A More Efficient Search for H2O Megamaser Galaxies : The Power of the X-ray and Mid-infrared Photometry
| العنوان: | A More Efficient Search for H2O Megamaser Galaxies : The Power of the X-ray and Mid-infrared Photometry |
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| المؤلفون: | J. Y. Hsiang, Dominic W. Pesce, H. H. Chung, E. da Cunha, Anca Constantin, I. Zaw, Satoki Matsushita, J. C. Lin, B. Y. Chen, Y. Y. Chang, J. A. Braatz, W. T. Chien, C. Y. Kuo |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | Photometry (optics), Physics, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), Mid infrared, Megamaser, X-ray, FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics, Astrophysics - Astrophysics of Galaxies, Galaxy |
| الوصف: | We present a new investigation of the dependence of H2O maser detection rates and properties on the mid-IR AGN luminosity, L_AGN, and the obscuring column density, N_H, based on mid-IR and hard X-ray photometry. Based on spectral energy distribution fitting that allows for decomposition of the black hole accretion and star-formation components in the mid-infrared, we show that the megamaser (disk maser) detection rate increases sharply for galaxies with 12 micron AGN luminosity L^{AGN}_{12 micron} greater than 10^42 erg/s, from ~= 10^23 cm^{-2} and N_H >= 10^{24} cm^{-2}, respectively. Combining these column density cuts with a constraint for high L^{AGN}_{12 micron} (>=10^42 erg/s) predicts further increases in the megamaser (disk maser) detection rates to 19%(8%) and 27%(14%), revealing unprecedented potential boosts of the megamaser and disk maser detection rates by a factor of 7-15 relative to the current rates, depending on the chosen sample selection criteria. A noteworthy aspect of these new predictions is that the completeness rates are only compromised mildly, with the rates remaining at the level of ~95%(~50%) for sources with N_H >= 10^{23} cm^{-2} (N_H >= 10^24 cm^-2). Applying these selection methods to the current X-ray AGN surveys predicts the detection of >~15 new megamaser disks. 22 pages, 11 figures, 4 tables, Accepted by ApJ |
| اللغة: | English |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e59fa3281c72faca00d4fe47966c572d http://arxiv.org/abs/1911.10721 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....e59fa3281c72faca00d4fe47966c572d |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |