| Name | OT2_ablain_1 |
| Title | Herschel photometry of the nearest radio-quiet quasar |
| URL | http://archives.esac.esa.int/hsa/whsa-tap-server/data?retrieval_type=OBSERVATION&observation_id=1342268376&instrument_name=SPIRE&product_level=LEVEL0&compress=true |
| DOI | https://doi.org/10.5270/esa-kni1up5 |
| Author | blain, a. |
| Description | PDS456 is a southern ultraluminous IRAS galaxy at redshift z=0.18. It hosts one of the nearest powerful optically-visible AGN, and is one of the most extreme known QSOs. It is hidden behind a significant amount of optical extinction, and so its host galaxy is relatively difficult to investigate. It is know to have a very luminous, hot dust SED, and yet is not detected at submm wavelengths. We propose a Herschel PACS and SPIRE photometry observation to determine exactly the broad-band shape of its spectral energy distribution (SED), and to provide a precise determination of its bolometric luminosity. The shape of the SED will provide help in interpreting the role of the AGN and possible star-formation activity in powering this object. Without Herschel, the peak of the SED of this unique source will not be known accurately, even as an excellentunderstanding of its morphology, gas dynamics and astrophysical processes is built up using ground-based adaptive optics imaging, ALMA and JWST. |
| Publication | |
| Instrument | PACS_PacsPhoto_largeScan, SPIRE_SpirePhoto_small |
| Temporal Coverage | 2013-03-25T09:22:12Z/2013-04-01T13:04:36Z |
| Version | SPG v14.2.0 |
| Mission Description | Herschel was launched on 14 May 2009! It is the fourth cornerstone mission in the ESA science programme. With a 3.5 m Cassegrain telescope it is the largest space telescope ever launched. It is performing photometry and spectroscopy in approximately the 55-671 µm range, bridging the gap between earlier infrared space missions and groundbased facilities. |
| Creator Contact | https://support.cosmos.esa.int/h®erschel/ |
| Date Published | 2013-10-01T12:53:24Z |
| Last Update | 2026-03-02 |
| Keywords | Herschel Space Observatory data, ESA Herschel mission dataset, far-infrared astronomy observations, submillimeter astronomy data, infrared space telescope observations, PACS photometer data, PACS spectrometer data, SPIRE photometer data, SPIRE Fourier transform spectrometer data, HIFI heterodyne spectroscopy data, far-infrared spectroscopy dataset, submillimeter spectral line observations, cold universe observations dataset, star formation infrared data, molecular cloud far-infrared observations, interstellar medium spectroscopy data, protoplanetary disk infrared observations, galaxy evolution far-infrared data, dust emission submillimeter observations, cosmic infrared background measurements, extragalactic infrared survey data, calibrated level 2 data products, FITS files astronomy, spectral cubes far-infrared, flux-calibrated maps, continuum photometry data, spectral energy distribution measurements, ESA Herschel Science Archive data |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, blain et al., 2013, 'Herschel photometry of the nearest radio-quiet quasar', SPG v14.2.0, European Space Agency, https://doi.org/10.5270/esa-kni1up5 |