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Author Dong, J.Y.; Huang, C.X.; Dawson, R.I.; Foreman-Mackey, D.; Collins, K.A.; Quinn, S.N.; Lissauer, J.J.; Beatty, T.; Quarles, B.; Sha, L.Z.; Shporer, A.; Guo, Z.; Kane, S.R.; Abe, L.; Barkaoui, K.; Benkhaldoun, Z.; Brahm, R.; Bouchy, F.; Carmichael, T.W.; Collins, K.I.; Conti, D.M.; Crouzet, N.; Dransfield, G.; Evans, P.; Gan, T.J.; Ghachoui, M.; Gillon, M.; Grieves, N.; Guillot, T.; Hellier, C.; Jehin, E.; Jensen, E.L.N.; Jordan, A.; Kamler, J.; Kielkopf, J.F.; Mekarnia, D.; Nielsen, L.D.; Pozuelos, F.J.; Radford, D.J.; Schmider, F.X.; Schwarz, R.P.; Stockdale, C.; Tan, T.G.; Timmermans, M.; Triaud, A.H.M.J.; Wang, G.; Ricker, G.; Vanderspek, R.; Latham, D.W.; Seager, S.; Winn, J.N.; Jenkins, J.M.; Mireles, I.; Yahalomi, D.A.; Morgan, E.H.; Vezie, M.; Quintana, E.V.; Rose, M.E.; Smith, J.C.; Shiao, B.
Title Warm Jupiters in TESS Full-frame Images: A Catalog and Observed Eccentricity Distribution for Year 1 Type
Year 2021 Publication Astrophysical Journal Supplement Series Abbreviated Journal Astrophys. J. Suppl. Ser.
Volume 255 Issue 1 Pages 6
Keywords TRANSITING BROWN DWARFS; IN-SITU FORMATION; METAL-RICH STARS; HOT JUPITERS; GIANT PLANETS; IDENTIFYING EXOPLANETS; ORBITAL MIGRATION; INPUT CATALOG; LIGHT CURVES; SUPER-EARTHS
Abstract Warm Jupiters-defined here as planets larger than 6 Earth radii with orbital periods of 8-200 days-are a key missing piece in our understanding of how planetary systems form and evolve. It is currently debated whether Warm Jupiters form in situ, undergo disk or high-eccentricity tidal migration, or have a mixture of origin channels. These different classes of origin channels lead to different expectations for Warm Jupiters' properties, which are currently difficult to evaluate due to the small sample size. We take advantage of the Transiting Exoplanet Survey Satellite (TESS) survey and systematically search for Warm Jupiter candidates around main-sequence host stars brighter than the TESS-band magnitude of 12 in the full-frame images in Year 1 of the TESS Prime Mission data. We introduce a catalog of 55 Warm Jupiter candidates, including 19 candidates that were not originally released as TESS objects of interest by the TESS team. We fit their TESS light curves, characterize their eccentricities and transit-timing variations, and prioritize a list for ground-based follow-up and TESS Extended Mission observations. Using hierarchical Bayesian modeling, we find the preliminary eccentricity distributions of our Warm-Jupiter-candidate catalog using a beta distribution, a Rayleigh distribution, and a two-component Gaussian distribution as the functional forms of the eccentricity distribution. Additional follow-up observations will be required to clean the sample of false positives for a full statistical study, derive the orbital solutions to break the eccentricity degeneracy, and provide mass measurements.
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0067-0049 ISBN Medium
Area Expedition Conference
Notes WOS:000667476100001 Approved
Call Number UAI @ alexi.delcanto @ Serial 1439
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Author Leleu, A.; Alibert, Y.; Hara, N.C.; Hooton, M. J.; Wilson, T.G.; Robutel, P.; Delisle, J.B.; Laskar, J .; Hoyer, S.; Lovis, C.; Bryant, E.M.; Ducrot, E.; Cabrera, J.; Delrez, L.; Acton, J.S.; Adibekyan, V.; Allart, R.; Prieto, C.A.; Alonso, R.; Alves, D.; Anderson, D.R.; Angerhausen, D.; Escude, G.A.; Asquier, J.; Barrado, D.; Barros, S.C.C.; Baumjohann, W.; Bayliss, D.; Beck, M.; Beck, T.; Bekkelien, A.; Benz, W.; Billot, N.; Bonfanti, A.; Bonfils, X.; Bouchy, F.; Bourrier, V.; Boue, G.; Brandeker, A.; Broeg, C.; Buder, M.; Burdanov, A.; Burleigh, M.R.; Barczy, T.; Cameron, A.C.; Chamberlain, S.; Charnoz, S.; Cooke, B.F.; Van Damme, C.C.; Correia, A.C.M.; Cristiani, S.; Damasso, M.; Davies, M.B.; Deleuil, M.; Demangeon, O.D.S.; Demory, B.O.; Di Marcantonio, P.; Di Persio, G.; Dumusque, X.; Ehrenreich, D.; Erikson, A.; Figueira, P.; Fortier, A.; Fossati, L.; Fridlund, M.; Futyan, D.; Gandolfi, D.; Munoz, A.G.; Garcia, L.J.; Gill, S.; Osorio, M.R.Z.; Gillen, E.; Gillon, M.; Goad, M.R.; Hernandez, J.I.G.; Guedel, M.; Haldemann, J.; Henderson, B.; Heng, K.; Hogan, A.E.; Isaak, K.; Jehin, E.; Jenkins, J.S.; Jordan, A.; Kiss, L.; Kristiansen, M.H.; Lam, K.; Lavie, B.; des Etangs, A.L.; Lendl, M.; Lillo-Box, J.; Lo Curto, G.; Magrin, D.; Martins, C.J.A.P.; Maxted, P.F.L.; McCormac, J.; Mehner, A.; Micela, G.; Molaro, P.; Moyano, M.; Murray, C.A.; Nascimbeni, V.; Nunes, N.J.; Olofsson, G.; Osborn, H.P.; Oshagh, M.; Ottensamer, R.; Pagano, I.; Palle, E.; Pedersen, P.P.; Pepe, F.A.; Persson, C.M.; Peter, G.; Piotto, G.; Polenta, G.; Pollacco, D.; Poretti, E.; Pozuelos, F.J.; Queloz, D.; Ragazzoni, R.; Rando, N.; Ratti, F.; Rauer, H.; Raynard, L.; Rebolo, R.; Reimers, C.; Ribas, I.; Santos, N.C.; Scandariato, G.; Schneider, J.; Sebastian, D.; Sestovic, M.; Simon, A.E.; Smith, A.M.S.; Sousa, S.G.; Sozzetti, A.; Steller, M.; Mascareno, A.S.; Szabo, G.M.; Segransan, D.; Thomas, N.; Thompson, S.; Tilbrook, R.H.; Triaud, A.; Turner, O.; Udry, S.; Van Grootel, V.; Venus, H.; Verrecchia, F.; Vines, J.I.; Walton, N.A.; West, R.G.; Wheatley, P.J.; Wolter, D.
Title Six transiting planets and a chain of Laplace resonances in TOI-178 Type
Year 2021 Publication Astronomy & Astrophysics Abbreviated Journal Astron. Astrophys.
Volume 649 Issue Pages A26
Keywords HOT SUPER-EARTHS; TESS INPUT CATALOG; RADIUS DISTRIBUTION; MASS; SYSTEM; MODEL; STARS; MIGRATION; DYNAMICS; TOOL
Abstract Determining the architecture of multi-planetary systems is one of the cornerstones of understanding planet formation and evolution. Resonant systems are especially important as the fragility of their orbital configuration ensures that no significant scattering or collisional event has taken place since the earliest formation phase when the parent protoplanetary disc was still present. In this context, TOI-178 has been the subject of particular attention since the first TESS observations hinted at the possible presence of a near 2:3:3 resonant chain. Here we report the results of observations from CHEOPS, ESPRESSO, NGTS, and SPECULOOS with the aim of deciphering the peculiar orbital architecture of the system. We show that TOI-178 harbours at least six planets in the super-Earth to mini-Neptune regimes, with radii ranging from

1.152(-0.070)(+0.073)</textual-form>

1.152-0.070+0.073 to

2.87(-0.13)(+0.14)</textual-form> 2.87-0.13+0.14 Earth radii and periods of 1.91, 3.24, 6.56, 9.96, 15.23, and 20.71 days. All planets but the innermost one form a 2:4:6:9:12 chain of Laplace resonances, and the planetary densities show important variations from planet to planet, jumping from

1.02(-0.23)(+0.28)</textual-form> 1.02-0.23+0.28 to

0.177(-0.061)(+0.055)</textual-form> 0.177-0.061+0.055 times the Earth's density between planets c and d. Using Bayesian interior structure retrieval models, we show that the amount of gas in the planets does not vary in a monotonous way, contrary to what one would expect from simple formation and evolution models and unlike other known systems in a chain of Laplace resonances. The brightness of TOI-178 (H = 8.76 mag, J = 9.37 mag, V = 11.95 mag) allows for a precise characterisation of its orbital architecture as well as of the physical nature of the six presently known transiting planets it harbours. The peculiar orbital configuration and the diversity in average density among the planets in the system will enable the study of interior planetary structures and atmospheric evolution, providing important clues on the formation of super-Earths and mini-Neptunes.
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0004-6361 ISBN Medium
Area Expedition Conference
Notes WOS:000655036600001 Approved
Call Number UAI @ alexi.delcanto @ Serial 1416
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Author Rodriguez, JE.; Quinn, SN.; Zhou, G.; Vanderburg, A.; Nielsen, LD.; Wittenmyer, RA.; Brahm, R.; Reed, PA.; Huang, CLX.; Vach, S.; Ciardi, DR.; Oelkers, RJ.; Stassun, KG.; Hellier, C.; Gaudi, BS.; Eastman, JD.; Collins, KA.; Bieryla, A.; Christian, S.; Latham, DW.; Carleo, I.; Wright, DJ.; Matthews, E.; Gonzales, EJ.; Ziegler, C.; Dressing, CD.; Howell, SB.; Tan, TG.; Wittrock, J.; Plavchan, P.; McLeod, KK.; Baker, D.; Wang, GV.; Radford, DJ.; Schwarz, RP.; Esposito, M.; Ricker, GR.; Vanderspek, RK.; Seager, S.; Winn, JN.; Jenkins, JM.; Addison, B.; Anderson, DR.; Barclay, T.; Beatty, TG.; Berlind, P.; Bouchy, F.; Bowen, M.; Bowler, BP.; Brasseur, CE.; Briceno, C.; Caldwell, DA.; Calkins, ML.; Cartwright, S.; Chaturvedi, P.; Chaverot, G.; Chimaladinne, S.; Christiansen, JL.; Collins, KI.; Crossfield, IJM.; Eastridge, K.; Espinoza, N.; Esquerdo, GA.; Feliz, DL.; Fenske, T.; Fong, W.; Gan, TJ.; Giacalone, S.; Gill, H.; Gordon, L.; Granados, A.; Grieves, N.; Guenther, EW.; Guerrero, N.; Henning, T.; Henze, CE.; Hesse, K.; Hobson, MJ.; Horner, J.; James, DJ.; Jensen, ELN.; Jimenez, M.; Jordan, A.; Kane, SR.; Kielkopf, J.; Kim, K.; Kuhn, RB.; Latouf, N.; Law, NM.; Levine, AM.; Lund, MB.; Mann, AW.; Mao, SD.; Matson, RA.; Mengel, MW.; Mink, J.; Newman, P.; O'Dwyer, T.; Okumura, J.; Palle, E.; Pepper, J.; Quintana, EV.; Sarkis, P.; Savel, AB.; Schlieder, JE.; Schnaible, C.; Shporer, A.; Sefako, R.; Seidel, JV.; Siverd, RJ.; Skinner, B.; Stalport, M.; Stevens, DJ.; Stibbards, C.; Tinney, CG.; West, RG.; Yahalomi, DA.; Zhang, H.
Title TESS Delivers Five New Hot Giant Planets Orbiting Bright Stars from the Full-frame Images Type
Year 2021 Publication Astronomical Journal Abbreviated Journal Astron. J.
Volume 161 Issue 4 Pages 194
Keywords Exoplanet astronomy; Exoplanet migration; Exoplanet detection methods; Exoplanets; Transits; Radial velocity; Direct imaging
Abstract We present the discovery and characterization of five hot and warm Jupiters-TOI-628 b (TIC 281408474; HD 288842), TOI-640 b (TIC 147977348), TOI-1333 b (TIC 395171208, BD+47 3521A), TOI-1478 b (TIC 409794137), and TOI-1601 b ( TIC 139375960)-based on data from NASA's Transiting Exoplanet Survey Satellite (TESS). The five planets were identified from the full-frame images and were confirmed through a series of photometric and spectroscopic follow-up observations by the TESS Follow-up Observing Program Working Group. The planets are all Jovian size (R-P = 1.01-1.77 R-J) and have masses that range from 0.85 to 6.33 M-J. The host stars of these systems have F and G spectral types (5595 <= T-eff <= 6460 K) and are all relatively bright (9.5 < V < 10.8, 8.2 < K < 9.3), making them well suited for future detailed characterization efforts. Three of the systems in our sample (TOI-640 b, TOI-1333 b, and TOI-1601 b) orbit subgiant host stars (log g < 4.1). TOI-640 b is one of only three known hot Jupiters to have a highly inflated radius (R-P > 1.7 R-J, possibly a result of its host star's evolution) and resides on an orbit with a period longer than 5 days. TOI-628 b is the most massive, hot Jupiter discovered to date by TESS with a measured mass of 6.31(-0.30)(+) (0.28) M-J and a statistically significant, nonzero orbital eccentricity of e = 0.074(-0.022)(+) (0.021). This planet would not have had enough time to circularize through tidal forces from our analysis, suggesting that it might be remnant eccentricity from its migration. The longest-period planet in this sample, TOI-1478 b (P = 10.18 days), is a warm Jupiter in a circular orbit around a near-solar analog. NASA's TESS mission is continuing to increase the sample of well-characterized hot and warm Jupiters, complementing its primary mission goals.
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0004-6256 ISBN Medium
Area Expedition Conference
Notes WOS:000632893600001 Approved
Call Number UAI @ alexi.delcanto @ Serial 1358
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Author Urrestarazu, P.; Villavicencio, G.; Opazo, M.; Arbildua, J.; Boreiko, C.; Delbeke, K.; Rodriguez, P.H.
Title Migration protocol to estimate metal exposure from mouthing copper and tin alloy objects Type
Year 2014 Publication Environmental Health Abbreviated Journal Environ. Health
Volume 13 Issue Pages 9 pp
Keywords Lead; Mouthing; Migration test; Alloys; Chronic exposure; Saliva
Abstract Background: Low blood lead levels previously thought to pose no health risks may have an adverse impact on the cognitive development of children. This concern has given rise to new regulatory restrictions upon lead metal containing products intended for child use. However few reliable experimental testing methods to estimate exposure levels from these materials are available. Methods: The present work describes a migration test using a mimetic saliva fluid to estimate the chronic exposure of children to metals such as lead while mouthing metallic objects. The surrogate saliva medium was composed of: 150 mM NaCl, 0.16% porcine Mucin and 5 mM buffer MOPS, adjusted to pH 7.2. Alloys samples, in the form of polished metallic disc of known surface area, were subjected to an eight hours test. Results: Two whitemetal alloys Sn/Pb/Sb/Cu and three brass alloys Cu/Zn/Pb were tested using the saliva migration protocol. In the case of the whitemetal alloys, first order release kinetics resulting in the release of 0.03 and 0.51 μg lead/cm(2) after 8 hours of tests were observed, for lead contents of 0.05-0.07% and 5.5%, respectively. Brasses exhibited linear incremental release rates of 0.043, 0.175 and 0.243 μg lead/cm(2)h for lead contents of 0.1-0.2%, 1.7-2.2% and 3.1-3.5%, respectively. The linear regression analysis of lead release rates relative to Pb content in brasses yielded a slope of 0.08 μg lead/cm(2)h% Pb (r(2) = 0.92). Lead release rates were used to estimate the mean daily mouthing exposure of a child to lead, according to age-specific estimates of mouthing time behavior. Calculated daily intakes were used as oral inputs for the IEUBK toxicokinetic model, predicting only marginal changes in blood lead levels (0.2 μg lead/dL or less) for children aged 0.5 to 1 years old exposed to either class of alloy. Conclusions: The results of this study as a whole support the use of migration data of metal ions, rather than total metal content, to estimate health risk from exposure to metals and metal alloys substances in children.
Address [Urrestarazu, Paola; Villavicencio, German; Opazo, Margaret; Arbildua, Jose; Rodriguez, Patricio H.] Univ Adolfo Ibanez, Ctr Ecotoxicol & Chem Met, Santiago 2700, Chile, Email: patricio.rodriguez@uai.cl
Corporate Author Thesis
Publisher Biomed Central Ltd Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1476-069x ISBN Medium
Area Expedition Conference
Notes WOS:000340967800001 Approved
Call Number UAI @ eduardo.moreno @ Serial 402
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