XDR Chemistry in the Circumnuclear Disk of NGC 1068

A. Usero; S. Garcia-Burillo; A. Fuente; J. Martin-Pintado

XDR Chemistry in the Circumnuclear Disk of NGC 1068

A. Usero, S. Garcia-Burillo, A. Fuente, J. Martin-Pintado

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Abstract

We have studied the feedback in°uence that the central engine of the Seyfert 2 galaxy NGC 1068 may have on the chemistry of the 200 pc circumnuclear gas disk (CND). With this purpose, we have conducted a multispecies/ multi-transition survey of molecular gas in the CND of NGC 1068 using the IRAM 30m telescope. Abundances of several molecular species have been estimated, including HCN, CN, CS, HCO+, SiO and HOC+. We report on the detection of signi¯cant SiO emission in this galaxy, as well as on the ¯rst extragalactic detection of the active radical HOC+. We conclude that the chemistry of the molecular gas reservoir in the CND can be best explained in the framework of X-ray Dominated Region (XDR) models.

Original language	English
Title of host publication	In: The Neutral ISM in Starburst Galaxies - ASP Conf Series 320
Publisher	Astronomical Society of the Pacific
Pages	273-6
ISBN (Print)	1-58381-182-6, 978-1-58381-255-6
Publication status	Published - 2004

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title = "XDR Chemistry in the Circumnuclear Disk of NGC 1068",

abstract = "We have studied the feedback in°uence that the central engine of the Seyfert 2 galaxy NGC 1068 may have on the chemistry of the 200 pc circumnuclear gas disk (CND). With this purpose, we have conducted a multispecies/ multi-transition survey of molecular gas in the CND of NGC 1068 using the IRAM 30m telescope. Abundances of several molecular species have been estimated, including HCN, CN, CS, HCO+, SiO and HOC+. We report on the detection of signi¯cant SiO emission in this galaxy, as well as on the ¯rst extragalactic detection of the active radical HOC+. We conclude that the chemistry of the molecular gas reservoir in the CND can be best explained in the framework of X-ray Dominated Region (XDR) models.",

author = "A. Usero and S. Garcia-Burillo and A. Fuente and J. Martin-Pintado",

note = "Original paper can be found at: http://www.astrosociety.org/pubs/cs/309.html--Copyright Astronomical Society of the Pacific",

year = "2004",

language = "English",

isbn = "1-58381-182-6",

pages = "273--6",

booktitle = "In: The Neutral ISM in Starburst Galaxies - ASP Conf Series 320",

publisher = "Astronomical Society of the Pacific",

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TY - GEN

T1 - XDR Chemistry in the Circumnuclear Disk of NGC 1068

AU - Usero, A.

AU - Garcia-Burillo, S.

AU - Fuente, A.

AU - Martin-Pintado, J.

N1 - Original paper can be found at: http://www.astrosociety.org/pubs/cs/309.html--Copyright Astronomical Society of the Pacific

PY - 2004

Y1 - 2004

N2 - We have studied the feedback in°uence that the central engine of the Seyfert 2 galaxy NGC 1068 may have on the chemistry of the 200 pc circumnuclear gas disk (CND). With this purpose, we have conducted a multispecies/ multi-transition survey of molecular gas in the CND of NGC 1068 using the IRAM 30m telescope. Abundances of several molecular species have been estimated, including HCN, CN, CS, HCO+, SiO and HOC+. We report on the detection of signi¯cant SiO emission in this galaxy, as well as on the ¯rst extragalactic detection of the active radical HOC+. We conclude that the chemistry of the molecular gas reservoir in the CND can be best explained in the framework of X-ray Dominated Region (XDR) models.

AB - We have studied the feedback in°uence that the central engine of the Seyfert 2 galaxy NGC 1068 may have on the chemistry of the 200 pc circumnuclear gas disk (CND). With this purpose, we have conducted a multispecies/ multi-transition survey of molecular gas in the CND of NGC 1068 using the IRAM 30m telescope. Abundances of several molecular species have been estimated, including HCN, CN, CS, HCO+, SiO and HOC+. We report on the detection of signi¯cant SiO emission in this galaxy, as well as on the ¯rst extragalactic detection of the active radical HOC+. We conclude that the chemistry of the molecular gas reservoir in the CND can be best explained in the framework of X-ray Dominated Region (XDR) models.

M3 - Conference contribution

SN - 1-58381-182-6

SN - 978-1-58381-255-6

SP - 273

EP - 276

BT - In: The Neutral ISM in Starburst Galaxies - ASP Conf Series 320

PB - Astronomical Society of the Pacific

ER -

XDR Chemistry in the Circumnuclear Disk of NGC 1068

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