Asteroseismology of Long-period Variables with OGLE-IV Data: Using Global Seismic Parameters as Luminosity Indicators Article Swipe
Qiang 强 Xiong 熊
,
Tanda Li
,
Jie Yu
,
Zhiwen 志文 Li 李
,
Shaolan Bi
,
Xianfei Zhang
,
Haibo Yuan
,
I. Soszyński
,
A. Udalski
,
M. K. Szymański
,
D. M. Skowron
,
J. Skowron
,
P. Pietrukowicz
,
R. Poleski
,
S. Kozłowski
,
P. Mróz
,
K. Ulaczyk
,
Krzysztof A. Rybicki
,
Patryk Iwanek
,
Marcin Wrona
,
M. Gromadzki
,
Mateusz J. Mróz
·
YOU?
·
· 2025
· Open Access
·
· DOI: https://doi.org/10.3847/1538-4357/adc603
YOU?
·
· 2025
· Open Access
·
· DOI: https://doi.org/10.3847/1538-4357/adc603
Long-period variables (LPVs) are high-luminosity red giants or supergiants with pulsation periods ranging from days to years. Many LPVs in the Large Magellanic Cloud (LMC) and Galactic bulge (BLG) have been continuously observed over a time span of 26 yr by the Optical Gravitational Lensing Experiment (OGLE) survey. Using OGLE-IV data, we applied Gaussian processes with kernels tailored for solar-like oscillations to extract two global asteroseismic parameters—the frequency of maximum power ( ) and the large frequency separation (Δ ν )—for LPVs with primary mode periods ( P 1) between 10 and 100 days in the LMC and BLG. We found that the -Δ ν relation for LPVs in this work aligns with that of lower-luminosity Kepler red giants, confirming that the pulsations of these LPVs are likely solar like. We found that and Δ ν can serve as luminosity indicators. Compared to P 1, and Δ ν exhibit significantly tighter correlations with the absolute magnitude in the Two Micron All Sky Survey K s band ( M K ), with corresponding scatter of 0.27 and 0.21 mag, respectively. Using the calibrated – M K and Δ ν – M K relations for LPVs in the LMC, we determined the M K values for individual stars in the BLG. By accounting for extinction, we further calculated the distances to 4948 BLG stars. The peak of the resulting distance distribution corresponds to an estimated distance to the Galactic center of approximately 9.1 kpc, which appears to be overestimated, suggesting that the seismic luminosity relation calibrated from the LMC may not be directly applicable to BLG stars.
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Metadata
- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.3847/1538-4357/adc603
- OA Status
- gold
- References
- 52
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4409867085
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Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W4409867085Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.3847/1538-4357/adc603Digital Object Identifier
- Title
-
Asteroseismology of Long-period Variables with OGLE-IV Data: Using Global Seismic Parameters as Luminosity IndicatorsWork title
- Type
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articleOpenAlex work type
- Language
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enPrimary language
- Publication year
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2025Year of publication
- Publication date
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2025-04-28Full publication date if available
- Authors
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Qiang 强 Xiong 熊, Tanda Li, Jie Yu, Zhiwen 志文 Li 李, Shaolan Bi, Xianfei Zhang, Haibo Yuan, I. Soszyński, A. Udalski, M. K. Szymański, D. M. Skowron, J. Skowron, P. Pietrukowicz, R. Poleski, S. Kozłowski, P. Mróz, K. Ulaczyk, Krzysztof A. Rybicki, Patryk Iwanek, Marcin Wrona, M. Gromadzki, Mateusz J. MrózList of authors in order
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https://doi.org/10.3847/1538-4357/adc603Publisher landing page
- Open access
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YesWhether a free full text is available
- OA status
-
goldOpen access status per OpenAlex
- OA URL
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https://doi.org/10.3847/1538-4357/adc603Direct OA link when available
- Concepts
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Asteroseismology, Physics, Luminosity, Astrophysics, Astronomy, Variable star, Period (music), Stars, Galaxy, AcousticsTop concepts (fields/topics) attached by OpenAlex
- Cited by
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0Total citation count in OpenAlex
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52Number of works referenced by this work
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10Other works algorithmically related by OpenAlex
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| primary_location.raw_source_name | The Astrophysical Journal |
| primary_location.landing_page_url | https://doi.org/10.3847/1538-4357/adc603 |
| publication_date | 2025-04-28 |
| publication_year | 2025 |
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