Saved in:
| Main Authors: | , , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | https://arxiv.org/abs/2501.05704 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866912182692741120 |
|---|---|
| author | Ma, Xinyue Wang, Wenqin Zhang, Zixin Yu, Cong Chen, Dichang Xie, Jiwei Liu, Shangfei Zhou, Li Ma, Bo |
| author_facet | Ma, Xinyue Wang, Wenqin Zhang, Zixin Yu, Cong Chen, Dichang Xie, Jiwei Liu, Shangfei Zhou, Li Ma, Bo |
| contents | The ExoEcho project is designed to study the photodynamics of exoplanets by leveraging high-precision transit timing data from ground- and space-based telescopes. Some exoplanets are experiencing orbital decay, and transit timing variation (TTV) is a useful technique to study their orbital period variations. In this study, we have obtained transit middle-time data from the Hubble Space Telescope (HST) observations for 37 short-period exoplanets, most of which are hot Jupiters. To search for potential long- and short-term orbital period variations within the sample, we conduct TTV model fitting using both linear and quadratic ephemeris models. Our analysis identifies two hot Jupiters experiencing strong periodic decays. Given the old age of the host stars of the hot Jupiter population, our findings call for a scenario where HJs are continuously being destructed and created. Our study demonstrates the importance of incorporating high-precision transit timing data to TTV study in the future. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_05704 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Exoplanet Ephemerides Change Observations (ExoEcho). I. Transit Timing Analysis of Thirty-Seven Exoplanets using HST/WFC3 Data Ma, Xinyue Wang, Wenqin Zhang, Zixin Yu, Cong Chen, Dichang Xie, Jiwei Liu, Shangfei Zhou, Li Ma, Bo Earth and Planetary Astrophysics The ExoEcho project is designed to study the photodynamics of exoplanets by leveraging high-precision transit timing data from ground- and space-based telescopes. Some exoplanets are experiencing orbital decay, and transit timing variation (TTV) is a useful technique to study their orbital period variations. In this study, we have obtained transit middle-time data from the Hubble Space Telescope (HST) observations for 37 short-period exoplanets, most of which are hot Jupiters. To search for potential long- and short-term orbital period variations within the sample, we conduct TTV model fitting using both linear and quadratic ephemeris models. Our analysis identifies two hot Jupiters experiencing strong periodic decays. Given the old age of the host stars of the hot Jupiter population, our findings call for a scenario where HJs are continuously being destructed and created. Our study demonstrates the importance of incorporating high-precision transit timing data to TTV study in the future. |
| title | Exoplanet Ephemerides Change Observations (ExoEcho). I. Transit Timing Analysis of Thirty-Seven Exoplanets using HST/WFC3 Data |
| topic | Earth and Planetary Astrophysics |
| url | https://arxiv.org/abs/2501.05704 |