An ISO survey of possible water and hydroxyl IRASER transitions towards the star-forming regions W49, W3(OH) and Sgr B2M

M. D. Gray; J. A. Yates

doi:10.1046/j.1365-8711.1999.03010.x

An ISO survey of possible water and hydroxyl IRASER transitions towards the star-forming regions W49, W3(OH) and Sgr B2M

M. D. Gray, J. A. Yates

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Abstract

We report ISO LWS observations towards the star-forming regions W49N, W3(OH) and Sgr B2M in LWS04 mode (high-resolution Fabry-Perot scans). Possible far-infrared laser emission was detected in a water line at 133.55 μm towards W49N. but the spectral resolution was inadequate to establish firmly the nature of the emission. An additional water line was marginally detected in absorption at the 3σ level, also towards W49N, at 169.74 μm. No OH lines were detected towards Sgr B2M or W3(OH) at either 134.83 or 135.95 μm, either in emission or in absorption.

Original language	English
Pages (from-to)	1153-1157
Number of pages	4
Journal	Monthly Notices of the Royal Astronomical Society
Volume	310
Issue number	4
DOIs	https://doi.org/10.1046/j.1365-8711.1999.03010.x
Publication status	Published - 21 Dec 1999

Keywords

Infrared: ISM: lines and bands
ISM: molecules
Radiative transfer
Stars: formation
Surveys

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10.1046/j.1365-8711.1999.03010.x

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title = "An ISO survey of possible water and hydroxyl IRASER transitions towards the star-forming regions W49, W3(OH) and Sgr B2M",

abstract = "We report ISO LWS observations towards the star-forming regions W49N, W3(OH) and Sgr B2M in LWS04 mode (high-resolution Fabry-Perot scans). Possible far-infrared laser emission was detected in a water line at 133.55 μm towards W49N. but the spectral resolution was inadequate to establish firmly the nature of the emission. An additional water line was marginally detected in absorption at the 3σ level, also towards W49N, at 169.74 μm. No OH lines were detected towards Sgr B2M or W3(OH) at either 134.83 or 135.95 μm, either in emission or in absorption.",

keywords = "Infrared: ISM: lines and bands, ISM: molecules, Radiative transfer, Stars: formation, Surveys",

author = "Gray, {M. D.} and Yates, {J. A.}",

year = "1999",

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doi = "10.1046/j.1365-8711.1999.03010.x",

language = "English",

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pages = "1153--1157",

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TY - JOUR

T1 - An ISO survey of possible water and hydroxyl IRASER transitions towards the star-forming regions W49, W3(OH) and Sgr B2M

AU - Gray, M. D.

AU - Yates, J. A.

PY - 1999/12/21

Y1 - 1999/12/21

N2 - We report ISO LWS observations towards the star-forming regions W49N, W3(OH) and Sgr B2M in LWS04 mode (high-resolution Fabry-Perot scans). Possible far-infrared laser emission was detected in a water line at 133.55 μm towards W49N. but the spectral resolution was inadequate to establish firmly the nature of the emission. An additional water line was marginally detected in absorption at the 3σ level, also towards W49N, at 169.74 μm. No OH lines were detected towards Sgr B2M or W3(OH) at either 134.83 or 135.95 μm, either in emission or in absorption.

AB - We report ISO LWS observations towards the star-forming regions W49N, W3(OH) and Sgr B2M in LWS04 mode (high-resolution Fabry-Perot scans). Possible far-infrared laser emission was detected in a water line at 133.55 μm towards W49N. but the spectral resolution was inadequate to establish firmly the nature of the emission. An additional water line was marginally detected in absorption at the 3σ level, also towards W49N, at 169.74 μm. No OH lines were detected towards Sgr B2M or W3(OH) at either 134.83 or 135.95 μm, either in emission or in absorption.

KW - Infrared: ISM: lines and bands

KW - ISM: molecules

KW - Radiative transfer

KW - Stars: formation

KW - Surveys

U2 - 10.1046/j.1365-8711.1999.03010.x

DO - 10.1046/j.1365-8711.1999.03010.x

M3 - Article

SN - 1365-2966

VL - 310

SP - 1153

EP - 1157

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 4

ER -

An ISO survey of possible water and hydroxyl IRASER transitions towards the star-forming regions W49, W3(OH) and Sgr B2M

Abstract

Keywords

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