Physical properties and transmission spectrum of theWASP-74 planetary system from multiband photometry

L. Mancini*, J. Southworth, P. Mollière, J. Tregloan-Reed, I. G. Juvan, G. Chen, P. Sarkis, I. Bruni, S. Ciceri, M. I. Andersen, V. Bozza, D. M. Bramich, M. Burgdorf, G. D'Ago, M. Dominik, D. F. Evans, R. Figuera Jaimes, L. Fossati, T. Henning, T. C. Hinse & 15 others M. Hundertmark, U. G. Jørgensen, E. Kerins, H. Korhonen, M. Küffmeier, P. Longa, N. Peixinho, A. Popovas, M. Rabus, S. Rahvar, J. Skottfelt, C. Snodgrass, R. Tronsgaard, Y. Wang, O. Wertz

*Corresponding author for this work

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Abstract

We present broad-band photometry of 11 planetary transits of the hot Jupiter WASP-74 b, using three medium-class telescopes and employing the telescope-defocusing technique. Most of the transits were monitored through I filters and one was simultaneously observed in five optical (U, g', r', i', z') and three near-infrared (J, H, K) passbands, for a total of 18 light curves. We also obtained new high-resolution spectra of the host star. We used these new data to review the orbital and physical properties of the WASP-74 planetary system. We were able to better constrain the main system characteristics, measuring smaller radius and mass for both the hot Jupiter and its host star than previously reported in the literature. Joining our optical data with those taken with the HST in the near infrared, we built up an observational transmission spectrum of the planet, which suggests the presence of strong optical absorbers, as TiO and VO gases, in its atmosphere.

Original languageEnglish
JournalMonthly Notices of the Royal Astronomical Society
Volume485
Issue number4
Pages (from-to)5168-5179
ISSN0035-8711
DOIs
Publication statusPublished - 2019

Keywords

  • Planetary systems
  • Stars: Fundamental parameters
  • Stars: Individual: WASP-74
  • Techniques: Photometric

Cite this

Mancini, L., Southworth, J., Mollière, P., Tregloan-Reed, J., Juvan, I. G., Chen, G., ... Wertz, O. (2019). Physical properties and transmission spectrum of theWASP-74 planetary system from multiband photometry. Monthly Notices of the Royal Astronomical Society, 485(4), 5168-5179. https://doi.org/10.1093/mnras/stz661
Mancini, L. ; Southworth, J. ; Mollière, P. ; Tregloan-Reed, J. ; Juvan, I. G. ; Chen, G. ; Sarkis, P. ; Bruni, I. ; Ciceri, S. ; Andersen, M. I. ; Bozza, V. ; Bramich, D. M. ; Burgdorf, M. ; D'Ago, G. ; Dominik, M. ; Evans, D. F. ; Figuera Jaimes, R. ; Fossati, L. ; Henning, T. ; Hinse, T. C. ; Hundertmark, M. ; Jørgensen, U. G. ; Kerins, E. ; Korhonen, H. ; Küffmeier, M. ; Longa, P. ; Peixinho, N. ; Popovas, A. ; Rabus, M. ; Rahvar, S. ; Skottfelt, J. ; Snodgrass, C. ; Tronsgaard, R. ; Wang, Y. ; Wertz, O. / Physical properties and transmission spectrum of theWASP-74 planetary system from multiband photometry. In: Monthly Notices of the Royal Astronomical Society. 2019 ; Vol. 485, No. 4. pp. 5168-5179.
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title = "Physical properties and transmission spectrum of theWASP-74 planetary system from multiband photometry",
abstract = "We present broad-band photometry of 11 planetary transits of the hot Jupiter WASP-74 b, using three medium-class telescopes and employing the telescope-defocusing technique. Most of the transits were monitored through I filters and one was simultaneously observed in five optical (U, g', r', i', z') and three near-infrared (J, H, K) passbands, for a total of 18 light curves. We also obtained new high-resolution spectra of the host star. We used these new data to review the orbital and physical properties of the WASP-74 planetary system. We were able to better constrain the main system characteristics, measuring smaller radius and mass for both the hot Jupiter and its host star than previously reported in the literature. Joining our optical data with those taken with the HST in the near infrared, we built up an observational transmission spectrum of the planet, which suggests the presence of strong optical absorbers, as TiO and VO gases, in its atmosphere.",
keywords = "Planetary systems, Stars: Fundamental parameters, Stars: Individual: WASP-74, Techniques: Photometric",
author = "L. Mancini and J. Southworth and P. Molli{\`e}re and J. Tregloan-Reed and Juvan, {I. G.} and G. Chen and P. Sarkis and I. Bruni and S. Ciceri and Andersen, {M. I.} and V. Bozza and Bramich, {D. M.} and M. Burgdorf and G. D'Ago and M. Dominik and Evans, {D. F.} and {Figuera Jaimes}, R. and L. Fossati and T. Henning and Hinse, {T. C.} and M. Hundertmark and J{\o}rgensen, {U. G.} and E. Kerins and H. Korhonen and M. K{\"u}ffmeier and P. Longa and N. Peixinho and A. Popovas and M. Rabus and S. Rahvar and J. Skottfelt and C. Snodgrass and R. Tronsgaard and Y. Wang and O. Wertz",
year = "2019",
doi = "10.1093/mnras/stz661",
language = "English",
volume = "485",
pages = "5168--5179",
journal = "Royal Astronomical Society. Monthly Notices",
issn = "0035-8711",
publisher = "Oxford University Press",
number = "4",

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Mancini, L, Southworth, J, Mollière, P, Tregloan-Reed, J, Juvan, IG, Chen, G, Sarkis, P, Bruni, I, Ciceri, S, Andersen, MI, Bozza, V, Bramich, DM, Burgdorf, M, D'Ago, G, Dominik, M, Evans, DF, Figuera Jaimes, R, Fossati, L, Henning, T, Hinse, TC, Hundertmark, M, Jørgensen, UG, Kerins, E, Korhonen, H, Küffmeier, M, Longa, P, Peixinho, N, Popovas, A, Rabus, M, Rahvar, S, Skottfelt, J, Snodgrass, C, Tronsgaard, R, Wang, Y & Wertz, O 2019, 'Physical properties and transmission spectrum of theWASP-74 planetary system from multiband photometry', Monthly Notices of the Royal Astronomical Society, vol. 485, no. 4, pp. 5168-5179. https://doi.org/10.1093/mnras/stz661

Physical properties and transmission spectrum of theWASP-74 planetary system from multiband photometry. / Mancini, L.; Southworth, J.; Mollière, P.; Tregloan-Reed, J.; Juvan, I. G.; Chen, G.; Sarkis, P.; Bruni, I.; Ciceri, S.; Andersen, M. I.; Bozza, V.; Bramich, D. M.; Burgdorf, M.; D'Ago, G.; Dominik, M.; Evans, D. F.; Figuera Jaimes, R.; Fossati, L.; Henning, T.; Hinse, T. C.; Hundertmark, M.; Jørgensen, U. G.; Kerins, E.; Korhonen, H.; Küffmeier, M.; Longa, P.; Peixinho, N.; Popovas, A.; Rabus, M.; Rahvar, S.; Skottfelt, J.; Snodgrass, C.; Tronsgaard, R.; Wang, Y.; Wertz, O.

In: Monthly Notices of the Royal Astronomical Society, Vol. 485, No. 4, 2019, p. 5168-5179.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Physical properties and transmission spectrum of theWASP-74 planetary system from multiband photometry

AU - Mancini, L.

AU - Southworth, J.

AU - Mollière, P.

AU - Tregloan-Reed, J.

AU - Juvan, I. G.

AU - Chen, G.

AU - Sarkis, P.

AU - Bruni, I.

AU - Ciceri, S.

AU - Andersen, M. I.

AU - Bozza, V.

AU - Bramich, D. M.

AU - Burgdorf, M.

AU - D'Ago, G.

AU - Dominik, M.

AU - Evans, D. F.

AU - Figuera Jaimes, R.

AU - Fossati, L.

AU - Henning, T.

AU - Hinse, T. C.

AU - Hundertmark, M.

AU - Jørgensen, U. G.

AU - Kerins, E.

AU - Korhonen, H.

AU - Küffmeier, M.

AU - Longa, P.

AU - Peixinho, N.

AU - Popovas, A.

AU - Rabus, M.

AU - Rahvar, S.

AU - Skottfelt, J.

AU - Snodgrass, C.

AU - Tronsgaard, R.

AU - Wang, Y.

AU - Wertz, O.

PY - 2019

Y1 - 2019

N2 - We present broad-band photometry of 11 planetary transits of the hot Jupiter WASP-74 b, using three medium-class telescopes and employing the telescope-defocusing technique. Most of the transits were monitored through I filters and one was simultaneously observed in five optical (U, g', r', i', z') and three near-infrared (J, H, K) passbands, for a total of 18 light curves. We also obtained new high-resolution spectra of the host star. We used these new data to review the orbital and physical properties of the WASP-74 planetary system. We were able to better constrain the main system characteristics, measuring smaller radius and mass for both the hot Jupiter and its host star than previously reported in the literature. Joining our optical data with those taken with the HST in the near infrared, we built up an observational transmission spectrum of the planet, which suggests the presence of strong optical absorbers, as TiO and VO gases, in its atmosphere.

AB - We present broad-band photometry of 11 planetary transits of the hot Jupiter WASP-74 b, using three medium-class telescopes and employing the telescope-defocusing technique. Most of the transits were monitored through I filters and one was simultaneously observed in five optical (U, g', r', i', z') and three near-infrared (J, H, K) passbands, for a total of 18 light curves. We also obtained new high-resolution spectra of the host star. We used these new data to review the orbital and physical properties of the WASP-74 planetary system. We were able to better constrain the main system characteristics, measuring smaller radius and mass for both the hot Jupiter and its host star than previously reported in the literature. Joining our optical data with those taken with the HST in the near infrared, we built up an observational transmission spectrum of the planet, which suggests the presence of strong optical absorbers, as TiO and VO gases, in its atmosphere.

KW - Planetary systems

KW - Stars: Fundamental parameters

KW - Stars: Individual: WASP-74

KW - Techniques: Photometric

U2 - 10.1093/mnras/stz661

DO - 10.1093/mnras/stz661

M3 - Journal article

VL - 485

SP - 5168

EP - 5179

JO - Royal Astronomical Society. Monthly Notices

JF - Royal Astronomical Society. Monthly Notices

SN - 0035-8711

IS - 4

ER -