Observations and data reduction

The journal of observations, given in Table , summarizes the spectroscopic and imaging observations carried out with different telescopes and instrumental setups, and those retrieved from the HST archives.

 

Table: Journal of observations

telescope - PA ()	sampling3#3	wavelength (Å)	t 36#36 (s)	airmass
WHT - 138	0.36	4757-5141	1800	1.32
WHT - 138	0.36	6493-6881	1800	1.36
WHT - 138	0.36	8506-8882	3600	1.34
WHT - 84	0.36	4757-5141	1800	1.27
WHT - 84	0.36	6493-6881	1800	1.26
WHT - 84	0.36	8506-8882	3600	1.26
WHT - 38	0.36	4757-5141	1800	1.27
WHT - 38	0.36	6493-6881	1800	1.26
WHT - 38	0.36	8506-8882	3600	1.26
NOT	0.18	B	3000	1.36
NOT	0.18	I	660	1.51
NOT+ARNICA	0.51	J	1760 (440)	1.25
NOT+ARNICA	0.51	Ks	3520 (880)	1.5
3.5m CAHA	0.32	K	300	1.22
HST - WFPC2	0.046	V (547M)	300
HST - NICMOS2	0.075	J (110W)	128
HST - NICMOS2	0.075	H (160W)	128

3#3 Spatial sampling in arcsec per pixel. The linear dispersion is 0.39 Å pixel^-1 for all the spectroscopic observations.