2005A&A...436..983F


Query : 2005A&A...436..983F

2005A&A...436..983F - Astronomy and Astrophysics, volume 436, 983-997 (2005/6-4)

HST and spectroscopic observations of the L1551 IRS5 jets (HH154).

FRIDLUND C.V.M., LISEAU R., DJUPVIK A.A., HULDTGREN M., WHITE G.J., FAVATA F. and GIARDINO G.

Abstract (from CDS):

We have carried out a thorough optical study of the closest star formation jet. The inner arcminute surrounding the class 0/I binary protostar L1551 IRS5 and its associated jet (HH154) have been observed using the Hubble Space Telescope with the WFPC2 camera, the ESO New Technology Telescope with the EMMI spectrograph and the Nordic Optical Telescope with the ALFOSC spectrograph. This data set is compared to earlier ground based imaging with the aim to study the evolution of this particular jet, and its possible interaction with the molecular material in the bipolar molecular outflow associated with this source. The velocity field of the jet is mapped out. The highest velocities are found in the vicinity of the recently discovered X-ray source emanating from a shock in this jet. The energy radiated by the X-ray source is compatible with these velocities. The Hα and Hβ emission from the jet is used to determine the extinction, which is found to increase inwards in the jet towards the protostar. The extinction towards the X-ray source is consistent with the one determined from the X-ray spectrum.

Abstract Copyright:

Journal keyword(s): ISM: individual objects: L1551 - ISM: jets and outflows - ISM: Herbig Haro objects - stars: formation - stars: pre-main sequence

Simbad objects: 8

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Number of rows : 8
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 HH 28 HH 04 31 06.8 +18 03 28           ~ 92 0
2 HH 29 HH 04 31 26.9 +18 06 39           ~ 108 0
3 LDN 1551 DNe 04 31 30.0 +18 12 30           ~ 794 1
4 LDN 1551S DNe 04 31 33.9 +18 08 15           ~ 11 0
5 RAFGL 5123 Y*O 04 31 34.07736 +18 08 04.9020           K3V/M3III 844 0
6 V* V1213 Tau Or* 04 31 37.5055489536 +18 12 24.383952396           K7 548 0
7 V* HL Tau Or* 04 31 38.5107609312 +18 13 57.859747968   15.89 14.49 14.39   K5 1360 0
8 2MASS J04314444+1808315 Y*O 04 31 44.44680 +18 08 31.5384           ~ 163 0

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2023.02.04-10:45:10

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