The High-energy Spectrum of the Young Planet Host V1298 Tau

Girish M. Duvvuri; P. Wilson Cauley; Fernando Cruz Aguirre; Roy Kilgard; Kevin France; Zachory K. Berta-Thompson; J. Sebastian Pineda

doi:10.3847/1538-3881/acfa74

The Astronomical Journal (Jan 2023)

The High-energy Spectrum of the Young Planet Host V1298 Tau

Girish M. Duvvuri,
P. Wilson Cauley,
Fernando Cruz Aguirre,
Roy Kilgard,
Kevin France,
Zachory K. Berta-Thompson,
J. Sebastian Pineda

Affiliations

Girish M. Duvvuri: ORCiD; Department of Astrophysical and Planetary Sciences, University of Colorado , Boulder, CO 80309, USA ; [email protected]; Center for Astrophysics and Space Astronomy, University of Colorado , 593 UCB, Boulder, CO 80309, USA; Laboratory for Atmospheric and Space Physics, University of Colorado , 600 UCB, Boulder, CO 80309, USA; Department of Physics and Astronomy, Vanderbilt University , Nashville, TN 37235, USA
P. Wilson Cauley: ORCiD; Laboratory for Atmospheric and Space Physics, University of Colorado , 600 UCB, Boulder, CO 80309, USA
Fernando Cruz Aguirre: ORCiD; Department of Astrophysical and Planetary Sciences, University of Colorado , Boulder, CO 80309, USA ; [email protected]; Laboratory for Atmospheric and Space Physics, University of Colorado , 600 UCB, Boulder, CO 80309, USA; The University of Iowa , Department of Physics & Astronomy, Van Allen Hall, Iowa City, IA 52242, USA
Roy Kilgard: Astronomy Department, Wesleyan University , Middletown, CT 06459, USA
Kevin France: ORCiD; Department of Astrophysical and Planetary Sciences, University of Colorado , Boulder, CO 80309, USA ; [email protected]; Center for Astrophysics and Space Astronomy, University of Colorado , 593 UCB, Boulder, CO 80309, USA; Laboratory for Atmospheric and Space Physics, University of Colorado , 600 UCB, Boulder, CO 80309, USA
Zachory K. Berta-Thompson: ORCiD; Department of Astrophysical and Planetary Sciences, University of Colorado , Boulder, CO 80309, USA ; [email protected]; Center for Astrophysics and Space Astronomy, University of Colorado , 593 UCB, Boulder, CO 80309, USA
J. Sebastian Pineda: ORCiD; Laboratory for Atmospheric and Space Physics, University of Colorado , 600 UCB, Boulder, CO 80309, USA

DOI: https://doi.org/10.3847/1538-3881/acfa74
Journal volume & issue: Vol. 166, no. 5
p. 196

Abstract

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V1298 Tau is a young pre-main-sequence star hosting four known exoplanets that are prime targets for transmission spectroscopy with current-generation instruments. This work pieces together observations from the NICER X-ray telescope, the Space Telescope Imaging Spectrograph and Cosmic Origins Spectrograph instruments aboard Hubble Space Telescope, and empirically informed models to create a panchromatic spectral energy distribution for V1298 Tau spanning 1–10 ^5 Å. We describe the methods and assumptions used to assemble the panchromatic spectrum and show that despite this star’s brightness, its high-energy spectrum is near the limit of present X-ray and ultraviolet observatories’ abilities to characterize. We conclude by using the V1298 Tau spectrum as a benchmark for the activity saturation stage of high-energy radiation from solar-mass stars to compare the lifetime cumulative high-energy irradiation of the V1298 Tau planets to other planets orbiting similarly massive stars.

Published in The Astronomical Journal

ISSN: 0004-6256 (Print); 1538-3881 (Online)
Publisher: IOP Publishing
Country of publisher: United Kingdom
LCC subjects: Science: Astronomy
Website: https://iopscience.iop.org/journal/1538-3881

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