Polarization of 6.0-GHz OH masers in W3(OH)

L. Harvey-Smith; R. Soria-Ruiz; A.M.S. Richards; R.J. Cohen

doi:10.1017/S1743921307012781

Polarization of 6.0-GHz OH masers in W3(OH)

L. Harvey-Smith, R. Soria-Ruiz, A.M.S. Richards, R.J. Cohen

Research output: Chapter in Book/Conference proceeding › Chapter

Abstract

We present preliminary results of a MERLIN polarization study of 6.0-GHz OH masers in the W3(OH) region of massive star-formation. We have detected a small but significant amount of linear polarization in the 6031-MHz masers, as well as a much larger fraction of circular polarization. We have found many Zeeman pairs, the analysis of which (along with the results at 6035-MHz) will be presented elsewhere. MERLIN is well-suited to detecting all the single-dish maser flux in these regions, owing to its range of short baselines (tens of kilometers) and resulting sensitivity to extended emission. We have found core-halo structure in the 6031-MHz OH maser emission in the region of the highly extended 4.7-GHz OH and 6.7-GHz methanol maser filament found by Harvey-Smith & Cohen (2005, 2006).

Original language	English
Title of host publication	Astrophysical Masers and their Environments
Editors	Jessica M Chapman, Willem A Baan
Publisher	Cambridge University Press
Pages	156-157
Number of pages	2
ISBN (Print)	9780521874649
DOIs	https://doi.org/10.1017/S1743921307012781
Publication status	Published - Mar 2007

Publication series

Name	Proceedings of the International Astronomical Union
Number	Symposium S242
Volume	3

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Harvey-Smith, L., Soria-Ruiz, R., Richards, A. M. S., & Cohen, R. J. (2007). Polarization of 6.0-GHz OH masers in W3(OH). In J. M. Chapman, & W. A. Baan (Eds.), Astrophysical Masers and their Environments (pp. 156-157). (Proceedings of the International Astronomical Union ; Vol. 3, No. Symposium S242). Cambridge University Press. https://doi.org/10.1017/S1743921307012781

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title = "Polarization of 6.0-GHz OH masers in W3(OH)",

abstract = "We present preliminary results of a MERLIN polarization study of 6.0-GHz OH masers in the W3(OH) region of massive star-formation. We have detected a small but significant amount of linear polarization in the 6031-MHz masers, as well as a much larger fraction of circular polarization. We have found many Zeeman pairs, the analysis of which (along with the results at 6035-MHz) will be presented elsewhere. MERLIN is well-suited to detecting all the single-dish maser flux in these regions, owing to its range of short baselines (tens of kilometers) and resulting sensitivity to extended emission. We have found core-halo structure in the 6031-MHz OH maser emission in the region of the highly extended 4.7-GHz OH and 6.7-GHz methanol maser filament found by Harvey-Smith & Cohen (2005, 2006).",

author = "L. Harvey-Smith and R. Soria-Ruiz and A.M.S. Richards and R.J. Cohen",

year = "2007",

month = mar,

doi = "10.1017/S1743921307012781",

language = "English",

isbn = "9780521874649",

series = "Proceedings of the International Astronomical Union ",

publisher = "Cambridge University Press",

number = "Symposium S242",

pages = "156--157",

editor = "Chapman, {Jessica M} and Baan, {Willem A}",

booktitle = "Astrophysical Masers and their Environments",

address = "United Kingdom",

}

Polarization of 6.0-GHz OH masers in W3(OH). / Harvey-Smith, L.; Soria-Ruiz, R.; Richards, A.M.S. et al.
Astrophysical Masers and their Environments. ed. / Jessica M Chapman; Willem A Baan. Cambridge University Press, 2007. p. 156-157 (Proceedings of the International Astronomical Union ; Vol. 3, No. Symposium S242).

Research output: Chapter in Book/Conference proceeding › Chapter

TY - CHAP

T1 - Polarization of 6.0-GHz OH masers in W3(OH)

AU - Harvey-Smith, L.

AU - Soria-Ruiz, R.

AU - Richards, A.M.S.

AU - Cohen, R.J.

PY - 2007/3

Y1 - 2007/3

N2 - We present preliminary results of a MERLIN polarization study of 6.0-GHz OH masers in the W3(OH) region of massive star-formation. We have detected a small but significant amount of linear polarization in the 6031-MHz masers, as well as a much larger fraction of circular polarization. We have found many Zeeman pairs, the analysis of which (along with the results at 6035-MHz) will be presented elsewhere. MERLIN is well-suited to detecting all the single-dish maser flux in these regions, owing to its range of short baselines (tens of kilometers) and resulting sensitivity to extended emission. We have found core-halo structure in the 6031-MHz OH maser emission in the region of the highly extended 4.7-GHz OH and 6.7-GHz methanol maser filament found by Harvey-Smith & Cohen (2005, 2006).

AB - We present preliminary results of a MERLIN polarization study of 6.0-GHz OH masers in the W3(OH) region of massive star-formation. We have detected a small but significant amount of linear polarization in the 6031-MHz masers, as well as a much larger fraction of circular polarization. We have found many Zeeman pairs, the analysis of which (along with the results at 6035-MHz) will be presented elsewhere. MERLIN is well-suited to detecting all the single-dish maser flux in these regions, owing to its range of short baselines (tens of kilometers) and resulting sensitivity to extended emission. We have found core-halo structure in the 6031-MHz OH maser emission in the region of the highly extended 4.7-GHz OH and 6.7-GHz methanol maser filament found by Harvey-Smith & Cohen (2005, 2006).

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U2 - 10.1017/S1743921307012781

DO - 10.1017/S1743921307012781

M3 - Chapter

SN - 9780521874649

T3 - Proceedings of the International Astronomical Union

SP - 156

EP - 157

BT - Astrophysical Masers and their Environments

A2 - Chapman, Jessica M

A2 - Baan, Willem A

PB - Cambridge University Press

ER -

Polarization of 6.0-GHz OH masers in W3(OH)

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