Detection of Gaps in Circumstellar Disks

Details Detection of Gaps in Circumstellar Disks Detection of Gaps in Circumstellar Disks

Jan 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003apj...583l..35s&link_type=abstract

The Astrophysical Journal, Volume 583, Issue 1, pp. L35-L38.

Astronomy and Astrophysics

Astronomy

4

Accretion, Accretion Disks, Stars: Circumstellar Matter, Stars: Planetary Systems: Formation, Stars: Planetary Systems: Protoplanetary Disks, Planets And Satellites: Formation, Radiative Transfer

Scientific paper

We analyze the spectral appearance of gaps occurring in circumstellar disks possibly indicating the presence of a protoplanetary or planetary object. Based on the standard parameterized disk model, we explore the 10-parameter space of possible disk configurations and properties to identify the parameter ranges where the ratio of the continuum flux from disks without and with a gap is maximum. The exploration is performed with a Monte Carlo search; the maxima are found using a simulated annealing algorithm. The strongest influence on the spectra occurs for wavelengths ranging from 10 to 300 μm, with a maximum flux ratio of 1.5 for a single-planet gap and 2.5 for a double-planet gap, respectively. Analyzing the resulting spectra, we conclude that, investigating spectral energy distributions without spectral dust features, gaps typically caused by planets cannot be detected as a prominent feature.

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