Detection of the 205 um [NII] Line from the Carina Nebula
We report the first detection of the 205 um 3P1 - 3P0 [NII] line from a ground-based observatory using a direct detection spectrometer. The line was detected from the Carina star formation region using the South Pole Imaging Fabry-Perot Interferometer (SPIFI) on the Antarctic Submillimeter Telescope...
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ftdatacite:10.48550/arxiv.astro-ph/0610636 2023-05-15T14:04:05+02:00 Detection of the 205 um [NII] Line from the Carina Nebula Oberst, T. E. Parshley, S. C. Stacey, G. J. Nikola, T. Loehr, A. Harnett, J. I. Tothill, N. F. H. Lane, A. P. Stark, A. A. Tucker, C. E. 2006 https://dx.doi.org/10.48550/arxiv.astro-ph/0610636 https://arxiv.org/abs/astro-ph/0610636 unknown arXiv https://dx.doi.org/10.1086/510289 Assumed arXiv.org perpetual, non-exclusive license to distribute this article for submissions made before January 2004 http://arxiv.org/licenses/assumed-1991-2003/ Astrophysics astro-ph FOS Physical sciences article-journal Article ScholarlyArticle Text 2006 ftdatacite https://doi.org/10.48550/arxiv.astro-ph/0610636 https://doi.org/10.1086/510289 2022-04-01T15:59:34Z We report the first detection of the 205 um 3P1 - 3P0 [NII] line from a ground-based observatory using a direct detection spectrometer. The line was detected from the Carina star formation region using the South Pole Imaging Fabry-Perot Interferometer (SPIFI) on the Antarctic Submillimeter Telescope and Remote Observatory (AST/RO) at South Pole. The [NII] 205 um line strength indicates a low-density (n ~ 32 cm^-3 ionized medium, similar to the low-density ionized halo reported previously in its [OIII] 52 and 88 um line emission. When compared with the ISO [CII] observations of this region, we find that ~27% of the [CII] line emission arises from this low-density ionized gas, but the large majority ~ 73% of the observed [CII] line emission arises from the neutral interstellar medium. This result supports and underpins prior conclusions that most of the observed [CII] 158 um line emission from Galactic and extragalactic sources arises from the warm, dense photodissociated surfaces of molecular clouds. The detection of the [NII] line demonstrates the utility of Antarctic sites for THz spectroscopy. : 8 pages, 2 figures. To appear in the Astrophysical Journal Letters Text Antarc* Antarctic South pole South pole DataCite Metadata Store (German National Library of Science and Technology) Antarctic The Antarctic South Pole |
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DataCite Metadata Store (German National Library of Science and Technology) |
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Astrophysics astro-ph FOS Physical sciences |
spellingShingle |
Astrophysics astro-ph FOS Physical sciences Oberst, T. E. Parshley, S. C. Stacey, G. J. Nikola, T. Loehr, A. Harnett, J. I. Tothill, N. F. H. Lane, A. P. Stark, A. A. Tucker, C. E. Detection of the 205 um [NII] Line from the Carina Nebula |
topic_facet |
Astrophysics astro-ph FOS Physical sciences |
description |
We report the first detection of the 205 um 3P1 - 3P0 [NII] line from a ground-based observatory using a direct detection spectrometer. The line was detected from the Carina star formation region using the South Pole Imaging Fabry-Perot Interferometer (SPIFI) on the Antarctic Submillimeter Telescope and Remote Observatory (AST/RO) at South Pole. The [NII] 205 um line strength indicates a low-density (n ~ 32 cm^-3 ionized medium, similar to the low-density ionized halo reported previously in its [OIII] 52 and 88 um line emission. When compared with the ISO [CII] observations of this region, we find that ~27% of the [CII] line emission arises from this low-density ionized gas, but the large majority ~ 73% of the observed [CII] line emission arises from the neutral interstellar medium. This result supports and underpins prior conclusions that most of the observed [CII] 158 um line emission from Galactic and extragalactic sources arises from the warm, dense photodissociated surfaces of molecular clouds. The detection of the [NII] line demonstrates the utility of Antarctic sites for THz spectroscopy. : 8 pages, 2 figures. To appear in the Astrophysical Journal Letters |
format |
Text |
author |
Oberst, T. E. Parshley, S. C. Stacey, G. J. Nikola, T. Loehr, A. Harnett, J. I. Tothill, N. F. H. Lane, A. P. Stark, A. A. Tucker, C. E. |
author_facet |
Oberst, T. E. Parshley, S. C. Stacey, G. J. Nikola, T. Loehr, A. Harnett, J. I. Tothill, N. F. H. Lane, A. P. Stark, A. A. Tucker, C. E. |
author_sort |
Oberst, T. E. |
title |
Detection of the 205 um [NII] Line from the Carina Nebula |
title_short |
Detection of the 205 um [NII] Line from the Carina Nebula |
title_full |
Detection of the 205 um [NII] Line from the Carina Nebula |
title_fullStr |
Detection of the 205 um [NII] Line from the Carina Nebula |
title_full_unstemmed |
Detection of the 205 um [NII] Line from the Carina Nebula |
title_sort |
detection of the 205 um [nii] line from the carina nebula |
publisher |
arXiv |
publishDate |
2006 |
url |
https://dx.doi.org/10.48550/arxiv.astro-ph/0610636 https://arxiv.org/abs/astro-ph/0610636 |
geographic |
Antarctic The Antarctic South Pole |
geographic_facet |
Antarctic The Antarctic South Pole |
genre |
Antarc* Antarctic South pole South pole |
genre_facet |
Antarc* Antarctic South pole South pole |
op_relation |
https://dx.doi.org/10.1086/510289 |
op_rights |
Assumed arXiv.org perpetual, non-exclusive license to distribute this article for submissions made before January 2004 http://arxiv.org/licenses/assumed-1991-2003/ |
op_doi |
https://doi.org/10.48550/arxiv.astro-ph/0610636 https://doi.org/10.1086/510289 |
_version_ |
1766275083503927296 |