Accretion in young, low-mass stars causes emission from X-ray to NIRwavelengths. The UV emission component of protostellar accretion will be studiedby the HST DDT legacy program ULLYSES in a once-in-a-generation investment ofHST resources. However, most of the accretion-powered emission, including the UVregime, is reprocessed X-ray radiation from the immediate post-shock emission.Therefore, we propose simultaneous XMM-Newton RGS spectroscopy accompanying theULLYSES monitoring targets (3 stars, 5 epochs each). This will allow us, for thefirst time, to directly identify physically related phenomena through theirshared variability and to decipher the physics of accretion throughline-resolved spectroscopy at X-ray and UV wavelengths.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2021-08-11T06:13:22Z/2021-09-08T03:59:21Z
Version
19.16_20210326_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.
European Space Agency, Dr Christian Schneider, 2022, 'HERA: High-Energy Radiation from Accretion in young stars', 19.16_20210326_1200, European Space Agency, https://doi.org/10.57780/esa-lkhs738
