The Physical Nature of the Blue Objects in the Field Of BD+15°2469 (Virgo Cluster)

Autor:	L. Abati Erculiani, H. Lorenz
Rok vydání:	1984
Předmět:	Physics Field (physics) Limiting magnitude Dispersion (optics) medicine Astronomy Quasar Prism Astrophysics Schmidt camera medicine.disease_cause Virgo Cluster Ultraviolet
Zdroj:	International Astronomical Union Colloquium. 78:475-480
ISSN:	0252-9211
DOI:	10.1017/s0252921100107092
Popis:	This is the second Asiago blue objects field studied to determine the physical nature of ultraviolet excess objects (UVX) at high galactic latitudes using low dispersion objective prism plates. As the first of this series ( Abati 1982 )this work has a double aim: 1.to determine the proportions in the component populations of UVX objects selected by the two-colour method on Schmidt telescope plates;2.to determine the surface density of quasars down to a limiting magnitude m = 18 mag.
Databáze:	OpenAIRE
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