J/ApJS/258/40 ExoClock project. II. New exoplanet ephemerides (Kokori+, 2022)
ExoClock project.
II. A large-scale integrated study with 180 updated exoplanet ephemerides.
Kokori A., Tsiaras A., Edwards B., Rocchetto M., Tinetti G., Bewersdorff L.,
Jongen Y., Lekkas G., Pantelidou G., Poultourtzidis E., Wunsche A.,
Aggelis C., Agnihotri V.K., Arena C., Bachschmidt M., Bennett D., Benni P.,
Bernacki K., Besson E., Betti L., Biagini A., Brandebourg P., Bretton M.,
Brincat S.M., Calo M., Campos F., Casali R., Ciantini R., Crow M.V.,
Dauchet B., Dawes S., Deldem M., Deligeorgopoulos D., Dymock R., Eenmae T.,
Evans P., Esseiva N., Falco C., Ferratfiat S., Fowler M., Futcher S.R.,
Gaitan J., Grau Horta F., Guerra P., Hurter F., Jones A., Kang W.,
Kiiskinen H., Kim T., Laloum D., Lee R., Lomoz F., Lopresti C., Mallonn M.,
Mannucci M., Marino A., Mario J.-C., Marquette J.-B., Michelet J.,
Miller M., Mollier T., Molina D., Montigiani N., Mortari F., Morvan M.,
Mugnai L.V., Naponiello L., Nastasi A., Neito R., Pace E., Papadeas P.,
Paschalis N., Pereira C., Perroud V., Phillips M., Pintr P., Pioppa J.-B.,
Popowicz A., Raetz M., Regembal F., Rickard K., Roberts M., Rousselot L.,
Rubia X., Savage J., Sedita D., Shave-Wall D., Sioulas N., Skolnik V.,
Smith M., St-Gelais D., Stouraitis D., Strikis I., Thurston G.,
Tomacelli A., Tomatis A., Trevan B., Valeau P., Vignes J.-P., Vora K.,
Vrastak M., Walter F., Wenzel B., Wright D.E., Zibar M.
<Astrophys. J. Suppl. Ser., 258, 40 (2022)>
=2022ApJS..258...40K 2022ApJS..258...40K
ADC_Keywords: Exoplanets; References
Keywords: Transit photometry ; Ephemerides ; Exoplanets ; Amateur astronomy
Abstract:
The ExoClock project is an inclusive, integrated, and interactive
platform that was developed to monitor the ephemerides of the Ariel
targets to increase the mission efficiency. The project makes the best
use of all available resources, i.e., observations from ground
telescopes, midtime values from the literature, and finally,
observations from space instruments. Currently, the ExoClock network
includes 280 participants with telescopes capable of observing 85% of
the currently known Ariel candidate targets. This work includes the
results of ∼1600 observations obtained up to 2020 December 31 from the
ExoClock network. These data in combination with ∼2350 midtime values
collected from the literature are used to update the ephemerides of
180 planets. The analysis shows that 40% of the updated ephemerides
will have an impact on future scheduling as either they have a
significantly improved precision or they have revealed biases in the
old ephemerides. With the new observations, the observing coverage and
rate for half of the planets in the sample has been doubled or more.
Finally, from a population perspective, we identify that the
differences in the 2028 predictions between the old and the new
ephemerides have an STD that is double what is expected from Gaussian
uncertainties. These findings have implications for planning future
observations, where we will need to account for drifts potentially
greater than the prediction uncertainties. The updated ephemerides are
open and accessible to the wider exoplanet community both from our
Open Science Framework repository and our website.
Description:
At the time of this writing, the ExoClock network includes 280
participants (80% are amateur astronomers) and 300 telescopes with
sizes ranging between 6 and 40 inches (80% are smaller than 17 inches);
see Table 1.
Here we present updated ephemerides for 180 of the total of 370
planets that are currently in the ExoClock target list.
Observations were conducted between 2008 and 2020 and submitted to the
ExoClock platform before the end of 2020. See Section 5.1.
File Summary:
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FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table2.dat 432 180 Full list of updated ephemerides and references
refs.dat 80 409 References
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See also:
J/A+A/507/481 : GJ 436b and XO-1b transits (Caceres+, 2009)
J/ApJ/704/1107 : Transiting planets in HATNet field 205 (Latham+, 2009)
J/A+A/508/1011 : Planetary transit of TrES-1 and TrES-2 (Rabus+, 2009)
J/ApJ/691/1145 : Spectrophotometry of TrES-3 and TrES-4 (Sozzetti+, 2009)
J/MNRAS/408/1494 : Planetary transits of TrES-2 and TrES-3 (Colon+, 2010)
J/A+A/524/A25 : Radial Velocities on 6 exoplanet host stars (Triaud+, 2010)
J/ApJ/742/116 : Photometry of 4 massive exoplanets (Bakos+, 2011)
J/ApJ/733/116 : HAT-P-28 and HAT-P-29 photometry (Buchhave+, 2011)
J/AJ/141/179 : Transits of TrES-4b, HAT-P-3b and WASP-12b (Chan+, 2011)
J/ApJ/726/52 : HAT-P-18 and HAT-P-19 follow-up (Hartman+, 2011)
J/ApJ/742/59 : HAT-P-32 and HAT-P-33 follow-up (Hartman+, 2011)
J/A+A/527/A85 : Light curves of HAT-P-3b and HAT-P-14b (Nascimbeni+, 2011)
J/AJ/141/63 : Relative RVs of HAT-P-4 & HAT-P-14 (Winn+, 2011)
J/MNRAS/422/1988 : Three short-period, transiting exoplanets (Anderson+, 2012)
J/AJ/144/19 : Follow-up phot. for HAT-P-34, -35, -36 & -37 (Bakos+, 2012)
J/AJ/144/139 : HAT-P-39, HAT-P-40, and HAT-P-41 follow-up (Hartman+, 2012)
J/MNRAS/426/739 : Velocities for 7 transiting hot Jupiters (Hellier+, 2012)
J/A+A/544/A72 : WASP-42 & WASP-49 photometry and velocities (Lendl+, 2012)
J/A+A/547/A61 : WASP78 and WASP79 RV and photometric data (Smalley+, 2012)
J/A+A/557/A30 : Transits of HAT-P-16 and WASP-21 (Ciceri+, 2013)
J/A+A/551/A73 : RVs for WASP-54b, WASP-56b and WASP-57b (Faedi+ 2013)
J/A+A/552/A82 : WASP-64b and WASP-72b light curves (Gillon+, 2013)
J/A+A/559/A36 : Exoplanets WASP-65b and WASP-75b (Gomez Maqueo Chew+, 2013)
J/A+A/549/A134 : 4 new WASP close-in giant planets (Hebrard+, 2013)
J/MNRAS/434/1300 : WASP-15 and WASP-16 light curves (Southworth+, 2013)
J/MNRAS/445/1114 : WASP-69b, WASP-70Ab and WASP-84b (Anderson+, 2014)
J/A+A/563/A143 : WASP-68b, WASP-73b, WASP-88b transits (Delrez+, 2014)
J/AJ/147/128 : HAT-P-44, HAT-P-45, and HAT-P-46 follow-up (Hartman+, 2014)
J/A+A/570/A64 : WASP-104b and WASP-106b photometry (Smith+, 2014)
J/MNRAS/444/776 : Transiting planets WASP-24, 25 and 26 (Southworth+, 2014)
J/A+A/575/A61 : WASP-20b and WASP-28b photometry and RV (Anderson+, 2015)
J/A+A/577/A54 : HAT-P23 and WASP-48 light curves (Ciceri+, 2015)
J/AJ/150/168 : Sp. & phot. for HAT-P-50--HAT-P-53 (Hartman+, 2015)
J/A+A/579/A136 : HAT-P-36 and WASP-11/HAT-P-10 light curves (Mancini+, 2015)
J/A+A/580/A63 : HATS-13b and HATS-14b light and RV curves (Mancini+, 2015)
J/AJ/152/161 : Photometry for HATS-31--HATS-35 (de Val-Borro+, 2016)
J/AJ/152/108 : i-band phot. for HATS-25 through HATS-30 (Espinoza+, 2016)
J/AJ/152/182 : iz follow-up phot. of HAT-P-65 & HAT-P-66 (Hartman+, 2016)
J/ApJS/225/9 : Kepler TTVs. IX. Full long-cadence set (Holczer+, 2016)
J/A+A/591/A55 : 5 hot Jupiters discovered using WASP (Maxted+, 2016)
J/ApJ/822/86 : False positive prob. for Q1-Q17 DR24 KOIs (Morton+, 2016)
J/AJ/151/138 : 2 hot Jupiters KELT-14b & KELT-15b (Rodriguez+, 2016)
J/MNRAS/457/4205 : WASP-22, WASP-41, WASP-42, WASP-55 (Southworth+, 2016)
J/A+A/585/A126 : 3 irradiated hot Jupiters RV and phot. (West+, 2016)
J/MNRAS/465/3693 : 7 WASP-South transiting exoplanets (Hellier+, 2017)
J/AJ/154/49 : Exoplanet Monitoring Project. II. HAT-P-33 (Wang+, 2017)
J/AJ/155/112 : Radial velocities & LCs for HATS-43-HATS-46 (Brahm+, 2018)
J/A+A/610/A63 : WASP-151b, WASP-153b, WASP-156b (Demangeon+, 2018)
J/AcA/68/371 : WASP and KELT planet transits (Maciejewski+, 2018)
J/A+A/613/A41 : 5 exoplanet light and RV curves (Mancini+, 2018)
J/AJ/157/217 : Transit times of 5 hot Jupiter WASP planets (Bouma+, 2019)
J/AJ/157/242 : Updated study of targets for Ariel (Edwards+, 2019)
J/other/RAA/19.41 : TTVs & linear ephemerides of Kepler planets (Gajdos+, 2019)
J/MNRAS/482/301 : WASP-147b, 160Bb, 164b, and 165b phot. & RV (Lendl+, 2019)
J/A+A/622/A81 : 15 hot Jupiter exoplanets light curves (Mallonn+, 2019)
J/AJ/157/82 : TEMP. V. HAT-P-9, HAT-P-32 & HAT-P-36 phot. (Wang+, 2019)
J/A+A/636/A98 : WASP-18A, WASP-19, WASP-77A phot. (Cortes-Zuleta+, 2020)
J/AcA/70/181 : Planets in Hot Jupiter Systems (Maciejewski+, 2020)
J/AJ/159/150 : Transit times of 11 hot Jupiters (Patra+, 2020)
J/AJ/160/155 : LC segments of 22 host stars with TESS (Wong+, 2020)
http://osf.io/wna5e/ : ExoClock data release B database
Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 11 A11 --- Name Planet name
13- 26 F14.6 d T0 New T0 (BJDTDB)
28- 35 F8.6 d e_T0 [1e-05/0.0007] T0 uncertainty
37- 48 F12.9 d Per [0.78/10.34] New period
50- 60 F11.9 d e_Per [1.9e-8/4e-6] Per uncertainty
62-332 A271 --- Ref1 References for literature data used
(see refs.dat file)
334-368 A35 --- Ref2 Reference for the initial ephemeris
(see refs.dat file)
370-400 A31 --- Ref3 Reference for the transit parameters used
(see refs.dat file)
402-432 A31 --- Ref4 Reference for the stellar parameters used
(see refs.dat file)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: refs.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 33 A33 --- Ref Reference code (Author and year)
35 A1 --- --- [=]
37- 55 A19 --- BibCode Bibcode of the reference
57 A1 --- --- [=]
59- 80 A22 --- Comm VizieR catalog reference
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History:
From electronic version of the journal
References:
Kokori et al. 2022ExA....53..547K 2022ExA....53..547K
Kokori et al. Paper III. 2023ApJS..265....4K 2023ApJS..265....4K Cat. J/ApJS/265/4
(End) Emmanuelle Perret [CDS] 18-May-2022