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Using cm observations to constrain the abundance of very small dust grains in Galactic cold cores

Tibbs, C. T. and Paladini, R. and Cleary, K. and Muchovej, S. J. C. and Scaife, A. M. M. and Stevenson, M. A. and Laureijs, R. J. and Ysard, N. and Grainge, K. J. B. and Perrott, Y. C. and Rumsey, C. and Villadsen, J. (2016) Using cm observations to constrain the abundance of very small dust grains in Galactic cold cores. Monthly Notices of the Royal Astronomical Society, 456 (3). pp. 2290-2300. ISSN 0035-8711. https://resolver.caltech.edu/CaltechAUTHORS:20160407-140909592

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Abstract

In this analysis, we illustrate how the relatively new emission mechanism, known as spinning dust, can be used to characterize dust grains in the interstellar medium. We demonstrate this by using spinning dust emission observations to constrain the abundance of very small dust grains (a ≲ 10 nm) in a sample of Galactic cold cores. Using the physical properties of the cores in our sample as inputs to a spinning dust model, we predict the expected level of emission at a wavelength of 1 cm for four different very small dust grain abundances, which we constrain by comparing to 1 cm CARMA observations. For all of our cores, we find a depletion of very small grains, which we suggest is due to the process of grain growth. This work represents the first time that spinning dust emission has been used to constrain the physical properties of interstellar dust grains.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1093/mnras/stv2759DOIArticle
http://mnras.oxfordjournals.org/content/456/3/2290PublisherArticle
http://arxiv.org/abs/1511.06626arXivDiscussion Paper
ORCID:
AuthorORCID
Paladini, R.0000-0002-5158-243X
Villadsen, J.0000-0003-3924-243X
Additional Information:© 2015 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. Accepted 2015 November 20. Received 2015 November 19; in original form 2015 August 13. First published online December 31, 2015. We thank the anonymous referee for providing detailed comments that have improved the content of this paper. This work has been partially performed within the framework of a NASA/ADP ROSES-2009 grant, no. 09-ADP09-0059.
Group:Infrared Processing and Analysis Center (IPAC)
Funders:
Funding AgencyGrant Number
NASA09-ADP09-0059
Subject Keywords:ISM: abundances – dust, extinction – ISM: evolution – ISM: general – infrared: ISM – radio continuum: ISM.
Issue or Number:3
Record Number:CaltechAUTHORS:20160407-140909592
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20160407-140909592
Official Citation:C. T. Tibbs, R. Paladini, K. Cleary, S. J. C. Muchovej, A. M. M. Scaife, M. A. Stevenson, R. J. Laureijs, N. Ysard, K. J. B. Grainge, Y. C. Perrott, C. Rumsey, and J. Villadsen Using cm observations to constrain the abundance of very small dust grains in Galactic cold cores MNRAS (March 01, 2016) Vol. 456 2290-2300 doi:10.1093/mnras/stv2759 First published online December 31, 2015
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:66000
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:08 Apr 2016 14:48
Last Modified:09 Mar 2020 13:19

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