A serendipitous survey for variability amongst the massive stellar population of Westerlund 1

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Table 5:

Summary of the spectroscopic datasets available for B2 and later super-/hypergiants and Wolf-Rayets.
ID	Spect. type	RA, Dec (J2000)	R	I	06/01	06/02	06/03	06/04	03/05	05+07/05	02/06	03/06	2008/9	Notes

W4	F3 Ia⁺	16 47 01.42, -45 50 37.1	11.18	9.15	$\bullet$	#6+#7	#6		LR6+8	LR6+8		$\bullet$		A,P+R
W5 (S)	WNL/BIa⁺	16 46 02.97, -45 50 19.5	14.98	12.48	$\bullet$		#7	R+z	LR8					A
W7	B5 Ia⁺	16 46 03.62, -45 50 14.2	12.73	9.99	$\bullet$	#6+#7	#6+#7			LR6+8				A
W8a	F8 Ia⁺	16 47 04.79, -45 50 24.9	12.64	9.89	$\bullet$	#6+#7				LR6+8		$\bullet$		A
W9	sgB[e]	16 47 04.14, -45 50 31.1	14.47	11.74	$\bullet$	#6+#7	#7	R+z				$\bullet$		A,X,P+R
W12a	F1 Ia⁺	16 47 02.21, -45 50 58.8	13.54	10.42	$\bullet$	#6+#7	#6	R+z				$\bullet$		A,R
W13	WNVL/BIa⁺+OB	16 47 06.45, -45 50 26.0	14.63	12.06	$\bullet$	#6+#7		R+z	LR8	LR6+8	$\bullet$		$\bullet$	X,E, binary
W16a	A5 Ia⁺	16 47 06.61, -45 50 42.1	12.82	9.90	$\bullet$	#6+#7	#6+#7	z	LR6+8		$\bullet$	$\bullet$		A,P
W20	M5 Ia	16 47 04.70, -45 51 23.8	-	-	$\bullet$	#6						$\bullet$		A,R
W26	M5-6 Ia	16 47 05.40, -45 50 36.5	12.63	9.19	$\bullet$	#6	#7				$\bullet$	$\bullet$		R
W32	F5 Ia⁺	16 47 03.67, -45 50 43.5	-	-	$\bullet$	#6+#7						$\bullet$		P
W33	B5 Ia⁺	16 47 04.12, -45 50 48.3	12.78	10.04	$\bullet$	#6+#7		R+z	LR8					A
W42a	B9 Ia⁺	16 47 03.25, -45 50 52.1	-	-	$\bullet$			R+z		LR6+8				A
W44 (L)	WN9	16 46 04.20, -45 51 06.9	15.61	12.52	$\bullet$	#6+#7		R+z	LR8	LR6				A,P
W57a	B4 Ia	16 47 01.35, -45 51 45.6	13.83	11.13		#6+#7		R+z					$\bullet$	A, cand. binary
W70	B3 Ia	16 47 09.36, -45 50 49.6	14.10	11.29	$\bullet$	#6+#7		R+z		LR6	$\bullet$			A
W71	B2.5 Ia	16 47 08.44, -45 50 49.3	14.06	11.16	$\bullet$	#6+#7		R+z					$\bullet$	A, cand. binary
W75	M4 Ia	16 47 08.93, -45 49 58.4	-	-							$\bullet$	$\bullet$		P
W237	M3 Ia	16 47 03.09, -45 52 18.8	12.63	9.19	$\bullet$			z	LR6+8	LR6+8		$\bullet$		A,R
W239(F)	WC9	16 47 05.21, -45 52 25.0	15.39	12.90	$\bullet$								$\bullet$	A,X,P, binary
W241(E)	WC9	16 47 06.06, -45 52 08.3	-	-	$\bullet$				LR8	LR6+8				A,X, cand. binary
W265	F1-5 Ia⁺	16 47 06.26, -45 49 23.7	13.62	10.54	$\bullet$	#6+#7	#7	R+z		LR6+8		$\bullet$	$\bullet$	A,R

Notes. Note the spectral classification of the OB stars are from Negueruela et al. (2010), the YHGs from this work (Sect. 6) and the RSGs from Mengel & Tacconi-Garman (2007). Where appropriate, the Notes column lists stars as Eclipsing or Aperiodic photometric variables (Bonanos 2007), X-ray (Clark et al. 2008) and Point and/or Resolved radio (Dougherty et al. 2010) sources. Finally, the binary status of 5 stars - as determined by Ritchie et al. (2009a) from multiepoch radial velocity spectroscopic data - is presented, noting that insufficent data currently exist to confirm the status of the other stars (but note Sect. 6 for W265).

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