We present results from a study of starspot areas and temperatures primarily on active, ( f S ) ( T S ), single-lined spectroscopic binaries, determined using molecular absorption bands. Expanding upon our previous studies, we have analyzed multiorder echelle spectra of eight systems to simultaneously measure several di †erent molecular bands and chromospheric emission lines. We determined starspot parameters by Ðtting the molecular bands of interest, using spectra of inactive G and K stars as proxies for the nonspotted photosphere of the active stars, and using spectra of M stars as proxies for the spots. At least two bands with di †erent sensitivities are required. We found that Ðtting bands other than the TiO T eff 7055 and 8860 features does not greatly extend the temperature range or sensitivity of our technique.A The 8860 band is particularly important because of its sharply di †erent temperature sensitivity. We A did not Ðnd any substantial departures from or that we have measured previously based on singlef S T S order spectra. We reÐned our derived spot parameters using contemporaneous photometry where available. We found that using M giants as spot proxies for subgiant active stars often underestimates f S needed to Ðt the photometry ; this is presumably due to the increase in strength of the TiO bands with decreasing gravity. We also investigated correlations between and chromospheric emission, and we f S developed a simple method to measure nonspot temperature solely from our echelle spectra.
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