2002A&A...386..204F


Query : 2002A&A...386..204F

2002A&A...386..204F - Astronomy and Astrophysics, volume 386, 204-210 (2002/4-4)

Discovery of X-ray emission from the protostellar jet L1551 IRS5 (HH 154).

FAVATA F., FRIDLUND C.V.M., MICELA G., SCIORTINO S. and KAAS A.A.

Abstract (from CDS):

We have for the first time detected X-ray emission associated with a protostellar jet, on the jet emanating from the L1551 IRS5 protostar. The IRS5 protostar is hidden behind a very large absorbing column density, making the direct observation of the jet's emission possible. The observed X-ray emission is likely associated with the shock ``working surface'', i.e. the interface between the jet and the circumstellar medium. The X-ray luminosity emanating from the jet is, at LX≃3x1029erg/s, a significant fraction of the luminosity normally associated with the coronal emission from young stars. The spectrum of the X-ray emission is compatible with thermal emission from a hot plasma, with a temperature of ≃4MK, higher than the temperature expected (on the basis of the jet's velocity) for the shock front produced by the jet hitting the circumstellar medium.

Abstract Copyright:

Journal keyword(s): ISM: clouds - ISM: individual objects: L1551: HH 454 - ISM: jets and outflows - stars: formation - stars: pre-main sequence - radio lines: ISM

CDS comments: [BFR2003] 31 is the source of X ray emission discovered.

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 - 2023
#notes
1 HH 454 HH 04 31 +18.1           ~ 11 0
2 XMMU J043123.4+180805 X 04 31 23.35 +18 08 04.2           ~ 4 0
3 XMMU J043126.9+180756 X 04 31 26.89 +18 07 55.7           ~ 4 0
4 LDN 1551 DNe 04 31 30.0 +18 12 30           ~ 798 1
5 RAFGL 5123 Y*O 04 31 34.07736 +18 08 04.9020           K3V/M3III 851 0

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2023.06.04-09:36:00

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