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MERLIN observations of GRS 1915+105 : a progress report

(1998)

Authors:

RP Fender, ST Garrington, DJ McKay, TWB Muxlow, GG Pooley, RE Spencer, AM Stirling, EB Waltman
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FCC 35 and Its H I Companion: Multiwavelength Observations and Interpretation

The Astronomical Journal American Astronomical Society 115:6 (1998) 2345-2355

Authors:

ME Putman, M Bureau, JR Mould, L Staveley-Smith, KC Freeman
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Infrared photometry and spectroscopy of the supersoft X-ray source RX J0019.8+2156 (= QR And)

(1998)

Authors:

H Quaintrell, RP Fender
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Optical Follow-Up of GRB 970508

The Astrophysical Journal American Astronomical Society 497:1 (1998) l13-l16

Authors:

TJ Galama, PJ Groot, J van Paradijs, C Kouveliotou, RG Strom, RAMJ Wijers, N Tanvir, J Bloom, M Centurion, J Telting, RGM Rutten, P Smith, C Mackey, S Smartt, C Benn, J Heise, J in't Zand
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The carbon abundance in main-sequence B-type stars towards the Galactic anti-centre

Astronomy and Astrophysics 332:2 (1998) 681-685

Authors:

RE Hibbins, PL Dufton, SJ Smartt, WRJ Rolleston

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.