The 3 micron spectrum of R Doradus observed with the ISO-SWS
作者： N. Ryde , K. Eriksson
DOI: 10.1051/0004-6361:20020210
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摘要: We have modeled the 2:6{3:7m spectrum of red semiregular variable R Doradus observed with Short-Wavelength Spectrometer on board Infrared Space Observatory. The wavelength resolution observations varies between 2000{2500. calculated a synthetic using hydrostatic model photosphere in spherical geometry. agreement and ISO is encouraging, especially region 2:8{3:7m, suggesting that adequate for calculation spectra near infrared this moderately varying giant star. However, an additional absorption component needed at 2:6{2:8m discrepancy discussed. spectral signatures are dominated by water vapour stellar photosphere, but several photospheric OH, CO, SiO features also present. eective temperature surface gravity derived Dor, based modeling it 3000 100 K logg =0 1 (cgs), respectively. found to be sensitive. given here slightly higher than those reported literature. discuss possible reasons this.
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