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Feii emission in NLS1s – originating from denser regions with higher abundances?

Published online by Cambridge University Press:  29 January 2021

Swayamtrupta Panda
Affiliation:
Center For Theoretical Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warsaw, Poland email: [email protected] Nicolaus Copernicus Astronomical Center, Polish Academy of Sciences, ul. Bartycka 18, 00-716 Warsaw, Poland
Paola Marziani
Affiliation:
INAF-Astronomical Observatory of Padova, Vicolo dell’Osservatorio, 5, 35122 Padova PD, Italy
Bożena Czerny
Affiliation:
Center For Theoretical Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warsaw, Poland email: [email protected]
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Abstract

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The interpretation of the main sequence of quasars has become a frontier subject in the last years. This considers the effect of a highly flattened, axially symmetric geometry for the broad line region (BLR) on the parameters related to the distribution of quasars along their main sequence. We utilize the photoionization code CLOUDY to model the BLR, assuming ‘un-constant’ virial factor with a strong dependence on the viewing angle. We show the preliminary results of the analysis to highlight the co-dependence of the Eigenvector 1 parameter, RFeii on the broad Hβ FWHM (i.e. the line dispersion) and the inclination angle (θ), assuming fixed values for the Eddington ratio (Lbo1/LEdd), black hole mass (MBH) and spectral energy distribution (SED) shape. We consider four cases with changing cloud density (nH) and composition. Understanding the emitting region is crucial as this knowledge can be extended to the use of quasars as distance indicators for Cosmology.‡

Type
Contributed Papers
Copyright
© The Author(s), 2021. Published by Cambridge University Press on behalf of International Astronomical Union

Footnotes

The project was partially supported by NCN grant no. 2017/26/A/ST9/00756 (MAESTRO9) and MNiSW grant DIR/WK/2018/12. PM acknowledges the INAF PRIN-SKA 2017 program 1.05.01.88.04.

References

Collin, S., Kawaguchi, T., Peterson, B. M., & Vestergaard, M. 2006, A&A, 456, 75Google Scholar
Du, P., Zhang, Z.-X., Wang, K., Huang, Y.-K., Zhang, Y., Lu, K.-X., Hu, C., Li, Y.-R., Bai, J.-M., Bian, W.-H., Yuan, Y.-F., Ho, L. C., Wang, J.-M., & SEAMBH Collaboration 2018, ApJ, 856, 610.3847/1538-4357/aaae6bCrossRefGoogle Scholar
Ferland, G. J., Chatzikos, M., Guzmán, F., Lykins, M. L., van Hoof, P. A. M., Williams, R. J. R., Abel, N. P., Badnell, N. R., Keenan, F. P., Porter, R. L., & Stancil, P. C. 2017, RMxAA, 53, 385Google Scholar
Grevesse, N., Asplund, M., Sauval, A. J., & Scott, P. 2010, ApSS, 328, 179Google Scholar
Korista, K., Baldwin, J., Ferland, G., & Verner, D. 1997, ApJS, 108, 40110.1086/312966CrossRefGoogle Scholar
Martínez-Aldama, M. L., Czerny, B., Panda, S., Kawka, D., Karas, V., Zajaček, M., & żyzcki, P. T. 2019, ApJ, 883, 210.3847/1538-4357/ab3728CrossRefGoogle Scholar
Marziani, P., Bon, E., Bon, N., del Olmo, A., Martnez-Aldama, M. L., D’Onofrio, M., Dultzin, D., Negrete, C. A., & Stirpe, G. 2019, Atoms, 7, 110.3390/atoms7010018CrossRefGoogle Scholar
Panda, S., Czerny, B., Adhikari, T. P., Hryniewicz, K., Wildy, C., Kuraszkiewicz, J., & Śniegowska, M. 2018, ApJ, 866, 11510.3847/1538-4357/aae209CrossRefGoogle Scholar
Panda, S., Marziani, P., & Czerny, B. 2019a, ApJ, 882, 210.3847/1538-4357/ab3292CrossRefGoogle Scholar
Panda, S., Marziani, P., & Czerny, B. 2019b, Contributions of the Astronomical Observatory Skalnaté Pleso, in pressGoogle Scholar
Panda, S., Marziani, P., & Czerny, B. 2019c, Proceedings of the International Astronomical Union (IAU), 356, 1Google Scholar
Peterson, B. M. 1993, PASP, 105, 24710.1086/133140CrossRefGoogle Scholar
Peterson, B. M. & Wandel, A. 1999, ApJL, 521, L9510.1086/312190CrossRefGoogle Scholar
Sulentic, J. W., Zwitter, T., Marziani, P. & Dultzin-Hacyan, D. 2000, ApJL, 536, L510.1086/312717CrossRefGoogle Scholar