A dataset provided by the European Space Agency

Obs ID 1901592
Target/Line-of-sight HIP113103
Gaia DR2 ID Gaia DR2 6541360574788758016
URL https://cheops.unige.ch/archive_browser/?visit-id=1901592
DOI https://doi.org/10.57780/esa-vsjgq87
Author European Space Agency
Description of observation
  • Target RA (J2000): 343.572388 °
  • Target Dec (J2000): -43.01022 °
  • Gaia GMag: 9.61

  • Programme ID: CH_PR230010
  • PI of observing programme: Lowson
  • Title of programme: Two Baby sub-Neptunes, One Visit: A Snapshot of Atmosphere Evolution
  • Abstract: Sub-Neptunes are the most abundant population of planets around Sun-like stars, yet we have no analogue within our own Solar System. Therefore, atmosphere analysis of adolescent sub-Neptunes is the best way to investigate the mechanisms that shape this dominant population. We will use CHEOPS to confirm and characterise two sub-Neptunes (HIP113103.01 and HIP113103.02) around a bright ~500 Myr old star, HIP113103. With an irradiation 50 times greater than Earth, we hypothesise HIP113103.01 is undergoing primordial atmospheric evaporation while HIP113103.02 maintains its primordial atmosphere. Such a situation makes this system a perfect case study to determine to what extent are these atmospheres a product of evaporation or outgassing with the next generation of space and ground-based telescopes. We propose 10 orbits to observe both planets in a single visit, for CHEOPS is the only facility capable of detecting the 600 ppm transits of HIP113103.01 with a single transit. These observations will also refine the transit depth of both planet candidates by 40%, providing the necessary precision required for future in-depth atmosphere characterisations.
Temporal Coverage 2022-09-09T20:27:00Z / 2022-09-10T14:10:00Z
Version 3.0
Mission Description CHEOPS (Benz et al., https://doi.org/10.1007/s10686-020-09679-4) is a European Space Agency (ESA) mission in partnership with Switzerland with important contributions to the payload and the ground segment from Austria, Belgium, France, Germany, Hungary, Italy, Portugal, Spain, Sweden and the United Kingdom.

The satellite has a single payload comprising an ultra-high precision photometer covering the 330 - 1100 nm wavelength range in a single photometric band. Observations are made as part of the Guaranteed Time Observing Programme that is formulated by the CHEOPS Science Team, and the Guest Observers Programme through which the Community at large can apply for CHEOPS time.
Creator Contact https://www.cosmos.esa.int/web/cheops/contact
Date Published 2024-04-23T18:43:30Z
Acknowledgements https://www.cosmos.esa.int/web/cheops-guest-observers-programme/publication-guidelines
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2024, Hip113103, 3.0, European Space Agency, https://doi.org/10.57780/esa-vsjgq87