2015A&A...573L...2T


Query : 2015A&A...573L...2T

2015A&A...573L...2T - Astronomy and Astrophysics, volume 573, L2-2 (2015/1-1)

Fast molecular jet from L1157-mm.

TAFALLA M., BACHILLER R., LEFLOCH B., RODRIGUEZ-FERNANDEZ N., CODELLA C., LOPEZ-SEPULCRE A. and PODIO L.

Abstract (from CDS):

L1157-mm powers a molecular outflow that is well-known for its shock-induced chemical activity in several hot-spots. We have studied the molecular emission toward L1157-mm searching for a jet component responsible for these spots. We used the IRAM 30 m telescope to observe the vicinity of L1157-mm in several lines of SiO. The SiO(5-4) and SiO(6-5) spectra toward L1157-mm present blue and red detached components about 45km/s away from the ambient cloud. These extremely high-velocity (EHV) components are similar to those found in the L1448 and IRAS 04166+2706 outflows and probably arise from a molecular jet driven by L1157-mm. Observations of off-center positions indicate that the jet is unresolved in SiO(5-4) (<11"). The EHV jet seen in SiO probably excites L1157-B1 and the other chemically active spots of the L1157 outflow.

Abstract Copyright:

Journal keyword(s): stars: formation - ISM: abundances - ISM: jets and outflows - ISM: molecules

Simbad objects: 5

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Number of rows : 5
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 LDN 1448 DNe 03 22.5 +30 35           ~ 496 0
2 IRAS 04166+2706 Y*O 04 19 42.62736 +27 13 38.4312           ~ 123 0
3 HH 375 Y*O 20 39 06.2 +68 02 15           ~ 176 0
4 LDN 1157 DNe 20 39 06.4 +68 02 13           ~ 537 0
5 [DE95] LDN 1157 B1 out 20 39 11 +68 01.3           ~ 221 0

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2022.05.24-22:39:08

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