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- W1995223799 abstract "We report the first far–ultraviolet spectrum of the emission line spectroscopic binary KQ Pup (M2Iab+B0Ve), obtained with FUSE shortly after conjunction at orbital phase . The spectrum presents a sharp flux cutoff at 1040 Å; longwards, it is dominated by a large amount of resonant and low excitation transitions of neutral and singly ionized species, probably mostly of circumsystem origin, and by the Lyman absorption bands of H2, whose strength corresponds to an interstellar H2 column density of ~ cm-2, indicating a fraction of molecular hydrogen 2N(H2)/[ N(Hi)+2N(H2)] of ~0.4. An N(Hi)/EB-V ratio of is derived from the IUE spectra. The long–term UV monitoring of KQ Pup with IUE, HST and FUSE reveals a large decrease of the far–UV flux since orbital phase 0.82 and occupying more than 0.3 of the orbital period. This “shell” episode is attributed to line absorption and to Lyα Rayleigh scattering due to an extended dense cool envelope in the line of sight of the B star." @default.
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- W1995223799 date "2003-02-01" @default.
- W1995223799 modified "2023-10-17" @default.
- W1995223799 title "First far–UV observations of KQ Puppis with FUSE" @default.
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- W1995223799 doi "https://doi.org/10.1051/0004-6361:20021830" @default.
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