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Wavelength-resolved reverberation mapping of quasar CTS C30.10: Dissecting Mg II and Fe II emission regions

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dc.abstract.enContext. We present the results of the reverberation monitoring of the Mg II broad line and Fe II pseudocontinuum for the luminous quasar CTS C30.10 (z = 0.90052) with the Southern African Large Telescope in 2012-2021. Aims: We aimed at disentangling the Mg II and UV Fe II variability and the first measurement of UV Fe II time delay for a distant quasar. Methods: We used several methods for the time-delay measurements and determined the Fe II and Mg II time delays. We also performed a wavelength-resolved time delay study for a combination of Mg II and Fe II in the 2700-2900 Å rest-frame wavelength range. Results: We obtain a time delay for Mg II of 275.5<SUB>−19.5</SUB><SUP>+12.4</SUP> days in the rest frame, and we have two possible solutions of 270.0<SUB>−25.3</SUB><SUP>+13.8</SUP> days and 180.3<SUB>−30.0</SUB><SUP>+26.6</SUP> in the rest frame for Fe II. Combining this result with the old measurement of Fe II UV time delay for NGC 5548, we discuss for first time the radius-luminosity relation for UV Fe II with the slope consistent with 0.5 within the uncertainties. Conclusions: Because the Fe II time delay has a shorter time-delay component but the lines are narrower than Mg II, we propose that the line-delay measurement is biased toward the part of the broad line region (BLR) facing the observer. The bulk of the Fe II emission may arise from the more distant BLR region, however, the region that is shielded from the observer.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorPrince, Raj
dc.contributor.authorZajaček, Michal
dc.contributor.authorCzerny, Bożena
dc.contributor.authorTrzcionkowski, Piotr
dc.contributor.authorBronikowski, Mateusz
dc.contributor.authorFigaredo, Catalina Sobrino
dc.contributor.authorPanda, Swayamtrupta
dc.contributor.authorMartinez-Aldama, Mary Loli
dc.contributor.authorHryniewicz, Krzysztof
dc.contributor.authorJaiswal, Vikram Kumar
dc.contributor.authorŚniegowska, Marzena
dc.contributor.authorNaddaf, Mohammad-Hassan
dc.contributor.authorBilicki, Maciej
dc.contributor.authorHaas, Martin
dc.contributor.authorSarna, Marek Jacek
dc.contributor.authorKaras, Vladimir
dc.contributor.authorOlejak, Aleksandra
dc.contributor.authorPrzyłuski, Robert
dc.contributor.authorRałowski, Mateusz
dc.contributor.authorUdalski, Andrzej
dc.contributor.authorSefako, Ramotholo R.
dc.contributor.authorGenade, Anja
dc.contributor.authorWorters, Hannah L.
dc.date.accessioned2024-01-26T11:55:55Z
dc.date.available2024-01-26T11:55:55Z
dc.date.copyright2022-11-03
dc.date.issued2022
dc.description.accesstimeAT_PUBLICATION
dc.description.financePublikacja bezkosztowa
dc.description.versionFINAL_PUBLISHED
dc.description.volume667
dc.identifier.doi10.1051/0004-6361/202243194
dc.identifier.issn0004-6361
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/124809
dc.identifier.weblinkhttp://adsabs.harvard.edu/abs/2022A&A...667A..42P
dc.languageeng
dc.pbn.affiliationastronomy
dc.relation.ispartofAstronomy and Astrophysics
dc.relation.pagesA42
dc.rightsCC-BY
dc.sciencecloudnosend
dc.titleWavelength-resolved reverberation mapping of quasar CTS C30.10: Dissecting Mg II and Fe II emission regions
dc.typeJournalArticle
dspace.entity.typePublication