Observations of double stars and new pairs. XIV

Details Observations of double stars and new pairs. XIV Observations of double stars and new pairs. XIV

Sep 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apjs...74..275h&link_type=abstract

Astrophysical Journal Supplement Series (ISSN 0067-0049), vol. 74, Sept. 1990, p. 275-290. Research supported by NSF and Observa

Astronomy and Astrophysics

Astrophysics

9

Astronomical Photography, Double Stars, Photographic Plates, Stellar Magnitude, Visible Spectrum

Scientific paper

Results of a continuing survey of visual double stars are presented, including 4880 measurements made from February 1987 to November 1989. The positions in WDS format and Durchmusterung numbers are given for 194 pairs first reported here. Micrometer measurements of 1142 doubles made with the Swarthmore 61 cm refractor are presented. Magnitudes are estimated for some of the objects. Plate measurements, plate orientations, position angles, number of nights, and measured exposures are given. Visual observations of 342 pairs obtained in May 1989 at Cerro Tololo, mostly with the 1.0 m reflector, are reported.

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