The
#AAS Nova blog mentions the PNLF as one of the methods to investigate the Hubble Tension and highlights Jacoby et al. 2024 (where I was able to contribute a little bit).
https://aasnova.org/2024/07/31/monthly-roundup-perspectives-on-the-hubble-tension/ #PNLF #musevlt #H0 #HubbleTension
Monthly Roundup: Perspectives on the Hubble Tension
The Hubble tension is one of the most pressing problems in cosmology. Today, we're looking at five articles that address the Hubble tension — either suggesting ways to alleviate it or staunchly reinforcing its existence.
I am particularly happy that this paper used the MUSE dataset of the Antennae Galaxy and found more than 200 PN candidates in these cubes with the DELF method. The short distance quoted in some H0-related papers now looks like a strong outlier. Here's the animation (Fig. 40) through [OIII]5007.
#AntennaeGalaxy #NGC4038 #NGC4039 #musevlt #PNLFThis is the newest paper on distance measurements using the
#PNLF with MUSE. While the archival datacubes were not optimal for the purpose, we were able to derive indepdentent distance to 17 of 20 galaxies, and determined H0 = 74.2 ± 7.2 (stat) ± 3.7 (sys) km/s/Mpc.
https://iopscience.iop.org/article/10.3847/1538-4365/ad2166#ESO #musevlt #H0Jacoby et al. 2024 "Toward Precision Cosmology with Improved Planetary Nebula Luminosity Function Distances Using VLT-MUSE. II. A Test Sample from Archival Data" is now published in ApJS
https://doi.org/10.3847/1538-4365/ad2166#ESO #musevlt #PNLF #H0A new paper about the MUSE NGC 300 dataset by Azlizan Soemitro appeared on arXiv on Monday. This one is about the Planetary Nebula Luminosity Function (PNLF). I am happy to have made a small contribution.
https://arxiv.org/abs/2301.03437 #musevlt #PNLF #PNeMUSE crowded field 3D spectroscopy in NGC 300 : IV. Planetary nebula luminosity function
We perform a deep survey of planetary nebulae (PNe) in the spiral galaxy NGC
300 to construct its planetary nebula luminosity function (PNLF). We aim to
derive the distance using the PNLF and to probe the characteristics of the most
luminous PNe. We analyse 44 fields observed with MUSE at the VLT, covering a
total area of $\sim11$ kpc$^2$. We find [OIII]5007 sources using the
differential emission line filter (DELF) technique. We identify PNe through
spectral classification using the aid of the BPT-diagram. The PNLF distance is
derived using the maximum likelihood estimation technique. For the more
luminous PNe, we also measure their extinction using the Balmer decrement. We
estimate the luminosity and effective temperature of the central stars of the
luminous PNe, based on estimates of the excitation class and the assumption of
optically thick nebulae. We identify 107 PNe and derive a most-likely distance
modulus $(m-M)_0 = 26.48^{+0.11}_{-0.26}$ ($d = 1.98^{+0.10}_{-0.23}$ Mpc). We
find that the PNe at the PNLF cut-off exhibit relatively low extinction, with
some high extinction cases caused by local dust lanes. We present the lower
limit luminosities and effective temperatures of the central stars for some of
the brighter PNe. We also identify a few Type I PNe that come from a young
population with progenitor masses $>2.5 \, M_\odot$, however do not populate
the PNLF cut-off. The spatial resolution and spectral information of MUSE allow
precise PN classification and photometry. These capabilities also enable us to
resolve possible contamination by diffuse gas and dust, improving the accuracy
of the PNLF distance to NGC 300.
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