J/A+A/296/727 Semiregular variables H2O maser (Szymczak+, 1995)
H2O maser emission from semiregular variables
SZYMCZAK M., ENGELS D.
<Astron. Astrophys. 296, 727 (1995)>
=1995A&A...296..727S 1995A&A...296..727S (SIMBAD/NED Reference)
ADC_Keywords: Stars, variable; Masers; Radial velocities
Keywords: masers - stars: AGB, post-AGB - stars: mass-loss - surveys
Description:
107 semiregular variables of spectral type M have been observed in the
H2O 6(16)-5(23) line at 22.235GHz with the 100m Effelsberg radio
telescope and maser emission has been detected in 23 objects, of which
10 are new detections.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1 73 113 Semiregulars with H2O maser emission
table2 78 131 Semiregulars not detected as H2O maser sources
table3 22 13 Asymetry of H2O maser lines
table4 64 26 Properties of the H2O maser semiregular
variables
tables.tex 149 408 Tables 1 to 4 in LaTeX format
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table1
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 7 A7 --- Name Star name
9 A1 --- n_Name [ *] * = new detection
11- 13 A3 --- Type Star type
15- 16 I2 h RAh Right ascension 1950
18- 19 I2 min RAm Right ascension 1950
21- 24 F4.1 s RAs Right ascension 1950
26 A1 --- DE- Declination sign
27- 28 I2 deg DEd Declination 1950.0
30- 31 I2 arcmin DEm Declination 1950.0
33- 34 I2 arcsec DEs Declination 1950.0
36- 40 A5 --- Date Observation date
42- 46 F5.1 km/s Vp ? Peak velocity or lowest value of Vp
when range of velocity (n_Vp='-')
47 A1 --- n_Vp [- ] A '-' indicates a range of velocity
48- 51 F4.1 km/s Vp(high) ? Highest value of Vp when range of velocity
53 A1 --- l_Sp [ ~<] limit flag on Sp
54- 58 F5.1 Jy Sp Peak flux
59 A1 --- u_Sp Uncertainty flag on Sp
61 A1 --- l_DeltaV [ ~] Limit flag on DeltaV
62- 65 F4.1 km/s DeltaV ? Velocity range of the maser emission
69 A1 --- l_Sint Limit flag on Si
70- 73 I4 10-22W/m2 Sint ? Integrated flux
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table2
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 9 A9 --- GCVS Name
12 A1 --- n_GCVS [ *] * = previously detected as H2O maser
sources (Dickinson & Dinger 1982;
Engels & Lewis in prep.)
14- 23 A10 --- IRAS IRAS designation
28- 29 I2 h RAh Right ascension 1950
31- 32 I2 min RAm Right ascension 1950
34- 37 F4.1 s RAs Right ascension 1950
44 A1 --- DE- Declination sign
45- 46 I2 deg DEd Declination 1950
48- 49 I2 arcmin DEm Declination 1950
51- 52 I2 arcsec DEs Declination 1950
54- 58 A5 --- Date Observation date
62- 65 I4 km/s V1 Lowest velocity of velocity range
67- 69 I3 km/s V2 Highest velocity of velocity range
76- 78 F3.1 Jy F3sigma Upper limit for peak flux emission
(sensitivity)
------------------------------------------------------------------------------
Byte-by-byte Description of file: table3
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 6 A6 --- Name Star name
8- 12 A5 --- Date observation date
15- 17 I3 km/s v* Star central velocity (from Margulis et al.
(1990) and Nyman et al. (1992))
19- 22 F4.2 --- Sb/Si Ratio of the integrated H2O maser emission of
the blue component Sb to the total integrated
emission Si
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table4
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 9 A9 --- GCVS Name
12- 14 A3 --- Type Variable type
19- 21 I3 d Period Period
23- 26 A4 --- Sp Spectral type
28- 32 F5.2 --- [12]-[25] IRAS [12]-[25] colour
35- 38 F4.2 kpc D Distance
40- 43 F4.2 Jy.kpc2 F12 Flux density at 12 µm
45 A1 --- l_log(LH2O) Limit flag on LH2O
46- 49 F4.1 [ct/s] log(LH2O) H2O luminosity
51 A1 --- n_log(LH2O) Note on LH2O:
1 Dickinson & Dinger 1982
2 Engels & Lewis, in prep.
55- 58 F4.1 km/s Ve ? Expansion velocity inferred from CO
data
61- 64 F4.2 10-7solMass/yr dM/dt Mass loss
--------------------------------------------------------------------------------
References:
Dickinson & Dinger 1982, ApJ, 254, 136
Engels & Lewis, in prep.
Margulis et al. (1990),
Nyman et al., 1992, A&AS, 93, 1
--------------------------------------------------------------------------------
(End) Patricia Bauer [CDS] 03-Oct-1994