Hidrógeno atómico en Scorpius y en Ophiuchus

We mention new observations of a feature of filamentary shape in the region 350° ≥ l ≥ 338°, at positive latitudes. Its radial velocity and its distance are -12 km/s and 170 pc respectively. We also re-discuss Sancisi's (1974) model of the spatial configuration and the kinematics of the gas, du...

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Detalles Bibliográficos
Autores principales: Olano, Carlos Alberto, Pöppel, Wolfgang G. L.
Formato: Articulo Comunicacion
Lenguaje:Español
Publicado: 1980
Materias:
Astronomía
Galaxias
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/146839
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-146839
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Español
topic Astronomía
Galaxias
spellingShingle Astronomía
Galaxias
Olano, Carlos Alberto
Pöppel, Wolfgang G. L.
Hidrógeno atómico en Scorpius y en Ophiuchus
topic_facet Astronomía
Galaxias
description We mention new observations of a feature of filamentary shape in the region 350° ≥ l ≥ 338°, at positive latitudes. Its radial velocity and its distance are -12 km/s and 170 pc respectively. We also re-discuss Sancisi's (1974) model of the spatial configuration and the kinematics of the gas, dust and stars in the region of the young association Sco OB2. We conclude that the HI-ridge of high intensity, positive velocity and low velocity dispersion described by Sancisi is part of the extensive HI-ridge associated with Gould's belt. We propose that the Sco OB2 association originated in Gould's belt main expanding gas shell about 2x10⁷ years ago (Blaauw 1964). Later on along its evolution, one or more supernova explosions produced part of a loop of positive velocities, as well as a negative velocity gas complex of which the cloud at v= -12 km/s is a part. All this gas would have been swept off from Gould's belt main expanding shell, which was strongly perturbed, showing presently a remarkable velocity shift as compared to the neighbourhood where there is no association. Besides, it presents a remarkable blank of gas centered at l=341°, b=18°, presumably also produced by stars of the association. As the paper will be published elsewhere, we give here only a synthesis.
format Articulo
Comunicacion
author Olano, Carlos Alberto
Pöppel, Wolfgang G. L.
author_facet Olano, Carlos Alberto
Pöppel, Wolfgang G. L.
author_sort Olano, Carlos Alberto
title Hidrógeno atómico en Scorpius y en Ophiuchus
title_short Hidrógeno atómico en Scorpius y en Ophiuchus
title_full Hidrógeno atómico en Scorpius y en Ophiuchus
title_fullStr Hidrógeno atómico en Scorpius y en Ophiuchus
title_full_unstemmed Hidrógeno atómico en Scorpius y en Ophiuchus
title_sort hidrógeno atómico en scorpius y en ophiuchus
publishDate 1980
url http://sedici.unlp.edu.ar/handle/10915/146839
work_keys_str_mv AT olanocarlosalberto hidrogenoatomicoenscorpiusyenophiuchus
AT poppelwolfganggl hidrogenoatomicoenscorpiusyenophiuchus
bdutipo_str Repositorios
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