We present the ALMA Band 3 and Band 6 results of ^ { 12 } CO ( 2-1 ) , ^ { 13 } CO ( 2-1 ) , H30 \alpha recombination line , free-free emission around 98 GHz , and the dust thermal emission around 230 GHz toward the N159 East Giant Molecular Cloud ( N159E ) in the Large Magellanic Cloud ( LMC ) .
LMC is the nearest active high-mass star forming face-on galaxy at a distance 50 kpc and is the best target for studing high-mass star formation .
ALMA observations show that N159E is the complex of filamentary clouds with the width and length of \sim 1 pc and several pc .
The total molecular mass is 0.92 \times 10 ^ { 5 } M _ { \odot } from the ^ { 13 } CO ( 2-1 ) intensity .
N159E harbors the well-known Papillon Nebula , a compact high-excitation HII region .
We found that a YSO associated with the Papillon Nebula has the mass of 35M _ { \odot } and is located at the intersection of three filamentary clouds .
It indicates that the formation of the high-mass YSO was induced by the collision of filamentary clouds . Fukui et al .
( 14 ) reported a similar kinematic structure toward a YSO in the N159 West region which is another YSO that has the mass larger than 35M _ { \odot } in these two regions .
This suggests that the collision of filamentary clouds is a primary mechanism of high-mass star formation .
We found a small molecular hole around the YSO in Papillon Nebula with sub-pc scale .
It is filled by free-free and H30 \alpha emission .
Temperature of the molecular gas around the hole reaches \sim 80 K. It indicates that this YSO has just started the distruction of parental molecular cloud .