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Interferometric Observations of Formaldehyde in the Protoplanetary Disk around LkCa15

Yuri Aikawa·Munetake Momose·Wing-Fai Thi·Gerd-Jan van Zadelhoff·Chunhua Qi·Geoffrey A. Blake·Ewine F. van Dishoeck
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Abstract

Emission from the $2_{12}-1_{11}$ line of H$_2$CO has been detected and marginally resolved toward LkCa15 by the Nobeyama Millimeter Array. The column density of H$_2$CO is higher than that observed in DM Tau and than predicted by theoretical models of disk chemistry; also the line-intensity profile is less centrally peaked than that for CO. A similar behavior is observed in other organic gaseous molecules in the LkCa 15 disk.

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Yuri Aikawa, Munetake Momose, Wing-Fai Thi, Gerd-Jan van Zadelhoff, Chunhua Qi, Geoffrey A. Blake, Ewine F. van Dishoeck. 2003-01-10. Interferometric Observations of Formaldehyde in the Protoplanetary Disk around LkCa15. https://doi.org/10.1093/pasj%2F55.1.11

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