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| Autores principales: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| Materias: | |
| Acceso en línea: | https://arxiv.org/abs/2407.04164 |
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| author | Dehghanian, Maryam Arav, Nahum Kriss, Gerard A. Mehdipour, Missagh Byun, Doyee Walker, Gwen Sharma, Mayank Barth, Aaron J. Bentz, Misty C. Boizelle, Benjamin D. Brotherton, Michael S. Cackett, Edward M. Bonta, Elena Dalla De Rosa, Gisella Ferland, Gary J. Fian, Carina Filippenko, Alexei V. Gelbord, Jonathan Goad, Michael R. Horne, Keith Homayouni, Yasaman Ilic, Dragana Joner, Michael D. Kara, Erin A. Kaspi, Shai Kochanek, Christopher S. Korista, Kirk T. Kosec, Peter Kovacevic, Andjelka B. Landt, Hermine Lewin, Collin Partington, Ethan R. Popovic, Luka C. Proga, Daniel Rogantini, Daniele Siebert, Matthew R. Storchi-Bergmann, Thaisa Vestergaard, Marianne Waters, Timothy Wang, Jian-Min Zaidouni, Fatima Zu, Ying |
| author_facet | Dehghanian, Maryam Arav, Nahum Kriss, Gerard A. Mehdipour, Missagh Byun, Doyee Walker, Gwen Sharma, Mayank Barth, Aaron J. Bentz, Misty C. Boizelle, Benjamin D. Brotherton, Michael S. Cackett, Edward M. Bonta, Elena Dalla De Rosa, Gisella Ferland, Gary J. Fian, Carina Filippenko, Alexei V. Gelbord, Jonathan Goad, Michael R. Horne, Keith Homayouni, Yasaman Ilic, Dragana Joner, Michael D. Kara, Erin A. Kaspi, Shai Kochanek, Christopher S. Korista, Kirk T. Kosec, Peter Kovacevic, Andjelka B. Landt, Hermine Lewin, Collin Partington, Ethan R. Popovic, Luka C. Proga, Daniel Rogantini, Daniele Siebert, Matthew R. Storchi-Bergmann, Thaisa Vestergaard, Marianne Waters, Timothy Wang, Jian-Min Zaidouni, Fatima Zu, Ying |
| contents | We observed the Seyfert 1 galaxy Mrk817 during an intensive multi-wavelength reverberation mapping campaign for 16 months. Here, we examine the behavior of narrow UV absorption lines seen in HST/COS spectra, both during the campaign and in other epochs extending over 14 years. We conclude that while the narrow absorption outflow system (at -3750 km/s with FWHM=177 km/s) responds to the variations of the UV continuum as modified by the X-ray obscurer, its total column density (logNH =19.5 cm-2) did not change across all epochs. The adjusted ionization parameter (scaled with respect to the variations in the Hydrogen ionizing continuum flux) is log UH =-1.0. The outflow is located at a distance smaller than 38 parsecs from the central source, which implies a hydrogen density of nH > 3000 cm-3. The absorption outflow system only covers the continuum emission source and not the broad emission line region, which suggests that its transverse size is small (< 1e16 cm), with potential cloud geometries ranging from spherical to elongated along the line of sight. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2407_04164 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | AGN STORM 2: VIII. Investigating the Narrow Absorption Lines in Mrk 817 Using HST-COS Observations Dehghanian, Maryam Arav, Nahum Kriss, Gerard A. Mehdipour, Missagh Byun, Doyee Walker, Gwen Sharma, Mayank Barth, Aaron J. Bentz, Misty C. Boizelle, Benjamin D. Brotherton, Michael S. Cackett, Edward M. Bonta, Elena Dalla De Rosa, Gisella Ferland, Gary J. Fian, Carina Filippenko, Alexei V. Gelbord, Jonathan Goad, Michael R. Horne, Keith Homayouni, Yasaman Ilic, Dragana Joner, Michael D. Kara, Erin A. Kaspi, Shai Kochanek, Christopher S. Korista, Kirk T. Kosec, Peter Kovacevic, Andjelka B. Landt, Hermine Lewin, Collin Partington, Ethan R. Popovic, Luka C. Proga, Daniel Rogantini, Daniele Siebert, Matthew R. Storchi-Bergmann, Thaisa Vestergaard, Marianne Waters, Timothy Wang, Jian-Min Zaidouni, Fatima Zu, Ying Astrophysics of Galaxies We observed the Seyfert 1 galaxy Mrk817 during an intensive multi-wavelength reverberation mapping campaign for 16 months. Here, we examine the behavior of narrow UV absorption lines seen in HST/COS spectra, both during the campaign and in other epochs extending over 14 years. We conclude that while the narrow absorption outflow system (at -3750 km/s with FWHM=177 km/s) responds to the variations of the UV continuum as modified by the X-ray obscurer, its total column density (logNH =19.5 cm-2) did not change across all epochs. The adjusted ionization parameter (scaled with respect to the variations in the Hydrogen ionizing continuum flux) is log UH =-1.0. The outflow is located at a distance smaller than 38 parsecs from the central source, which implies a hydrogen density of nH > 3000 cm-3. The absorption outflow system only covers the continuum emission source and not the broad emission line region, which suggests that its transverse size is small (< 1e16 cm), with potential cloud geometries ranging from spherical to elongated along the line of sight. |
| title | AGN STORM 2: VIII. Investigating the Narrow Absorption Lines in Mrk 817 Using HST-COS Observations |
| topic | Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2407.04164 |