Near-infrared spectroscopic observations of massive young stellar object candidates in the central molecular zone

G. Nandakumar; M. Schultheis; A. Feldmeier-Krause; R. Schödel; N. Neumayer; F. Matteucci; N. Ryde; A. Rojas-Arriagada; A. Tej

doi:10.1051/0004-6361/201731918

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Volume 609 (January 2018)

A&A, 609 (2018) A109

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Table 2

Details of the search for previously identified sources within 2.̋0 of our spectroscopically identified YSOs in the SIMBAD database.

SST GC No.	RA (°)	Dec (°)	Distance (in ′′)	Source type	J (mag)	H (mag)	K_S (mag)	Field

238110	265.93584	–29.67287	0.64	X-ray source^a	17.19	13.64	11.84	18
517724	266.40542	–28.89823	0.07	OB supergiant^b, non-YSO^c	15.75	12.80	11.23	15
520760	266.41002	–28.89086	1.54	radio source^d, YSO^e	...	15.59	13.17	15
524419	266.41569	–28.89559	0.50	non-YSO^c	...	15.86	14.02	15
525666	266.41759	–28.89117	0.04	non-YSO^c	...	14.49	12.74	15
531300	266.42633	–28.87979	0.17	Blue super giant^b	14.70	11.67	10.11	15
535007	266.43185	–28.87358	0.05	non-YSO^c	...	16.05	13.81	15
528828	266.42248	–28.90728	0.11	Long period variable star^f	...	...	13.69	8
541457	266.44147	–28.90716	...	...	...	14.28	12.53	8
553700	266.45999	–28.91312	...	...	15.11	13.09	12.27	8
563727	266.47539	–28.97628	...	...	...	14.75	12.97	8
567598	266.48123	–28.93786	...	...	...	14.71	12.92	8
609669	266.54470	–28.92073	...	...	...	16.24	14.17	8
610642	266.54618	–28.92802	0.05	Maybe YSO^c	...	15.26	12.69	8
584563	266.50690	–28.92095	0.17	Blue super giant^b	13.45	10.69	9.12	8
585974	266.50900	–28.95653	...	...	16.80	11.73	9.42	8
599826	266.52982	–28.93144	0.52	Long period variable star^f	...	...	13.87	8
373107	266.17890	–29.33702	...	...	16.48	13.59	11.94	4
388790	266.20389	–29.39521	0.40	non-YSO^c	...	14.12	12.05	5
352034	266.14518	–29.39360	...	...	...	12.52	10.95	5
395315	266.21438	–29.34097	0.02	YSO^e	...	15.95	13.65	4
405235	266.23023	–29.26057	0.28	non-YSO^c	...	14.77	12.97	4
358063	266.15475	–29.31017	0.14	YSO^e	15.59	13.42	11.79	4

Notes. For each source represented by their SST GC number, their equatorial coordinates in degrees, distance from the source, source type along with corresponding references, and JHK_S magnitudes from SIRIUS catalogue are listed. For sources with no counterpart within 2.̋0 and no valid photometry in J or H bands, we use “...” for the corresponding column.

^(a)

Muno et al. (2003);

^(b)

Mauerhan et al. (2010a);

^(c)

An et al. (2011);

^(d)

Dong et al. (2015);

^(e)

Yusef-Zadeh et al. (2009);

^(f)

Matsunaga et al. (2009), Glass et al. (2001).

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