3122 III/122 Interstellar 217-nm Band: Equivalent Widths 3 C Friedemann U K Roder Astron. Nachr. 308 41 1987 1987AN....308...41F Equivalent widths Interstellar medium Using the data obtained with the ultraviolet photometer in the Astronomical Netherlands Satellite, the equivalent widths of the interstellar 217 nm band as well as other parameters characterizing the behavior of the continuous interstellar extinction in the wavelength region of the band have been derived for 790 O, B stars with color excesses E(B-V) >= 0.4 mag.

ID HD or BD Identification HD is right justified to byte 6. BD zone appears in bytes 1-3. BD number is right justified to byte 9. --- E(B-V) E(B-V) Color excess mag alpha {alpha} parameter --- beta {beta} parameter --- gamma {gamma} parameter --- W Equivalent width in Angstroms 0.1nm S2200 Standard deviation (Wesselius et al. 1982) Standard deviation in 0.001mag in the 2200 A band according to Wesselius et al. (1982) 10-3mag N Number of separate observations (Ibid.) --- rem Remarks 3 = common star with an entry in the catalog compiled by Dorschner et al. (1984) 4 = at least two stars are present within one arcminute of the pointing position 5 = ultraviolet results indicate variability 50 = suspected variable 6 = equivalent width W deviates two to three times the standard deviation of the mean relation W ~ E(B-V) 70 = possibly a deviating extinction law 8 = lying in a cluster that probably affects the ultraviolet data 9 = equivalent width W deviates at least three times the standard deviation from the mean relation W ~ E(B-V) --- Julie Anne Watko SSDOO/ADC 1996Aug15 UNKNOWN UNKNOWN supersedes III/95 III_122.xml