2011A&A...531L...8B


Query : 2011A&A...531L...8B

2011A&A...531L...8B - Astronomy and Astrophysics, volume 531, L8-8 (2011/7-1)

Detection of interstellar hydrogen peroxide.

BERGMAN P., PARISE B., LISEAU R., LARSSON B., OLOFSSON H., MENTEN K.M. and GUESTEN R.

Abstract (from CDS):

The molecular species hydrogen peroxide, HOOH, is likely to be a key ingredient in the oxygen and water chemistry in the interstellar medium. Our aim with this investigation is to determine how abundant HOOH is in the cloud core ρ Oph A. By observing several transitions of HOOH in the (sub)millimeter regime we seek to identify the molecule and also to determine the excitation conditions through a multilevel excitation analysis. We have detected three spectral lines toward the SM1 position of ρ Oph A at velocity-corrected frequencies that coincide very closely with those measured from laboratory spectroscopy of HOOH. A fourth line was detected at the 4σ level. We also found through mapping observations that the HOOH emission extends (about 0.05pc) over the densest part of the ρ Oph A cloud core. We derive an abundance of HOOH relative to that of H2 in the SM1 core of about 1x10–10. To our knowledge, this is the first reported detection of HOOH in the interstellar medium.

Abstract Copyright:

Journal keyword(s): astrochemistry - ISM: abundances - ISM: individual objects: {rho} Oph A - ISM: molecules

Simbad objects: 6

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Number of rows : 6
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 NAME Orion-KL SFR 05 35 14.16 -05 22 21.5           ~ 2166 1
2 * rho Oph A * 16 25 35.1185711280 -23 26 49.831640736 4.3 5.22 5.05     B1V 395 0
3 NAME rho Oph A Cloud MoC 16 26 26.4 -24 22 33           ~ 280 1
4 NAME rho Oph A SM 1N cor 16 26 27.12 -24 23 34.8           ~ 45 0
5 NAME rho Oph A SM 1 cor 16 26 27.60 -24 23 55.0           ~ 59 0
6 IRAS 23118+6110 Y*O 23 14 01.63 +61 27 20.2           ~ 362 0

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2022.08.11-13:46:24

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