The Spectral Energy Distributions and Bolometric Luminosities of Local AGN: Study of the Complete 12 μm AGN Sample
We measure the bolometric luminosity of a complete and unbiased 12 μ m-selected sample of active galactic nuclei (AGN) in the local Universe. For each galaxy, we used a 10-band radio-to-X-ray spectral energy distribution (SED) to isolate the genuine AGN continuum in each band, including subarcsecond...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2024-01-01
|
| Series: | The Astrophysical Journal |
| Subjects: | |
| Online Access: | https://doi.org/10.3847/1538-4357/ad23e4 |
| _version_ | 1797253809085349888 |
|---|---|
| author | Luigi Spinoglio Juan Antonio Fernández-Ontiveros Matthew A. Malkan |
| author_facet | Luigi Spinoglio Juan Antonio Fernández-Ontiveros Matthew A. Malkan |
| author_sort | Luigi Spinoglio |
| collection | DOAJ |
| description | We measure the bolometric luminosity of a complete and unbiased 12 μ m-selected sample of active galactic nuclei (AGN) in the local Universe. For each galaxy, we used a 10-band radio-to-X-ray spectral energy distribution (SED) to isolate the genuine AGN continuum in each band, including subarcsecond measurements where available, and correcting those contaminated by the host galaxy. We derive the median SED of Seyfert type 1 AGN, Seyferts with hidden broad lines (HBLs), Seyferts of type 2, and LINER nuclei in our sample. The median Seyfert 1 SED shows the characteristic blue bump feature in the UV, but nevertheless, the largest contribution to the bolometric luminosity comes from the IR and X-ray continua. The median SEDs of both HBL and type 2 AGN are affected by starlight contamination in the optical/UV. The median SED of HBL AGN is consistent with that of Seyfert 1s, when an extinction of A _V ∼ 1.2 mag is applied. The comprehensive SEDs allowed us to measure accurate bolometric luminosities and derive robust bolometric corrections for the different tracers. The 12 μ m and K -band nuclear luminosities have good linear correlations with the bolometric luminosity, similar to those in the X-rays. We derive bolometric corrections for either continuum bands ( K band, 12 μ m, 2–10 keV, and 14–195 keV) or narrow emission lines (mid-IR high-ionization lines of [O iv ] and [Ne v ] and optical [O iii ] 5007 Å) as well as for combinations of IR continuum and line emission. A combination of continuum plus line emission accurately predicts the bolometric luminosity up to quasar luminosities (∼10 ^46 erg s ^−1 ). |
| first_indexed | 2024-04-24T21:39:57Z |
| format | Article |
| id | doaj.art-e780abb11b0d4f409cbede411665a601 |
| institution | Directory Open Access Journal |
| issn | 1538-4357 |
| language | English |
| last_indexed | 2024-04-24T21:39:57Z |
| publishDate | 2024-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal |
| spelling | doaj.art-e780abb11b0d4f409cbede411665a6012024-03-21T09:01:41ZengIOP PublishingThe Astrophysical Journal1538-43572024-01-01964211710.3847/1538-4357/ad23e4The Spectral Energy Distributions and Bolometric Luminosities of Local AGN: Study of the Complete 12 μm AGN SampleLuigi Spinoglio0https://orcid.org/0000-0001-8840-1551Juan Antonio Fernández-Ontiveros1https://orcid.org/0000-0001-9490-899XMatthew A. Malkan2https://orcid.org/0000-0001-6919-1237Istituto di Astrofisica e Planetologia Spaziali (INAF–IAPS) , Via Fosso del Cavaliere 100, I-00133 Roma, ItalyIstituto di Astrofisica e Planetologia Spaziali (INAF–IAPS) , Via Fosso del Cavaliere 100, I-00133 Roma, Italy; Centro de Estudios de Física del Cosmos de Aragón (CEFCA) , Plaza San Juan 1, E-44001, Teruel, SpainDepartment of Physics and Astronomy , UCLA, Los Angeles, CA 90095-1547, USAWe measure the bolometric luminosity of a complete and unbiased 12 μ m-selected sample of active galactic nuclei (AGN) in the local Universe. For each galaxy, we used a 10-band radio-to-X-ray spectral energy distribution (SED) to isolate the genuine AGN continuum in each band, including subarcsecond measurements where available, and correcting those contaminated by the host galaxy. We derive the median SED of Seyfert type 1 AGN, Seyferts with hidden broad lines (HBLs), Seyferts of type 2, and LINER nuclei in our sample. The median Seyfert 1 SED shows the characteristic blue bump feature in the UV, but nevertheless, the largest contribution to the bolometric luminosity comes from the IR and X-ray continua. The median SEDs of both HBL and type 2 AGN are affected by starlight contamination in the optical/UV. The median SED of HBL AGN is consistent with that of Seyfert 1s, when an extinction of A _V ∼ 1.2 mag is applied. The comprehensive SEDs allowed us to measure accurate bolometric luminosities and derive robust bolometric corrections for the different tracers. The 12 μ m and K -band nuclear luminosities have good linear correlations with the bolometric luminosity, similar to those in the X-rays. We derive bolometric corrections for either continuum bands ( K band, 12 μ m, 2–10 keV, and 14–195 keV) or narrow emission lines (mid-IR high-ionization lines of [O iv ] and [Ne v ] and optical [O iii ] 5007 Å) as well as for combinations of IR continuum and line emission. A combination of continuum plus line emission accurately predicts the bolometric luminosity up to quasar luminosities (∼10 ^46 erg s ^−1 ).https://doi.org/10.3847/1538-4357/ad23e4Active galactic nucleiAGN host galaxiesSeyfert galaxiesInfrared photometryInfrared spectroscopyUltraviolet photometry |
| spellingShingle | Luigi Spinoglio Juan Antonio Fernández-Ontiveros Matthew A. Malkan The Spectral Energy Distributions and Bolometric Luminosities of Local AGN: Study of the Complete 12 μm AGN Sample The Astrophysical Journal Active galactic nuclei AGN host galaxies Seyfert galaxies Infrared photometry Infrared spectroscopy Ultraviolet photometry |
| title | The Spectral Energy Distributions and Bolometric Luminosities of Local AGN: Study of the Complete 12 μm AGN Sample |
| title_full | The Spectral Energy Distributions and Bolometric Luminosities of Local AGN: Study of the Complete 12 μm AGN Sample |
| title_fullStr | The Spectral Energy Distributions and Bolometric Luminosities of Local AGN: Study of the Complete 12 μm AGN Sample |
| title_full_unstemmed | The Spectral Energy Distributions and Bolometric Luminosities of Local AGN: Study of the Complete 12 μm AGN Sample |
| title_short | The Spectral Energy Distributions and Bolometric Luminosities of Local AGN: Study of the Complete 12 μm AGN Sample |
| title_sort | spectral energy distributions and bolometric luminosities of local agn study of the complete 12 μm agn sample |
| topic | Active galactic nuclei AGN host galaxies Seyfert galaxies Infrared photometry Infrared spectroscopy Ultraviolet photometry |
| url | https://doi.org/10.3847/1538-4357/ad23e4 |
| work_keys_str_mv | AT luigispinoglio thespectralenergydistributionsandbolometricluminositiesoflocalagnstudyofthecomplete12mmagnsample AT juanantoniofernandezontiveros thespectralenergydistributionsandbolometricluminositiesoflocalagnstudyofthecomplete12mmagnsample AT matthewamalkan thespectralenergydistributionsandbolometricluminositiesoflocalagnstudyofthecomplete12mmagnsample AT luigispinoglio spectralenergydistributionsandbolometricluminositiesoflocalagnstudyofthecomplete12mmagnsample AT juanantoniofernandezontiveros spectralenergydistributionsandbolometricluminositiesoflocalagnstudyofthecomplete12mmagnsample AT matthewamalkan spectralenergydistributionsandbolometricluminositiesoflocalagnstudyofthecomplete12mmagnsample |