HD 28109 hosts a trio of transiting Neptunian planets including a near-resonant pair, confirmed by ASTEP from Antarctica

• Published in: Monthly Notices of the Royal Astronomical Society
• Main Authors: Dransfield, Georgina, Triaud, Amaury H M J, Guillot, Tristan, Mekarnia, Djamel, Nesvorný, David, Crouzet, Nicolas, Abe, Lyu, Agabi, Karim, Buttu, Marco, Cabrera, Juan, Gandolfi, Davide, Günther, Maximilian N, Rodler, Florian, Schmider, François-Xavier, Stee, Philippe, Suarez, Olga, Collins, Karen A, Dévora-Pajares, Martín, Howell, Steve B, Matthews, Elisabeth C, Standing, Matthew R, Stassun, Keivan G, Stockdale, Chris, Quinn, Samuel N, Ziegler, Carl, Crossfield, Ian J M, Lissauer, Jack J, Mann, Andrew W, Matson, Rachel, Schlieder, Joshua, Zhou, George
• Other Authors: NASA, National Science Foundation, National Research Council Canada, Ministério da Ciência, Tecnologia, Inovações e Comunicações, Korea Astronomy and Space Science Institute, European Space Agency, ESO, MSIP, Swiss National Science Foundation, European Research Council, Science and Technology Facilities Council, CRT
• Format: Article in Journal/Newspaper
• Language: English
• Published: Oxford University Press (OUP) 2022
• Subjects: Webb; Antarc*; Antarctica
• Online Access: http://dx.doi.org/10.1093/mnras/stac1383; https://academic.oup.com/mnras/advance-article-pdf/doi/10.1093/mnras/stac1383/43800388/stac1383.pdf; https://academic.oup.com/mnras/article-pdf/515/1/1328/45048866/stac1383.pdf

ABSTRACT We report on the discovery and characterization of three planets orbiting the F8 star HD 28109, which sits comfortably in ${TESS}$’s continuous viewing zone. The two outer planets have periods of $\rm 56.0067 \pm 0.0003~d$ and $\rm 84.2597_{-0.0008}^{+0.0010}~d$, which implies a period rati...