Journal article
A UV-to-NIR Study of Molecular Gas in the Dust Cavity around RY Lupi
The Astrophysical journal, Vol.855(2), p.98
03/10/2018
DOI: 10.3847/1538-4357/aaaf65
Abstract
We present a study of molecular gas in the inner disk around RY Lupi, with spectra from HST-COS, HST-STIS, and VLT-CRIRES. We model the radial distribution of flux from hot gas in a surface layer between r = 0.1-10 au, as traced by Ly -pumped H2. The result shows H2 emission originating in a ring centered at ∼3 au that declines within r < 0.1 au, which is consistent with the behavior of disks with dust cavities. An analysis of the H2 line shapes shows that a two-component Gaussian profile is statistically preferred to a single-component Gaussian. We interpret this as tentative evidence for gas emitting from radially separated disk regions . The 4.7 m 12CO emission lines are also well fit by two-component profiles . We combine these results with 10 m observations to form a picture of gapped structure within the mm-imaged dust cavity, providing the first such overview of the inner regions of a young disk. The HST SED of RY Lupi is available online for use in modeling efforts.
Details
- Title: Subtitle
- A UV-to-NIR Study of Molecular Gas in the Dust Cavity around RY Lupi
- Creators
- N Arulanantham - Laboratory for Atmospheric and Space PhysicsK France - Laboratory for Atmospheric and Space PhysicsK Hoadley - California Institute of TechnologyC. F Manara - European Southern ObservatoryP. C Schneider - Hamburger Fern-HochschuleJ. M Alcalá - Astronomical Observatory of CapodimonteA Banzatti - University of ArizonaH. M Günther - Kavli Institute for Particle Astrophysics and CosmologyA Miotello - European Southern ObservatoryN. van der Marel - Herzberg Astronomy & Astrophysics Programs , National Research Council of Canada, 5017 West Saanich Rd., Victoria, BC, V9E 2E7, CanadaE F van Dishoeck - Max Planck Institute for Extraterrestrial PhysicsC Walsh - University of LeedsJ. P Williams - University of Hawaiʻi at Mānoa
- Resource Type
- Journal article
- Publication Details
- The Astrophysical journal, Vol.855(2), p.98
- Publisher
- The American Astronomical Society
- DOI
- 10.3847/1538-4357/aaaf65
- ISSN
- 0004-637X
- eISSN
- 1538-4357
- Number of pages
- 16
- Alternative title
- A UV-to-NIR Study of Molecular Gas in the Dust Cavity around RY Lupi
- Language
- English
- Date published
- 03/10/2018
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984429051002771
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