XSHOOTER spectrophotometric standard stars

We have an observatory dedicated queue which contains the IFU and SLT stare mode OB for each of the standard star listed below. The used slit width is the 5 arcsec one for the 3 arms. The selected readout mode is 100kH,1x1,high in both the UVB and VIS arms. The user who is interested in specphot observations with different slit width and readout modes, or with a different strategy than those adopted in the instrument calibration plan (see User Manual), should request the necessary telescope time during phase 1 and provide the relevant OB during phase 2.
The current fully flux-calibrated available spectrophotometric standard stars are marked with a blue background color. Note that BD+17 4708 should not be observed anymore due to its binarity.

Star Name	SpcT	V	Coordinates (J2000): RA DEC	Proper Motion (mas/yr)	SIMBAD link
EG 131	DAw	12.28	19 20 34.9269 -07 40 00.050	-54.81 -160.23	EG131/NSV11920
LTT7987	DA	12.18	20 10 56.8453 -30 13 06.639	-345.60 -250.49	LTT7987/GJ2147
Feige 110	DA	11.83	23 19 58.3977 -05 09 56.207	-11.45 -4.93	Feige110/NSV14503
EG 274	DA	11.03	16 23 33.8367 -39 13 46.163	75.52 0.05	EG274/NSV7674
CD-32 9927	A0	10.33	14 11 46.3242 -33 03 14.304	-7.10 6.40	CD-32 9927
LTT 4364	DC	11.50	11 45 42.9205 -64 50 29.459	2665.25 -346.19	LTT4364/GJ440
LTT 4816	DA, zz	13.96	12 38 49.93 -49 48 01.2	-475 -121	LTT4816/V* V886 Cen
LTT 3218	DAs	12.00	08 41 32.56 -32 56 34.9	-984 1262	LTT3218/GJ318
LTT 1020	G:	11.54	01 54 50.24 -27 28 35.5	312 -234	LTT1020/G274-120
L 745-46 A
Hiltner 600	B3	10.37	06 45 13.3706 +02 08 14.697	1.20 -3.30	Hilt600/HD289902
EG 21	DA	11.1	03 10 31.0229 -68 36 03.389	41.87 -104.14	EG21/NSV1075
GD71	DAw	13.06	05 52 27.61 +15 53 13.8	85 -174	GD71
GD153	DAw	13.40	12 57 02.34 +22 01 52.7	-46 -204	GD153
BD+17 4708	sdF8	9.454	22 11 31.3737 +18 05 34.174	511.55 59.92	BD+17 4708

GD71, GD153 and BD+17 4708 are three HST fundamental flux standard. By clicking on their star name you can retrieve the corresponding flux table from the STScI Calibration Data Base .

The flux tables (extended to the NIR K band) for the remaining spectrophotometric standard stars is in preparation and will be made available at the soonest.

When using these fluxes please refer to the publications:

Vernet, Kerber, Mainieri et al. 2010, Highlights of Astronomy, Volume 15, p. 535-535 and Hamuy et al. 1994, PASP, 106, 566.