Jingzhe Ma
SOFIA/HAWC+ Detection of a Gravitationally Lensed Starburst Galaxy at z = 1.03
Ma, Jingzhe; Brown, Arianna; Cooray, Asantha; Nayyeri, Hooshang; Messias, Hugo; Timmons, Nicholas; Staguhn, Johannes; Temi, Pasquale; Dowell, C. Darren; Wardlow, Julie; Fadda, Dario; Kovacs, Attila; Riechers, Dominik; Oteo, Ivan; Wilson, Derek; Perez-Fournon, Ismael
Authors
Arianna Brown
Asantha Cooray
Hooshang Nayyeri
Hugo Messias
Nicholas Timmons
Johannes Staguhn
Pasquale Temi
C. Darren Dowell
Julie Wardlow
Dario Fadda
Attila Kovacs
Dominik Riechers
Ivan Oteo
Derek Wilson
Ismael Perez-Fournon
Abstract
We present the detection at 89 μm (observed frame) of the Herschel-selected gravitationally lensed starburst galaxy HATLAS J1429-0028 (also known as G15v2.19) in 15 minutes with the High-resolution Airborne Wideband Camera-plus (HAWC+) onboard the Stratospheric Observatory for Infrared Astronomy (SOFIA). The spectacular lensing system consists of an edge-on foreground disk galaxy at z = 0.22 and a nearly complete Einstein ring of an intrinsic ultra-luminous infrared (IR) galaxy at z = 1.03. Is this high IR luminosity powered by pure star formation (SF) or also an active galactic nucleus (AGN)? Previous nebular line diagnostics indicate that it is star formation dominated. We perform a 27-band multiwavelength spectral energy distribution (SED) modeling including the new SOFIA/HAWC+ data to constrain the fractional AGN contribution to the total IR luminosity. The AGN fraction in the IR turns out to be negligible. In addition, J1429-0028 serves as a testbed for comparing SED results from different models/templates and SED codes (magphys, sed3fit, and cigale). We stress that star formation history is the dominant source of uncertainty in the derived stellar mass (as high as a factor of ~10) even in the case of extensive photometric coverage. Furthermore, the detection of a source at z ~ 1 with SOFIA/HAWC+ demonstrates the potential of utilizing this facility for distant galaxy studies including the decomposition of SF/AGN components, which cannot be accomplished with other current facilities.
Citation
Ma, J., Brown, A., Cooray, A., Nayyeri, H., Messias, H., Timmons, N., Staguhn, J., Temi, P., Dowell, C. D., Wardlow, J., Fadda, D., Kovacs, A., Riechers, D., Oteo, I., Wilson, D., & Perez-Fournon, I. (2018). SOFIA/HAWC+ Detection of a Gravitationally Lensed Starburst Galaxy at z = 1.03. Astrophysical Journal, 864(1), Article 60. https://doi.org/10.3847/1538-4357/aad4a0
Journal Article Type | Article |
---|---|
Acceptance Date | Jul 17, 2018 |
Online Publication Date | Aug 30, 2018 |
Publication Date | Aug 30, 2018 |
Deposit Date | Sep 21, 2018 |
Publicly Available Date | Sep 21, 2018 |
Journal | Astrophysical Journal |
Print ISSN | 0004-637X |
Publisher | American Astronomical Society |
Peer Reviewed | Peer Reviewed |
Volume | 864 |
Issue | 1 |
Article Number | 60 |
DOI | https://doi.org/10.3847/1538-4357/aad4a0 |
Public URL | https://durham-repository.worktribe.com/output/1319198 |
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Copyright Statement
© 2018. The American Astronomical Society. All rights reserved.
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