2001A&A...376..124C

Query : 2001A&A...376..124C

2001A&A...376..124C - Astronomy and Astrophysics, volume 376, 124-135 (2001/9-2)

Adaptive optics L-band observations of the Galactic Center region.

CLENET Y., ROUAN D., GENDRON E., MONTRI J., RIGAUT F., LENA P. and LACOMBE F.

Abstract (from CDS):

L-band adaptive optics observations of the Galactic Center region have been performed in June 1999 and May 2000 at La Silla with the 3.6 m telescope, using the ADONIS adaptive optics system. In June 1999, we used a dedicated infrared wave-front sensor, RASOIR. This paper reports on the photometry and astrometry of more than 40 stars. Thanks to additional adaptive optics K-band observations made at CFHT, colour-magnitude diagrams have been constructed to identify individual sources with various types of stars known in this region (AGB, LPV, WC9, WN9/WN10, Ofpe/WN9, YSO). The so-called ``cool slash" stars (Ofpe/WN9) appear to be numerous in the field and an estimation of the extinction coefficient towards the Galactic Center from the colours of these intrinsically weakly absorbed stars leads to A_K=2.7, which is among the lowest published values.

Abstract Copyright: ∼

Journal keyword(s): instrumentation: adaptive optics - Galaxy: center - infrared: stars - extinction - stars: population

Nomenclature: Table 2: [CRG2001b] NNa (Nos 1-44, 26b-26c).

Simbad objects: 69

Full paper

View the references in ADS

Number of rows : 69

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2023	#notes
1	CD-26 5	*	00 07 03.0154517760	-25 36 04.038468300		11.00	9.48			~	3	0
2	RAFGL 490	Y*O	03 27 38.7928952784	+58 47 00.025298088						~	350	0
3	V* V2254 Ori	Or*	05 35 14.11296	-05 22 22.7316						B	311	2
4	NAME Mon R2 IRS 3	Y*O	06 07 47.8	-06 22 55						~	141	0
5	MMB G192.600-00.048	Y*O	06 12 54.0100	+17 59 23.200						~	384	0
6	IC 2162	HII	06 13 04.1	+17 58 44						~	354	2
7	RAFGL 961	Y*O	06 34 37.74144	+04 12 44.1972						O-rich	239	1
8	RAFGL 989	Y*O	06 41 10.1587451112	+09 29 33.635220144		17.4	16.8	18.26	17.28	B2	261	0
9	* phi02 Lup	*	15 23 09.3500506	-36 51 30.552048	3.77	4.39	4.54	4.60	4.74	B4V	129	0
10	HD 152751	SB*	16 55 28.7575690	-08 20 10.787849	11.647	10.593	9.023	7.937	6.565	M3.5Ve	515	1
11	NAME Galactic Center	reg	17 45 39.60213	-29 00 22.0000						~	13889	0
12	GCIRS 6E	WR*	17 45 39.632	-29 00 27.05						Ofpe/WN9	64	0
13	GCIRS 2S	*	17 45 39.69	-29 00 32.5						~	17	0
14	GCIRS 13E	Cl*	17 45 39.73	-29 00 29.7						WN9	113	0
15	GCIRS 34W	WR*	17 45 39.73	-29 00 26.6						Ofpe/WN9	59	0
16	[CRG2001b] 39	*	17 45 39.74	-29 00 33.8						~	1	0
17	GCIRS 13	Em*	17 45 39.76	-29 00 29.8						~	136	0
18	GCIRS 2L	*	17 45 39.778	-29 00 32.11						~	25	0
19	GCIRS 13W	*	17 45 39.78	-29 00 30.5						M0III	20	0
20	GCIRS 3	*	17 45 39.80	-29 00 23.9						~	146	0
21	GCIRS 13E2	WR*	17 45 39.8006	-29 00 29.819						WN8	46	0
22	GCIRS 13N	*	17 45 39.812	-29 00 29.16						~	39	0
23	GCIRS 13E1	s*b	17 45 39.8166	-29 00 29.730						B0/1I	36	0
24	GCIRS 12N	*	17 45 39.86	-29 00 35.7						M0III	57	0
25	GCIRS 7W	WR*	17 45 39.86	-29 00 22.2						WC9	39	0
26	MPE -1.2-07.2	*	17 45 39.90	-29 00 29.3						~	2	0
27	GCIRS 29N	WR*	17 45 39.917	-29 00 26.71						WC9	57	0
28	GCIRS 33SW	*	17 45 39.94	-29 00 31.0						~	9	0
29	MPE -0.6-11.9	*	17 45 39.95	-29 00 34.1						~	2	0
30	GCIRS 7	*	17 45 39.987	-29 00 22.24						M2	366	0
31	GCIRS 16	Cl*	17 45 40.0	-29 00 28						~	350	0
32	GCIRS 20	*	17 45 40.01	-29 00 33.9						M7III	20	0
33	GCIRS 33SE	Em*	17 45 40.02	-29 00 31.0						Ofpe/WN9	24	0
34	NAME Sgr A*	X	17 45 40.03599	-29 00 28.1699						~	4217	3
35	GCIRS 33N	s*b	17 45 40.0381	-29 00 30.302						B0.5/1I	39	0
36	GCIRS 16NW	WR*	17 45 40.0451	-29 00 26.847						Ofpe/WN9	134	0
37	MPE +1.0-07.6	*	17 45 40.07	-29 00 29.7						~	3	0
38	[CRG2001b] 27	*	17 45 40.09	-29 00 29.8						~	1	0
39	MPE +1.4-12.2	*	17 45 40.10	-29 00 34.3						~	4	0
40	GCIRS 16SWW	IR	17 45 40.11	-29 00 29.4						~	5	0
41	GCIRS 16C	WR*	17 45 40.12	-29 00 27.6						Ofpe/WN9	184	1
42	GCIRS 16SW	WR*	17 45 40.1245	-29 00 29.018						Ofpe/WN9	157	0
43	GCIRS 16SE1	WR*	17 45 40.181	-29 00 29.26						WC8/9	46	0
44	GCIRS 16CC	s*b	17 45 40.1939	-29 00 27.532						O9.5/B0.5I	54	0
45	GCIRS 21	WR*	17 45 40.222	-29 00 30.85						WC9	99	0
46	GCIRS 35E	*	17 45 40.23	-29 00 29.1						~	2	0
47	MPE +3.4-08.2	*	17 45 40.25	-29 00 30.3						~	2	0
48	GCIRS 35W	WR*	17 45 40.26	-29 00 29.3						WN5/6	46	0
49	GCIRS 16NE	WR*	17 45 40.26	-29 00 27.2						Ofpe/WN9	150	0
50	GCIRS 7SE	*	17 45 40.2638	-29 00 24.703						~	21	0
51	[CRG2001b] 37	*	17 45 40.28	-29 00 33.2						~	1	0
52	GCIRS 7E	*	17 45 40.38	-29 00 22.9						~	9	0
53	GCIRS 1W	Em*	17 45 40.442	-29 00 27.51						Be?	103	0
54	GCIRS 9	LP*	17 45 40.447	-29 00 34.49						M3III	103	0
55	GCIRS 1C	*	17 45 40.51	-29 00 27.1						~	3	0
56	GCIRS 1NE3	*	17 45 40.53	-29 00 26.9						M0III	4	0
57	GCIRS 10W	*	17 45 40.5305	-29 00 23.001						~	48	0
58	[CRG2001b] 20	*	17 45 40.58	-29 00 28.5						~	1	0
59	GCIRS 1NE	*	17 45 40.626	-29 00 26.55						M3III	20	0
60	MPE -1.4-02.8	*	17 45 43.76	-29 00 26.8						~	2	0
61	GCIRS 29NE	*	17 45 43.77	-29 00 27.4						~	7	0
62	[CRG2001b] 40	*	17 45 44.05	-29 00 35.3						~	1	0
63	RAFGL 2059	Y*O	18 04 53.1586569336	-24 26 41.642012796	19.905	21.910	18.914		14.078	~	143	0
64	W 33a	Y*O	18 14 39.56547	-17 52 02.2260						~	683	0
65	CD-23 14742	Er*	18 49 49.3637762005	-23 50 10.447375350	13.528	12.19	10.43	10.23	7.703	M3.5Ve	371	0
66	RAFGL 2591	Y*O	20 29 24.8230	+40 11 19.590						~	613	0
67	HD 210918	PM*	22 14 38.6528791223	-41 22 53.994495360	7.02	6.88	6.23			G2V	199	0
68	NAME SH 2-140 IRS 1	Y*O	22 19 18.277	+63 18 45.82						~	196	0
69	IRAS 23118+6110	Y*O	23 14 02.09473	+61 27 18.8460						~	369	0

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