826864 +21 09 34.036743816   10.51 9.07     M0 23 0
35 V* EY Hya Mi* 08 46 21.2058337320 +01 37 56.041768380   10.73 9.37     M7 52 0
36 V* CW Cnc AB* 09 08 26.5433288712 +13 13 13.597473180   10.23 9.15     M6 59 0
37 V* TU Pyx AB* 09 10 15.7520082384 -19 54 50.421975300   10.97 9.50     M5 16 0
38 V* RS LMi AB* 09 28 33.7853133744 +36 09 38.590179696   9.96 8.51     M7 21 0
39 V* RR Sex LP* 09 54 53.6689369128 +05 11 51.783264240   10.75 9.44     M2 11 0
40 V* UY Leo LP* 10 29 21.6231456936 +23 03 43.557694164   10.95 9.84     M7III: 26 0
41 V* CT UMa AB* 10 34 17.4246456072 +69 45 52.073846604   11.41 10.25     M6 18 0
42 V* FF Hya AB* 10 37 51.7988343888 -12 01 15.290505768   10.05 8.86     M7III 24 0
43 V* CS Dra AB* 11 15 55.9095407256 +75 08 34.579113936   12.19 10.62     M5 33 0
44 V* AZ UMa LP* 11 47 13.8036159360 +43 28 15.933812664   10.02 8.74     M6 54 0
45 V* RU Crt AB* 11 51 06.4589026632 -11 12 28.190407860   9.30 8.13     M4/5III 34 0
46 V* RW Vir AB* 12 07 14.9021005464 -06 45 56.074133880   8.60 7.18     M5II 50 0
47 V* CH Vir AB* 12 20 21.3812381016 -09 00 00.085003812   10.67 9.28     M4III 19 0
48 V* BK Vir AB* 12 30 21.0136448232 +04 24 59.142255840 9.60 8.82 7.28     M7-III: 159 0
49 V* CI Vir AB* 12 33 08.2785201408 +07 15 00.773149644   10.74 9.51     M6 14 0
50 V* CO Vir AB* 13 03 55.7786003904 +07 04 05.359856016   10.23 9.019 8.29   M8 13 0
51 V* SY CVn AB* 13 10 20.3169322608 +47 02 28.051910196   11.04 9.86     ~ 24 0
52 V* UW UMa AB* 13 12 01.5069140568 +56 22 48.470519784   12.27 10.68     M6 14 0
53 3C 286 Sy1 13 31 08.2883506368 +30 30 32.960091564   17.51 17.25     ~ 4558 2
54 V* WY Boo AB* 13 59 38.4800126112 +27 47 14.498970648   11.78 10.72     M6+ 20 0
55 IRC +50249 Mi* 16 06 44.5271118072 +48 42 24.255715788   13.5       M8 17 0
56 BD-01 3133 Mi* 16 08 34.8163683096 -01 32 14.274926124   11.36 9.96 7.75   M6 26 0
57 V* BR Sco AB* 16 13 13.4391285456 -10 20 15.645758964   10.80 9.17     M3III 11 0
58 V* TV Dra AB* 17 08 24.5029355616 +64 19 08.745822588   11.02 9.68     M8S: 47 0
59 V* TY Dra AB* 17 37 00.1116207432 +57 44 25.309145436   10.61 9.30     M8 56 0
60 V* V508 Her LP* 17 38 20.0288239464 +31 40 38.184686220   11.24 9.74     M7 4 0
61 V* AV Oph AB* 18 08 36.8283046248 +05 17 15.273120480           M7 10 0
62 V* QS Her LP* 18 13 18.6871088472 +34 55 18.056329824   12.32 11.02     M2 9 0
63 V* V454 Oph AB* 18 13 33.1607166768 +12 28 03.534795732   11.58 10.62     M4 21 0
64 V* TU Lyr AB* 18 20 30.2775855816 +31 45 21.245761908   11.38 10.13     M6-7e 33 0
65 IRC +00349 Mi* 18 23 52.2046011744 +03 37 22.710713520     15.5 11.96   M8 30 0
66 V* PV Aql AB* 19 59 49.7065611936 +10 31 18.316174008   12.29 10.74     M2 11 0
67 V* AV Vul AB* 20 26 06.4098446568 +26 14 16.846980792   11.40 10.36     M5 14 0
68 V* U Del AB* 20 45 28.2357324504 +18 05 24.138355308 9.30 8.06 6.38     M4-6II-III 134 0
69 V* FI Vul LP* 20 48 51.1881931656 +22 59 38.957906976   8.94 7.67     M3 31 0
70 NGC 7027 PN 21 07 01.571952 +42 14 10.47120   10.358 8.831 10.157   ~ 2541 1
71 V* TW Peg AB* 22 03 59.5129191840 +28 20 54.251069136   8.66 7.50     M6-7III 135 0
72 V* UW Peg AB* 22 18 10.6981993944 +02 43 50.284886016   11.00 9.65     M7 34 0
73 V* GM Peg AB* 22 30 28.2811644000 +13 06 18.148478076   11.99 10.82     M8 15 0
74 V* ST Peg AB* 22 49 04.5486293952 +27 21 28.763867592   10.20 8.85     M6:III 28 0
75 V* SV Aqr AB* 23 22 45.3630843744 -10 49 00.064750908   10.91 9.83     M8 39 0

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