J/A+A/296/727 J/A+A/296/727 Semiregular variables H2O maser M Szymczak D Engels Astron. Astrophys. 296 727 1995 1995A&A...296..727S masers stars: AGB and post-AGB stars: mass-loss surveys 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.

Name Star name --- n_Name * = new detection --- Type Star type --- RAh Right ascension 1950 h RAm Right ascension 1950 min RAs Right ascension 1950 s DE- Declination sign --- DEd Declination 1950.0 deg DEm Declination 1950.0 arcmin DEs Declination 1950.0 arcsec Date Observation date --- Vp Peak velocity or lowest value of Vp when range of velocity (n_Vp='-') km/s n_Vp A '-' indicates a range of velocity --- Vp(high) Highest value of Vp when range of velocity km/s l_Sp limit flag on Sp --- Sp Peak flux Jy u_Sp Uncertainty flag on Sp --- l_DeltaV Limit flag on DeltaV --- DeltaV Velocity range of the maser emission km/s l_Sint Limit flag on Si --- Sint Integrated flux 10-22W/m2 GCVS Name --- n_GCVS * = previously detected as H_2_O maser sources (Dickinson & Dinger 1982; Engels & Lewis in prep.) --- IRAS IRAS designation --- RAh Right ascension 1950 h RAm Right ascension 1950 min RAs Right ascension 1950 s DE- Declination sign --- DEd Declination 1950 deg DEm Declination 1950 arcmin DEs Declination 1950 arcsec Date Observation date --- V1 Lowest velocity of velocity range km/s V2 Highest velocity of velocity range km/s F3sigma Upper limit for peak flux emission (sensitivity) Jy Name Star name --- Date observation date --- v* Star central velocity (from Margulis et al. (1990) and Nyman et al. (1992)) km/s Sb/Si Ratio of the integrated H2O maser emission of the blue component Sb to the total integrated emission Si --- GCVS Name --- Type Variable type --- Period Period d Sp Spectral type --- [12]-[25] IRAS [12]-[25] colour --- D Distance kpc F12 Flux density at 12 {mu}m Jy.kpc2 l_log(LH2O) Limit flag on LH2O --- log(LH2O) H2O luminosity s-1 n_log(LH2O) Note on LH2O: 1 Dickinson & Dinger 1982 2 Engels & Lewis, in prep. --- Ve Expansion velocity inferred from CO data km/s dM/dt Mass loss 10-7solMass/yr tables.texTables 1 to 4 in LaTeX format Patricia Bauer CDS 1994Oct03 J_A+A_296_727.xml