| Proposal ID | 040319 |
| Title | Cosmic downsizing from an X-ray survey of active SDSS galaxies |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0403190801 |
| DOI | https://doi.org/10.5270/esa-q9yg65a |
| Principal Investigator, PI | Dr Lance Miller |
| Abstract | 15 percent of local galaxies in SDSS have optical emission lines indicating anactive nucleus. We propose an XMM survey of a complete sample of z less than0.05 SDSS galaxies that have these optical AGN signatures. The sample hasmeasurements of inferred black hole mass, galaxy host type and structure,stellar mass, star formation rate and environment and provides a uniqueopportunity to study black hole accretion in the local universe. In particular,in this sample most AGN activity is apparent in moderate-mass black holes: wecan measure cosmic downsizing in action at low redshift directly from theX-ray emission, link OIII measurement of accretion to hard-X-ray measurementacross a range of AGN and galaxy types and measure X-ray absorption in a homogeneous sample. |
| Publications |
|
| Instrument | EMOS1, EMOS2, EPN, RGS1, RGS2 |
| Temporal Coverage | 2007-02-08T03:37:44Z/2007-04-17T01:27:32Z |
| Version | 17.56_20190403_1200 |
| Mission Description | The European Space Agencys (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESAs second cornerstone of the Horizon 2000 Science Programme. It carries 3 high throughput X-ray telescopes with an unprecedented effective area, and an optical monitor, the first flown on a X-ray observatory. The large collecting area and ability to make long uninterrupted exposures provide highly sensitive observations. Since Earths atmosphere blocks out all X-rays, only a telescope in space can detect and study celestial X-ray sources. The XMM-Newton mission is helping scientists to solve a number of cosmic mysteries, ranging from the enigmatic black holes to the origins of the Universe itself. Observing time on XMM-Newton is being made available to the scientific community, applying for observational periods on a competitive basis. |
| Creator Contact | https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk |
| Date Published | 2008-05-01T00:00:00Z |
| Last Update | 2025-01-27 |
| Keywords | "active sdss galaxy", "cosmic downsizing", "complete sample", "active nucleus", "homogeneous sample", "inferred blackhole mass", "xmm survey", "SDSS", "local universe", "blackhole accretion", "xray emission", "optical emission lines", "galaxy types", "xray absorption", "stellar mass", "low redshift", "agn activity", "star formation rate", "05 sdss galaxy", "XMM", "xray survey", "optical agn signatures", "local galaxy" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Lance Miller, 2008, 'Cosmic downsizing from an X-ray survey of active SDSS galaxies', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-q9yg65a |