VLT-CRIRES SURVEY OF ROVIBRATIONAL CO EMISSION FROM PROTOPLANETARY DISKS

We present a large, comprehensive survey of rovibrational CO line emission at 4.7[mu]m from 69 protoplanetary disks, obtained with CRIRES on the ESO Very Large Telescope at the highest available spectral resolving power. Our high spectral resolution data provide new insight into the kinematics of th...

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Bibliographic Details
Published in:The Astrophysical journal 2013-06, Vol.770 (2), p.1-21
Main Authors: Brown, J M, Pontoppidan, K M, van Dishoeck, E F, Herczeg, G J, Blake, G A, SMETTE, A
Format: Article
Language:English
Subjects:
ABSORPTION
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
CARBON MONOXIDE
Cobalt
Disks
Emission
EXCITED STATES
FLUORESCENCE
HEAT EXCHANGERS
Inclination
LUMINOSITY
Planet formation
PROTOPLANETS
Spectral emissivity
Spectral lines
STARS
SURFACES
TELESCOPES
ULTRAVIOLET RADIATION
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Summary:We present a large, comprehensive survey of rovibrational CO line emission at 4.7[mu]m from 69 protoplanetary disks, obtained with CRIRES on the ESO Very Large Telescope at the highest available spectral resolving power. Our high spectral resolution data provide new insight into the kinematics of the inner disk gas. The observed line profiles are complex and reveal several different components. Pure double-peaked Keplerian profiles are surprisingly uncommon in our sample, beyond the frequency expected based on disk inclination. Removal of the protostellar envelope between class I and II results in the disappearance of the strong absorption lines and CO ice feature characteristic of class I spectra. However, CO emission from class I and II objects are similar in detection frequency, excitation, and line shape, indicating that inner disk characteristics are established early.
ISSN:0004-637X
1538-4357
DOI:10.1088/0004-637X/770/2/94