Sanders, JL;
(2023)
The period-luminosity relation for Mira variables in the Milky Way using Gaia DR3: a further distance anchor for H<inf>0</inf>.
Monthly Notices of the Royal Astronomical Society
, 523
(2)
pp. 2369-2398.
10.1093/mnras/stad1431.
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Abstract
Gaia DR3 parallaxes are used to calibrate preliminary period-luminosity relations of O-rich Mira variables in the 2MASS J, H, and Ks bands using a probabilistic model accounting for variations in the parallax zero-point and underestimation of the parallax uncertainties. The derived relations are compared to those measured for the Large and Small Magellanic Clouds, the Sagittarius dwarf spheroidal galaxy, globular cluster members, and the subset of Milky Way Mira variables with VLBI parallaxes. The Milky Way linear JHKs relations are slightly steeper and thus fainter at short period than the corresponding LMC relations, suggesting population effects in the near-infrared are perhaps larger than previous observational works have claimed. Models of the Gaia astrometry for the Mira variables suggest that, despite the intrinsic photocentre wobble and use of mean photometry in the astrometric solution of the current data reduction, the recovered parallaxes should be on average unbiased but with underestimated uncertainties for the nearest stars. The recommended Gaia EDR3 parallax zero-point corrections evaluated at require minimal () corrections for redder five-parameter sources, but overcorrect the parallaxes for redder six-parameter sources, and the parallax uncertainties are underestimated at most by a factor ∼1.6 at. The derived period-luminosity relations are used as anchors for the Mira variables in the Type Ia host galaxy NGC 1559 to find.
| Type: | Article |
|---|---|
| Title: | The period-luminosity relation for Mira variables in the Milky Way using Gaia DR3: a further distance anchor for H<inf>0</inf> |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1093/mnras/stad1431 |
| Publisher version: | https://doi.org/10.1093/mnras/stad1431 |
| Language: | English |
| Additional information: | This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third-party material in this article are included in the Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
| Keywords: | stars: AGB, stars: distances, stars: variables: general, cosmological parameters |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10172835 |
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