| Name | 040139 |
| Title | New ultracompact binaries, new opportunities: the case for 1A 1246-588 |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0401390101 |
| DOI | https://doi.org/10.5270/esa-1nyx73k |
| Author | European Space Agency |
| Description | 1A 1246-588 is a persistently accreting low-mass X-ray binary at a distance of 5 kpc and with an absorption of NH=4E21 cm-2. The persistent luminosity is virgul0.5% of the Eddington limit. This puts the source in an interesting accretion regime, possibly due to an ultracompact binary orbit. We propose to observe 1A 1246-588with XMM-Newton and VLT/FORS2 to secure the suspected optical counterpart and ultracompact nature, carry out high-resolution spectroscopy of suspected anomalous abundances of Ne, Fe and O with RGS and H, He, C and O with VLT/FORS2, and to search for an orbital period in the X-ray lightcurve to investigate the evolutionary history of the binary. |
| Publication | No observations found associated with the current proposal |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2006-08-31T21:01:54Z/2006-09-01T08:31:36Z |
| 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 | 2007-09-30T00:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2007, New Ultracompact Binaries Comma New Opportunities: The Case For 1A 1246-588, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-1nyx73k |