دورية أكاديمية
Constraining the reflective properties of WASP-178 b using CHEOPS photometry
| العنوان: | Constraining the reflective properties of WASP-178 b using CHEOPS photometry |
|---|---|
| المؤلفون: | Pagano, I., Scandariato, G., Singh, V., Lendl, M., Queloz, D., Simon, Attila, Sousa, S. G., Brandeker, A., Cameron, A. Collier, Sulis, S., Van Grootel, V., Wilson, T. G., Alibert, Y., Alonso, R., Anglada, G., Bárczy, T., Navascues, D. Barrado, Barros, S. C. C., Baumjohann, W., Beck, M., Beck, T., Benz, W., Billot, N., Bonfils, X., Borsato, L., Broeg, C., Bruno, G., Carone, L., Charnoz, S., Corral van Damme, C., Csizmadia, Sz., Cubillos, P. E., Davies, M. B., Deleuil, M., Deline, A., Delrez, L., Demangeon, O. D. S., Demory, B.-O., Ehrenreich, D., Erikson, A., Fortier, A., Fossati, L., Fridlund, M., Gandolfi, D., Gillon, M., Güdel, M., Günther, M. N., Helling, Ch., Hoyer, S., Isaak, K. G., Kiss, L. L., Kopp, E., Lam, K. W. F., Laskar, J., Lecavelier des Etangs, A., Magrin, D., Maxted, P. F. L., Mordasini, C., Munari, M., Nascimbeni, V., Olofsson, G., Ottensamer, R., Pallé, E., Peter, G., Piotto, G., Pollacco, D., Ragazzoni, R., Rando, N., Rauer, H., Reimers, C., Ribas, I., Rieder, M., Santos, N. C., Ségransan, D., Smith, A. M. S., Stalport, M., Steller, M., Szabó, Gy. M., Thomas, N., Udry, S., Venturini, J., Walton, N. A. |
| المصدر: | Pagano, I.; Scandariato, G.; Singh, V.; Lendl, M.; Queloz, D.; Simon, Attila; Sousa, S. G.; Brandeker, A.; Cameron, A. Collier; Sulis, S.; Van Grootel, V.; Wilson, T. G.; Alibert, Y.; Alonso, R.; Anglada, G.; Bárczy, T.; Navascues, D. Barrado; Barros, S. C. C.; Baumjohann, W.; Beck, M.; . (2024). Constraining the reflective properties of WASP-178 b using CHEOPS photometry. Astronomy and astrophysics, 682 EDP Sciences 10.1051/0004-6361/202346705 |
| بيانات النشر: | EDP Sciences |
| سنة النشر: | 2024 |
| المجموعة: | BORIS (Bern Open Repository and Information System, University of Bern) |
| مصطلحات موضوعية: | 000 Computer science, knowledge & systems, 520 Astronomy, 530 Physics, 620 Engineering |
| الوصف: | Context. Multiwavelength photometry of the secondary eclipses of extrasolar planets is able to disentangle the reflected and thermally emitted light radiated from the planetary dayside. Based on this, we can measure the planetary geometric albedo Ag, which is an indicator of the presence of clouds in the atmosphere, and the recirculation efficiency ϵ, which quantifies the energy transport within the atmosphere. Aims. We measure Ag and ϵ for the planet WASP-178 b, a highly irradiated giant planet with an estimated equilibrium temperature of 2450 K. Methods. We analyzed archival spectra and the light curves collected by CHEOPS and TESS to characterize the host WASP-178, refine the ephemeris of the system, and measure the eclipse depth in the passbands of the two telescopes. Results. We measured a marginally significant eclipse depth of 70 ± 40 ppm in the TESS passband, and a statistically significant depth of 70 ± 20 ppm in the CHEOPS passband. Conclusions. Combining the eclipse-depth measurement in the CHEOPS (λeff = 6300 Å) and TESS (λeff = 8000 Å) passbands, we constrained the dayside brightness temperature of WASP-178 b in the 2250–2800 K interval. The geometric albedo 0.1< Ag<0.35 generally supports the picture that giant planets are poorly reflective, while the recirculation efficiency ϵ >0.7 makes WASP-178 b an interesting laboratory for testing the current heat-recirculation models. |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | English |
| العلاقة: | https://boris.unibe.ch/195623Test/ |
| الإتاحة: | https://doi.org/10.1051/0004-6361/202346705Test https://boris.unibe.ch/195623/1/aa46705-23.pdfTest https://boris.unibe.ch/195623Test/ |
| حقوق: | info:eu-repo/semantics/openAccess |
| رقم الانضمام: | edsbas.78AA4F75 |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |