A new survey for high velocity HI detections in the Southern Hemisphere

A new high-sensitivity HI survey of the southern sky was made south of Declination -25°, at the Instituto Argentino de Radioastronomía (IAR), on a half-degree grid in galactic coordinates. A total of 50980 positions were observed. One of the goals of this survey was to search for high velocity cloud...

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Detalles Bibliográficos
Autores: Morras, Ricardo, Bajaja, Esteban, Arnal, Edmundo Marcelo, Pöppel, Wolfgang G. L.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2000
País:Argentina
Institución:Universidad Nacional de La Plata
Repositorio:SEDICI (UNLP)
Idioma:inglés
OAI Identifier:oai:sedici.unlp.edu.ar:10915/83362
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/83362
Access Level:acceso abierto
Palabra clave:Ciencias Astronómicas
Galaxy: halo
Galaxy: kinematics and dynamics
ISM: clouds
ISM: kinematics and dynamics
Surveys
Descripción
Sumario:A new high-sensitivity HI survey of the southern sky was made south of Declination -25°, at the Instituto Argentino de Radioastronomía (IAR), on a half-degree grid in galactic coordinates. A total of 50980 positions were observed. One of the goals of this survey was to search for high velocity clouds (HVCs). The HI profiles have been smoothed to a velocity resolution of 8 km s-1. The resulting rms noise falls in the range 0.015 to 0.020 K. We have detected 6848 high velocity (HV) components.