GTC Preferred Spectrophotometric Standards

GTC Preferred Spectrophotometric Standards

The following table provides suitable general-purpose spectrophotometric standards for the optical wavelength range.
The link on the name of the object provides more detailed information and a finding chart.

STANDARDS VALID FOR ALL OSIRIS GRISMS

Name	RA/DEC		mag(5556)	Wavelength	Reference
G158-100	00:33:54.5 -12:07:58	J2000	14.8	320-1000 nm	Oke 1990, AJ 99, 1621 Filippenko & Greenstein 1984, PASP 96, 530
G191-B2B	05:05:30.6 +52:49:56	J2000	11.9	320-1000 nm	Oke 1974, ApJ Supp. 27, 21 Massey 1988, ApJ 328, 315 Oke 1990, AJ 99, 1621
GD71	05:52:27.51 +15:53:16.6	J2000	14.5	320-1000 nm	Bohlin et al. 1995, AJ 110, 1316
HILT600	06:45:13.33 +02:08:14.1	J2000	10.4	320-1000 nm	Hamuy et al. 1994, PASP, 106, 566 Hamuy et al. 1992, PASP, 104, 533
GD 140	11:37:05.1 +29:47:58	J2000	12.4	320-1000 nm	Massey 1988, ApJ 328, 315 Oke 1974, ApJ. Supp. 27, 21
GD153	12:57:02.3 +22:01:56.0	J2000	13.3	320-1000 nm	Bohlin et al. 1995, AJ 110, 1316
GD190	15:44:20.0 +18:06.7	J2000	14.7	320-1000 nm	Oke 1974, ApJ. Supp. 27, 21
Ross 640	16:28:25.03 +36:46:15.4	J2000	13.8	320-1000 nm	Oke 1974, ApJ. Supp. 27, 21
G24-9	20:13:55.7 +06:42:45	J2000	15.8	320-1000 nm	Oke 1990, AJ, 99, 1621 Filippenko & Greenstein 1990, PASP 96, 530
GD248	23:26:06.59 +16:00:19.6	J2000	15.1	320-1000 nm	Oke 1990, AJ, 99, 1621 Filippenko & Greenstein 1984, PASP 96, 530

VALID FOR ALL GRISM BUT R300R, R500R, R1000R, R2500I & TF (depending on wavelength)

Name	RA/DEC		mag(5556)	Wavelength	Reference
GD50	03:48:50.06 -00:58:30.4	J2000	14.06	320-920 nm	Oke 1990, AJ 99, 1621
HZ 15	04:40:39.32 +08:40:45.3	J2000	12.6	320-840 nm	Stone 1977, ApJ 218, 767
He 3	06:47:37.99 +37:30:57.0	J2000	12.1	320-940 nm	Oke 1974, ApJ Supp. 27, 21
PG0823+546	08:26:49.4 +54:28:01	J2000	14.4	320-800 nm	Massey 1988, ApJ 328, 315
Feige 34	10:39:36.7 +43:06:10	J2000	11.3	320-900 nm	Stone 1977, ApJ 218, 767 Massey 1988, ApJ 328, 315 Oke 1990, AJ, 99, 1621
HZ 21	12:13:56.6 +32:56:30	J2000	14.7	320-900 nm	Oke 1990, AJ 99, 1621
GRW+70d5824	13:38:51.87 +70:17:08.5	J2000	12.77	320-920 nm	Oke 1990, AJ 99, 1621
BD+33d2642	15:51:59.86 +32:56:54.8	J2000	10.81	320-920 nm	Oke 1990, AJ 99, 1621
PG1708+602	17:09:15.9 +60:10:10	J2000	13.9	320-800 nm	Massey 1988, ApJ 328, 315
Grw+70 8247	19:00:10.25 +70:39:51.2	J2000	13.1	340-920 nm	Oke 1974, ApJ Supp. 27, 21
LDS749B	21:32:15.75 +00:15:13.6	J2000	14.67	320-920 nm	Oke 1990, AJ 99, 1621
Feige 110	23:19:58.39 -05:09:55.8	J2000	11.82	320-920 nm	Oke 1990, AJ 99, 1621