| Name | 055588 |
| Title | X-ray Investigation of Origins of Dust Disks around Hot White Dwarfs |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0555880101 |
| DOI | https://doi.org/10.5270/esa-tcfvti7 |
| Author | European Space Agency |
| Description | The Helix Nebula.s central star, a hot white dwarf (WD), exhibits hard X-rays and strong mid-IR emission that are not expected from its photosphere. An external cause is required, but no direct evidence for a binary companion exists at optical and near-IR wavelengths. It is not clear whether the hard X-ray and mid-IR emissions are related. From our Spitzer Space Telescope 24 micron survey of hot WDs, we found excess mid-IR emission from WD 0127+581 in the planetary nebula (PN) Sh2-188 and the central star of PN K1-22. We request XMM-Newton observations of these two WDs to establish the relationship between hard X-ray emission and mid-IR excess, and to determine whether they are associated with Kuiper Belt-like objects or common-envelope binary evolution. |
| Publication | No observations found associated with the current proposal |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2008-06-13T07:02:02Z/2008-09-03T16:53:02Z |
| Version | 17.56_20190403_1200 |
| Mission Description | The European Space Agency's (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESA's 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 Earth's 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 | 2009-10-23T00:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2009, X-Ray Investigation Of Origins Of Dust Disks Around Hot White Dwarfs, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-tcfvti7 |