| Proposal ID | 040641 |
| Title | Understanding the nature of Seyfert 2 Galaxy VV 780 - IC4518 |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0406410101 |
| DOI | https://doi.org/10.5270/esa-wd6gl0s |
| Principal Investigator, PI | Dr Emrah Kalemci |
| Abstract | We discovered hard X-ray emission from Seyfert 2 galaxy VV 780 with INTEGRAL. VV780 is an interacting galaxy pair at an early stage of merger. Its soft X-rayproperties point to an highly obscured AGN. The sample of early merger Sy2s thatare observed in X-rays is limited and they may hold important clues tounderstand the onset of starburst and AGN activity. We request one XMM-Newtonobservation of this source, first to verify that the X-ray emitting object inthe ISGRI error circle is VV 780. We will also obtain the spectral parameters ofthe source in soft X-rays with XMM-Newton. Along with the simultaneous RXTEobservation (submitted AO-11), the overall spectrum will enable us to classifythis object, and provide information about the nature of hard and soft X-ray emission. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2006-08-15T09:16:41Z/2006-08-15T16:16:54Z |
| Version | 21.51_20241115_1113 |
| 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 | 2007-09-12T00:00:00Z |
| Last Update | 2026-07-09 |
| Keywords | "merger sy2s", "obscured agn", "overall spectrum", "XMM-Newton", "isgri error circle", "agn activity", "soft xray emission", "hard xray emission", "XMM", "soft xray properties", "galaxy vv 780", "spectral parameters", "soft xray", "submitted ao", "vv 780", "xray emitting object", "xmm newton", "interacting galaxy pair" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Emrah Kalemci, 2007, 'Understanding the nature of Seyfert 2 Galaxy VV 780 - IC4518', 21.51_20241115_1113, European Space Agency, https://doi.org/10.5270/esa-wd6gl0s |
| Rights | Data hosted in the ESA Space Science Archives are distributed under the CC BY-NC 3.0 IGO license. |