SUBMILLIMETER LINE SPECTRUM OF THE SEYFERT GALAXY NGC 1068 FROM THE HERSCHEL-SPIRE FOURIER TRANSFORM SPECTROMETER

The first complete sub-millimeter spectrum of the Seyfert 2 galaxy NGC 1068 has been observed with the SPIRE Fourier transform spectrometer on board the Herschel Space Observatory. The sequence of CO lines, lines from H[sub 2]O, the fundamental rotational transition of hydrogen fluoride, two o-H[sub...

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Bibliographic Details
Published in:The Astrophysical journal 2012-10, Vol.758 (2), p.1-15
Main Authors: SPINOGLIO, Luigi, PEREIRA-SANTAELLA, Miguel, BENDO, George J, MADDEN, Suzanne C, WOLFIRE, Mark G, BOSELLI, Alessandro, COORAY, Asantha, PAGE, Mathew J, BUSQUET, Gemma, SCHIRM, Maximilien R. P, WILSON, Christine D, GLENN, Jason, KAMENETZKY, Julia, RANGWALA, Naseem, MALONEY, Philip R, PARKIN, Tara J
Format: Article
Language:English
Subjects:
Astronomy
ASTROPHYSICS
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
CARBON MONOXIDE
COSMIC RADIATION
Diffusion
Earth, ocean, space
Emission
EMISSION SPECTRA
EMISSION SPECTROSCOPY
Exact sciences and technology
EXCITATION
FOURIER TRANSFORM SPECTROMETERS
GALAXY NUCLEI
HYDROGEN
HYDROGEN FLUORIDES
HYDROXIDES
ION EMISSION
PHOTOIONIZATION
RADIANT HEAT TRANSFER
RADIOASTRONOMY
Sampling
Sciences of the Universe
SEYFERT GALAXIES
Spires
STARS
X RADIATION
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Summary:The first complete sub-millimeter spectrum of the Seyfert 2 galaxy NGC 1068 has been observed with the SPIRE Fourier transform spectrometer on board the Herschel Space Observatory. The sequence of CO lines, lines from H[sub 2]O, the fundamental rotational transition of hydrogen fluoride, two o-H[sub 2]O[sup +] lines, and one line each from CH[sup +] and OH[sup +] have been detected, together with the two [CI] lines and the [NII] 205 [mu]m line. The observations in both single pointing mode with sparse image sampling and in mapping mode with full image sampling allow us to disentangle two molecular emission components, one due to the compact circumnuclear disk (CND) and one from the extended region encompassing the star-forming ring (SF-ring). The emission of H[sub 2]O[sup +] and OH[sup +] are in agreement with PDR models with cosmic-ray ionization. The diffuse ionized atomic component observed through the [NII] 205 [mu]m line is consistent with previous photo-ionization models of the star-burst.
ISSN:0004-637X
1538-4357
DOI:10.1088/0004-637X/758/2/108