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pro vyhledávání: '"Bissantz N"'
In a recent paper Birke and Bissantz (2008) considered the problem of nonparametric estimation in inverse regression models with convolution-type operators. For multivariate predictors nonparametric methods suffer from the curse of dimensionality and
Externí odkaz:
http://arxiv.org/abs/1303.4179
Publikováno v:
MNRAS, 395, 2304 (2009)
N-body simulations are widely used to simulate the dynamical evolution of a variety of systems, among them star clusters. Much of our understanding of their evolution rests on the results of such direct N-body simulations. They provide insight in the
Externí odkaz:
http://arxiv.org/abs/0902.4636
Publikováno v:
Mon.Not.Roy.Astron.Soc.377:91-106,2007
The luminosity functions (LFs) of star cluster systems (i.e. the number of clusters per luminosity interval) are vital diagnostics to probe the conditions of star cluster formation. Early studies have revealed a clear dichotomy between old globular c
Externí odkaz:
http://arxiv.org/abs/astro-ph/0702413
Publikováno v:
Mon.Not.Roy.Astron.Soc.347:196,2004
We discuss the systematic uncertainties inherent to analyses of observed (broad-band) Spectral Energy Distributions (SEDs) of star clusters with evolutionary synthesis models. We investigate the effects caused by restricting oneself to a limited numb
Externí odkaz:
http://arxiv.org/abs/astro-ph/0309356
Publikováno v:
Mon.Not.Roy.Astron.Soc.347:17,2004
We analyse multi-wavelength Hubble Space Telescope (HST) observations of a large number of star clusters in the nearby (post-) starburst dwarf galaxy NGC 1569. Their spectral energy distributions (SEDs) cover at least the wavelength range from U to I
Externí odkaz:
http://arxiv.org/abs/astro-ph/0309153
We present new gas flow models for the Milky Way inside the solar circle. Using a mass model derived from the COBE/DIRBE maps and clump giant star counts, and using a parametric model for the spiral arm pattern in the disk, we calculate the gas flow
Externí odkaz:
http://arxiv.org/abs/astro-ph/0308250
In astrophysical (inverse) regression problems it is an important task to decide whether a given parametric model describes the observational data sufficiently well or whether a non-parametric modelling becomes necessary. However, in contrast to comm
Externí odkaz:
http://arxiv.org/abs/astro-ph/0301169
Autor:
Bissantz, N., Munk, A.
Publikováno v:
Mon.Not.Roy.Astron.Soc. 336 (2002) 131
A common problem in physics is to fit regression data by a parametric class of functions, and to decide whether a certain functional form allows for a good fit of the data. Common goodness of fit methods are based on the calculation of the distributi
Externí odkaz:
http://arxiv.org/abs/astro-ph/0205536
We examine the left-right asymmetry in the cleaned COBE/DIRBE near-infrared data of the inner Galaxy and show (i) that the Galactic bar is probably not seen very nearly end-on, and (ii) that even if it is, it is not highly elongated. The assumption o
Externí odkaz:
http://arxiv.org/abs/astro-ph/9612026
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