Infrared Spectroscopic Studies of Gases in the Circumstellar Environments of Young Stellar Objects

Benjamin A. Sargent, William J. Forrest, Joel D. Green, Edward J. Montiel, Curtis Dewitt, Matthew J. Richter, Bruce G. Elmegreen, L. Viktor Tóth, Manuel Güdel

Research output: Article

Abstract

The building blocks of planets in planet-forming ("protoplanetary") disks are assembled early in the lifetime of a young star. The gas disks are relatively short-lived, with a half-life of about 3 million years, as chemical reactions modify the reservoir of material from the natal molecular cloud. Spitzer Space Telescope Infrared Spectrograph (IRS) spectra of protoplanetary disks around T Tauri stars show emission from H2O and absorption from other gases, sometimes consistent with formaldehyde, H2CO, and other times consistent with formic acid, HCOOH, in the 5-7.5 μm region. SOFIA-EXES spectra of YSOs that follow up on these Spitzer-IRS studies are presented. How the gaseous features observed between 5-7.5 μm relate to those at other wavelengths is discussed. This work suggests that water and organic molecules, which are crucial for life as we know it, are present in the habitable zones of stars at a very early age [of 1-3 million years].

Original languageEnglish
Pages (from-to)365-366
Number of pages2
JournalProceedings of the International Astronomical Union
DOIs
Publication statusAccepted/In press - jan. 1 2020

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Astronomy and Astrophysics
  • Nutrition and Dietetics
  • Public Health, Environmental and Occupational Health
  • Space and Planetary Science

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    Sargent, B. A., Forrest, W. J., Green, J. D., Montiel, E. J., Dewitt, C., Richter, M. J., Elmegreen, B. G., Tóth, L. V., & Güdel, M. (Accepted/In press). Infrared Spectroscopic Studies of Gases in the Circumstellar Environments of Young Stellar Objects. Proceedings of the International Astronomical Union, 365-366. https://doi.org/10.1017/S174392131900214X