Please use this identifier to cite or link to this item:
http://hdl.handle.net/2289/7261Full metadata record
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | Vasiliev, Evgenii O. | - |
| dc.contributor.author | Shchekinov, Yuri | - |
| dc.contributor.author | Nath, Biman B. | - |
| dc.date.accessioned | 2019-08-05T17:57:12Z | - |
| dc.date.available | 2019-08-05T17:57:12Z | - |
| dc.date.issued | 2019-07 | - |
| dc.identifier.citation | Monthly Notices of the Royal Astronomical Society, 2019, Vol.486, p3685–3696 | en_US |
| dc.identifier.issn | 0035-8711 | - |
| dc.identifier.issn | 1365-2966 - (online) | - |
| dc.identifier.uri | http://hdl.handle.net/2289/7261 | - |
| dc.description | Open Access | en_US |
| dc.description.abstract | Galactic gas outflows are driven by stellar feedback with dominant contribution from supernova (SN) explosions. The question of whether the energy deposited by SNe initiates a large-scale outflow or gas circulation on smaller scales - between discs and intermediate haloes - depends on SN rate and their distribution in space and time. We consider here gas circulation by disc-wide unclustered SNe with galactic star formation rate (SFR) in the range from ≃6 × 10-4 to ≃6 × 10-2 M☉ yr-1 kpc-2, corresponding to mid-to-high star formation (SF) observed in galaxies. We show that such disc-wide SN explosion regime can form circulation of warm (T ̃ 104 K) and cold (T < 103 K) phases within a few gas scale heights, and elevation of hot (T > 105 K) gas at higher (z > 1 kpc) heights. We found that the threshold energy input rate for hot gas outflows with disc-wide SN explosions is estimated to be of the order ̃4 × 10-4 erg s-1 cm-2. We discuss the observational manifestations of such phenomena in optical and X-ray bands. In particular, we found that for face-on galaxies with SF (Σ _{_SF}> 0.02 M_☉ yr-1 kpc-2), the line profiles of ions typical for warm gas show a double-peak shape, corresponding to out-of-plane outflows. In the X-ray bands, galaxies with high SFRs (Σ _{_SF}> 0.006 M_☉ yr-1 kpc-2) can be bright, with a smooth surface brightness in low-energy bands (0.1-0.3 keV) and patchy at higher energies (1.6-8.3 keV). | en_US |
| dc.language.iso | en | en_US |
| dc.publisher | Oxford University Press on behalf of the Royal Astronomical Society | en_US |
| dc.relation.uri | https://ui.adsabs.harvard.edu/abs/2019MNRAS.486.3685V/abstract | en_US |
| dc.relation.uri | https://arxiv.org/abs/1901.00821 | en_US |
| dc.relation.uri | https://doi.org/10.1093/mnras/stz1099 | en_US |
| dc.rights | 2019 The Author(s) | en_US |
| dc.subject | shock waves – ISM | en_US |
| dc.subject | bubbles – galaxies | en_US |
| dc.subject | ISM | en_US |
| dc.title | Launching of hot gas outflow by disc-wide supernova explosions | en_US |
| dc.type | Article | en_US |
| Appears in Collections: | Research Papers (A&A) | |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 2019_MNRAS_Vol.486_p3685-3696.pdf | Open Access | 6.45 MB | Adobe PDF | View/Open |
Items in RRI Digital Repository are protected by copyright, with all rights reserved, unless otherwise indicated.