A dataset provided by the European Space Agency

Name 076305
Title Accretion, Flares and a Very Hot Corona in the cool AGB Star, Y Gem


DOI https://doi.org/10.5270/esa-c8r4gtf
Author Dr Raghvendra Sahai
Description We propose to make multi-epoch, co-eval observations of the X-ray emission from a cool AGB star, Y Gem. In dramatic contrast to most objects in its class, this star shows relatively strong X-ray emission implying the presence of virgul50-150 million degree coronal gas, and highly-variable FUV and NUV fluxes - likely evidence of variable accretion onto a magnetized accretion disk in a binary system. Y Gem is the most prominent member of a new class of AGB stars with FUV excesses identified using the GALEX archive. Our study will enable us to investigate the never-before explored phase of an active accretion disk in an AGB star with a binary companion. Such disks are believed to ultimately produce collimated jets that transform AGB circumstellar envelopes into bipolar planetary nebulae.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2015-09-29T01:52:04Z/2015-10-23T05:16:36Z
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 2016-10-30T22:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2016-10-30T22:00:00Z, 076305, 17.56_20190403_1200. https://doi.org/10.5270/esa-c8r4gtf