SDSS-V black hole mapper: the index diagram as a tool to disentangle the influence of the host galaxy in quasar spectra
We revisit the Quasar Main Sequence (QMS) by investigating the impact of the stellar component from the host galaxy (HG) on the emission line spectra of the active galactic nuclei (AGNs). We first detect spectra with broad emission lines using a line ratio method for a sample of $\simCastalia Negret...
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| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
November 2025
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| In: |
Monthly notices of the Royal Astronomical Society
Year: 2025, Jahrgang: 543, Heft: 4, Pages: 4272-4285 |
| ISSN: | 1365-2966 |
| DOI: | 10.1093/mnras/staf1711 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: https://doi.org/10.1093/mnras/staf1711
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| Verfasserangaben: | C.A. Negrete, R. Sandoval-Orozco, H. Ibarra-Medel, B.I. Tapia-Benavides, R.J. Assef, D. Dultzin, I. Lacerna, S. Morrison, S.F. Anderson, P. Rodríguez Hidalgo, C. Aydar, F.E. Bauer, E. Benitez, D. Bizyaev, W.N. Brandt, J.R. Brownstein, J. Buchner, I. Cruz-González, D. González-Buitrago, H. Hernández-Toledo, N. Jenaro-Ballesteros, A. Koekemoer, Y. Krongold, M.L. Martínez-Aldama, K. Pan, C. Ricci, M. Salvato, S.F. Sánchez, D. Serrano-Félix, D.P. Schneider, M. Sniegowska, B. Trakhtenbrot, Q. Wu, D. Wylezalek, Q. Yang and R.J. Zermeño |
MARC
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| 100 | 1 | |a Negrete, Castalia Alenka |e VerfasserIn |0 (DE-588)1385608218 |0 (DE-627)1947715984 |4 aut | |
| 245 | 1 | 0 | |a SDSS-V black hole mapper |b the index diagram as a tool to disentangle the influence of the host galaxy in quasar spectra |c C.A. Negrete, R. Sandoval-Orozco, H. Ibarra-Medel, B.I. Tapia-Benavides, R.J. Assef, D. Dultzin, I. Lacerna, S. Morrison, S.F. Anderson, P. Rodríguez Hidalgo, C. Aydar, F.E. Bauer, E. Benitez, D. Bizyaev, W.N. Brandt, J.R. Brownstein, J. Buchner, I. Cruz-González, D. González-Buitrago, H. Hernández-Toledo, N. Jenaro-Ballesteros, A. Koekemoer, Y. Krongold, M.L. Martínez-Aldama, K. Pan, C. Ricci, M. Salvato, S.F. Sánchez, D. Serrano-Félix, D.P. Schneider, M. Sniegowska, B. Trakhtenbrot, Q. Wu, D. Wylezalek, Q. Yang and R.J. Zermeño |
| 246 | 3 | 3 | |a SDSS-five black hole mapper |
| 264 | 1 | |c November 2025 | |
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| 500 | |a Veröffentlicht: 08. Oktober 2025 | ||
| 500 | |a Gesehen am 02.01.2026 | ||
| 520 | |a We revisit the Quasar Main Sequence (QMS) by investigating the impact of the stellar component from the host galaxy (HG) on the emission line spectra of the active galactic nuclei (AGNs). We first detect spectra with broad emission lines using a line ratio method for a sample of $\simCastalia Negrete high SNR ($>$20) black hole mapper objects (part of the fifth phase of the Sloan Digital Sky Survey). We then built the Index diagram, a novel diagnostic tool using the z-corrected spectra, model-free, designed to easily identify spectra with significant stellar HG contributions and to classify the AGN spectra into three categories based on AGN-HG dominance: HG-dominated (HGD), Intermediate (INT), and AGN-dominated (AGND) sources. A colour-z diagram was used to refine the AGN-HG classification. We subtract the stellar contributions from the HGD and INT spectra before modelling the AGN spectrum to extract the QMS parameters. Our QMS reveals that HGD galaxies predominantly occupy the Population B region with no R$_{\rm {Fe\,{\small II}}}$, with outliers exhibiting R$_{\rm {Fe\,{\small II}}}$ $>$ 1, likely due to HG subtraction residuals and a faint contribution of h$\beta _{\rm BC}$. INT and AGND spectra show similar distributions in the Population A region, while in Population B, a tail of AGND sources becomes apparent. Cross-matching with radio, infrared, and X-ray catalogues, we find that the strongest radio emitters are associated with HGD and INT groups. Strong X-ray emitters are found in INT and AGND sources, also occupying the AGN region in the Wide-field Infrared Survey Explorer colour diagram. | ||
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| 700 | 1 | |a Dultzin, D |e VerfasserIn |4 aut | |
| 700 | 1 | |a Lacerna, I |e VerfasserIn |4 aut | |
| 700 | 1 | |a Morrison, S |e VerfasserIn |4 aut | |
| 700 | 1 | |a Anderson, S F |e VerfasserIn |4 aut | |
| 700 | 1 | |a Rodríguez Hidalgo, P |e VerfasserIn |4 aut | |
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| 700 | 1 | |a Bizyaev, D |e VerfasserIn |4 aut | |
| 700 | 1 | |a Brandt, W N |e VerfasserIn |4 aut | |
| 700 | 1 | |a Brownstein, J R |e VerfasserIn |4 aut | |
| 700 | 1 | |a Buchner, J |e VerfasserIn |4 aut | |
| 700 | 1 | |a Cruz-González, I |e VerfasserIn |4 aut | |
| 700 | 1 | |a González-Buitrago, D |e VerfasserIn |4 aut | |
| 700 | 1 | |a Hernández-Toledo, H |e VerfasserIn |4 aut | |
| 700 | 1 | |a Jenaro-Ballesteros, N |e VerfasserIn |4 aut | |
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| 700 | 1 | |a Krongold, Y |e VerfasserIn |4 aut | |
| 700 | 1 | |a Martínez-Aldama, M L |e VerfasserIn |4 aut | |
| 700 | 1 | |a Pan, K |e VerfasserIn |4 aut | |
| 700 | 1 | |a Ricci, C |e VerfasserIn |4 aut | |
| 700 | 1 | |a Salvato, M |e VerfasserIn |4 aut | |
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