High-resolution X-ray spectroscopy of M87 with the Einstein observatory - The detection of an O VIII emission line

Abstract

view Abstract Citations (96) References (25) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS High-resolution X-ray spectroscopy of M87 with the Einstein Observatory: the detection of an O VIII emission line. Canizares, C. R. ; Clark, G. W. ; Markert, T. H. ; Berg, C. ; Smedira, M. ; Bardas, D. ; Schnopper, H. ; Kalata, K. Abstract The paper deals with high-resolution X-ray spectroscopy performed to study the extended source surrounding the giant elliptical galaxy, M87, in the Virgo cluster. From observations carried out with a focal plane crystal spectrometer, L-alpha emission was detected from hydrogenic oxygen (O VIII). Upper limits could be set on lines from intermediate ionization states of iron. The presence of a quantity of cooler matter surrounding M87 was revealed, which has important implications for cluster models and favors a radiatively controlled accretion mechanism. Publication: The Astrophysical Journal Pub Date: November 1979 DOI: 10.1086/183104 Bibcode: 1979ApJ...234L..33C Keywords: Elliptical Galaxies; Emission Spectra; Galactic Clusters; Oxygen Spectra; X Ray Spectroscopy; Astronomical Observatories; Astrophysics; Focal Plane Devices; Intergalactic Media; Lyman Alpha Radiation; Astrophysics; Clusters of Galaxies:Intergalactic Matter; Galaxies:Oxygen Lines; Galaxies:X-Ray Spectra; Spectrometers:X Rays full text sources ADS | data products SIMBAD (3) NED (1)