Tidally induced stellar oscillations: converting modelled oscillations excited by hot Jupiters into observables
We calculate the conversion from non–adiabatic, non–radial oscillations tidally induced by a hot Jupiter on a star to observable spectroscopic and photometric signals. Models with both frozen convection and an approximation for a perturbation to the convective flux are discussed. Observables are cal...
| Main Authors: | , |
|---|---|
| Format: | Journal article |
| Language: | English |
| Published: |
Oxford University Press
2020
|
| _version_ | 1826273310070013952 |
|---|---|
| author | Bunting, A Terquem, C |
| author_facet | Bunting, A Terquem, C |
| author_sort | Bunting, A |
| collection | OXFORD |
| description | We calculate the conversion from non–adiabatic, non–radial oscillations tidally induced by a hot Jupiter on a star to
observable spectroscopic and photometric signals. Models with both frozen convection and an approximation for a
perturbation to the convective flux are discussed. Observables are calculated for some real planetary systems to give
specific predictions. Time–dependent line broadening and the radial velocity signal during transit are both investigated
as methods to provide further insight into the nature of the stellar oscillations. The photometric signal is predicted to
be proportional to the inverse square of the orbital period, P
−2
, as in the equilibrium tide approximation. However,
the radial velocity signal is predicted to be proportional to P
−1
, and is therefore much larger at long orbital periods
than the signal corresponding to the equilibrium tide approximation, which is proportional to P
−3
. The prospects for
detecting these oscillations and the implications for the detection and characterisation of planets are discussed. |
| first_indexed | 2024-03-06T22:26:15Z |
| format | Journal article |
| id | oxford-uuid:56bf9a28-5d57-4323-a0bc-f594920d6215 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T22:26:15Z |
| publishDate | 2020 |
| publisher | Oxford University Press |
| record_format | dspace |
| spelling | oxford-uuid:56bf9a28-5d57-4323-a0bc-f594920d62152022-03-26T16:52:26ZTidally induced stellar oscillations: converting modelled oscillations excited by hot Jupiters into observablesJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:56bf9a28-5d57-4323-a0bc-f594920d6215EnglishSymplectic ElementsOxford University Press2020Bunting, ATerquem, CWe calculate the conversion from non–adiabatic, non–radial oscillations tidally induced by a hot Jupiter on a star to observable spectroscopic and photometric signals. Models with both frozen convection and an approximation for a perturbation to the convective flux are discussed. Observables are calculated for some real planetary systems to give specific predictions. Time–dependent line broadening and the radial velocity signal during transit are both investigated as methods to provide further insight into the nature of the stellar oscillations. The photometric signal is predicted to be proportional to the inverse square of the orbital period, P −2 , as in the equilibrium tide approximation. However, the radial velocity signal is predicted to be proportional to P −1 , and is therefore much larger at long orbital periods than the signal corresponding to the equilibrium tide approximation, which is proportional to P −3 . The prospects for detecting these oscillations and the implications for the detection and characterisation of planets are discussed. |
| spellingShingle | Bunting, A Terquem, C Tidally induced stellar oscillations: converting modelled oscillations excited by hot Jupiters into observables |
| title | Tidally induced stellar oscillations: converting modelled oscillations excited by hot Jupiters into observables |
| title_full | Tidally induced stellar oscillations: converting modelled oscillations excited by hot Jupiters into observables |
| title_fullStr | Tidally induced stellar oscillations: converting modelled oscillations excited by hot Jupiters into observables |
| title_full_unstemmed | Tidally induced stellar oscillations: converting modelled oscillations excited by hot Jupiters into observables |
| title_short | Tidally induced stellar oscillations: converting modelled oscillations excited by hot Jupiters into observables |
| title_sort | tidally induced stellar oscillations converting modelled oscillations excited by hot jupiters into observables |
| work_keys_str_mv | AT buntinga tidallyinducedstellaroscillationsconvertingmodelledoscillationsexcitedbyhotjupitersintoobservables AT terquemc tidallyinducedstellaroscillationsconvertingmodelledoscillationsexcitedbyhotjupitersintoobservables |