Unveiling the nuclear region of NGC 6868: Mapping the stellar population and ionized gas
| Autor: | J. E. Steiner, Tiago V. Ricci, João P. V. Benedetti, D. Ruschel-Dutra, Miriani Griselda Pastoriza, Rogemar A. Riffel, Juliana C. Motter, Rogério Riffel |
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| Rok vydání: | 2020 |
| Předmět: |
Physics
Stellar kinematics Stellar population Astronomy and Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics Plasma Astrophysics Rotation Galaxy Starlight Space and Planetary Science Astrophysics::Solar and Stellar Astrophysics Astrophysics::Earth and Planetary Astrophysics Emission spectrum Spectrograph Astrophysics::Galaxy Astrophysics |
| Zdroj: | Proceedings of the International Astronomical Union. 15:418-420 |
| ISSN: | 1743-9221 1743-9213 |
| DOI: | 10.1017/s1743921320001994 |
| Popis: | We mapped the stellar population and emission gas properties in the nuclear region of NGC 6868 using datacubes extracted with Gemini Multi-Object Spectrograph (GMOS) in the Integral Field Unit (IFU) mode. To obtain the star-formation history of this galaxy we used the starlight code together with the new generation of MILES simple stellar population models. The stellar population dominating (95% in light fraction) the central region of NGC 6868 is old and metal rich (~10 Gyr, 2.2 Z⊙). We also derived the kinematics and emission line fluxes of ionized gas with the IFSCube package. A rotation disk is clearly detected in the nuclear region of the galaxy and no broad components were detected. Also, there is a region where the emission lines disappear almost completely, probably due to diffuse ionized gas component. Channel maps, diagnostic diagrams and stellar kinematics are still under analysis. |
| Databáze: | OpenAIRE |
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