HERBIG-HARO OBJECTS ASSOCIATED WITH EXTREMELY YOUNG SOURCES IN L-1527 AND L-1448

DOI: 
Publication date: 
01/03/1994
Main author: 
EIROA, C
IAA authors: 
ESTALELLA, R
Authors: 
EIROA, C; MIRANDA, LF; ANGLADA, G; ESTALELLA, R; TORRELLES, JM
Journal: 
ASTRONOMY & ASTROPHYSICS
Publication type: 
Article
Volume: 
283
Pages: 
973-977
Number: 
Abstract: 
We present I, Halpha and [S II] CCD images of the dense cores L 1527 and L 1448. A diffuse reflection nebulosity is observed in L 1527. A red spectrum shows that superimposed on the reflection nebulosity there is HH emission of low excitation and very low radial velocity, upsilon(lsr) almost-equal-to 5.2 km s-1. The object is most probably excited by the very young Class 0 object IRAS 04368 + 2557. The data suggest that the IRAS source is surrounded by a dense, flattened circumstellar envelope seen edge-on and approximately oriented in a NS direction. The HH emission and reflection nebula are located along the polar direction of this envelope. A reflection nebulosity and HH emission is also observed in L 1448. We suggest that they are associated with the Class 0 object L 1448N (IRAS 03225 + 3034). Our findings increase to four the number of Class 0 objects associated with HH emission, which represents almost-equal-to 30% of the Class 0 sources known to date.
Database: 
WOK
Keywords: 
STARS, FORMATION; ISM, INDIVIDUAL OBJECTS, L-1527, L-1448; ISM, JETS AND OUTFLOWS; ISM, REFLECTION NEBULAE