Re: QX Pup > If the starlight were not entirely visible, how come the spectral > classification of M6I or M9III was obtained ?? Are we observing the > scattered light from the Mira star? For example, A&A 355, 1103 (2000), clearly shows the M-type spectrum in the optical, indicating the presence of significant amount of scattered starlight contributing to the optical light. Regards, Taichi Kato