Search Publications
Astrometry of 19 globular clusters.
Johnston, H. M.; Picard, A.
We present accurate positions for the center of 19 globular clusters, 8 of which are known to contain X-ray sources and/or pulsars. The positions are based on a new centroiding algorithm applied to CCD images of the clusters. The fundamental astrometry is performed with plates from the ESO Schmidt telescope, using the Hipparcos Input Catalogue as …
The UV properties of normal galaxies. II. The ``non-IUE'' data.
Longo, G.; Capaccioli, M.; Rifatto, A.
In the last decade several satellite and balloon borne experiments have collected a large number of ultraviolet fluxes of normal galaxies measured through apertures of various sizes and shapes. We have homogenized this data set by deriving scale corrections with respect to IUE. In a forthcoming paper these data will be used to derive standard lumi…
The ultraviolet spectrum of η Carinae. II. 1980 IUE observations of the Homunculus.
Baratta, G. B.; Viotti, R.; Cassatella, A.
We analyze the ultraviolet observations of the circumstellar nebula of η Car (the Homunculus) obtained in December 1980 with IUE. A high resolution spectrum was obtained with the IUE large aperture from 6" to 17" NW of η Car, near the H condensation (the head). The measured flux appears two orders of magnitude larger than that expected from the in…
CCD astrometry and instrumental {DELTA}V photometry of wide visual double stars. IV. Differential measurements of northern pairs.
Sinachopoulos, D.; van Dessel, E.; Nakos, T.
We present relative positions and instrumental visual magnitude differences ({DELTA}V) of 101 northern wide double star components. The mean accuracy of the magnitude differences is 0.01 magnitudes, of the angular separation 0.04 arcseconds, and of position angle 0.13 degrees. Most of the programme pairs are targets of the HIPPARCOS mission and th…
Photographic observations of visual double stars.
Jasinta, D. M. D.; Raharto, M.; Soegiartini, E.
We present the results of photographic observations of 399 visual double stars of the Hipparcos Input Catalogue (HIC), observed in the years 1980 and 1990-1991 with the 60-cm double-refractor of the Bosscha Observatory at Lembang, Java.
VRI photometry of wide double stars with A- type primaries.
Cuypers, J.; Lampens, P.; Sinachopoulos, D. +2 more
We are presenting VRI photometry of 93 wide visual double stars having late B- or A- type primaries, taken from the Annex of Double and Multiple Stars of the HIPPARCOS Input Catalogue. Spectral types have been estimated for most of the primaries and for the majority of the secondaries. 40% of them probably have common origin components, for which …
Proper motion study of the globular cluster M 3
Tucholke, H. -J.; Scholz, R. -D.; Brosche, P.
We present proper motions for stars in the field of the galactic globular cluster NGC 5272 (M 3). This study forms part of the Bonn programme of globular cluster proper motions. 14 plates were taken with the Bonn double refractor, spanning epoch differences of up to 85 years. Relative proper motions for all well-measurable stars in the 1.5deg x 1.…
Low resolution IUE spectra of Wolf-Rayet stars.
Niedzielski, A.; Rochowicz, K.
We present uniformly reduced and measured equivalent widths, FWHM and observed line fluxes for 94 "single" WR stars (34 galactic WN, 22 galactic WC, 31 LMC WN and 7 LMC WC) based on the archive IUE spectra of WR stars gathered from different observational runs and from different epochs. The spectra are used for spectral classification in the ultra…
Physical studies of asteroids. XXVIII. Lightcurves and photoelectric photometry of asteroids 2, 14, 51, 105, 181, 238, 258, 369, 377, 416, 487, 626, 679, 1048 and 2183
Erikson, A.; Albrecht, R.; Schober, H. J. +5 more
Photoelectric photometry of 15 mainbelt asteroids was carried out at ESO, La Silla, Chile with the 0.50 m ESO, the 0.60 m Bochum, the 0.90 m Dutch and 1.0 m ESO telescopes, at CTIO, Chile with the 0.60 m Lowell and 1.0 m telescopes, and at OHP, France with 1.0 m telescope at Mt. Chiran. We have derived new rotation periods and present composite li…
High-dispersion microfiche atlas of OB stars for the first 10 years of IUE
Bohlin, R. C.; Henrichs, H. F.; Nichols, J. S.
An atlas on microfiche is described containing nearly 7000 high-dispersion spectra of OB stars obtained during the first 10 years with the IUE satellite. The data set is nearly complete for the selected time interval. The plotted wavelength range is from 1160 to 1890 A at the original IUE sampling intervals. The atlas is available by request.