Earl Patrick Bellinger
postdoctoral research fellow //
stellar astrophysics centre
department of physics and astronomy
aarhus university
visiting fellow //
school of physics
university of new south wales
What Can Asteroseismology
Do for Astrophysics?
@ Stars in Melbourne
The Kepler Space Photometry Revolution
Asteroseismology of solar-like stars
Stellar parameters in an instant with machine learning
Bellinger et al. (2016), The Astrophysical Journal, 830 (1), 20
How well can asteroseismology characterize stars?
Bellinger et al. (2019a), Astronomy & Astrophysics, 622, A130
What can asteroseismology do for exoplanets?
Bellinger et al. (2019a), Astronomy & Astrophysics, 622, A130
Testing binary formation theory with asteroseismology
Metcalfe et al. (2012, 2015), Silva Aguirre (2015), Bellinger et al. (2016 ApJ, 2019a A&A)
age of the cosmos
A
B
New results: Testing cosmology with asteroseismology
In collaboration with Victor Silva Aguirre, Emanuelle Spitoni, Amalie Stokholm & others
Theoretical vs. Empirical Age-Metallicity Relations
Auriga cosmological
zoom-in simulations
Red giants observed by Kepler
Age [Gyr]
Age [Gyr]
[Fe/H]
New results: Constraining convective boundary mixing
Angelou, Bellinger & five others, MNRAS submitted
Testing stellar evolution with asteroseismology
Bellinger et al. (2017), The Astrophysical Journal, 851 (2), 80
Measuring differences within stellar interiors between stars and stellar models
in the isothermal speed of sound u = P/ρ where P is pressure and ρ is density
stellar center
outer layers
A
B
no difference
New results: Inversions for a star with a convective core
u = P/ρ
stellar center
outer layers
no difference
Bellinger et al. (2019b), The Astrophysical Journal 885 (2), 143
New results: Testing the constancy of the physical constants
G’ = 0
G’ < 0
G’ > 0
G’ = 0
G’ < 0
G’ > 0
Bellinger & Christensen-Dalsgaard (2019), ApJ Letters accepted
New results: Testing the constancy of the physical constants
|G/G₀| < 0.43
|G’/G| ⪅ 5 · 10-12 yr-1
String theory
General relativity
Bellinger & Christensen-Dalsgaard (2019), ApJ Letters accepted
A seismic scaling relation for stellar age (and other quantities)
Bellinger (2019a) MNRAS 486 (4); Bellinger (2019b) MNRAS Letters accepted
New results: Fundamental parameters of more stars!
Bellinger et al. (2019c), MNRAS accepted
visiting fellow //
school of physics
university of new south wales
Ages, masses and radii —
Earl Patrick Bellinger
postdoctoral research fellow //
stellar astrophysics centre
department of physics and astronomy
aarhus university
Measurements of stellar interiors —
What Can Asteroseismology
Do for Astrophysics?
@ Stars in Melbourne
fin.
Connecting theory to observations
Bellinger et al. (2019a), Astronomy & Astrophysics, 622, A130.
Testing the seismic scaling relations
Bellinger, E. P. (2019), Monthly Notices of the Royal Astronomical Society (accepted).