Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apjs...50..451p&link_type=abstract
Astrophysical Journal Supplement Series, vol. 50, Dec. 1982, p. 451-515.
Astronomy and Astrophysics
Astrophysics
115
Astronomical Catalogs, Astronomical Maps, Astronomical Photometry, Cosmic Dust, Interstellar Extinction, Interstellar Matter, Nebulae, A Stars, Density Distribution, F Stars, Northern Hemisphere, Spatial Distribution, Stellar Spectrophotometry, Ubv Spectra
Scientific paper
Results are presented for an observational program in which uvby-beta photometric data for about 3450 bright A and F stars in the northern hemisphere were used for a high-resolution three-dimensional survey of the dust component of the interstellar medium in the solar neighborhood. The distances of the program stars range from about 75 pc to 300 pc. The results are summarized in a series of plots in which several dust concentrations are readily apparent. It is shown that: (1) the regions of dust concentration correspond to the inner portions of the Ophiuchus, Cepheus, and Taurus cloud complexes; (2) a bridge of absorbing material passing through Cassiopeia and Perseus connects the last two concentrations; (3) the Ophiuchus complex extends into Aquila; and (4) the dust concentrations are characterized by small-scale irregularities in both density and spatial extent.
Johnston L.
Perry Charles L.
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