Unveiling the physical conditions of the youngest disks - A warm embedded disk in L1527

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Table 1

Overview of the molecular line observations toward L1527.






Molecule	Transition	Frequency	A_ul^a	g_up^b	E_up^c	Beam	Δv^d	rms	rms
		(GHz)	(s⁻¹)		(K)	(′′)	(km s⁻¹)	(mJy beam⁻¹	(K
								channel⁻¹)	channel⁻¹)





¹³CO	J = 2–1	220.39868	6.038 × 10⁻⁷	5	15.87	0.32 × 0.18 (PA = 39.0°)	0.08^e	10.2^f	4.4^f
C¹⁸O	J = 2–1	219.56035	6.011 × 10⁻⁷	5	15.81	0.32 × 0.19 (PA = 38.7°)	0.04^e	8.7^f	3.6^f
N₂D⁺	J = 3–2	231.32183	7.138 × 10⁻⁴	7	22.20	0.93 × 0.71 (PA = 10.7°)	0.08	10.4	0.4

Notes. ^(a) Einstein-A coefficient. ^(b) Upper level degeneracy. ^(c) Upper level energy. ^(d) Velocity resolution. ^(e) Velocities were binned to 0.16 km s⁻¹. ^(f) In 0.16 km s⁻¹ channels.

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