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Quintuplet Cluster

quint2

8 and 10 are previously known He I emission-line stars.
1, 2, 3, 4 and 9 are thought to be enshrouded protostars.
quint1
Nomenclature from Moneti, A., Glass, I. S., and Moorwood, A. F. M. 1994, MNRAS, 268, 194

Spectra for WC9 Star and LBV Candidate

spectra

Reference: Figer, Donald F., McLean, Ian S., Morris, Mark, Two New Wolf-Rayet Stars and a Luminous Blue Variable Star in the Quintuplet (AFGL 2004) Near the Galactic Center, Astrophysical Journal Letters, 447, L29, 1995.

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