Mass Outflow of the X-ray Emission Line Gas in NGC 4151
| العنوان: | Mass Outflow of the X-ray Emission Line Gas in NGC 4151 |
|---|---|
| المؤلفون: | Travis Fischer, T. J. Turner, Henrique R. Schmitt, D. M. Crenshaw, S. B. Kraemer, Mitchell Revalski, J. D. Couto |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Physics, 010308 nuclear & particles physics, Drop (liquid), Astrophysics::High Energy Astrophysical Phenomena, Order (ring theory), FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, Astrophysics - Astrophysics of Galaxies, Galaxy, Spectral line, Space and Planetary Science, Ionization, Astrophysics of Galaxies (astro-ph.GA), 0103 physical sciences, Outflow, Emission spectrum, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, Line (formation) |
| الوصف: | We have analysed Chandra/High Energy Transmission Gratings spectra of the X-ray emission line gas in the Seyfert galaxy NGC 4151. The zeroth order spectral images show extended H- and He-like O and Ne, up to a distance $r \sim$ 200 pc from the nucleus. Using the 1st order spectra, we measure an average line velocity $\sim -230$ km s$^{-1}$, suggesting significant outflow of X-ray gas. We generated Cloudy photoionisation models to fit the 1st order spectra. We required three emission-line components, with column density, log$N_{H}$, and ionisation parameter, log$U$, of 22.5/1.0, 22.5/0.19, and 23.0/-0.50, respectively. To estimate the total mass of ionised gas and the mass outflow rates, we applied the model parameters to fit the zeroth order emission-line profiles of Ne~IX and Ne~X. We determined the total mass of $\approx 5.4 \times$ 10$^{5}$ M_sun. Assuming the same kinematic profile as that for the [O~III] gas, the peak X-ray mass outflow rate was $\approx 1.8$ M_sun yr$^{-1}$, at $r \sim 150$ pc. The total mass and mass outflow rates are similar to those determined using [O~III], implying that the X-ray gas is a major outflow component. However, unlike the optical outflows, the X-ray outflow rate does not drop off at $r >$ 100 pc, which suggests that it may have a greater impact on the host galaxy. 19 pages, 12 figures. Accepted for publication in the Monthly Notices of the Royal Astronomical Society |
| اللغة: | English |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f5e2305d778856b5d210b4273e046f7e http://arxiv.org/abs/2002.05806 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....f5e2305d778856b5d210b4273e046f7e |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |