Nuvens escuras austrais. I - contagem de estrelas e extinções visuais

Gilberto Carlos Sanzovo, Maria Alcina Braz

Abstract


Star counts of 3 southern dark clouds were performed using the techniques developed by Dickman (1976) in order to determine the visual extinction, AV, Using the ESO (B), SRC-J and ESO (R) plates, counts were made in the cloud and comparison fields, the latter being presumably free of obscurity. Various globules were identified in the clouds and parameters as dimension and visual extinction were estimated.

 


Keywords


Dark clouds; Visual extinctions; Star counts.



DOI: http://dx.doi.org/10.5433/1679-0359.1986v7n2p54

Semina: Ciênc. Agrár.
Londrina - PR
E-ISSN 1679-0359
DOI: 10.5433 / 1679-0359
E-mail:  semina.agrarias@uel.br
Este obra está licenciado com uma Licença  Creative Commons Atribuição-NãoComercial 4.0 Internacional