Correlation patterns between 11 diffuse interstellar bands and ultraviolet extinction   总被引：1，自引：0，他引：1  

A. Megier  J. Kre&#;owski  T. Weselak 《Monthly notices of the Royal Astronomical Society》2005,358(2):563-571

We relate the equivalent widths of 11 diffuse interstellar bands, measured in the spectra of 49 stars, to different colour excesses in the ultraviolet. We find that most of the observed bands correlate positively with the extinction in the neighbourhood of the 2175-Å  bump. Correlation with colour excesses in other parts of the extinction curve is more variable from one diffuse interstellar band to another; we find that some diffuse bands (5797, 5850 and 6376 Å) correlate positively with the overall slope of the extinction curve, while others (5780 and 6284 Å) exhibit negative correlation. We discuss the implications of these results on the links between the diffuse interstellar band carriers and the properties of the interstellar grains.  相似文献   

On the CH B‐X (1, 0) band in translucent clouds     

T.  Weselak  G. Galazutdinov  Y. Beletsky  J. Kre&#x;owski 《Astronomische Nachrichten》2011,332(2):167-171

We present observations of CH B‐X (1, 0) band toward 13 translucent sightlines. The given precise positions (at 3627.403, 3633.289, 3636.222 Å) are derived by means of shifting our spectra to the rest velocity frame using B‐X (0, 0) features (at 3878, 3886 and 3890 Å). The proposed oscillator strengths (equal to 0.00035, 0.00104, 0.00069, respectively) are based on f ‐values of the CH B‐X (0, 0) system, i.e. 0.00110, 0.00320, 0.00210 (© 2011 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)  相似文献