Symbiotic stars in X-rays II: faint sources detected with XMM-Newton and Chandra
| Autor: | N. E. Nuñez, Koji Mukai, Ignazio Pillitteri, Gerardo Juan Manuel Luna |
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| Rok vydání: | 2014 |
| Předmět: |
Physics
High Energy Astrophysical Phenomena (astro-ph.HE) Ciencias Físicas Astrophysics::High Energy Astrophysical Phenomena FOS: Physical sciences Astronomy and Astrophysics purl.org/becyt/ford/1.3 [https] Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics purl.org/becyt/ford/1 [https] Astronomía Stars SYMBIOTICS symbiotic [binaries] Astrophysics - Solar and Stellar Astrophysics Space and Planetary Science X-RAY Astrophysics::Solar and Stellar Astrophysics binaries [X-rays] Astrophysics - High Energy Astrophysical Phenomena CIENCIAS NATURALES Y EXACTAS Astrophysics::Galaxy Astrophysics Solar and Stellar Astrophysics (astro-ph.SR) |
| Zdroj: | CONICET Digital (CONICET) Consejo Nacional de Investigaciones Científicas y Técnicas instacron:CONICET |
| DOI: | 10.48550/arxiv.1402.6790 |
| Popis: | We report the detection, with ${\it Chandra}$ and XMM-${\it Newton}$, of faint, soft X-ray emission from four symbiotics stars that were not known to be X-ray sources. These four object show a $\beta$-type X-ray spectrum, i.e. their spectra can be modeled with an absorbed optically thin thermal emission with temperatures of a few million degrees. Photometric series obtained with the Optical Monitor on board XMM-${\it Newton}$ from V2416 Sgr and NSV 25735 support the proposed scenario where the X-ray emission is produced in a shock-heated region inside the symbiotic nebulae. Comment: 5 pages, 1 figure, 2 tables; A&A published |
| Databáze: | OpenAIRE |
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