NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-05-19 T21:58:00 PDT
Help | Comment | NED Home

For refcode 2012ApJ...755..171S:
Retrieve 114 NED objects in this reference.
Please click here for ADS abstract

NED Abstract

Copyright by American Astronomical Society. Reproduced by permission
2012ApJ...755..171S [C II] 158 micron Luminosities and Star Formation Rate in Dusty Starbursts and Active Galactic Nuclei Sargsyan, L.; Lebouteiller, V.; Weedman, D.; Spoon, H.; Bernard-Salas, J.; Engels, D.; Stacey, G.; Houck, J.; Barry, D.; Miles, J.; Samsonyan, A. Abstract. Results are presented for [C II] 158 micron line fluxes observed with the Herschel PACS instrument in 112 sources with both starburst and active galactic nucleus (AGN) classifications, of which 102 sources have confident detections. Results are compared with mid-infrared spectra from the Spitzer Infrared Spectrometer and with L_ir_ from IRAS fluxes; AGN/starburst classifications are determined from equivalent width of the 6.2 micron polycyclic aromatic hydrocarbon (PAH) feature. It is found that the [C II] line flux correlates closely with the flux of the 11.3 micron PAH feature independent of AGN/starburst classification, log [f([C II] 158 micron)/f(11.3 micron PAH)] = -0.22 +/- 0.25. It is concluded that the [C II] line flux measures the photodissociation region associated with starbursts in the same fashion as the PAH feature. A calibration of star formation rate (SFR) for the starburst component in any source having [C II] is derived comparing [C II] luminosity L([C II]) to L_ir_ with the result that log SFR = log L([C II)]) - 7.08 +/- 0.3, for SFR in M_sun_ yr^-1^ and L([C II]) in L_sun_. The decreasing ratio of L([C II]) to L_ir_ in more luminous sources (the "[C II] deficit") is shown to be a consequence of the dominant contribution to L_ir_ arising from a luminous AGN component because the sources with the largest L_ir_ and smallest L([C II])/L_ir_ are AGNs. Based on observations with the Herschel Space Observatory, which is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA. Key words: galaxies: active, galaxies: distances and redshifts, galaxies: starburst, infrared: galaxies
Retrieve 114 NED objects in this reference.
Please click here for ADS abstract

Back to NED Home