Colette Salyk

Colette Salyk
Harlan J. Smith postdoctoral fellow
McDonald Observatory, University of Texas at Austin
Main Collaborators: Klaus Pontoppidan, Geoffrey A. Blake
Also: John Carr, Joan Najita, John Lacy, Sam Harrold
Provide abundances for testing chemical models
Provide tests of fundamental disk physics and structure
Provide very small-scale spatial information about gas
Inner disk before: CO and H2 (with interesting exceptions: Carr+
2004, Lahuis+ 2006)
Inner disk after: H2O, OH, HCN, CO2, C2H2
?
Salyk+ 2008
See also Carr & Najita 2008
rovibrational lines with Keck-NIRSPEC; Salyk+ 2008
rotational lines with VLT-VISIR;
Pontoppidan+ 2010
Pontoppidan+ 2010
Photo-chemistry?
Pontoppidan+ 2010
more disk
heating
Filled symbol = H2O detected
Salyk+, submitted
more grain
settling
Salyk et al., in prep
larger grains
more grain settling
more grain settling
Salyk et al., in prep Harrold, Lacy+, in prep, and AAS poster
Salyk et al., in prep
Meijerink+ 2009
Transition
(inner hole) disk
IRS spectra
Herbig
(mid-mass) disk
T-Tauri
(low-mass) disks
Spectro-astrometry
velocity
Simon+ 2001
Spectro-astrometry
velocity
Spectro-astrometry
SA signal
(centroid)
velocity
Spectro-astrometry
SA signal
(centroid)
velocity
Spectro-astrometry
SA signal
(centroid)
velocity
Spectro-astrometry
SA signal
(centroid)
velocity
Spectro-astrometry
SA signal (spectral
centroid)
infer a Keplerian
disk
*Spatial resolution
much smaller than
instrument
resolution
velocity
Spectro-astrometry now possible with Keck-NIRSPEC
(thanks to AO availability in L and M bands)
Infer a Keplerian
disk
(see upcoming Keck newsletter)
Spectro-astrometry and interferometry
Pontoppidan+ 2008
(SMA image from Brown+ 2009)
Evidence for warps and asymmetries in disks
Help inform source selection and experimental design
Provide abundance gradients from inner to outer disk
Provide spatial information for <1 AU region potential to search for disk warps and asymmetries
Provide inner disk characteristics for planet-bearing vs.
non-planet-bearing disks
Bethell and Bergin 2009