• Corpus ID: 119464003

Constraining Stellar Photospheres as an Essential Step for Transmission Spectroscopy of Small Exoplanets

@article{Rackham2019ConstrainingSP,
  title={Constraining Stellar Photospheres as an Essential Step for Transmission Spectroscopy of Small Exoplanets},
  author={Benjamin V. Rackham and Arazi Pinhas and D{\'a}niel Apai and Rapha{\"e}lle D. Haywood and Heather M. Cegla and N{\'e}stor Espinoza and Johanna K. Teske and Michael A. Gully-Santiago and Gioia Rau and Brett M. Morris and Daniel Angerhausen and Thomas Barclay and Ludmila Carone and P. Wilson Cauley and Julien de Wit and Shawn D. Domagal‐Goldman and Chuanfei Dong and Diana Dragomir and Mark S. Giampapa and Yasuhiro Hasegawa and Natalie R. Hinkel and Renyu Hu and Andr'es Jord'an and Irina N. Kitiashvili and Laura Kreidberg and Carey M. Lisse and Joe Llama and Mercedes L'opez-Morales and Bertrand Mennesson and Karan Molaverdikhani and David James Osip and Elisa V. Quintana},
  journal={arXiv: Solar and Stellar Astrophysics},
  year={2019}
}
Transmission spectra probe the atmospheres of transiting exoplanets, but these observations are also subject to signals introduced by magnetic active regions on host stars. Here we outline scientific opportunities in the next decade for providing useful constraints on stellar photospheres and inform interpretations of transmission spectra of the smallest ($R<4\,R_{\odot}$) exoplanets. We identify and discuss four primary opportunities: (1) refining stellar magnetic active region properties… 

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References

SHOWING 1-4 OF 4 REFERENCES
Understanding Stellar Contamination in Exoplanet Transmission Spectra as an Essential Step in Small Planet Characterization
Transmission spectroscopy during planetary transits is expected to be a major source of information on the atmospheres of small (approximately Earth-sized) exoplanets in the next two decades. This
Stellar Characterization Necessary to Define Holistic Planetary Habitability.
It is a truism within the exoplanet field that "to know the planet, you must know the star." This pertains to the physical properties of the star (i.e. mass, radius, luminosity, age, multiplicity),
Society of Photo-Optical Instrumentation Engineers
We report here the preliminary results obtained with the multi-conjugate adaptive optics (MCAO) system at the Dunn Solar Telescope (DST/NSO MCAO) and the optical setup and performances are presented