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Precision spectrophotometry for PNLF distances: the case of NGC 300

Published online by Cambridge University Press:  06 October 2025

Azlizan A. Soemitro Open the ORCID record for Azlizan A. Soemitro [Opens in a new window] ,
Martin M. Roth Open the ORCID record for Martin M. Roth [Opens in a new window] ,
Peter M. Weilbacher ,
Robin Ciardullo ,
George H. Jacoby Open the ORCID record for George H. Jacoby [Opens in a new window] ,
Ana Monreal-Ibero ,
Norberto Castro  and
Genoveva Micheva
Azlizan A. Soemitro*
Affiliation:
Leibniz-Institut für Astrophysik Potsdam (AIP), Germany Universität Potsdam, Germany
Martin M. Roth
Affiliation:
Leibniz-Institut für Astrophysik Potsdam (AIP), Germany Universität Potsdam, Germany
Peter M. Weilbacher
Affiliation:
Leibniz-Institut für Astrophysik Potsdam (AIP), Germany
Robin Ciardullo
Affiliation:
Department of Astronomy & Astrophysics, The Pennsylvania State University, USA
George H. Jacoby
Affiliation:
NSF’s NOIRLab, Tucson, USA
Ana Monreal-Ibero
Affiliation:
Leiden Observatory, Leiden University, The Netherlands
Norberto Castro
Affiliation:
Leibniz-Institut für Astrophysik Potsdam (AIP), Germany
Genoveva Micheva
Affiliation:
Leibniz-Institut für Astrophysik Potsdam (AIP), Germany
*
email: asoemitro@aip.de
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Abstract

The Multi-Unit Spectroscopic Explorer (MUSE) has enabled a renaissance of the planetary nebula luminosity function (PNLF) as a standard candle. In the case of NGC 300, we learned that the precise spectrophotometry of MUSE was crucial to obtain an accurate PNLF distance. We present the advantage of the integral field spectrograph compared to the slit spectrograph in delivering precise spectrophotometry by simulating a slit observation on integral field spectroscopy data. We also discuss the possible systematic shift in measuring the PNLF distance using the least-square method, especially when the PNLF cutoff is affected by small number statistics.

Keywords

galaxies: luminosity functionstars: planetary nebulae

Information

Type
Contributed Paper
Information
Proceedings of the International Astronomical Union , Volume 19 , Symposium S384: Planetary Nebulae: A Universal Toolbox in the Era of Precision Astrophysics , December 2023 , pp. 63 - 68
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Copyright
© The Author(s), 2025. Published by Cambridge University Press on behalf of International Astronomical Union

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