Search Results - "Stokholm, Amalie"
-
1
TESS Asteroseismology of β Hydri: A Subgiant with a Born-again Dynamo
Published in The Astrophysical journal (01-10-2024)“…Abstract The solar-type subgiant β Hyi has long been studied as an old analog of the Sun. Although the rotation period has never been measured directly, it was…”
Get full text
Journal Article -
2
A unified exploration of the chronology of the Galaxy
Published in Monthly notices of the Royal Astronomical Society (12-07-2023)“…ABSTRACT The Milky Way has distinct structural stellar components linked to its formation and subsequent evolution, but disentangling them is non-trivial. With…”
Get full text
Journal Article -
3
Did Kepler-444 have a long-lived convective core?
Published in Monthly notices of the Royal Astronomical Society (09-08-2023)“…ABSTRACT With the greater power to infer the state of stellar interiors provided by asteroseismology, it has become possible to study the survival of initially…”
Get full text
Journal Article -
4
An observational testbed for cosmological zoom-in simulations: constraining stellar migration in the solar cylinder using asteroseismology
Published in Monthly notices of the Royal Astronomical Society (01-09-2021)“…ABSTRACT Large-scale stellar surveys coupled with recent developments in magneto-hydrodynamical simulations of the formation of Milky Way-mass galaxies provide…”
Get full text
Journal Article -
5
Age-dating Red Giant Stars Associated with Galactic Disk and Halo Substructures
Published in The Astrophysical journal (01-08-2021)“…Abstract The vast majority of Milky Way stellar halo stars were likely accreted from a small number (≲3) of relatively large dwarf galaxy accretion events…”
Get full text
Journal Article -
6
Advanced asteroseismic modelling: breaking the degeneracy between stellar mass and initial helium abundance
Published in Monthly notices of the Royal Astronomical Society (22-07-2022)“…ABSTRACT Current stellar model predictions of adiabatic oscillation frequencies differ significantly from the corresponding observed frequencies due to the…”
Get full text
Journal Article -
7
The subgiant HR 7322 as an asteroseismic benchmark star
Published in Monthly notices of the Royal Astronomical Society (11-10-2019)“…Abstract We present an in-depth analysis of the bright subgiant HR 7322 (KIC 10005473) using Kepler short-cadence photometry, optical interferometry from…”
Get full text
Journal Article -
8
Age determination of galaxy merger remnant stars using asteroseismology
Published in Monthly notices of the Royal Astronomical Society (20-06-2022)“…ABSTRACT The Milky Way was shaped by the mergers with several galaxies in the past. We search for remnant stars that were born in these foreign galaxies and…”
Get full text
Journal Article -
9
A close-in giant planet escapes engulfment by its star
Published in Nature (London) (29-06-2023)“…When main-sequence stars expand into red giants, they are expected to engulf close-in planets 1 – 5 . Until now, the absence of planets with short orbital…”
Get full text
Journal Article -
10
Robust asteroseismic properties of the bright planet host HD 38529
Published in Monthly notices of the Royal Astronomical Society (10-12-2020)“…ABSTRACT The Transiting Exoplanet Survey Satellite (TESS) is recording short-cadence, high duty-cycle timeseries across most of the sky, which presents the…”
Get full text
Journal Article -
11
Asteroseismology and Spectropolarimetry of the Exoplanet Host Star λ Serpentis
Published in The Astronomical journal (01-10-2023)“…Abstract The bright star λ Ser hosts a hot Neptune with a minimum mass of 13.6 M ⊕ and a 15.5 day orbit. It also appears to be a solar analog, with a mean…”
Get full text
Journal Article -
12
A Unified Exploration of the Chronology of the Galaxy
Published 22-06-2023“…The Milky Way has distinct structural stellar components linked to its formation and subsequent evolution, but disentangling them is nontrivial. With the…”
Get full text
Journal Article -
13
Did Kepler-444 have a long-lived convective core?
Published 14-06-2023“…With the greater power to infer the state of stellar interiors provided by asteroseismology, it has become possible to study the survival of initially…”
Get full text
Journal Article -
14
TESS asteroseismology of $\beta$ Hydri: a subgiant with a born-again dynamo
Published 10-08-2024“…Astrophys. J. 974, 31 (2024) The solar-type subgiant $\beta$ Hyi has long been studied as an old analog of the Sun. Although the rotation period has never been…”
Get full text
Journal Article -
15
Red Horizontal Branch stars: an asteroseismic perspective
Published 20-01-2023“…A&A 671, A53 (2023) Robust age estimates of red giant stars are now possible thanks to the precise inference of their mass based on asteroseismic constraints…”
Get full text
Journal Article -
16
Cluster Ages to Reconstruct the Milky Way Assembly (CARMA) I. The final word on the origin of NGC6388 and NGC6441
Published 02-10-2023“…A&A 680, A20 (2023) We present CARMA, the Cluster Ages to Reconstruct the Milky Way Assembly project, that aims at determining precise and accurate age…”
Get full text
Journal Article -
17
The K2 Asteroseismic KEYSTONE sample of Dwarf and Subgiant Solar-Like Oscillators. I: Data and Asteroseismic parameters
Published 29-05-2024“…The KEYSTONE project aims to enhance our understanding of solar-like oscillators by delivering a catalogue of global asteroseismic parameters (${\Delta\nu}$…”
Get full text
Journal Article -
18
Advanced asteroseismic modelling: breaking the degeneracy between stellar mass and initial helium abundance
Published 01-07-2022“…Current stellar model predictions of adiabatic oscillation frequencies differ significantly from the corresponding observed frequencies due to the…”
Get full text
Journal Article -
19
An observational testbed for cosmological zoom-in simulations: constraining stellar migration in the solar cylinder using asteroseismology
Published 22-06-2021“…Large-scale stellar surveys coupled with recent developments in magneto-hydrodynamical simulations of the formation of Milky Way-mass galaxies provide an…”
Get full text
Journal Article -
20
Stellar ages, masses and radii from asteroseismic modeling are robust to systematic errors in spectroscopy
Published 06-02-2020“…A&A 635, C2 (2020) The search for twins of the Sun and Earth relies on accurate characterization of stellar and exoplanetary parameters: i.e., ages, masses,…”
Get full text
Journal Article