Exoplanet Occurrence Rate with Age for FGK Stars in Kepler
We measure the exoplanet occurrence rate as a function of isochrone and gyrochronology ages using confirmed and candidate planets identified in Q1–17 DR25 Kepler data. We employ Kepler's pipeline detection efficiency to correct for the expected number of planets in each age bin. We examine the...
Saved in:
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2025-01-01
|
| Series: | The Astronomical Journal |
| Subjects: | |
| Online Access: | https://doi.org/10.3847/1538-3881/ada8a1 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832542879375949824 |
|---|---|
| author | Maryum Sayeed Ruth Angus Travis A. Berger Yuxi(Lucy) Lu Jessie L. Christiansen Daniel Foreman-Mackey Melissa K. Ness |
| author_facet | Maryum Sayeed Ruth Angus Travis A. Berger Yuxi(Lucy) Lu Jessie L. Christiansen Daniel Foreman-Mackey Melissa K. Ness |
| author_sort | Maryum Sayeed |
| collection | DOAJ |
| description | We measure the exoplanet occurrence rate as a function of isochrone and gyrochronology ages using confirmed and candidate planets identified in Q1–17 DR25 Kepler data. We employ Kepler's pipeline detection efficiency to correct for the expected number of planets in each age bin. We examine the occurrence rates for planets with radii 0.2 ≤ Rp ≤ 20 R _⊕ and orbital periods 0.2 ≤ P ≤ 100 days for FGK stars with ages between 1.5 and 8 Gyr using the inverse detection-efficiency method. We find no significant trend between the occurrence rate and stellar age; a slight decreasing trend (within 1.5 σ –2.5 σ ) only emerges for the low-mass and metal-rich stars that dominate our sample. We isolate the effects of mass and metallicity on the occurrence rate trend with age, but find the results to be inconclusive, due to weak trends and the small sample size. Our results hint that the exoplanet occurrence rate may decrease over time due to dynamical instability from planet–planet scattering or planet ejection, but accurate ages and larger sample sizes are needed to resolve a clear relation between the occurrence rate and age. |
| format | Article |
| id | doaj-art-248c4ebffbbd416b9e2dbe0f1c31ce3f |
| institution | Kabale University |
| issn | 1538-3881 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astronomical Journal |
| spelling | doaj-art-248c4ebffbbd416b9e2dbe0f1c31ce3f2025-02-03T13:46:42ZengIOP PublishingThe Astronomical Journal1538-38812025-01-01169211210.3847/1538-3881/ada8a1Exoplanet Occurrence Rate with Age for FGK Stars in KeplerMaryum Sayeed0https://orcid.org/0000-0001-6180-8482Ruth Angus1https://orcid.org/0000-0003-4540-5661Travis A. Berger2https://orcid.org/0000-0002-2580-3614Yuxi(Lucy) Lu3https://orcid.org/0000-0003-4769-3273Jessie L. Christiansen4https://orcid.org/0000-0002-8035-4778Daniel Foreman-Mackey5https://orcid.org/0000-0002-9328-5652Melissa K. Ness6https://orcid.org/0000-0001-5082-6693Department of Astronomy, Columbia University , 550 West 120th Street, NY 10027, USA ; maryum.sayeed@columbia.eduDepartment of Astronomy, Columbia University , 550 West 120th Street, NY 10027, USA ; maryum.sayeed@columbia.edu; Department of Astrophysics, American Museum of Natural History , 200 Central Park West, Manhattan, NY 10024, USA; Center for Computational Astrophysics, Flatiron Institute , 162 5th Avenue, Manhattan, NY, USASpace Telescope Science Institute , 3700 San Martin Drive, Baltimore, MD 21218, USADepartment of Astrophysics, American Museum of Natural History , 200 Central Park West, Manhattan, NY 10024, USA; Department of Astronomy, The Ohio State University , Columbus, 140 W 18th Avenue, OH 43210, USANASA Exoplanet Science Institute , IPAC, MS 100-22, Caltech, 1200 E. California Boulevard, Pasadena, CA 91125, USACenter for Computational Astrophysics, Flatiron Institute , 162 5th Avenue, Manhattan, NY, USADepartment of Astronomy, Columbia University , 550 West 120th Street, NY 10027, USA ; maryum.sayeed@columbia.edu; Research School of Astronomy & Astrophysics, Australian National University , Canberra, ACT 2611, AustraliaWe measure the exoplanet occurrence rate as a function of isochrone and gyrochronology ages using confirmed and candidate planets identified in Q1–17 DR25 Kepler data. We employ Kepler's pipeline detection efficiency to correct for the expected number of planets in each age bin. We examine the occurrence rates for planets with radii 0.2 ≤ Rp ≤ 20 R _⊕ and orbital periods 0.2 ≤ P ≤ 100 days for FGK stars with ages between 1.5 and 8 Gyr using the inverse detection-efficiency method. We find no significant trend between the occurrence rate and stellar age; a slight decreasing trend (within 1.5 σ –2.5 σ ) only emerges for the low-mass and metal-rich stars that dominate our sample. We isolate the effects of mass and metallicity on the occurrence rate trend with age, but find the results to be inconclusive, due to weak trends and the small sample size. Our results hint that the exoplanet occurrence rate may decrease over time due to dynamical instability from planet–planet scattering or planet ejection, but accurate ages and larger sample sizes are needed to resolve a clear relation between the occurrence rate and age.https://doi.org/10.3847/1538-3881/ada8a1Exoplanet astronomyExoplanet dynamicsExoplanet evolution |
| spellingShingle | Maryum Sayeed Ruth Angus Travis A. Berger Yuxi(Lucy) Lu Jessie L. Christiansen Daniel Foreman-Mackey Melissa K. Ness Exoplanet Occurrence Rate with Age for FGK Stars in Kepler The Astronomical Journal Exoplanet astronomy Exoplanet dynamics Exoplanet evolution |
| title | Exoplanet Occurrence Rate with Age for FGK Stars in Kepler |
| title_full | Exoplanet Occurrence Rate with Age for FGK Stars in Kepler |
| title_fullStr | Exoplanet Occurrence Rate with Age for FGK Stars in Kepler |
| title_full_unstemmed | Exoplanet Occurrence Rate with Age for FGK Stars in Kepler |
| title_short | Exoplanet Occurrence Rate with Age for FGK Stars in Kepler |
| title_sort | exoplanet occurrence rate with age for fgk stars in kepler |
| topic | Exoplanet astronomy Exoplanet dynamics Exoplanet evolution |
| url | https://doi.org/10.3847/1538-3881/ada8a1 |
| work_keys_str_mv | AT maryumsayeed exoplanetoccurrenceratewithageforfgkstarsinkepler AT ruthangus exoplanetoccurrenceratewithageforfgkstarsinkepler AT travisaberger exoplanetoccurrenceratewithageforfgkstarsinkepler AT yuxilucylu exoplanetoccurrenceratewithageforfgkstarsinkepler AT jessielchristiansen exoplanetoccurrenceratewithageforfgkstarsinkepler AT danielforemanmackey exoplanetoccurrenceratewithageforfgkstarsinkepler AT melissakness exoplanetoccurrenceratewithageforfgkstarsinkepler |