Comparing submillimeter polarized emission with near-infrared polarization of background stars for the Vela C molecular cloud
We present a large-scale combination of near-infrared (near-IR) interstellar polarization data from background starlight with polarized emission data at submillimeter (sub-mm) wavelengths for the Vela C molecular cloud. The near-IR data consist of more than 6700 detections probing a range of visual...
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ftdatacite:10.48550/arxiv.1605.08522 2023-05-15T14:15:44+02:00 Comparing submillimeter polarized emission with near-infrared polarization of background stars for the Vela C molecular cloud Santos, Fabio P. Ade, Peter A. R. Angile, Francesco E. Ashton, Peter Benton, Steven J. Devlin, Mark J. Dober, Bradley Fissel, Laura M. Fukui, Yasuo Galitzki, Nicholas Gandilo, Natalie N. Klein, Jeffrey Korotkov, Andrei L. Li, Zhi-Yun Martin, Peter G. Matthews, Tristan G. Moncelsi, Lorenzo Nakamura, Fumitaka Netterfield, Calvin B. Novak, Giles Pascale, Enzo Poidevin, Frederick Savini, Giorgio Scott, Douglas Shariff, Jamil A. Soler, Juan Diego Thomas, Nicholas E. Tucker, Carole E. Tucker, Gregory S. Ward-Thompson, Derek 2016 https://dx.doi.org/10.48550/arxiv.1605.08522 https://arxiv.org/abs/1605.08522 unknown arXiv https://dx.doi.org/10.3847/1538-4357/aa62a7 arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ Astrophysics of Galaxies astro-ph.GA FOS Physical sciences article-journal Article ScholarlyArticle Text 2016 ftdatacite https://doi.org/10.48550/arxiv.1605.08522 https://doi.org/10.3847/1538-4357/aa62a7 2022-04-01T11:47:27Z We present a large-scale combination of near-infrared (near-IR) interstellar polarization data from background starlight with polarized emission data at submillimeter (sub-mm) wavelengths for the Vela C molecular cloud. The near-IR data consist of more than 6700 detections probing a range of visual extinctions between $2$ and $20\,$mag in and around the cloud. The sub-mm data was collected in Antartica by the Balloon-borne Large Aperture Submillimeter Telescope for Polarimetry (BLASTPol). This is the first direct combination of near-IR and sub-mm polarization data for a molecular cloud aimed at measuring the "polarization efficiency ratio" ($R_{\mathrm{eff}}$), a quantity that is expected to depend only on grain intrinsic physical properties. It is defined as $p_{500}/(p_{I}/τ_{V})$, where $p_{500}$ and $p_{I}$ are polarization fractions at $500\,μ$m and $I$-band, respectively, and $τ_{V}$ is the optical depth. To ensure that the same column density of material is producing both polarization from emission and from extinction, we conducted a careful selection of near-background stars using 2MASS, $Herschel$ and $Planck$ data. This selection excludes objects contaminated by the Galactic diffuse background material as well as objects located in the foreground. Accounting for statistical and systematic uncertainties, we estimate an average $R_{\mathrm{eff}}$ value of $2.4\pm0.8$, which can be used to test the predictions of dust grain models designed for molecular clouds when such predictions become available. $R_{\mathrm{eff}}$ appears to be relatively flat as a function of the cloud depth for the range of visual extinctions probed. : 23 pages, accepted by the Astrophysical Journal Text antartic* DataCite Metadata Store (German National Library of Science and Technology) Starlight ENVELOPE(64.483,64.483,-70.200,-70.200) |
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Open Polar |
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DataCite Metadata Store (German National Library of Science and Technology) |
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ftdatacite |
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topic |
Astrophysics of Galaxies astro-ph.GA FOS Physical sciences |
spellingShingle |
Astrophysics of Galaxies astro-ph.GA FOS Physical sciences Santos, Fabio P. Ade, Peter A. R. Angile, Francesco E. Ashton, Peter Benton, Steven J. Devlin, Mark J. Dober, Bradley Fissel, Laura M. Fukui, Yasuo Galitzki, Nicholas Gandilo, Natalie N. Klein, Jeffrey Korotkov, Andrei L. Li, Zhi-Yun Martin, Peter G. Matthews, Tristan G. Moncelsi, Lorenzo Nakamura, Fumitaka Netterfield, Calvin B. Novak, Giles Pascale, Enzo Poidevin, Frederick Savini, Giorgio Scott, Douglas Shariff, Jamil A. Soler, Juan Diego Thomas, Nicholas E. Tucker, Carole E. Tucker, Gregory S. Ward-Thompson, Derek Comparing submillimeter polarized emission with near-infrared polarization of background stars for the Vela C molecular cloud |
topic_facet |
Astrophysics of Galaxies astro-ph.GA FOS Physical sciences |
description |
We present a large-scale combination of near-infrared (near-IR) interstellar polarization data from background starlight with polarized emission data at submillimeter (sub-mm) wavelengths for the Vela C molecular cloud. The near-IR data consist of more than 6700 detections probing a range of visual extinctions between $2$ and $20\,$mag in and around the cloud. The sub-mm data was collected in Antartica by the Balloon-borne Large Aperture Submillimeter Telescope for Polarimetry (BLASTPol). This is the first direct combination of near-IR and sub-mm polarization data for a molecular cloud aimed at measuring the "polarization efficiency ratio" ($R_{\mathrm{eff}}$), a quantity that is expected to depend only on grain intrinsic physical properties. It is defined as $p_{500}/(p_{I}/τ_{V})$, where $p_{500}$ and $p_{I}$ are polarization fractions at $500\,μ$m and $I$-band, respectively, and $τ_{V}$ is the optical depth. To ensure that the same column density of material is producing both polarization from emission and from extinction, we conducted a careful selection of near-background stars using 2MASS, $Herschel$ and $Planck$ data. This selection excludes objects contaminated by the Galactic diffuse background material as well as objects located in the foreground. Accounting for statistical and systematic uncertainties, we estimate an average $R_{\mathrm{eff}}$ value of $2.4\pm0.8$, which can be used to test the predictions of dust grain models designed for molecular clouds when such predictions become available. $R_{\mathrm{eff}}$ appears to be relatively flat as a function of the cloud depth for the range of visual extinctions probed. : 23 pages, accepted by the Astrophysical Journal |
format |
Text |
author |
Santos, Fabio P. Ade, Peter A. R. Angile, Francesco E. Ashton, Peter Benton, Steven J. Devlin, Mark J. Dober, Bradley Fissel, Laura M. Fukui, Yasuo Galitzki, Nicholas Gandilo, Natalie N. Klein, Jeffrey Korotkov, Andrei L. Li, Zhi-Yun Martin, Peter G. Matthews, Tristan G. Moncelsi, Lorenzo Nakamura, Fumitaka Netterfield, Calvin B. Novak, Giles Pascale, Enzo Poidevin, Frederick Savini, Giorgio Scott, Douglas Shariff, Jamil A. Soler, Juan Diego Thomas, Nicholas E. Tucker, Carole E. Tucker, Gregory S. Ward-Thompson, Derek |
author_facet |
Santos, Fabio P. Ade, Peter A. R. Angile, Francesco E. Ashton, Peter Benton, Steven J. Devlin, Mark J. Dober, Bradley Fissel, Laura M. Fukui, Yasuo Galitzki, Nicholas Gandilo, Natalie N. Klein, Jeffrey Korotkov, Andrei L. Li, Zhi-Yun Martin, Peter G. Matthews, Tristan G. Moncelsi, Lorenzo Nakamura, Fumitaka Netterfield, Calvin B. Novak, Giles Pascale, Enzo Poidevin, Frederick Savini, Giorgio Scott, Douglas Shariff, Jamil A. Soler, Juan Diego Thomas, Nicholas E. Tucker, Carole E. Tucker, Gregory S. Ward-Thompson, Derek |
author_sort |
Santos, Fabio P. |
title |
Comparing submillimeter polarized emission with near-infrared polarization of background stars for the Vela C molecular cloud |
title_short |
Comparing submillimeter polarized emission with near-infrared polarization of background stars for the Vela C molecular cloud |
title_full |
Comparing submillimeter polarized emission with near-infrared polarization of background stars for the Vela C molecular cloud |
title_fullStr |
Comparing submillimeter polarized emission with near-infrared polarization of background stars for the Vela C molecular cloud |
title_full_unstemmed |
Comparing submillimeter polarized emission with near-infrared polarization of background stars for the Vela C molecular cloud |
title_sort |
comparing submillimeter polarized emission with near-infrared polarization of background stars for the vela c molecular cloud |
publisher |
arXiv |
publishDate |
2016 |
url |
https://dx.doi.org/10.48550/arxiv.1605.08522 https://arxiv.org/abs/1605.08522 |
long_lat |
ENVELOPE(64.483,64.483,-70.200,-70.200) |
geographic |
Starlight |
geographic_facet |
Starlight |
genre |
antartic* |
genre_facet |
antartic* |
op_relation |
https://dx.doi.org/10.3847/1538-4357/aa62a7 |
op_rights |
arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ |
op_doi |
https://doi.org/10.48550/arxiv.1605.08522 https://doi.org/10.3847/1538-4357/aa62a7 |
_version_ |
1766288030487805952 |