Please use this identifier to cite or link to this item:
https://doi.org/10.21256/zhaw-4915Full metadata record
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | De Lorenzi, Flavio | - |
| dc.contributor.author | Hartmann, Markus | - |
| dc.contributor.author | Debattista, Victor P. | - |
| dc.contributor.author | Seth, Anil C. | - |
| dc.contributor.author | Gerhard, Ortwin | - |
| dc.date.accessioned | 2018-11-30T13:56:10Z | - |
| dc.date.available | 2018-11-30T13:56:10Z | - |
| dc.date.issued | 2013-03 | - |
| dc.identifier.issn | 1365-2966 | de_CH |
| dc.identifier.issn | 0035-8711 | de_CH |
| dc.identifier.uri | https://digitalcollection.zhaw.ch/handle/11475/13435 | - |
| dc.description | erworben im Rahmen der Schweizer Nationallizenzen (www.nationallizenzen.ch) | de_CH |
| dc.description.abstract | Adaptive optics observations of the flattened nuclear star cluster in the nearby edge-on spiral galaxy NGC 4244 using the Gemini near-infrared integral field spectrograph (NIFS) have revealed clear rotation. Using these kinematics plus 2MASS photometry, we construct a series of axisymmetric two-component particle dynamical models with our improved version of nmagic, a flexible χ2-made-to-measure code. The models consist of a nuclear cluster disc embedded within a spheroidal particle population. We find a mass for the nuclear star cluster of M=1.6+0.5−0.2×107M_sun within ∼42.4 pc (2 arcsec). We also explore the presence of an intermediate-mass black hole and show that models with a black hole as massive as M=5.0×105M_sun are consistent with the available data. Regardless of whether a black hole is present or not, the nuclear cluster is vertically anisotropic (βz < 0), as was found with earlier anisotropic Jeans models. We then use the models as initial conditions for N-body simulations. These simulations show that the nuclear star cluster is stable against non-axisymmetric perturbations. We also explore the effect of the nuclear cluster accreting star clusters at various inclinations. Accretion of a star cluster with mass 13 per cent that of the nuclear cluster is already enough to destroy the vertical anisotropy, regardless of orbital inclination. | de_CH |
| dc.language.iso | en | de_CH |
| dc.publisher | Oxford University Press | de_CH |
| dc.relation.ispartof | Monthly Notices of the Royal Astronomical Society | de_CH |
| dc.rights | Licence according to publishing contract | de_CH |
| dc.subject | Astro-ph.GA | de_CH |
| dc.subject.ddc | 500: Naturwissenschaften | de_CH |
| dc.title | Three-integral multi-component dynamical models and simulations of the nuclear star cluster in NGC 4244 | de_CH |
| dc.type | Beitrag in wissenschaftlicher Zeitschrift | de_CH |
| dcterms.type | Text | de_CH |
| zhaw.departement | School of Engineering | de_CH |
| zhaw.organisationalunit | Institut für Angewandte Mathematik und Physik (IAMP) | de_CH |
| dc.identifier.doi | 10.21256/zhaw-4915 | - |
| dc.identifier.doi | 10.1093/mnras/sts545 | de_CH |
| zhaw.funding.eu | No | de_CH |
| zhaw.issue | 4 | de_CH |
| zhaw.originated.zhaw | Yes | de_CH |
| zhaw.pages.end | 2985 | de_CH |
| zhaw.pages.start | 2974 | de_CH |
| zhaw.publication.status | publishedVersion | de_CH |
| zhaw.volume | 429 | de_CH |
| zhaw.publication.review | Peer review (Publikation) | de_CH |
| Appears in collections: | Publikationen School of Engineering | |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 2013_De_Lorenzi_Three-integral_multi-component_dynamical_models.pdf | 2.71 MB | Adobe PDF |  View/Open |
Show simple item record
De Lorenzi, F., Hartmann, M., Debattista, V. P., Seth, A. C., & Gerhard, O. (2013). Three-integral multi-component dynamical models and simulations of the nuclear star cluster in NGC 4244. Monthly Notices of the Royal Astronomical Society, 429(4), 2974–2985. https://doi.org/10.21256/zhaw-4915
De Lorenzi, F. et al. (2013) ‘Three-integral multi-component dynamical models and simulations of the nuclear star cluster in NGC 4244’, Monthly Notices of the Royal Astronomical Society, 429(4), pp. 2974–2985. Available at: https://doi.org/10.21256/zhaw-4915.
F. De Lorenzi, M. Hartmann, V. P. Debattista, A. C. Seth, and O. Gerhard, “Three-integral multi-component dynamical models and simulations of the nuclear star cluster in NGC 4244,” Monthly Notices of the Royal Astronomical Society, vol. 429, no. 4, pp. 2974–2985, Mar. 2013, doi: 10.21256/zhaw-4915.
DE LORENZI, Flavio, Markus HARTMANN, Victor P. DEBATTISTA, Anil C. SETH und Ortwin GERHARD, 2013. Three-integral multi-component dynamical models and simulations of the nuclear star cluster in NGC 4244. Monthly Notices of the Royal Astronomical Society. März 2013. Bd. 429, Nr. 4, S. 2974–2985. DOI 10.21256/zhaw-4915
De Lorenzi, Flavio, Markus Hartmann, Victor P. Debattista, Anil C. Seth, and Ortwin Gerhard. 2013. “Three-Integral Multi-Component Dynamical Models and Simulations of the Nuclear Star Cluster in NGC 4244.” Monthly Notices of the Royal Astronomical Society 429 (4): 2974–85. https://doi.org/10.21256/zhaw-4915.
De Lorenzi, Flavio, et al. “Three-Integral Multi-Component Dynamical Models and Simulations of the Nuclear Star Cluster in NGC 4244.” Monthly Notices of the Royal Astronomical Society, vol. 429, no. 4, Mar. 2013, pp. 2974–85, https://doi.org/10.21256/zhaw-4915.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.