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Characterizing a World Within the Hot-Neptune Desert: Transit Observations of LTT 9779 b with the Hubble Space Telescope/WFC3

  • Authors: Billy Edwards, Quentin Changeat, Angelos Tsiaras, Andrew Allan, Patrick Behr, Simone R. Hagey, Michael D. Himes, Sushuang Ma, Keivan G. Stassun, Luis Thomas, Alexandra Thompson, Aaron Boley, Luke Booth, Jeroen Bouwman, Kevin France, Nataliea Lowson, Annabella Meech, Caprice L. Phillips, Aline A. Vidotto, Kai Hou Yip, Michelle Bieger, Amélie Gressier, Estelle Janin, Ing-Guey Jiang, Pietro Leonardi, Subhajit Sarkar, Nour Skaf, Jake Taylor, Ming Yang, Derek Ward-Thompson

Billy Edwards et al 2023 The Astronomical Journal 166 .

  • Provider: AAS Journals

Caption: Figure 15.

Anticipated Lyα signature for LTT 9779 b assuming 2/98 He/H (dotted) and 10/90 He/H (solid). While no trace of atmospheric escape was found with the helium triplet, this tracer may offer another chance to detect and/or constrain the escape rate of LTT 9779 b’s atmosphere.

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