cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.57780/esa-ph0zjhs
title: 2263301

description:   Target RA (J2000):  43.810921  and deg    Target Dec (J2000):  -20.78142  and deg    Gaia GMag:  10.42    Programme ID:  CH_PR149000   Programme Manager:  OSBORN   PI of observing programme:  Benz   Title of programme:  SoM - CHeops And TEss vAlidate Unconfirmed eXoplanets   Abstract:  The vast majority of TESS Objects of Interest remain unconfirmed in part due to a lack of follow-up observations. There are so many such targets that even with strict filters to ensure targets are small planets several unconfirmed TESS candidates are transiting at any one time. CHATEAUX proposes to use time-critical P3 Cheops observations of a filtered  and  ranked set of TOIs which would be able to be scheduled between higher-priority time-critical Cheops observations. We expect these filler observations will produce useful scientific observations of TOI candidates including ephemeris improvements TTV detection improved radius precision and improved false positive probabilities (thanks to both ruling our chromaticity and centroid shifts).    [truncated! Please see actual data for full text]
DOI: 10.57780/esa-pm1e5ul
title: 2038444

description:   Target RA (J2000):  176.872269  and deg    Target Dec (J2000):  -16.09420  and deg    Gaia GMag:  12.913    Programme ID:  CH_PR100002   Programme Manager:  VANGROOTEL   PI of observing programme:  Benz   Title of programme:  ANCILLARY SCIENCE - Planet remnants around evolved stars with CHEOPS   Abstract:  This filler programme is to search for planet remnants transiting subdwarf B (sdB) stars which are evolved stars after the first red giant branch.    [truncated! Please see actual data for full text]
DOI: 10.57780/esa-pmgegyn
title: 2070269

description:   Target RA (J2000):  202.499100  and deg    Target Dec (J2000):  10.37716  and deg    Gaia GMag:  8.21    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-pmkitqs
title: 2237425

description:   Target RA (J2000):  317.551544  and deg    Target Dec (J2000):  10.73888  and deg    Gaia GMag:  8.242    Programme ID:  CH_PR140061   Programme Manager:  LENDL   PI of observing programme:  Benz   Title of programme:  Axis 2 - A Deep search for hot JupIter VAriability (DIVA)   Abstract:  The temporal stability of hot Jupiter atmospheres remains an open question. While there are several tentative detections of changes in the observed planetary occultation depths phase curve shapes or transmission spectra no indisputable evidence exists to date. This program will perform a deep search for variability in the dayside brightness of several hot Jupiters. A detection of clear variability and the measurement of its timescale would open the door to a suite of follow-up studies involving the dynamical behaviour of exoplanet atmospheres.    [truncated! Please see actual data for full text]
DOI: 10.57780/esa-pn2vzbn
title: 2183848

description:   Target RA (J2000):  311.289703  and deg    Target Dec (J2000):  -31.34090  and deg    Gaia GMag:  7.84    Programme ID:  CH_PR130057   Programme Manager:  SZABO   PI of observing programme:  Benz   Title of programme:  Pinning down a young planetary system: CHEOPS observations of AU Mic (CHAUMic)   Abstract:  We propose to carry out an intensive in-transit and out-of-transit CHEOPS observing campaign of the golden target AU Mic aiming at: • constraining the TTV signals of AU Mic b and c and measuring their masses. High-precision radial velocity observations of AU Mic are hampered by the activity of the star as recently shown by Zicher et al. 2022 (MNRAS 512 3060) who measured the masses of planet b and c with a precision of “only” 43 % and 30 % using more than 100 HARPS measurements evenly spread across one year. Conversely CHEOPS have proven to be very effective in measuring planet masses of near-resonant transiting systems such as TOI-1130 b and c for which a precision of ?9 % has been achieved exploiting the TTV method. Our program requires transit observations of planet b and c to be carried out in July August. • studying the evolution time-scale of active regions across the transit cord using AU Mic b as a “scanner”. Unbiased measurements of Rp/R? can be determined only by modeling the transit light curves along with the map of the occulted (and unocculted see below) spots. This requires CHEOPS multiple observations of the transits of AU Mic b at the 4 possible star-planet configurations. By observing spot-crossing events of transits occurring at the same stellar longitudes as in 2020 and 2021’s CHEOPS observations we will also assess whether the distribution of spots has evolved or not. On the other hand transit observations at stellar longitudes that have not yet b [truncated! Please see actual data for full text]
DOI: 10.57780/esa-pnuvutj
title: 2326961

description:   Target RA (J2000):  126.616035  and deg    Target Dec (J2000):  10.08037  and deg    Gaia GMag:  8.819    Programme ID:  CH_PR240015   PI of observing programme:  Grouffal   Title of programme:  Not known   Abstract:  Not known    [truncated! Please see actual data for full text]
DOI: 10.57780/esa-ppn252k
title: 2183907

description:   Target RA (J2000):  311.289703  and deg    Target Dec (J2000):  -31.34090  and deg    Gaia GMag:  7.84    Programme ID:  CH_PR130057   Programme Manager:  SZABO   PI of observing programme:  Benz   Title of programme:  Pinning down a young planetary system: CHEOPS observations of AU Mic (CHAUMic)   Abstract:  We propose to carry out an intensive in-transit and out-of-transit CHEOPS observing campaign of the golden target AU Mic aiming at: • constraining the TTV signals of AU Mic b and c and measuring their masses. High-precision radial velocity observations of AU Mic are hampered by the activity of the star as recently shown by Zicher et al. 2022 (MNRAS 512 3060) who measured the masses of planet b and c with a precision of “only” 43 % and 30 % using more than 100 HARPS measurements evenly spread across one year. Conversely CHEOPS have proven to be very effective in measuring planet masses of near-resonant transiting systems such as TOI-1130 b and c for which a precision of ?9 % has been achieved exploiting the TTV method. Our program requires transit observations of planet b and c to be carried out in July August. • studying the evolution time-scale of active regions across the transit cord using AU Mic b as a “scanner”. Unbiased measurements of Rp/R? can be determined only by modeling the transit light curves along with the map of the occulted (and unocculted see below) spots. This requires CHEOPS multiple observations of the transits of AU Mic b at the 4 possible star-planet configurations. By observing spot-crossing events of transits occurring at the same stellar longitudes as in 2020 and 2021’s CHEOPS observations we will also assess whether the distribution of spots has evolved or not. On the other hand transit observations at stellar longitudes that have not yet b [truncated! Please see actual data for full text]
DOI: 10.57780/esa-ppp2ed9
title: 2298861

description:   Target RA (J2000):  61.941059  and deg    Target Dec (J2000):  -25.20880  and deg    Gaia GMag:  10.23    Programme ID:  CH_PR140075   Programme Manager:  AKINSANMI   PI of observing programme:  Benz   Title of programme:  Axis 1 - Giant planets around EVOlved Stars (EVOS)   Abstract:  Only a handful of planets have been found orbiting evolved stars and even fewer transiting with short-period orbits. Studying giant planets around evolved stars provides useful information on the impact of stellar evolution on planets their atmospheres and the architecture of planetary systems in general. These planets can also contribute to understanding the mechanism for late-stage planet inflation. It is thus necessary to have a good statistical sample of well-characterized giant planets around evolved stars. This program performs follow-up of TESS planet candidates around evolved stars to refine the radii of detected planets and also detect additional planets in order to populate this parameter space and allow better statistical study.    [truncated! Please see actual data for full text]
DOI: 10.57780/esa-pq4jqxx
title: 2189809

description:   Target RA (J2000):  18.048515  and deg    Target Dec (J2000):  -56.92539  and deg    Gaia GMag:  10.955    Programme ID:  CH_PR140074   Programme Manager:  AKINSANMI   PI of observing programme:  Benz   Title of programme:  Axis 3 - Measuring Oblateness and rapid Rotation in Exoplanets (MORE)   Abstract:  Planets can attain non-spherical shapes as a result of the forces acting upon them. Centrifugal forces due to rapid planetary rotation lead to an equatorial bulge referred to as oblateness. Saturn has the largest oblateness within the Solar system owing to its fast rotation and low density. Therefore measuring the oblateness can provide information about the rotation rate of a planet and its interior structure which can in turn provide insight into the dynamical history of the planet. This program will leverage the precision of CHEOPS to probe for large oblateness indicative of super-rapid rotation rate in selected planets around bright stars.    [truncated! Please see actual data for full text]
DOI: 10.57780/esa-prgxmxq
title: 2334780

description:   Target RA (J2000):  165.365326  and deg    Target Dec (J2000):  5.13948  and deg    Gaia GMag:  11.811    Programme ID:  CH_PR240008   PI of observing programme:  Nabbie   Title of programme:  Confirming the Transit Timing Variations of a Neptune-Sized Inner Companion to a Hot Jupiter   Abstract:  The presence of inner companions to Hot Jupiters reveals a rarely-treaded path of Hot Jupiter formation one lacking its customary violence. Though intrinsically rare such systems provide valuable opportunities to directly constrain migrational pathways and understand the multi-faceted origins of Hot Jupiters. TOI-5143 presents one such opportunity hosting a confirmed Hot Jupiter TOI-5143.01 and a statistically-validated inner Neptune TOI-5143.02. TOI-5143.01 is one of the shortest-period Hot Jupiters to host an interior companion second only to WASP-47. Preliminary ground-based photometric observations suggest that TOI-5143.02 exhibits tentative transit timing variations (TTVs). This program will use CHEOPS to confirm the TTV signals of TOI-5143.02. The TTV observations will be used with existing radial velocity data of the system to precisely constrain the mass and dynamical history of the system.    [truncated! Please see actual data for full text]
DOI: 10.57780/esa-pu1m1yy
title: 2055985

description:   Target RA (J2000):  188.346664  and deg    Target Dec (J2000):  6.42167  and deg    Gaia GMag:  13.126    Programme ID:  CH_PR100002   Programme Manager:  VANGROOTEL   PI of observing programme:  Benz   Title of programme:  ANCILLARY SCIENCE - Planet remnants around evolved stars with CHEOPS   Abstract:  This filler programme is to search for planet remnants transiting subdwarf B (sdB) stars which are evolved stars after the first red giant branch.    [truncated! Please see actual data for full text]
DOI: 10.57780/esa-pujtep5
title: 2335795

description:   Target RA (J2000):  164.776077  and deg    Target Dec (J2000):  40.98361  and deg    Gaia GMag:  8.09    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-puu410y
title: 2100882

description:   Target RA (J2000):  276.562744  and deg    Target Dec (J2000):  -14.84840  and deg    Gaia GMag:  10.799    Programme ID:  CH_PR230038   PI of observing programme:  Wu   Title of programme:  Precise Mass Measurement for the Compact Object in LS 5039: The Heaviest Neutron Star or the Lightest Stellar-mass Black Hole?   Abstract:  LS 5039 is a gamma-ray binary containing a compact object within the mass gap (2-5 solar masses). It could potentially be the heaviest neutron star or the lightest stellar-mass black hole. However to precisely constrain its mass high-precision optical photometry at the level of 0.1 mmag (100 ppm) is required. Therefore we propose a CHEOPS monitoring campaign to obtain the needed light curve.    [truncated! Please see actual data for full text]
DOI: 10.57780/esa-puuncam
title: 2311410

description:   Target RA (J2000):  50.131763  and deg    Target Dec (J2000):  42.60708  and deg    Gaia GMag:  10.819    Programme ID:  CH_PR440018   PI of observing programme:  Dattilo   Title of programme:  Confirmation of four planet candidates around an extremely young star   Abstract:  We request 64 orbits of CHEOPS observations to confirm and characterize the planetary system orbiting the star TOI-6109 a young approximately 80Myr-old Sun-like star in the Alpha Persei cluster. It hosts at least 4 transiting planet candidates all about the size of Neptune orbiting within 16 day orbital periods. The planets orbit near mean motion resonances so transit timing variations should reveal their masses. The system's youth and near-resonant configuration present a unique opportunity to test theoretical models of atmospheric mass loss.    [truncated! Please see actual data for full text]
DOI: 10.57780/esa-pv87nlz
title: 2101394

description:   Target RA (J2000):  253.869827  and deg    Target Dec (J2000):  -8.33633  and deg    Gaia GMag:  8.27    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-pvvwmzv
title: 2044460

description:   Target RA (J2000):  174.371246  and deg    Target Dec (J2000):  -28.16202  and deg    Gaia GMag:  12.647    Programme ID:  CH_PR100002   Programme Manager:  VANGROOTEL   PI of observing programme:  Benz   Title of programme:  ANCILLARY SCIENCE - Planet remnants around evolved stars with CHEOPS   Abstract:  This filler programme is to search for planet remnants transiting subdwarf B (sdB) stars which are evolved stars after the first red giant branch.    [truncated! Please see actual data for full text]
DOI: 10.57780/esa-pzxsyxa
title: 2040696

description:   Target RA (J2000):  126.616035  and deg    Target Dec (J2000):  10.08037  and deg    Gaia GMag:  8.81    Programme ID:  CH_PR100025   Programme Manager:  NASCIMBENI   PI of observing programme:  Benz   Title of programme:  MR.IMPROVE - Mass-Radius relation in multiple systems   Abstract:  Scientific objective: obtaining MR relation in systems of low-mass planets (in particular with gas-poor planets)    [truncated! Please see actual data for full text]
DOI: 10.57780/esa-q0o67hv
title: 2298592

description:   Target RA (J2000):  73.124420  and deg    Target Dec (J2000):  -36.25717  and deg    Gaia GMag:  11.76    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-q0p8wzr
title: 2041081

description:   Target RA (J2000):  169.000854  and deg    Target Dec (J2000):  -57.54766  and deg    Gaia GMag:  10.48    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-q0twsvy
title: 2165143

description:   Target RA (J2000):  348.949036  and deg    Target Dec (J2000):  -10.84969  and deg    Gaia GMag:  12    Programme ID:  CH_PR140080   Programme Manager:  LELEU   PI of observing programme:  Benz   Title of programme:  Axis 1 - Architecture of Resonant Chains (ARC)   Abstract:  Resonant chains are gold mines for fueling our understanding of planetary systems. The minute details of their architectures encode the history of their formation: the order of the capture of the planets in the chain (Delisle 2017) the local shape of the proto-planetary disc and its dispersal (e.g.  Nesvorny et al 2022) and the long-term evolution of the system through tidal dissipation (e.g. Papaloizou et al 2018). The high multiplicity of these systems also makes them especially valuable to constrain our models of the formation of planetary systems (See Emsenhuber et al 2022 and other papers of the NGPPS series) since all the planets have to form in the same environment and the relative fragility of the configuration ensures that no violent evolution (e.g. close encounters/impacts) occurred after the dissipation of the proto-planetary disc (Leleu et al 2021). In addition the transit timing variations induced by the compactness of the systems allow for precise mass determination down to a few per cent in the case of Trappist-1 (Agol et al 2021). This allows an in-depth characterization of moderately insolated rocky planets and mini-Neptune with a precision which is rarely reachable through radial velocities enabling studies of their interiors and atmospheres. The brightness of the current targets of the program (Gaia band mag 11 for TOI178 12 for K2-138 8.4 for TOI1835) allows to combine RVs and photometric measurements. The two methods have a great synergy as TTVs allow for in-depth characterization of  [truncated! Please see actual data for full text]
DOI: 10.57780/esa-q2iyzpp
title: 2043699

description:   Target RA (J2000):  179.939957  and deg    Target Dec (J2000):  -5.72172  and deg    Gaia GMag:  11.61    Programme ID:  CH_PR110048   Programme Manager:  OSBORN   PI of observing programme:  Benz   Title of programme:  EXPLORE - Duos: Recovering long period duo-transiting planets with CHEOPS   Abstract:  The high-precision yet short-duration of TESS sectors means that many long-period planet candidates are found at high-SNR but on unknown periods. One specific type of such candidates are Duotransits - candidates with two transits separated by a large gap (as is the case for around 400 TESS candidates observing in the primary and extended missions). Here Cheops is perfectly placed to recover the periods of such long period planets by observing potential period aliases. In this program we propose to use this method to recover the periods of super-Earths  and  Neptunes around bright stars with Cheops.    [truncated! Please see actual data for full text]