SIMBAD references

2018ApJ...855...98A - Astrophys. J., 855, 98-98 (2018/March-2)

A UV-to-NIR study of molecular gas in the dust cavity around RY Lupi.

ARULANANTHAM N., FRANCE K., HOADLEY K., MANARA C.F., SCHNEIDER P.C., ALCALA J.M., BANZATTI A., GUNTHER H.M., MIOTELLO A., VAN DER MAREL N., VAN DISHOECK E.F., WALSH C. and WILLIAMS J.P.

Abstract (from CDS):

We present a study of molecular gas in the inner disk (r< 20au) 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 Lyα-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 (FWHMbroad,H2_=105±15km s–1;FWHMnarrow,H2_=43±13km s–1) is statistically preferred to a single-component Gaussian. We interpret this as tentative evidence for gas emitting from radially separated disk regions (<rbroad,H2_>∼0.4±0.1au;<rnarrow,H2_>∼3±2au). The 4.7 µm 12CO emission lines are also well fit by two-component profiles (<rbroad,CO>=0.4±0.1au;<rnarrow,CO>=15±2au). We combine these results with 10 µm 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.

Abstract Copyright: © 2018. The American Astronomical Society. All rights reserved.

Journal keyword(s): ISM: molecules - protoplanetary disks - stars: pre-main sequence

CDS comments: Paragr. 5: TYC 7851 was not identified.

Simbad objects: 15

goto Full paper

goto View the reference in ADS

To bookmark this query, right click on this link: simbad:2018ApJ...855...98A and select 'bookmark this link' or equivalent in the popup menu


2019.12.11-17:47:45

© Université de Strasbourg/CNRS

    • Contact