arXiv Open Access 2022

A projected Nesterov-Kaczmarz approach to stellar population-kinematic distribution reconstruction in Extragalactic Archaeology

Fabian Hinterer Simon Hubmer Prashin Jethwa Kirk M. Soodhalter Glenn van de Ven +1 lainnya

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Abstrak

In this paper, we consider the problem of reconstructing a galaxy's stellar population-kinematic distribution function from optical integral field unit measurements. These quantities are connected via a high-dimensional integral equation. To solve this problem, we propose a projected Nesterov-Kaczmarz reconstruction (PNKR) method, which efficiently leverages the problem structure and incorporates physical prior information such as smoothness and non-negativity constraints. To test the performance of our reconstruction approach, we apply it to a dataset simulated from a known ground truth density, and validate it by comparing our recoveries to those obtained by the widely used pPXF software.

Topik & Kata Kunci

math.NA astro-ph.GA astro-ph.IM

Penulis (6)

Fabian Hinterer

Simon Hubmer

Prashin Jethwa

Kirk M. Soodhalter

Glenn van de Ven

Ronny Ramlau

Format Sitasi

APA MLA BibTeX

Hinterer, F., Hubmer, S., Jethwa, P., Soodhalter, K.M., Ven, G.v.d., Ramlau, R. (2022). A projected Nesterov-Kaczmarz approach to stellar population-kinematic distribution reconstruction in Extragalactic Archaeology. https://arxiv.org/abs/2206.03925

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Informasi Jurnal

Tahun Terbit: 2022
Bahasa: en
Sumber Database: arXiv
Akses: Open Access ✓