| Proposal ID | 080229 |
| Title | V630 Cas and V1017 Sgr: Probing Accretion Disks on Intermediate Scales |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0802290201 |
| DOI | https://doi.org/10.5270/esa-v66ekzj |
| Principal Investigator, PI | Dr Koji Mukai |
| Abstract | V630 Cas and V1017 Sgr are long-period cataclysmic variables with rare,long-duration, dwarf nova outbursts. The characteristics of these outbursts arelikely shaped by the large physical size of the accretion disks. They alsoappear to be luminous (> 10e33 ergs/s) X-ray sources in quiescence, severelychallenging the disk instability model. Here we propose XMM-Newton observationsof these objects to obtain X-ray spectra of sufficient quality to constrain thewhite dwarf mass and the accretion rate. We also propose to obtain fast UVphotometry with the OM, since UV flickering has emerged as a key diagnostic ofaccretion for the related class of symbiotic stars. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2018-03-23T03:26:04Z/2018-03-23T14:42:45Z |
| 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 | 2019-04-19T22:00:00Z |
| Keywords | "v630 cas", "disk instability model", "XMM-Newton", "key diagnostic", "xmm newton", "accretion rate", "symbiotic stars", "accretion dis", "v1017 sgr", "dwarf nova outburst", "xray spectra", "10e33 ergs", "white dwarf mass", "XMM", "uv flickering", "fast uv photometry", "related class", "intermediate scales", "physical size", "probing accretion dis", "xray sources", "period cataclysmic variables" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Koji Mukai, 2019, 'V630 Cas and V1017 Sgr: Probing Accretion Disks on Intermediate Scales', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-v66ekzj |