Measurement of B(D0→K-π+) Using Partial Reconstruction of B¯→D*+Xℓ-ν¯
Physical Review Letters American Physical Society (APS) 80:15 (1998) 3193-3197
Measurement ofB ( D 0 → K − π + ) Using Partial Reconstruction ofB ¯ → D * + X ℓ − ν ¯
Physical Review Letters American Physical Society (APS) 80:15 (1998) 3193-3197
Optical Follow-Up of GRB 970508
The Astrophysical Journal American Astronomical Society 497:1 (1998) l13-l16
The carbon abundance in main-sequence B-type stars towards the Galactic anti-centre
Astronomy and Astrophysics 332:2 (1998) 681-685
Abstract:
Differential carbon abundances (based on the C II doublet at 6580Å) are presented for eight early type stars, towards the Galactic anti-centre. All the stars have similar atmospheric parameters with effective temperatures in the range 25000 - 29000 K and surface gravities between logg = 3.9 - 4.3 dex. The derived photospheric abundances vary by up to 0.6 dex, and with the exception of one star, RLWT-41, the differential abundances are found to be closely correlated with those of nitrogen. This implies that both elements may have been formed by similar mechanisms and that the lack of correlation between the nitrogen and oxygen abundances previously found in this sample is not directly due to CNO-processed core material being mixed to the stellar surface.Radio observations of IRAS selected southern hemisphere classical Be stars
(1998)