Scott W. Roby et al. 1999 ApJ 524 974 doi:10.1086/307815
Scott W. Roby1,4, David S. Leckrone2,4 and Saul J. Adelman3,4
Show affiliationsWe determine nitrogen abundances from co-added IUE high-dispersion SWP spectrograms of four HgMn stars and five normal or superficially normal main-sequence B and A stars. We find N deficiencies in the HgMn stars greater than previously reported (depletion factors of 135-400 relative to the Sun). N abundance discrepancies from UV and IR studies of normal stars are discussed in light of possible non-LTE effects. Our data set for our sample of HgMn stars (observed with a consistent strategy to maximize the benefits of co-additions) is an improvement over the single or few images previously used to derive N abundances for most of these stars.
stars: abundances; stars: early-type; stars: peculiar; ultraviolet: stars
Issue 2 (1999 October 20)
Received 1996 June 24, accepted for publication 1999 June 3
Scott W. Roby et al. 1999 ApJ 524 974
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