cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.57780/esa-rmom2w9
title: 2053591

description:   Target RA (J2000):  189.839218  and deg    Target Dec (J2000):  20.02734  and deg    Gaia GMag:  8.172    Programme ID:  CH_PR120053   Programme Manager:  LELEU   PI of observing programme:  Benz   Title of programme:  MR.IMPROVE - System Architecture   Abstract:  The resonant/near-resonant state of multi-planetary systems contains clues to their formation and subsequent evolution through disc migration and tidal dissipation. Physical quantities such as densities eccentricities distance to 2-body or 3-body resonances and the amplitude of libration of resonant angles subtly encode the systems' history. These quantities can be estimated by observing transit timing variations in the system. The program aims to use CHEOPS high-precision photometry and versatility coupled with orbital dynamics modelling to : 1-  constrain the resonant state of systems  2- Look for (density-period) correlations inside known multi-planetary systems and (help to) determine their mass-radius-period relationship and 3 - Look for additional planets in these compact multi-planetary systems to improve our knowledge of their architecture.    [truncated! Please see actual data for full text]
DOI: 10.57780/esa-rq0j54y
title: 2260432

description:   Target RA (J2000):  73.795753  and deg    Target Dec (J2000):  30.36649  and deg    Gaia GMag:  11.72    Programme ID:  CH_PR140069   Programme Manager:  SZABO   PI of observing programme:  Benz   Title of programme:  Axis 3 - Photometric Transients in Dusty Debris Disks   Abstract:  We observe systems with warm dust disks regardless to the orientation of the disk but with positive detections of photometric transients from the disk with TESS. The targets will be selected from the results of Ansdell et al 2020 and Gaidos et al. 2022 in respect to the expected efficiency of CHEOPS observations and if possible simultaneously to TESS observations. The simultaneous CHEOPS+TESS multiband data will give us the first two-band space photometry of scattering dust in distant solar systems.    [truncated! Please see actual data for full text]
DOI: 10.57780/esa-rrugmqp
title: 2232148

description:   Target RA (J2000):  46.060631  and deg    Target Dec (J2000):  43.55794  and deg    Gaia GMag:  9.71    Programme ID:  CH_PR140079   Programme Manager:  OSBORN   PI of observing programme:  Benz   Title of programme:  Axis 1 - DETECTIVE CHEOPS: Confirming small transiting planets on long orbital periods   Abstract:  Transiting planets orbiting bright stars are key for the characterisation of exoplanet atmospheres and internal structures. However the vast majority of such planets have short (P<20d) orbital periods. This is because long-period transiting planets do not produce consecutive transits in photometric survey data. However these planets are some of the most interesting as unlike their interior companions they are less affected by the gravitational and electromagnetic effects of their host stars. This programme will use CHEOPS to efficiently detect characterisable small transiting planets on long orbital periods. We will do this by leveraging as much external information as possible to constrain orbital periods - from nonconsecutive transits (i.e. mono- duo- or trio-transit candidates) in photometric survey data such as K2 or TESS and from radial velocities where available. Such techniques have been successful in the CHEOPS nominal mission with for example the photometrically-constrained TOI-2076 c  and  d (Osborn et al 2022) or the monotransit+RV case of TOI-561 d  and  e (Lacedelli et al 2021  and  2022). These planets once found by CHEOPS may also form interesting science targets for other parts of the GTO extended mission science case such as studying the architectural diversity of exoplanetary systems and even searches for exomoon  and  rings.    [truncated! Please see actual data for full text]
DOI: 10.57780/esa-rwn43lr
title: 2041223

description:   Target RA (J2000):  157.935440  and deg    Target Dec (J2000):  0.93757  and deg    Gaia GMag:  11.349    Programme ID:  CH_PR230008   PI of observing programme:  Jiang   Title of programme:  : Bridging CHEOPS and Twinkle: forming long TTV baselines for the multi-planet system K2-266   Abstract:  The measuring of transit timing variations (TTVs) allows one to explore the dynamical interactions of planets within a system shedding light on the properties of these bodies. Here propose to observe the transits of two planets in the K2-266 system K2-266d and K2-266e in order to more robustly constrain the previously reported TTVs. These data will allow us to obtain much more precise mass and orbital parameters of this unique system. TESS has observed the system already adding to the time baseline relative to the original K2 observations but the TESS data are not accurate enough to distinguish between competing models. However as discussed in the scientific justification of this proposal the CHEOPS data proposed here is able to distinguish between different models with small differences in the system parameters. The ability to precisely distinguish between competing models means the CHEOPS data will provide a high precision measurement and bring a large impact into the study of this astronomically important planet system. Furthermore as members of the Twinkle Space Mission’s exoplanet TTV Working Group we aim to observe this system with Twinkle in the future. While the data proposed for here is valuable in its own right combining data from both these small low-Earth orbit satellites over a long baseline will yield better results than using either one alone.    [truncated! Please see actual data for full text]
DOI: 10.57780/esa-rzfy5ir
title: 2286392

description:   Target RA (J2000):  93.558548  and deg    Target Dec (J2000):  53.13593  and deg    Gaia GMag:  10.22    Programme ID:  CH_PR140084   Programme Manager:  ULMER-MOLL   PI of observing programme:  Benz   Title of programme:  Axis 1 - CompoSubNeptu   Abstract:  Sub-Neptunes are the most common type of known planets in the galactic neighborhood. In spite of that their interior composition and therefore their origin has to date not been constrained observationally. The reason is the degeneracy in possible compositions that can explain their observed properties. Two end member compositions are theoretically suggested: dry rocky cores + about 1% of H/He or ocean planets containing about 50% water in mass. The former is suggested by evolutionary evaporation models the later by formation models. These compositions correspond to fundamentally different in situ formation versus orbital migration pathways. If observationally it should turn out that close-in sub-Neptunian planets are indeed water worlds this could be seen as one of the largest successes of planet formation theory. The opposite case would mean that one or several elements of our current understanding of the origin of planets is fundamentally flawed. It is therefore of paramount importance to answer the fundamental question “What are sub-Neptunes made of?”. With this program we propose a three-faceted approach to answer this question: 1) is there a grouping in density? 2) Preparing for the JWST opportunity. 3) Is the ice mass fraction correlated with the stellar composition? We propose to use CHEOPS for the precise radius determination of a carefully chosen sample of TESS planet candidate whose radii make them susceptible to be either ocean worlds or rocky cores with H/He envelopes.    [truncated! Please see actual data for full text]
DOI: 10.57780/esa-rzu1v3q
title: 2056737

description:   Target RA (J2000):  206.847687  and deg    Target Dec (J2000):  -6.13686  and deg    Gaia GMag:  9.901    Programme ID:  CH_PR230026   PI of observing programme:  Edwards   Title of programme:  Ephemeris Refinement of Key Targets for the ESA-Ariel Mission   Abstract:  The ESA-Ariel mission seeks to observe the atmospheres of around 1000 exoplanets. To maximise the science yield of the mission the sample of planets studied must be as diverse as possible probing all areas of the exoplanet population. To allow for this the catalogue of planets from which the Ariel sample is chosen must be significantly larger. For each of these potential targets a likely requirement is that number of key parameters are well characterised. One piece of knowledge that is undeniably obligatory is the predicted transit time of the planet in question. Keeping track of such a large number of worlds necessitates a well-structured follow-up programme and so the Ariel consortium has launched ExoClock which allows professional and amateur astronomers from around the world to support this effort. Nevertheless there are some planets which simply cannot be studied from the ground and for which TESS data is also of insufficient quality so another solution is required. Here we propose to use the excellent photometric performance of CHEOPS to study 9 key worlds for the Ariel mission. By observing these targets CHEOPS will be ensuring they are available for future atmospheric characterisation and thereby providing key support for another ESA mission.    [truncated! Please see actual data for full text]
DOI: 10.57780/esa-s0ukliy
title: 2356066

description:   Target RA (J2000):  107.866432  and deg    Target Dec (J2000):  48.33039  and deg    Gaia GMag:  11.39    Programme ID:  CH_PR140065   Programme Manager:  WILSON   PI of observing programme:  Benz   Title of programme:  Axis 1 -  Solidifying Planet-Star Composition Links by Studying Why the Internal Structures of Planets Across the Galaxy Vary (YGAL)   Abstract:  Terrestrial planets form through the accretion of building blocks from dust grains to proto-planets. Heavier components sink and form metallic cores whilst pebbles from beyond snow lines deliver volatiles influencing atmospheres or water on Earth-like planets. Understanding the composition of planetary ingredients is vital. Planetary refractory elemental abundances mirror stellar values  the Earth is a devolatised piece of the Sun. If this is universal we would expect a diversity in internal structures and atmospheres of planets orbiting metal-diverse stars. This is currently not well investigated however in recent years tantalising evidence has emerged for metallicity-driven trends in the physical characteristics of super-Earth and sub-Neptune exoplanets. These first pieces of evidence might be pointing towards chemically-diverse formation scenarios impacting the internal structures of planets however this is currently unclear as there are very few well-characterised small planets around metal-poor stars. Therefore this program will refine the radii of a handful of key planets around Galactic thick-disk metal-poor host stars to an unprecedented level in order to solve the current mysteries that we are just starting to unravel.    [truncated! Please see actual data for full text]
DOI: 10.57780/esa-s1pyhxg
title: 2200780

description:   Target RA (J2000):  330.542816  and deg    Target Dec (J2000):  1.40023  and deg    Gaia GMag:  8.4    Programme ID:  CH_PR100018   Programme Manager:  PAGANO   PI of observing programme:  Benz   Title of programme:  ANCILLARY SCIENCE - Low level variability on short time scales of Mdwarfs   Abstract:  This is a filler program aimimg to characterize the stellar noise (mainly microflares  dips and short lasting oscillations) at short time scales  for Mdwarfs of different level of variability and other active late type stars hosting exoplanets. Being interested to micro-variability on time scales from few seconds to a hours even one CHEOPS orbit can get useful data. The measured parameters - mean variance pooled variaance flares/microflares occurence rate dips occurence rate power spectrum -  will be related  to stellar properties (Teff H-alpha Ca II H and K X-ray and UV fluxes).  Selected targets spans subclasess of late type stars with different level of activity. They have been selected among those  with already know stellar properties (typicall surveyed for exoplanet detection)  and include all  dM / late K and TTau  with  planets.    [truncated! Please see actual data for full text]
DOI: 10.57780/esa-s1q8f6m
title: 2048943

description:   Target RA (J2000):  189.839218  and deg    Target Dec (J2000):  20.02734  and deg    Gaia GMag:  8.172    Programme ID:  CH_PR120053   Programme Manager:  LELEU   PI of observing programme:  Benz   Title of programme:  MR.IMPROVE - System Architecture   Abstract:  The resonant/near-resonant state of multi-planetary systems contains clues to their formation and subsequent evolution through disc migration and tidal dissipation. Physical quantities such as densities eccentricities distance to 2-body or 3-body resonances and the amplitude of libration of resonant angles subtly encode the systems' history. These quantities can be estimated by observing transit timing variations in the system. The program aims to use CHEOPS high-precision photometry and versatility coupled with orbital dynamics modelling to : 1-  constrain the resonant state of systems  2- Look for (density-period) correlations inside known multi-planetary systems and (help to) determine their mass-radius-period relationship and 3 - Look for additional planets in these compact multi-planetary systems to improve our knowledge of their architecture.    [truncated! Please see actual data for full text]
DOI: 10.57780/esa-s3nm3rc
title: 2046310

description:   Target RA (J2000):  189.839218  and deg    Target Dec (J2000):  20.02734  and deg    Gaia GMag:  8.172    Programme ID:  CH_PR120053   Programme Manager:  LELEU   PI of observing programme:  Benz   Title of programme:  MR.IMPROVE - System Architecture   Abstract:  The resonant/near-resonant state of multi-planetary systems contains clues to their formation and subsequent evolution through disc migration and tidal dissipation. Physical quantities such as densities eccentricities distance to 2-body or 3-body resonances and the amplitude of libration of resonant angles subtly encode the systems' history. These quantities can be estimated by observing transit timing variations in the system. The program aims to use CHEOPS high-precision photometry and versatility coupled with orbital dynamics modelling to : 1-  constrain the resonant state of systems  2- Look for (density-period) correlations inside known multi-planetary systems and (help to) determine their mass-radius-period relationship and 3 - Look for additional planets in these compact multi-planetary systems to improve our knowledge of their architecture.    [truncated! Please see actual data for full text]
DOI: 10.57780/esa-s467z28
title: 2159816

description:   Target RA (J2000):  284.500580  and deg    Target Dec (J2000):  5.90812  and deg    Gaia GMag:  8.46    Programme ID:  CH_PR100018   Programme Manager:  PAGANO   PI of observing programme:  Benz   Title of programme:  ANCILLARY SCIENCE - Low level variability on short time scales of Mdwarfs   Abstract:  This is a filler program aimimg to characterize the stellar noise (mainly microflares  dips and short lasting oscillations) at short time scales  for Mdwarfs of different level of variability and other active late type stars hosting exoplanets. Being interested to micro-variability on time scales from few seconds to a hours even one CHEOPS orbit can get useful data. The measured parameters - mean variance pooled variaance flares/microflares occurence rate dips occurence rate power spectrum -  will be related  to stellar properties (Teff H-alpha Ca II H and K X-ray and UV fluxes).  Selected targets spans subclasess of late type stars with different level of activity. They have been selected among those  with already know stellar properties (typicall surveyed for exoplanet detection)  and include all  dM / late K and TTau  with  planets.    [truncated! Please see actual data for full text]
DOI: 10.57780/esa-s4a9i1e
title: 2330489

description:   Target RA (J2000):  142.179245  and deg    Target Dec (J2000):  -14.68642  and deg    Gaia GMag:  9.62    Programme ID:  CH_PR140079   Programme Manager:  OSBORN   PI of observing programme:  Benz   Title of programme:  Axis 1 - DETECTIVE CHEOPS: Confirming small transiting planets on long orbital periods   Abstract:  Transiting planets orbiting bright stars are key for the characterisation of exoplanet atmospheres and internal structures. However the vast majority of such planets have short (P<20d) orbital periods. This is because long-period transiting planets do not produce consecutive transits in photometric survey data. However these planets are some of the most interesting as unlike their interior companions they are less affected by the gravitational and electromagnetic effects of their host stars. This programme will use CHEOPS to efficiently detect characterisable small transiting planets on long orbital periods. We will do this by leveraging as much external information as possible to constrain orbital periods - from nonconsecutive transits (i.e. mono- duo- or trio-transit candidates) in photometric survey data such as K2 or TESS and from radial velocities where available. Such techniques have been successful in the CHEOPS nominal mission with for example the photometrically-constrained TOI-2076 c  and  d (Osborn et al 2022) or the monotransit+RV case of TOI-561 d  and  e (Lacedelli et al 2021  and  2022). These planets once found by CHEOPS may also form interesting science targets for other parts of the GTO extended mission science case such as studying the architectural diversity of exoplanetary systems and even searches for exomoon  and  rings.    [truncated! Please see actual data for full text]
DOI: 10.57780/esa-s7oolsq
title: 2182821

description:   Target RA (J2000):  262.166443  and deg    Target Dec (J2000):  -46.89519  and deg    Gaia GMag:  8.33    Programme ID:  CH_PR100018   Programme Manager:  PAGANO   PI of observing programme:  Benz   Title of programme:  ANCILLARY SCIENCE - Low level variability on short time scales of Mdwarfs   Abstract:  This is a filler program aimimg to characterize the stellar noise (mainly microflares  dips and short lasting oscillations) at short time scales  for Mdwarfs of different level of variability and other active late type stars hosting exoplanets. Being interested to micro-variability on time scales from few seconds to a hours even one CHEOPS orbit can get useful data. The measured parameters - mean variance pooled variaance flares/microflares occurence rate dips occurence rate power spectrum -  will be related  to stellar properties (Teff H-alpha Ca II H and K X-ray and UV fluxes).  Selected targets spans subclasess of late type stars with different level of activity. They have been selected among those  with already know stellar properties (typicall surveyed for exoplanet detection)  and include all  dM / late K and TTau  with  planets.    [truncated! Please see actual data for full text]
DOI: 10.57780/esa-s9biiku
title: 2084442

description:   Target RA (J2000):  274.268921  and deg    Target Dec (J2000):  21.90944  and deg    Gaia GMag:  8.34    Programme ID:  CH_PR140084   Programme Manager:  ULMER-MOLL   PI of observing programme:  Benz   Title of programme:  Axis 1 - CompoSubNeptu   Abstract:  Sub-Neptunes are the most common type of known planets in the galactic neighborhood. In spite of that their interior composition and therefore their origin has to date not been constrained observationally. The reason is the degeneracy in possible compositions that can explain their observed properties. Two end member compositions are theoretically suggested: dry rocky cores + about 1% of H/He or ocean planets containing about 50% water in mass. The former is suggested by evolutionary evaporation models the later by formation models. These compositions correspond to fundamentally different in situ formation versus orbital migration pathways. If observationally it should turn out that close-in sub-Neptunian planets are indeed water worlds this could be seen as one of the largest successes of planet formation theory. The opposite case would mean that one or several elements of our current understanding of the origin of planets is fundamentally flawed. It is therefore of paramount importance to answer the fundamental question “What are sub-Neptunes made of?”. With this program we propose a three-faceted approach to answer this question: 1) is there a grouping in density? 2) Preparing for the JWST opportunity. 3) Is the ice mass fraction correlated with the stellar composition? We propose to use CHEOPS for the precise radius determination of a carefully chosen sample of TESS planet candidate whose radii make them susceptible to be either ocean worlds or rocky cores with H/He envelopes.    [truncated! Please see actual data for full text]
DOI: 10.57780/esa-s9sr6jc
title: 2038103

description:   Target RA (J2000):  188.764709  and deg    Target Dec (J2000):  -5.29336  and deg    Gaia GMag:  11.06    Programme ID:  CH_PR120052   Programme Manager:  MAXTED   PI of observing programme:  Benz   Title of programme:  ANCILLARY SCIENCE - Short-period EBLM and hot-Jupiter systems   Abstract:  EBLM systems are FGK-type dwarf stars with M-dwarf companions. They are found in large numbers by transit surveys like WASP and many of them now have spectroscopic orbits for the primary star.   This makes it possible to accumulate high-precision transit light curves for these binaries that can be used to study limb-darkening star spots transit-timing variations etc. There are also about 10 hot Jupiter systems that can be added to the sample.    [truncated! Please see actual data for full text]
DOI: 10.57780/esa-sakejmb
title: 2071807

description:   Target RA (J2000):  217.609116  and deg    Target Dec (J2000):  -46.15920  and deg    Gaia GMag:  11.75    Programme ID:  CH_PR140066   Programme Manager:  NASCIMBENI   PI of observing programme:  Benz   Title of programme:  Axis 1 - Uncovering a maverick population: CHEOPS observations of hot Jupiter systems with inner small companions (MAVERICK)   Abstract:  Planetary systems hosting a hot or warm Jupiter (HJ/WJ) plus nearby small companion(s) such as WASP-47 (Nascimbeni et al. 2023) are extremely rare and very valuable to constrain formation and migration models. Only five such systems are known so far. Our goal is to increase the sample size by confirming and characterizing five TESS candidates with such an architecture and improving their orbital/physical parameters including ephemeris radii and (when feasible) planetary masses through TTVs. As demonstrated by our work on WASP-47 RVs and TTVs are very synergistic at decoding these complex systems. A dedicated RV follow-up will be coordinated.    [truncated! Please see actual data for full text]