Detection of interstellar hydrogen peroxide

@article{Bergman2011DetectionOI,
  title={Detection of interstellar hydrogen peroxide},
  author={Per Bergman and B{\'e}reng{\`e}re Parise and Ren{\'e} Liseau and Bengt Larsson and H. Olofsson and Karl M. Menten and Rolf Gusten},
  journal={Astronomy and Astrophysics},
  year={2011},
  volume={531}
}
Context. The molecular species hydrogen peroxide, HOOH, is likely to be a key ingredient in the oxygen and water chemistry in the interstellar medium. Aims. Our aim with this investigation is to determine how abundant HOOH is in the cloud core ρ Oph A. Methods. 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. Results. We have detected three… 

Figures and Tables from this paper

Detection of the hydroperoxyl radical HO2 toward ρ Ophiuchi A - Additional constraints on the water chemical network

Context. Hydrogen peroxide (HOOH) was recently detected toward ρ Oph A. Subsequent astrochemical modeling that included reactions in the gas phase and on the surface of dust grains was able to

Search for HOOH in Orion

Context: The abundance of key molecules determines the level of cooling that is necessary for the formation of stars and planetary systems. In this context, one needs to understand the details of the

Characterizing the chemical pathways for water formation--a deep search for hydrogen peroxide.

A search for HOOH in a diverse sample of sources in different environments, including low-mass protostars and regions with very high column densities, such as Infrared Dark Clouds (IRDCs), which does not detect the molecule in any other source than Oph A, and derive 3sigma upper limits for the abundance of HooH relative to H2 lower than that in OPH A for most sources.

Deep search for hydrogen peroxide toward pre- and protostellar objects

Context. In the laboratory, hydrogen peroxide (HOOH) was proven to be an intermediate product in the solid-state reaction scheme that leads to the formation of water on icy dust grains. When HOOH

Spectral Signatures of Hydrogen Thioperoxide (HOSH) and Hydrogen Persulfide (HSSH): Possible Molecular Sulfur Sinks in the Dense ISM

For decades, sulfur has remained underdetected in molecular form within the dense interstellar medium (ISM), and somewhere a molecular sulfur sink exists where it may be hiding. With the discovery of

A SEARCH FOR O2 IN CO-DEPLETED MOLECULAR CLOUD CORES WITH HERSCHEL

The general lack of molecular oxygen in molecular clouds is an outstanding problem in astrochemistry. Extensive searches with the Submillimeter Astronomical Satellite, Odin, and Herschel have only

Production of O 2 through dismutation of H 2 O 2 during water ice desorption: a key to understanding comet O 2 abundances

Context. Detection of molecular oxygen and prediction of its abundance have long been a challenge for astronomers. The low abundances observed in few interstellar sources are well above the

A primordial origin for molecular oxygen in comets: a chemical kinetics study of the formation and survival of O2 ice from clouds to discs

Molecular oxygen has been confirmed as the fourth most abundant molecule in cometary material (O2/H2O ∼ 4 per cent) and is thought to have a primordial nature, i.e. coming from the interstellar cloud
...

References

SHOWING 1-10 OF 21 REFERENCES

Molecular oxygen in the ρ Ophiuchi cloud

Context: Molecular oxygen, O2, has been expected historically to be an abundant component of the chemical species in molecular clouds and, as such, an important coolant of the dense interstellar

Molecular abundances in OMC-1 - the chemical composition of interstellar molecular clouds and the influence of massive star formation

We present here an investigation of the chemical composition of the various regions in the core of the Orion molecular cloud (OMC-1) based on results from the Caltech Owens Valley Radio Observatory

Internal-Rotation in Hydrogen Peroxide: The Far-Infrared Spectrum and the Determination of the Hindering Potential

The torsional oscillation between the two OH groups of the hydrogen peroxide molecule is investigated through a study of the far‐infrared absorption spectrum of the molecule. A 1‐m‐focal‐length

Line Intensities in the Far-Infrared Spectrum of H2O2

Abstract Using high resolution Fourier transform spectra (resolution 0.002 cm −1 ) recorded at the Instituto Ricerca Onde Electromagnetiche Firenze and at the Justus Liebig University Giessen, it has

A measurement of the 362 GHz absorption line of Mars atmospheric H2O2

Population Diagram Analysis of Molecular Line Emission

We develop the use of the population diagram method to analyze molecular emission in order to derive physical properties of interstellar clouds. We focus particular attention on how the optical depth

Millimeter/Submillimeter-Wave Spectrum of the First Excited Torsional State in HOOH

Abstract The millimeter and submillimeter (mm/submm)-wave spectrum of hydrogen peroxide has been extended to include the first excited torsional state, n = 1. The 135 newly assigned rotational

Submillimeter Continuum Observations of rho Ophiuchi A: The Candidate Protostar VLA 1623 and Prestellar Clumps

We have mapped the submillimeter continuum emission from the rich star-forming core, ρ Oph A, at 350, 450, 800, and 1300 μm using the JCMT and IRAM 30 m telescopes. In addition to the diffuse