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Spectroscopic binary orbits from photoelectric radial velocities. Paper 3: delta Orionis
Bibcode: 1987Obs...107..205H

Howarth, I. D.; Zuiderwijk, E. J.; Stickland, D. J. +1 more

The purpose of the present contribution is to add a modern set of orbital elements to those derived from data of some antiquity in the pursuit of a value for the apsidal motion constant for the bright, hot supergiant δ Orionis.

1987 The Observatory
IUE 22
Spectroscopic binary orbits from ultraviolet radial velocities. Paper 2: Plaskett's Star
Bibcode: 1987Obs...107...68S

Stickland, D. J.

1987 The Observatory
IUE 19
Platinum and bismuth in HR 465
Bibcode: 1987Obs...107..188C

Cowley, Charles R.

Identifications in IUE spectra of HR 465 and a few other Ap stars in the magnetic sequence have been made using the method of wavelength coincidence statistics. These identifications have been supported by traditional techniques which rely on an examination of the strongest expected lines. The identification of Pt II made in a previous analysis of…

1987 The Observatory
IUE 18
Possible H2 emission in Comet Bradfield
Bibcode: 1987Obs...107...29K

Krishna Swamy, K. S.; Tarafdar, S. P.

The authors have identified tentatively an observed feature at 1600 Å in comet Bradfield with H2 fluorescence emission.

1987 The Observatory
IUE 3