| Name | OT2_hnetzer_4 |
| Title | Star Formation and Black Hole Growth from z=4.8 to z=2.4 |
| URL | http://archives.esac.esa.int/hsa/whsa-tap-server/data?retrieval_type=OBSERVATION&observation_id=1342270203&instrument_name=SPIRE&product_level=LEVEL0&compress=true |
| DOI | https://doi.org/10.5270/esa-7ti116e |
| Author | netzer, h. |
| Description | This is the second of a two part Herschel project to follow star formation (SF) in intervals of about 700 Myrs, in host galaxies of the most massive black holes (BHs). The first part, which includes 40 AGNs at z=4.8 (t(Universe)=1.2 Gyrs), has been granted time in OT1 and is already providing spectacular results:SFR as high as any observed before, including the most luminous SMGs, and L(SF) way above the prediction of the standard L(AGN)-L(SF) correlation.The present part focuses on the most luminous AGNs at z=2.4 and z=3.5. The z=3.5 group is a flux limited optical sample of the most luminous AGNs. The one at z=2.4 contains 42 BHs with known masses measured by the most reliable Hbeta-based method.The combination of the samples, that are likely to represent three stages in the evolution of the most massive BHs, will allow us to answer several fundamental questions related to the connection between SF and BH activity. 1. What are the relationships between L(AGN) and L(SF) at z=4.8, 3.5 and 2.4?2. What fraction of the hosts of the most luminous AGNs have already finished, or substantially reduced, their accumulation of stellar mass at every redshift?3. Can we infer the accumulation of stellar mass through the two periods of about 700 Myrs, and hence the SF duty cycle, assuming these sources will become the most massive galaxies in the local Universe? The z=2.4 sample will be observed with both PACS and SPIRE and the z=3.5 sample only with SPIRE. The total requested Herschel time is 46.4 hours. |
| Publication |
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| Instrument | SPIRE_SpirePhoto_small |
| Temporal Coverage | 2013-04-16T18:49:59Z/2013-04-17T14:20:36Z |
| Version | SPG v14.1.0 |
| 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 | 2013-10-17T14:10:53Z |
| 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, netzer et al., 2013, 'Star Formation and Black Hole Growth from z=4.8 to z=2.4', SPG v14.1.0, European Space Agency, https://doi.org/10.5270/esa-7ti116e |