2003A&A...412L..15S


Query : 2003A&A...412L..15S

2003A&A...412L..15S - Astronomy and Astrophysics, volume 412, L15-18 (2003/12-3)

Interstellar SiN.

SCHILKE P., LEURINI S., MENTEN K.M. and ALCOLEA J.

Abstract (from CDS):

We report the detection of the silicon nitride (SiN) N=2-1, J=5/2-3/2 transition toward SgrB2(M), in absorption. Although it has been seen in a circumstellar envelope before, this is the first time this molecule has been detected in interstellar space. We estimate a column density of (1-2)x1013/cm2, which is a factor of 20-50 lower than that of silicon monoxide (SiO) toward this source. It is likely that this molecule, like SiO and FeO, is created by gas-phase chemistry after refractory elements, previously locked up in grain cores, have been released by sputtering in shocks.

Abstract Copyright:

Journal keyword(s): astrochemistry - line: identification - ISM: abundances - ISM: molecules - ISM: individual objects: SgrB2(M) - radio lines: ISM

Simbad objects: 2

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Number of rows : 2
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024
#notes
1 NAME Sgr B2 (North) Rad 17 47 20.2 -28 22 21           ~ 675 1
2 NAME Sgr B2 Main Rad 17 47 20.5 -28 23 06           ~ 408 1

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