2002A&A...395L..25N

Query : 2002A&A...395L..25N

2002A&A...395L..25N - Astronomy and Astrophysics, volume 395L25-28 (2002/11-4)

Observations of high-J SiO emission along the HH 211 outflow.

NISINI B., CODELLA C., GIANNINI T. and RICHER J.S.

Abstract (from CDS):

Spectra of the pure rotational SiO J=11-10 and J=8-7 lines, at 477.5GHz and 347.3GHz respectively, have been obtained along the HH211 protostellar jet. Bright emission has been observed localized inside about 15" of projected distance from the central source, where a compact and collimated SiO jet was previously discovered by means of SiO J=1-0 interferometric observations (Chandler & Richer, 2001ApJ...555..139C). The detection of the high-J lines testifies for the extreme conditions of density and temperature of the SiO emission. Values of T>250K and n_H2∼2-5x10⁶cm^–3 are inferred from the observed line ratios, while a SiO abundance in the range ∼10^–7-10^–6 has been estimated through a comparison with the CO rotational lines at J>14 observed by the ISO Long Wavelength Spectrometer. Both the estimated physical conditions and abundance are in agreement with a picture in which the observed SiO emission directly arises at the front of a C-type shock with v_s<35km/s, where all the silicon released from the grains by sputtering and/or grain-grain collisions is converted into gas-phase SiO.

Abstract Copyright: ∼

Journal keyword(s): circumstellar matter - radio lines: stars - Herbig-Haro objects - ISM: individual objects: HH 211

Simbad objects: 1

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Number of rows : 1

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2026	#notes
1	HH 211	Y*O	03 43 56.52	+32 00 52.8						~	414	0

Query : 2002A&A...395L..25N

Basic data :

HH 211 -- Young Stellar Object
Other object types:	`smm (JCMTSE,JCMTSF,...)`, `YO ([DCE2008],[EES2009],...)`, `Y? (2014ApJ,[SDA2014])`, `mm (2009ApJ,[EYG2006],...)`, `IR (2009ApJS,[EDJ2009])`, `PoC ([KJD2006],[KJT2007])`, `HH (HH)`, `cor (2008ApJ)`, `MIR (SSTc2d)`
ICRS coord. (ep=J2000) :	`03 43 56.52 +32 00 52.8 (Infrared) [ 300 300 90 ] C 2009ApJS..181..321E`
FK4 coord. (ep=B1950 eq=1950) :	`03 40 48.42 +31 51 26.6 [ 300 300 90 ]`
Gal coord. (ep=J2000) :	`160.48317 -18.00114 [ 300 300 90 ]`
Angular size (arcmin):	`1.10 0.60 146 (smm) C` `2019MNRAS.485.2895E`

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`HH 211`	`SSTc2d J034356.5+320052`	`[HFR2007] 12`	`[KJT2007] SMM J034394+32008`
`JCMTSE J034356.7+320051`	`SSTc2d J034356.5+320053`	`[HRF2005] 12`	`[MLL2007] MMS 5`
`JCMTSF J034356.7+320051`	`[DCE2008] 105`	`[JJK2007] 44`	`[SDA2014] East4`
`NAME HH 211 FIR`	`[EDJ2009] 356`	`[KJD2006] SMM J034394+32008`	`[WBK2006] SMM J034395+32008`
`NAME HH 211 IR`	`[EES2009] Per-emb 1`	`[KJT2007] 25`	`[WBK2006] SMM 1`
`SCOPE G160.49-18.00`	`[EYG2006] Bolo 103`	`[KJT2007] SMM 13`

References (414 between 1850 and 2026) (Total 414)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).

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