An H I cloud in the Pleiades - A cloud-cluster collision?

Abstract

view Abstract Citations (22) References (21) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS An H I cloud in the Pleiades : a cloud-cluster collision ? Gordon, K. J. ; Arny, T. T. Abstract The authors have mapped the neutral hydrogen 21-cm line from an area 5° on a side centered on the Pleiades using the NRAO 140-ft. telescope. A strong feature appears in the spectra at a velocity of VLSR = 7 km s-1, corresponding to the velocity of the optical interstellar lines. This cloud appears to be curved around the west side of the cluster. The feature is much weaker in the direction of the molecular cloud southwest of the cluster and is virtually absent from the central regions. The contours of the 7-km s-1 feature match the visible nebulosity reasonably well. The evidence for gas and dust between the observer and the stars suggests it may be necessary to revise the "standard" model of this reflection nebula in which it is assumed the nebulosity lies behind the illuminating stars. Publication: The Astronomical Journal Pub Date: May 1984 DOI: 10.1086/113565 Bibcode: 1984AJ.....89..672G Keywords: Astronomical Spectroscopy; Hydrogen Clouds; Interstellar Gas; Molecular Clouds; Pleiades Cluster; Reflection Nebulae; Star Clusters; B Stars; Radial Velocity; Spectral Line Width; Astrophysics full text sources ADS | data products SIMBAD (10)