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DENSE MOLECULAR GAS AND DUSTY TORUS IN NGC 4303

https://doi.org/10.22201/ia.01851101p.2025.61.01.05

Soní, A A; Cruz-González, I; Herrera-Endoqui, M; Benítez, E; Krongold, Y; Gómez-Ruiz, A I (April 2025, Revista Mexicana de Astronomía y Astrofísica)

Spectrum analysis at 3 mm of the central region (r≈800 pc) of NGC 4303 showed molecular gas lines of both dense gas tracers (HCN, HNC, HCO+, and C2H) and diffuse gases (13CO and C18O). Molecular gas parameters: H2 mass MH2=(1.75±0.32)×108M☉; radial velocity Vdense=178±60 km s-1, and VCO=151±29 km s-1; HCN luminosity LHCN=(7.38±1.40)×106 K km s-1 pc2; dense gas mass Mdense=(4.7±0.3)×107 M☉, indicating a significant contribution of dense to total molecular gas mass. To explore the AGN nature and central dusty torus of the galaxy, CIGALE was used to fit the integrated spectral energy distribution. Large torus properties are estimated: luminosity LTORUS=(7.1±2.8)×1043 erg s-1 and line of sight inclination of 67±16°, which is consistent with a Type 2 AGN; total infrared luminosity LIR=(3.51± 0.30)×1044 erg s-1; star formation rate SFR=6.0±0.3 M☉ yr-1. A marginal AGN contribution of ≈20% was found.
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Space Telescope and Optical Reverberation Mapping Project. IX. Velocity–Delay Maps for Broad Emission Lines in NGC 5548

https://doi.org/10.3847/1538-4357/abce60

Horne, Keith; Rosa, G. De; Peterson, B. M.; Barth, A. J.; Ely, J.; Fausnaugh, M. M.; Kriss, G. A.; Pei, L.; Bentz, M. C.; Cackett, E. M.; et al (February 2021, The Astrophysical Journal)
null (Ed.)
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Space Telescope and Optical Reverberation Mapping Project. XII. Broad-line Region Modeling of NGC 5548

https://doi.org/10.3847/1538-4357/abbad7

Williams, P. R.; Pancoast, A.; Treu, T.; Brewer, B. J.; Peterson, B. M.; Barth, A. J.; Malkan, M. A.; Rosa, G. De; Horne, Keith; Kriss, G. A.; et al (October 2020, The Astrophysical Journal)
null (Ed.)
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Space Telescope and Optical Reverberation Mapping Project. VIII. Time Variability of Emission and Absorption in NGC 5548 Based on Modeling the Ultraviolet Spectrum

https://doi.org/10.3847/1538-4357/ab3049

Kriss, G. A.; De Rosa, G.; Ely, J.; Peterson, B. M.; Kaastra, J.; Mehdipour, M.; Ferland, G. J.; Dehghanian, M.; Mathur, S.; Edelson, R.; et al (August 2019, The Astrophysical Journal)

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