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A Herschel Survey of the [N II] 205 μm Line in Local Luminous Infrared Galaxies: The [N II] 205 μm Emission as a Star Formation Rate Indicator

Zhao, Yinghe and Lu, Nanyao and Xu, C. Kevin and Gao, Yu and Lord, S. and Howell, J. and Isaak, K. G. and Charmandaris, V. and Díaz-Santos, T. and Appleton, P. and Evans, A. and Iwasawa, K. and Leech, J. and Mazzarella, J. and Petric, A. O. and Sanders, D. B. and Schulz, B. and Surace, J. and van der Werf, P. P. (2013) A Herschel Survey of the [N II] 205 μm Line in Local Luminous Infrared Galaxies: The [N II] 205 μm Emission as a Star Formation Rate Indicator. Astrophysical Journal Letters, 765 (1). Art. No. L13. ISSN 2041-8205. doi:10.1088/2041-8205/765/1/L13.

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We present, for the first time, a statistical study of [N II] 205 μm line emission for a large sample of local luminous infrared galaxies using Herschel Spectral and Photometric Imaging Receiver Fourier Transform Spectrometer (SPIRE FTS) data. For our sample of galaxies, we investigate the correlation between the [N II] luminosity (L_([N II])) and the total infrared luminosity (L_(IR)), as well as the dependence of L_([N II])/L_(IR) ratio on L_(IR), far-infrared colors (IRAS f_(60)/f_(100)), and the [O III] 88 μm to [N II] luminosity ratio. We find that L_([N II]) correlates almost linearly with L_(IR) for non-active galactic nucleus galaxies (all having L_(IR) < 10^(12) L_☉) in our sample, which implies that L_([N II]) can serve as a star formation rate tracer which is particularly useful for high-redshift galaxies that will be observed with forthcoming submillimeter spectroscopic facilities such as the Atacama Large Millimeter/submillimeter Array. Our analysis shows that the deviation from the mean L_([N II])-L_(IR) relation correlates with tracers of the ionization parameter, which suggests that the scatter in this relation is mainly due to the variations in the hardness, and/or ionization parameter, of the ambient galactic UV field among the sources in our sample.

Item Type:Article
Related URLs:
URLURL TypeDescription
Zhao, Yinghe0000-0002-9128-818X
Lu, Nanyao0000-0002-8948-1044
Xu, C. Kevin0000-0002-1588-6700
Gao, Yu0000-0003-0007-2197
Charmandaris, V.0000-0002-2688-1956
Díaz-Santos, T.0000-0003-0699-6083
Appleton, P.0000-0002-7607-8766
Evans, A.0000-0003-2638-1334
Iwasawa, K.0000-0002-4923-3281
Mazzarella, J.0000-0002-8204-8619
Petric, A. O.0000-0003-4030-3455
Sanders, D. B.0000-0002-1233-9998
Surace, J.0000-0001-7291-0087
van der Werf, P. P.0000-0001-5434-5942
Additional Information:© 2013 American Astronomical Society. Received 2012 December 11; accepted 2013 January 30; published 2013 February 14. Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA. We thank the anonymous referee for comments which improved this manuscript. This work is based in part on observations made with Herschel, an European Space Agency Cornerstone Mission with significant participation by NASA. Support for this work was provided in part by NASA through an award issued by JPL/Caltech. Research for this project is partially supported by the Natural Science Foundation of China (grant 10833006) and Jiangsu Province (SBK201120678). Y.Z. thanks IPAC for the hospitality and the financial support during his visit. This research has made use of the NASA/IPAC Extragalactic Database (NED), which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration.
Group:Infrared Processing and Analysis Center (IPAC)
Funding AgencyGrant Number
National Natural Science Foundation of China10833006
National Natural Science Foundation of China Jiangsu ProvinceSBK201120678
Subject Keywords:galaxies: evolution; galaxies: ISM; galaxies: starburst; infrared: ISM
Issue or Number:1
Record Number:CaltechAUTHORS:20130403-132809094
Persistent URL:
Official Citation:A Herschel Survey of the [N II] 205 μm Line in Local Luminous Infrared Galaxies: The [N II] 205 μm Emission as a Star Formation Rate Indicator Yinghe Zhao (赵应和) et al. 2013 ApJ 765 L13
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:37744
Deposited By: Ruth Sustaita
Deposited On:03 Apr 2013 20:52
Last Modified:09 Nov 2021 23:31

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