Abstract
view Abstract Citations (7) References (20) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Optical spiral structure at L = 30 to 70. I. New observations of distant early-type stars. Forbes, D. Abstract Photoelectric UBV photometry has been obtained for 86 early-type stars fainter than photographic magnitude 11, within the range of galactic longitude 30° - 70°, and classified as OB+ or OB in the Luminous Stars catalogues of the Hamburg and Warner and Swasey Observatories. MK spectrograms of 68 of these stars have also been obtained. Color excesses and distances are derived for those stars in the sample with spectral types B1.5 V or earlier and/or luminosity class Iab and brighter. Several of the stars observed are B and A supergiants with heliocentric distances in excess of 8 kpc. Publication: The Astronomical Journal Pub Date: April 1984 DOI: 10.1086/113537 Bibcode: 1984AJ.....89..475F Keywords: B Stars; Early Stars; O Stars; Spectral Energy Distribution; Stellar Spectrophotometry; Ubv Spectra; Astronomical Catalogs; Electrophotometers; Main Sequence Stars; Stellar Evolution; Stellar Luminosity; Supergiant Stars; Astronomy full text sources ADS | data products SIMBAD (85)
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