2013AJ....145..131M


C.D.S. - SIMBAD4 rel 1.7 - 2020.06.02CEST03:16:14

2013AJ....145..131M - Astron. J., 145, 131 (2013/May-0)

A comparison of the velocity parameters of SiO V = 1, J = 1-0, and J = 2-1 maser emission in long period variables.

McINTOSH G. and INDERMUEHLE B.

Abstract (from CDS):

We present an analysis of velocity parameters derived from multi-epoch observations of the SiO maser spectra of 47 long period variables (LPVs). The velocity parameters are important to inform and constrain theoretical models of SiO maser emission and to extract information on binary orbits. Mira and R Aquarii (R Aqr) are two known binaries included in the program. The 47 LPVs are among 121 sources of the Australia Telescope National Facility Mopra telescope's monitoring program. Observations were carried out several times a year between 2008 and 2012 and are continuing. The SiO spectra are from the v = 1, J = 1-0 (43.122 GHz; hereafter J10) and the v = 1, J = 2-1 (86.2434 GHz; hereafter J21) transitions. For 41 of the 47 LPVs we observed both transitions nearly simultaneously in 457 observations. We have determined and compared the velocity centroids (VCs) and velocity ranges (VRs) of emission suffixed as above (10 and 21) for the two transitions: VC10, VC21, VR10, and VR21. The VCs of the two transitions are, on average, within 0.13 km/s of each other but are sometimes separated by a few km/s. The VC10s are, on average, slightly more positive than the VC21s. The values of the VCs in the two transitions have been compared to justify using both of these transitions to extract binary star orbital parameters. The arithmetic mean VR10 derived from 635 observations of 47 sources is 6.4 km/s with a standard deviation of 3.4 km/s, while the mean VR21 derived from 485 observations of 41 sources is 4.2 km/s with a standard deviation of 2.8 km/s. The number of occurrences of VR10 and VR21 versus VR have different distributions. The differences in the VRs indicate that the J21 and J10 emissions arise from dynamically different regions of the circumstellar environment.

Abstract Copyright:

Journal keyword(s): masers - stars: late-type - stars: variables: general

Status at CDS:  

Simbad objects: 52

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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 - 2020
#notes
1 V* Z Peg Mi* 00 00 06.5625372293 +25 53 11.250438320   10.13 7.30     M7-8e 98 0
2 V* S Scl Mi* 00 15 22.2668636998 -32 02 42.963790849   9.98 6.20     M7/8IIIe 132 0
3 IRC +10011 OH* 01 06 25.9889735162 +12 35 52.890666456   20.7   18.26 14.01 M8 395 0
4 V* R Psc Mi* 01 30 38.3128180271 +02 52 53.851548498   12.40 7.00 10.02   M4-8e 88 0
5 * omi Cet Mi* 02 19 20.79210 -02 58 39.4956   7.63 6.53 5.03   M5-9IIIe+DA 1429 0
6 V* R Cet Mi* 02 26 02.3158911150 -00 10 41.797348953   10.5 7.20     M4-5e 131 0
7 V* R Hor Mi* 02 53 52.7746504509 -49 53 22.732999275     3.92 4.99 1.51 M5-7e 169 0
8 V* W Eri Mi* 04 11 31.0251887897 -25 08 02.296637329   10.62 7.50   8.20 M7e 109 1
9 V* R Tau Mi* 04 28 18.0020756878 +10 09 44.768248740   11.64 7.60     M6.5-9e 130 0
10 V* R Cae Mi* 04 40 30.0842836556 -38 14 06.919611420   11.1 6.70     M6e 87 0
11 V* TX Cam Mi* 05 00 51.1569959503 +56 10 54.093107078       14.02   M9-9.5 326 0
12 V* T Lep Mi* 05 04 50.8454453444 -21 54 16.512268623   10.99 7.40     M6ev 134 0
13 V* S Pic Mi* 05 10 57.2443296813 -48 30 25.442700775   10.46 6.50     M7e 81 0
14 V* R Oct Mi* 05 26 06.1902147171 -86 23 17.737803680   10.23 6.40     M5.5e 83 0
15 V* S Ori Mi* 05 29 00.8928870060 -04 41 32.766731136   10.44 7.20     M6.5-7.5e 186 0
16 V* S Col Mi* 05 46 56.3071200737 -31 41 28.351121384   11.98 11.01     M8 65 0
17 V* U Ori Mi* 05 55 49.1689920441 +20 10 30.690374867 6.82 6.39 5.40     M6-9.5e 470 0
18 * L02 Pup AB* 07 13 32.3181035 -44 38 23.062946 7.90 6.66 5.10 2.49 0.07 M5IIIe 187 0
19 V* R Cnc Mi* 08 16 33.8242753267 +11 43 34.518296107 10.66 10.17 8.64 4.91 1.95 M6.5-9e 273 2
20 V* W Cnc Mi* 09 09 52.6126428910 +25 14 53.800361754   10.86 7.40     M6.5-9e 121 0
21 V* R Car Mi* 09 32 14.5996404553 -62 47 20.045197073 8.51 7.40 6.10 5.44 2.90 M5-8 162 1
22 V* X Hya Mi* 09 35 30.2649838030 -14 41 28.638849297   10.02 7.20     M7-8+e 137 0
23 V* R LMi Mi* 09 45 34.2832012840 +34 30 42.836146420   10.96 9.99     M6.5-9e 307 0
24 V* R Leo Mi* 09 47 33.4839808805 +11 25 43.823283729 9.22 8.94 7.53 3.39 0.12 M7-9e 869 1
25 V* W Leo Mi* 10 53 37.4324496 +13 42 54.366634   12.03 10.58 11.89   M5.5e 80 0
26 V* X Cen Mi* 11 49 11.7851307174 -41 45 27.276351458   11.42 7.00     M6.5e 67 0
27 V* T Vir Mi* 12 14 36.6817920319 -06 02 08.751401011     9.00     M6+e 78 0
28 V* R Hya Mi* 13 29 42.7818674 -23 16 52.774679 7.26 6.58 4.97 2.27 -0.15 M6-9e 459 0
29 V* S Vir Mi* 13 33 00.1102954182 -07 11 41.038747753 8.87 7.96 6.68     M6-7e 171 0
30 V* RU Hya Mi* 14 11 34.3986121 -28 53 07.408925   11.38 7.20     M6.5e 120 0
31 V* RS Vir Mi* 14 27 16.3931666073 +04 40 41.085779853   10.27 7.00     M8 197 0
32 V* S Ser Mi* 15 21 39.5334128329 +14 18 53.107019821   12.37 11.37     M5e 109 0
33 V* RS Lib Mi* 15 24 19.7909563744 -22 54 39.822052678   10.59 7.00     M7-8e 117 0
34 V* R Ser Mi* 15 50 41.7324496273 +15 08 01.081033567   8.49 7.10     M5-8e 219 0
35 V* RU Her Mi* 16 10 14.5132543956 +25 04 14.304088410   13.82 12.24 7.56 4.15 M6-7e 204 0
36 V* U Her Mi* 16 25 47.4723609675 +18 53 32.862370166 8.85 8.23 6.70     M6.5-8+e 512 1
37 V* T Oph Mi* 16 33 43.5501036538 -16 07 54.218718221     8.80     M6.5e 56 0
38 V* X Oph Mi* 18 38 21.1317164384 +08 50 02.799217980 8.61 7.72 6.40     M0-8e+K2:III 266 1
39 V* R Aql OH* 19 06 22.2510506325 +08 13 48.000441251 8.06 7.69 6.09     M6.5-9e 538 0
40 V* RT Aql Mi* 19 38 01.6039274399 +11 43 18.225231306   11.08 7.60     M7-7.5e 131 0
41 V* S Pav Mi* 19 55 13.9622335061 -59 11 44.310533941   9.25 8.21     M8III 79 0
42 V* RR Sgr Mi* 19 55 56.4371077458 -29 11 24.100441056 8.55 7.66 6.15     M6-7e 109 0
43 V* RR Aql Mi* 19 57 36.0628075265 -01 53 11.322802573     7.80     M7.5e 275 2
44 V* RU Cap Mi* 20 32 34.0944050207 -21 41 25.567558042     12     M9 43 0
45 V* X Cyg cC* 20 43 24.1918662954 +35 35 16.075732392 8.69 7.70 6.47   5.241 F7Ib 433 0
46 V* W Aqr Mi* 20 46 25.0734441472 -04 05 00.426423689     11     M6 57 0
47 V* V Peg Mi* 22 01 02.6135433973 +06 07 11.053481986     7.00     M6-6.5e 51 0
48 V* S Gru Mi* 22 26 05.4746654015 -48 26 18.743971332 7.72 7.35 6.00 8.89   M8(III)e 75 1
49 V* R Peg Mi* 23 06 39.1651966075 +10 32 36.077521179 9.43 9.07 7.79 4.87 2.35 M6-8.5e 210 0
50 V* W Peg Mi* 23 19 50.5023227655 +26 16 43.669314548   10.69 7.60     M6.5-7.5e 108 0
51 V* R Aqr Sy* 23 43 49.4629939776 -15 17 04.184232557   8.823 7.683 9.37   M6.5-8.5e 736 0
52 V* R Cas Mi* 23 58 24.8700291935 +51 23 19.691977266 6.71 6.63 4.80     M6.5-9e 675 0

    Equat.    Gal    SGal    Ecl

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2020.06.02-03:16:14

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