Probing the Dragonfish star-forming complex: the ionizing population of the young massive cluster Mercer 30

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Volume 589 (May 2016)

A&A, 589 (2016) A69

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Table 2

Equatorial coordinates, magnitudes, and spectral types of spectroscopically observed stars in the Mercer 30 field.

ID	RA	Declination	H ^a	K _S ^a	Source	Spectral type

Mc30-1	12^h14^m31.54^s	−62°58′54.3′′	9.06 ± 0.01	8.54 ± 0.01	HST	O6-7.5 If+
Mc30-2	12^h14^m31.64^s	−62°58′48.1′′	8.63 ± 0.01	8.14 ± 0.01	HST	B1-4 Ia+
Mc30-3	12^h14^m31.65^s	−62°58′45.1′′	11.62 ± 0.02	11.09 ± 0.02	HST	O6 If
Mc30-4	12^h14^m22.11^s	−62°58′59.9′′	10.99 ± 0.04	10.71 ± 0.04	VVV	F-G
Mc30-5	12^h14^m30.82^s	−62°58′53.2′′	13.06 ± 0.03	12.56 ± 0.04	HST	O7-8 IV-V
Mc30-6a	12^h14^m31.73^s	−62°58′52.1′′	9.56 ± 0.01	9.02 ± 0.01	HST	Ofpe/WN9
Mc30-6b	12^h14^m31.83^s	−62°58′51.8′′	10.25 ± 0.01	9.66 ± 0.01	HST	O6 If
Mc30-7	12^h14^m33.10^s	−62°58′51.0′′	10.25 ± 0.01	9.67 ± 0.01	HST	WN6
Mc30-8	12^h14^m33.91^s	−62°58′48.7′′	10.30 ± 0.01	9.64 ± 0.01	HST	WN7
Mc30-9	12^h14^m33.03^s	−62°58′41.9′′	11.25 ± 0.02	10.68 ± 0.02	HST	O6-7 I-III
Mc30-10	12^h14^m32.04^s	−62°58′52.2′′	11.84 ± 0.02	11.28 ± 0.02	HST	O4 I-III
Mc30-11	12^h14^m32.10^s	−62°58′49.6′′	11.33 ± 0.02	10.77 ± 0.02	HST	O5.5-6 I-II
Mc30-12	12^h14^m32.18^s	−62°58′46.9′′	13.17 ± 0.03	12.66 ± 0.04	HST	O7.5-8.5 III-V
Mc30-13	12^h14^m32.73^s	−62°58′55.0′′	11.63 ± 0.02	11.13 ± 0.02	HST	O5.5-6 I-II
Mc30-14	12^h14^m31.33^s	−62°58′42.3′′	13.39 ± 0.03	12.94 ± 0.05	HST	O9-B3 II-V
Mc30-15	12^h14^m27.46^s	−62°58′6.2′′	14.027 ± 0.006	13.524 ± 0.002	VVV	G-M
Mc30-16	12^h14^m26.55^s	−62°57′57.7′′	13.08 ± 0.01	12.881 ± 0.002	VVV	K-M
Mc30-17	12^h14^m32.19^s	−62°58′50.7′′	13.00 ± 0.03	12.46 ± 0.04	HST	O8.5-B1 II-V
Mc30-18	12^h14^m32.34^s	−62°58′48.1′′	11.99 ± 0.02	11.51 ± 0.02	HST	O7.5-8.5 I-II
Mc30-19	12^h14^m32.53^s	−62°58′42.8′′	11.67 ± 0.02	11.09 ± 0.02	HST	O6.5-7 I-III
Mc30-20	12^h14^m30.79^s	−62°58′39.5′′	10.42 ± 0.01	9.68 ± 0.01	HST	K-M
Mc30-21	12^h14^m33.90^s	−62°58′7.9′′	12.24 ± 0.04	11.57 ± 0.03	VVV	K-M
Mc30-22	12^h14^m31.41^s	−62°59′1.4′′	13.36 ± 0.03	12.87 ± 0.04	HST	O9 III-V
Mc30-23	12^h14^m29.44^s	−62°58′58.9′′	11.42 ± 0.04	11.08 ± 0.04	VVV	G

Notes.

^(a)

The F160W and F222M magnitudes of HST sources have been converted to H and K_S (see Sect. 3.2).

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