Depletion of 15N in the center of L1544: Early transition from atomic to molecular nitrogen?

We performed sensitive observations of the N15ND+(1–0) and 15NND+(1–0) lines toward the prestellar core L1544 using the IRAM 30 m telescope. The lines are not detected down to 3σ levels in 0.2 km s−1 channels of ~6 mK. The non-detection provides the lower limit of the 14N/15N ratio for N2D+ of ~700–...

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Veröffentlicht in:	Astronomy and astrophysics (Berlin) 2018-07, Vol.615
Hauptverfasser:	Furuya, K., Watanabe, Y., Sakai, T., Aikawa, Y., Yamamoto, S.
Format:	Artikel
Sprache:	eng
Schlagworte:	astrochemistry ISM: clouds ISM: individual objects: L1544 ISM: molecules
Online-Zugang:	Volltext
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