J/ApJS/165/360 SiO maser emission toward 10 late-type stars (Kang+, 2006)
Time monitoring observations of SiO j=2-1 and j=3-2 maser emission toward
late-type stars.
Kang J., Cho S.-H., Kim H.-G., Chung H.-S., Kim H.-R., Roh D.-G.,
Lee C.-W., Kim S.-J.
<Astrophys. J. Suppl. Ser., 165, 360-385 (2006)>
=2006ApJS..165..360K 2006ApJS..165..360K
ADC_Keywords: Stars, late-type ; Spectroscopy ; Millimetric/submm sources
Keywords: circumstellar matter - masers - stars: late-type - stars: oscillations
Abstract:
We present the results of simultaneous time monitoring observations
of SiO J=2-1 and J=3-2 maser emission for 10 late-type stars (8 Mira
variables, 1 OH/IR star, and 1 supergiant) with the 14m radio
telescope at Taeduk Radio Astronomy Observatory from 1999 January
to 2001 February. The SiO v=1, J=2-1 and J=3-2 maser emission was
detected at almost all observational epochs. The SiO v=2, J=2-1 maser
was detected from 4 late-type stars (VY CMa, R Cas, Cyg, R Leo) and
the v=2, J=3-2 maser was detected from 7 stars (R Aqr, TX Cam, R Cas,
Cyg, W Hya, R Leo, IK Tau). The v=3, J=2-1 and masers were also
detected from Cyg and TX Cam, respectively. Based on these
observational data, line profile and peak velocity variations with
respect to stellar velocity, antenna temperatures, and their ratio
variations as a function of optical phase of central star were
investigated. Description:
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 68 10 Observed Sources
table3.dat 69 135 Results of SiO J=2-1 Observations: Detected
table4.dat 69 154 Results of SiO J=3-2 Observations: Detected
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- Name Source name
11- 15 A5 --- Type Type of the star (1)
17- 18 I2 h RAh Right ascension (B1950)
20- 21 I2 min RAm Right ascension (B1950)
23- 26 F4.1 s RAs Right ascension (B1950)
28 A1 --- DE- Declination sign (B1950)
29- 30 I2 deg DEd Declination (B1950)
32- 33 I2 arcmin DEm Declination (B1950)
35- 38 F4.1 arcsec DEs Declination (B1950)
40- 43 F4.1 km/s V* Central star velocity
44 A1 --- r_V* Reference for Vel (2)
46- 51 A6 --- SpType MK spectral type (3)
54- 57 I4 pc Dist Heliocentric Distance
59- 61 I3 pc e_Dist ? rms uncertainty on Dist
62 A1 --- r_Dist Reference for Dist, if not from HIP (I/239) (2)
64- 68 F5.1 d Per ? Period (3)
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Note (1): Type as follows:
M = Miras
SR = semiregular variables
SG = supergiants
OH/IR = stars
Note (2): References as follows:
a = Cho & Ukita (1995PASJ...47L...1C 1995PASJ...47L...1C)
b = Loup et al. (1993, Cat. J/A+AS/99/291)
c = Cho et al. (1996AJ....111.1987C 1996AJ....111.1987C))
d = Engels (1979A&AS...36..337E 1979A&AS...36..337E, Cat. V/18)
e = Marvel (1997PASP..109.1286M 1997PASP..109.1286M)
f = Knapp et al. (1982ApJ...252..616K 1982ApJ...252..616K)
g = Olofsson et al. (1982A&A...107..128O 1982A&A...107..128O)
h = Dickinson et al. (1978AJ.....83...36D 1978AJ.....83...36D)
i = Marengo et al. (1999A&A...348..501M 1999A&A...348..501M)
j = Yates et al. (1995MNRAS.273..529Y 1995MNRAS.273..529Y)
Note (3): From Kholopov et al., 1985, see Cat. II/250.
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Byte-by-byte Description of file: table[34].dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- Name Source name
11- 23 A13 --- Trans Observed transition (1)
25- 29 F5.2 K Tpeak Peak antenna temperature, at transition (1)
31- 34 F4.2 K rms Root-mean-square
36- 41 F6.2 K.km/s Tint Integrated antenna temperature
43- 47 F5.1 km/s Vpeak Peak emission radial LSR velocity
49- 53 F5.1 km/s V-V* Peak LSR velocity minus the central star
velocity
55- 64 A10 "Y/M/D" Obs.Date Date of the observation
66- 69 F4.2 --- Phase ? Optical light curve phase
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Note (1): SiO Transitions and Rest Frequencies Used for Observations:
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Transition Frequency (GHz)
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v=1, J=2-1 86.243442
v=2, J=2-1 85.640456
v=3, J=2-1 85.038010
v=1, J=3-2 129.36337
v=2, J=3-2 128.45889
v=3, J=3-2 127.55524
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Rest frequencies from Lovas & Frank (1992, J. Phys. Chem. Ref. Data, 21, 181)
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 14-Dec-2007