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High-Velocity molecular bullets in bipolar outflows: L1448 and HH7-11

Published online by Cambridge University Press:  03 August 2017

R. Bachiller ,
J. Cernicharo ,
J. Martin-Pintado ,
M. Tafalla  and
B. Lazareff
R. Bachiller
Affiliation:
Centro Astronomico de Yebes (I.G.N.), Apartado 148, E-19080 Guadalajara, Spain
J. Cernicharo
Affiliation:
Centro Astronomico de Yebes (I.G.N.), Apartado 148, E-19080 Guadalajara, Spain
J. Martin-Pintado
Affiliation:
Centro Astronomico de Yebes (I.G.N.), Apartado 148, E-19080 Guadalajara, Spain
M. Tafalla
Affiliation:
Centro Astronomico de Yebes (I.G.N.), Apartado 148, E-19080 Guadalajara, Spain
B. Lazareff
Affiliation:
IRAM, 300, Rue de la Piscine, F-38406 St. Martin d'Heres CEDEX, France

Abstract

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On the main axis of two bipolar outflows (L1448 and HH7-11), we have discovered molecular clumps (“bullets”) moving at extremely high-velocities. The observations were made in CO lines (mainly J = 2 — 1) with the IRAM 30-m telescope at Pico Veleta, near Granada (Spain). We present in Figure 1 some profiles observed toward the axis of the two outflows. In addition to the ambient line and to the extremely high-velocity wings, we observe several very well defined peaks at high velocities. Our maps show that these features are well delimited in the space, indicating that they arise in small high-velocity clumps or “bullets”.

Type
Poster Sessions
Information
Symposium - International Astronomical Union , Volume 147: Fragmentation of Molecular Clouds and Star Formation , 1991 , pp. 389 - 390
Copyright
Copyright © Kluwer 1991