The Astrophysical Journal (Jan 2024)
High-contrast JWST-MIRI Spectroscopy of Planet-forming Disks for the JDISC Survey
- Klaus M. Pontoppidan,
- Colette Salyk,
- Andrea Banzatti,
- Ke Zhang,
- Ilaria Pascucci,
- Karin I. Öberg,
- Feng Long,
- Carlos E. Romero-Mirza,
- John Carr,
- Joan Najita,
- Geoffrey A. Blake,
- Nicole Arulanantham,
- Sean Andrews,
- Nicholas P. Ballering,
- Edwin Bergin,
- Jenny Calahan,
- Douglas Cobb,
- Maria Jose Colmenares,
- Annie Dickson-Vandervelde,
- Anna Dignan,
- Joel Green,
- Phoebe Heretz,
- Gregory Herczeg,
- Anusha Kalyaan,
- Sebastiaan Krijt,
- Tyler Pauly,
- Paola Pinilla,
- Leon Trapman,
- Chengyan Xie
Affiliations
- Klaus M. Pontoppidan
- ORCiD
- Jet Propulsion Laboratory, California Institute of Technology , 4800 Oak Grove Drive, Pasadena, CA 91109, USA ; [email protected]; Division of Geological and Planetary Sciences , California Institute of Technology, MC 150-21, 1200 E California Boulevard, Pasadena, CA 91125, USA
- Colette Salyk
- ORCiD
- Department of Physics and Astronomy , Vassar College, 124 Raymond Avenue, Poughkeepsie, NY 12604, USA
- Andrea Banzatti
- ORCiD
- Department of Physics, Texas State University , 749 N Comanche Street, San Marcos, TX 78666, USA
- Ke Zhang
- ORCiD
- Department of Astronomy, University of Wisconsin-Madison , Madison, WI 53706, USA
- Ilaria Pascucci
- ORCiD
- Department of Planetary Sciences, University of Arizona , 1629 East University Boulevard, Tucson, AZ 85721, USA
- Karin I. Öberg
- ORCiD
- Center for Astrophysics , Harvard & Smithsonian, 60 Garden St., Cambridge, MA 02138, USA
- Feng Long
- ORCiD
- Lunar and Planetary Laboratory, University of Arizona , Tucson, AZ 85721, USA
- Carlos E. Romero-Mirza
- ORCiD
- Center for Astrophysics , Harvard & Smithsonian, 60 Garden St., Cambridge, MA 02138, USA
- John Carr
- ORCiD
- Department of Astronomy, University of Maryland , College Park, MD 20742, USA
- Joan Najita
- ORCiD
- NSFs NOIRLab, 950 N. Cherry Avenue , Tucson, AZ 85719, USA
- Geoffrey A. Blake
- ORCiD
- Division of Geological and Planetary Sciences , California Institute of Technology, MC 150-21, 1200 E California Boulevard, Pasadena, CA 91125, USA
- Nicole Arulanantham
- ORCiD
- Space Telescope Science Institute , 3700 San Martin Drive, Baltimore, MD 21218, USA
- Sean Andrews
- ORCiD
- Center for Astrophysics , Harvard & Smithsonian, 60 Garden St., Cambridge, MA 02138, USA
- Nicholas P. Ballering
- ORCiD
- Department of Astronomy, University of Virginia , Charlottesville, VA 22904, USA
- Edwin Bergin
- ORCiD
- Department of Astronomy, University of Michigan , Ann Arbor, MI 48109, USA
- Jenny Calahan
- ORCiD
- Center for Astrophysics , Harvard & Smithsonian, 60 Garden St., Cambridge, MA 02138, USA
- Douglas Cobb
- Department of Physics and Astronomy , Vassar College, 124 Raymond Avenue, Poughkeepsie, NY 12604, USA
- Maria Jose Colmenares
- ORCiD
- Department of Astronomy, University of Michigan , Ann Arbor, MI 48109, USA
- Annie Dickson-Vandervelde
- ORCiD
- Department of Physics and Astronomy , Vassar College, 124 Raymond Avenue, Poughkeepsie, NY 12604, USA
- Anna Dignan
- Department of Physics and Astronomy , Vassar College, 124 Raymond Avenue, Poughkeepsie, NY 12604, USA
- Joel Green
- ORCiD
- Space Telescope Science Institute , 3700 San Martin Drive, Baltimore, MD 21218, USA
- Phoebe Heretz
- ORCiD
- Department of Physics and Astronomy , Vassar College, 124 Raymond Avenue, Poughkeepsie, NY 12604, USA
- Gregory Herczeg
- ORCiD
- Kavli Institute for Astronomy and Astrophysics, Peking University , Yi He Yuan Lu 5, Haidian Qu, 100871 Beijing, People's Republic of China
- Anusha Kalyaan
- ORCiD
- Department of Physics, Texas State University , 749 N Comanche Street, San Marcos, TX 78666, USA
- Sebastiaan Krijt
- ORCiD
- School of Physics and Astronomy, University of Exeter , Stocker Road, Exeter, EX4 4QL, UK
- Tyler Pauly
- ORCiD
- Space Telescope Science Institute , 3700 San Martin Drive, Baltimore, MD 21218, USA
- Paola Pinilla
- ORCiD
- Mullard Space Science Laboratory, University College London , Holmbury St Mary, Dorking, Surrey, RH5 6NT, UK
- Leon Trapman
- ORCiD
- Department of Astronomy, University of Wisconsin-Madison , Madison, WI 53706, USA
- Chengyan Xie
- ORCiD
- Lunar and Planetary Laboratory, University of Arizona , Tucson, AZ 85721, USA
- DOI
- https://doi.org/10.3847/1538-4357/ad20f0
- Journal volume & issue
-
Vol. 963,
no. 2
p. 158
Abstract
The JWST Disk Infrared Spectral Chemistry Survey (JDISCS) aims to understand the evolution of the chemistry of inner protoplanetary disks using the Mid-InfraRed Instrument (MIRI) on the James Webb Space Telescope (JWST). With a growing sample of >30 disks, the survey implements a custom method to calibrate the MIRI Medium Resolution Spectrometer (MRS) to contrasts of better than 1:300 across its 4.9–28 μ m spectral range. This is achieved using observations of Themis family asteroids as precise empirical reference sources. The high spectral contrast enables precise retrievals of physical parameters, searches for rare molecular species and isotopologues, and constraints on the inventories of carbon- and nitrogen-bearing species. JDISCS also offers significant improvements to the MRS wavelength and resolving power calibration. We describe the JDISCS calibrated data and demonstrate their quality using observations of the disk around the solar-mass young star FZ Tau. The FZ Tau MIRI spectrum is dominated by strong emission from warm water vapor. We show that the water and CO line emission originates from the disk surface and traces a range of gas temperatures of ∼500–1500 K. We retrieve parameters for the observed CO and H _2 O lines and show that they are consistent with a radial distribution represented by two temperature components. A high water abundance of n (H _2 O) ∼ 10 ^−4 fills the disk surface at least out to the 350 K isotherm at 1.5 au. We search the FZ Tau environs for extended emission, detecting a large (radius of ∼300 au) ring of emission from H _2 gas surrounding FZ Tau, and discuss its origin.
Keywords
- Protoplanetary disks
- James Webb Space Telescope
- Water vapor
- Infrared spectroscopy
- Astronomy data reduction
- Astrochemistry
