The Planetary Science Journal (Jan 2024)
Optical Constants of Ices Important to Planetary Science from Laboratory Reflectance Spectroscopy
- S. C. Tegler,
- W. M. Grundy,
- M. J. Loeffler,
- P. D. Tribbett,
- J. Hanley,
- A. V. Jasko,
- H. Dawson,
- A. N. Morgan,
- K. J. Koga,
- A. O. Madden-Watson,
- M. D. Gomez,
- J. K. Steckloff,
- G. E. Lindberg,
- S. P. Tan,
- S. M. Raposa,
- A. E. Engle,
- C. L. Thieberger,
- D. E. Trilling
Affiliations
- S. C. Tegler
- ORCiD
- Department of Astronomy and Planetary Science, Northern Arizona University , 527 S. Beaver Street, Flagstaff, AZ 86011, USA ; [email protected]
- W. M. Grundy
- ORCiD
- Department of Astronomy and Planetary Science, Northern Arizona University , 527 S. Beaver Street, Flagstaff, AZ 86011, USA ; [email protected]; Lowell Observatory , 1400 W. Mars Hill Road, Flagstaff, AZ 86001, USA
- M. J. Loeffler
- ORCiD
- Department of Astronomy and Planetary Science, Northern Arizona University , 527 S. Beaver Street, Flagstaff, AZ 86011, USA ; [email protected]
- P. D. Tribbett
- ORCiD
- Department of Astronomy and Planetary Science, Northern Arizona University , 527 S. Beaver Street, Flagstaff, AZ 86011, USA ; [email protected]; Astrochemistry Laboratory, NASA Goddard Space Flight Center , Greenbelt, MD 20771, USA
- J. Hanley
- ORCiD
- Department of Astronomy and Planetary Science, Northern Arizona University , 527 S. Beaver Street, Flagstaff, AZ 86011, USA ; [email protected]; Lowell Observatory , 1400 W. Mars Hill Road, Flagstaff, AZ 86001, USA
- A. V. Jasko
- ORCiD
- Department of Astronomy and Planetary Science, Northern Arizona University , 527 S. Beaver Street, Flagstaff, AZ 86011, USA ; [email protected]; Department of Astronomy, Case Western Reserve University , 2083 MLK Jr. Drive, Cleveland, OH 44106, USA; Department of Earth and Environmental Sciences, University of Rochester , 227 Hutchinson Hall, Rochester, NY 14627, USA
- H. Dawson
- ORCiD
- Department of Astronomy and Planetary Science, Northern Arizona University , 527 S. Beaver Street, Flagstaff, AZ 86011, USA ; [email protected]; Department of Earth, Environmental, and Planetary Sciences, Washington University, 1 Brookings Drive, St. Louis, MO 63130, USA; Department of Physics and Astronomy, Purdue University , 525 Northwestern Avenue, W. Lafayette, IN 47907, USA
- A. N. Morgan
- ORCiD
- Department of Astronomy and Planetary Science, Northern Arizona University , 527 S. Beaver Street, Flagstaff, AZ 86011, USA ; [email protected]
- K. J. Koga
- Department of Astronomy and Planetary Science, Northern Arizona University , 527 S. Beaver Street, Flagstaff, AZ 86011, USA ; [email protected]
- A. O. Madden-Watson
- Department of Astronomy and Planetary Science, Northern Arizona University , 527 S. Beaver Street, Flagstaff, AZ 86011, USA ; [email protected]
- M. D. Gomez
- Department of Astronomy and Planetary Science, Northern Arizona University , 527 S. Beaver Street, Flagstaff, AZ 86011, USA ; [email protected]
- J. K. Steckloff
- ORCiD
- Planetary Science Institute , 1700 E. Fort Lowell, Suite 106, Tucson, AZ 85719, USA
- G. E. Lindberg
- ORCiD
- Department of Chemistry and Biochemistry, Northern Arizona University , 700 S. Osborne Drive, Flagstaff, AZ 86011, USA
- S. P. Tan
- ORCiD
- Planetary Science Institute , 1700 E. Fort Lowell, Suite 106, Tucson, AZ 85719, USA
- S. M. Raposa
- Department of Astronomy and Planetary Science, Northern Arizona University , 527 S. Beaver Street, Flagstaff, AZ 86011, USA ; [email protected]
- A. E. Engle
- ORCiD
- Department of Astronomy and Planetary Science, Northern Arizona University , 527 S. Beaver Street, Flagstaff, AZ 86011, USA ; [email protected]
- C. L. Thieberger
- ORCiD
- Department of Astronomy and Planetary Science, Northern Arizona University , 527 S. Beaver Street, Flagstaff, AZ 86011, USA ; [email protected]
- D. E. Trilling
- ORCiD
- Department of Astronomy and Planetary Science, Northern Arizona University , 527 S. Beaver Street, Flagstaff, AZ 86011, USA ; [email protected]
- DOI
- https://doi.org/10.3847/PSJ/ad1683
- Journal volume & issue
-
Vol. 5,
no. 2
p. 31
Abstract
Laboratory-derived optical constants are essential for identifying ices and measuring their relative abundances on solar system objects. Almost all optical constants of ices important to planetary science come from experiments with transmission geometries. Here we describe our new experimental setup and the modification of an iterative algorithm in the literature to measure the optical constants of ices from experiments with reflectance geometries. We apply our techniques to CH _4 ice and H _2 O ice samples and find good agreement between our values and those in the literature, except for one CH _4 band in the literature that likely suffers from saturation. The work we present here demonstrates that labs with reflectance geometries can generate optical constants essential for the proper analysis of near- and mid-infrared spectra of outer solar system objects such as those obtained with the James Webb Space Telescope.
Keywords
- Laboratory astrophysics
- Ice spectroscopy
- Ice composition
- Optical constants (Ice)
- Physical properties (Ice)
