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Titolo:
Echelle spectroscopy of H-2 in the HH111 jet
Autore:
Davis, CJ; Hodapp, KW; Desroches, L;
Indirizzi:
Joint Astron Ctr, Hilo, HI 96720 USA Joint Astron Ctr Hilo HI USA 96720Joint Astron Ctr, Hilo, HI 96720 USA Inst Astron, Hilo, HI 96720 USA Inst Astron Hilo HI USA 96720Inst Astron, Hilo, HI 96720 USA Univ Victoria, Dept Phys, Victoria, BC V8W 3P6, Canada Univ Victoria Victoria BC Canada V8W 3P6 ys, Victoria, BC V8W 3P6, Canada
Titolo Testata:
ASTRONOMY & ASTROPHYSICS
fascicolo: 1, volume: 377, anno: 2001,
pagine: 285 - 296
SICI:
1432-0746(200110)377:1<285:ESOHIT>2.0.ZU;2-P
Fonte:
ISI
Lingua:
ENG
Soggetto:
NEAR-INFRARED OBSERVATIONS; HERBIG-HARO FLOWS; MOLECULAR CLOUDS; PROPER MOTIONS; STELLAR JETS; SHOCKED H-2; HH-111 JET; BOW SHOCK; C-SHOCKS; OUTFLOWS;
Keywords:
interstellar medium : jets and outflows; stars : pre-main-sequence; observations; Herbig-Haro objects : HH111;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
35
Recensione:
Indirizzi per estratti:
Indirizzo: Davis, CJ Joint Astron Ctr, 660 N Aohoku Pl,Univ Pk, Hilo, HI 96720 USA Joint Astron Ctr 660 N Aohoku Pl,Univ Pk Hilo HI USA 96720 0 USA
Citazione:
C.J. Davis et al., "Echelle spectroscopy of H-2 in the HH111 jet", ASTRON ASTR, 377(1), 2001, pp. 285-296

Abstract

Near-Infrared echelle spectra of the Herbig-Haro knots F-P in the western lobe of the HH 111 out ow are presented. 10 adjacent, parallel slit positions were observed so that the kinematics could be mapped across the width ofthe ow. We find broad (FWZI similar to 100 km s(-1)), two-component H-2 profiles in the knots nearest the source; the profiles converge to a single, intermediate-velocity peak (V-LSR similar to 50 km s(-1)) at knot P.The kinematic signature of the HH 111 jet in H-2 is very similar to that seen at optical wavelengths (from both radial and tangential velocity measurements). In conjunction with published proper-motion (knot/shock pattern speed) measurements, we interpret the data in terms of a simple geometrical bow shockmodel. The model infers a high pre-shock velocity, of the order of 200-250km s(-1), with H-2 excitation in the extended bow wings in knots L, H and F, though exclusively near the bow head in knot P, with probably C-type shock excitation throughout.

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Documento generato il 03/04/20 alle ore 11:01:47