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Spectrophotometric flux standards converted from SPICA format

Figaro includes a large number of standard files supplied by Roderick Johnstone, IoA Cambridge. This section reproduces the document he supplied with those files and which dates from December 1987. The files are kept in the standard Figaro directory FIGARO_PROG_S, which on a normal Starlink system corresponds to directory:

/star/etc/figaro

The files were prepared on a VAX/VMS system, where file names were in upper-case only. Consequently they are listed in upper-case in the note, but following the normal convention the corresponding Unix file names are lower-case. SPICA was a spectroscopic data reduction system, now long-defunct, which was in some ways a precursor of Figaro.

The files listed contain stellar fluxes in milli-Jansky. AB magnitude files have the same name, but with an A before the `.' as in standard Figaro style. I have tried to conform to the systematic naming used by Figaro so files are called after the star with positive and negative signs replaced by P and M respectively. Note that some files have been included more than once under aliases of the star name.

Numerical values of wavelength, flux, bandwidth and order changeover wavelengths have been checked and are believed to be correct. Some errors in the SPICA tables were found. Where existing Figaro files are correct these have not been duplicated.

Note that there are several different magnitude systems which determine the fluxes presented in these tables. These are defined through different calibrations of the primary standard Vega and use different ways of transferring the magnitude system from Vega to the fainter secondary standards. In general the stars listed here are not actual standards but are just good calibrations of non-variable stars. The user is strongly advised to read the paper from which the numbers come (listed at the top of each file) to gain an idea of both the random and the systematic errors in the fluxes as well as the magnitude system from which the fluxes derived.

I am most grateful to Doreen Oliver at RGO who I believe typed in most of the original SPICA files and to Carolin Crawford who gave invaluable help checking the numbers.

Star            File            Coverage        Comments
====            ====            ========        ========

40 Eri B        40ERIB.TAB      3320-9880
AM CVn          HZ29.TAB        3340-8720
BD+25 3941      BDP253941.TAB   3200-8370
BD+28 4211      BDP284211.TAB   3200-8370
BD+33 2642      BDP332642.TAB   3200-8370
BD+40 4032      BDP404032.TAB   3200-8370
BD+82 2015      BDP82015.TAB    3200-8370
EG  5           VMA2.TAB        3260-10640      Used 2nd order values at overlap
EG 11           L870M2.TAB      3210-7220
EG 28           LB1240.TAB      3210-7220
EG 29           LB227.TAB       3210-7220
EG 31           HZ2.TAB         3210-7220
EG 33           40ERIB.TAB      3320-9880
EG 39           HZ7.TAB         3210-7220
EG 42           HZ14.TAB        3230-7420
EG 50           HE3.TAB         3340-9440
EG 54           L745M46AA.TAB   3320-10520      Cosmetic change to lambda_double
EG 63           LDS235B.TAB     3320-8920       Cosmetic change to lambda_double
EG 67           SA29M130.TAB    3210-10200
EG 76           AL970M30.TAB    3180-7040       40A bins in 2nd order
EG 76           BL970M30.TAB    3320-9880       80A bins in 2nd order
EG 77           TON573.TAB      3340-8160
EG 79           R627.TAB        3160-10840
EG 86           HZ21.TAB        3340-9660
EG 91           HZ29.TAB        3340-8720
EG 98           HZ43.TAB        3320-10520
EG 99           W485A.TAB       3320-9880
EG 102          GRWP705824.TAB  3210-10200
EG 119          ROSS640.TAB     3320-10520
EG 129          GRWP708247.TAB  3340-9200
EG 133          L1573M31.TAB    3336-10073
EG 139          W1346.TAB       3210-10640
EG 144          GRWP738031.TAB  3340-9440
EG 148          L1363M3.TAB     3316-10520
EG 149          L930M80.TAB     3320-9240       Cosmetic change to lambda_double and
                                                correct value at 4510
EG 162          L1512M34B.TAB   3210-10040
EG 182          G47M18.TAB      3340-9280
EG 184          GD140.TAB       3160-10560
EG 192          AGD185.TAB      3200-7240       80A bins 2nd order
EG 192          BGD185.TAB      5820-9780       360A bins
EG 247          G191B2B.TAB     3320-10520
Feige 110       F110.TAB        3200-8370       _S: file seems to have wrong
                                                bandwidth and lambda_double
Feige 15        F15.TAB         3200-8370
Feige 25        F25.TAB         3200-8370
Feige 34        F34.TAB         3200-8370
Feige 56        F56.TAB         3200-8370
Feige 92        F92.TAB         3200-8370
Feige 98        F98.TAB         3200-8370
G191B2B         G191B2B.TAB     3320-10520
G47-18          G47M18.TAB      3340-9280
GD 140          GD140.TAB       3160-10560
GD 185          AGD185.TAB      3200-7240       80A bins 2nd order
GD 185          BGD185.TAB      5820-9780       360A bins
GD-248          GDM248.TAB      3300-10000      Not from SPICA
Grw+70 5824     GRWP705824.TAB  3210-10200
Grw+70 8247     GRWP708247.TAB  3340-9200
Grw+73 8031     GRWP738031.TAB  3340-9440
He 3            HE3.TAB         3340-9440
HZ 14           HZ14.TAB        3230-7420
HZ 15           HZ15.TAB        3200-8370
HZ 2            HZ2.TAB         3210-7220
HZ 21           HZ21.TAB        3340-9660
HZ 29           HZ29.TAB        3340-8720
HZ 43           HZ43.TAB        3320-10520
HZ 44           HZ44.TAB        3316-10520      Ambiguity in bandwidth at changeover
                                                to first order
HZ 7            HZ7.TAB         3210-7220
Kopff 27        KOP27.TAB       3200-8370
L1363-3         L1363M3.TAB     3316-10520
L1403-49        TON573.TAB      3340-8160
L1512-34B       L1512M34B.TAB   3210-10040
L1573-31        L1573M31.TAB    3336-10073
L745-46A        L745M46AA.TAB   3320-10520      Cosmetic change to lambda_double
L870-2          L870M2.TAB      3210-7220
L930-80         L930M80.TAB     3320-9240       Cosmetic change to lambda_double and
                                                correct value at 4510
L970-30         AL970M30.TAB    3180-7040       40A bins in 2nd order
L970-30         BL970M30.TAB    3320-9880       80A bins in 2nd order
LB1240          LB1240.TAB      3210-7220
LB227           LB227.TAB       3210-7220
LDS235B         LDS235B.TAB     3320-8920       Cosmetic change to lambda_double
R627            R627.TAB        3160-10840
Ross 640        ROSS640.TAB     3320-10520
SA29-130        SA29M130.TAB    3210-10200
Ton573          TON573.TAB      3340-8160
VMa 2           VMA2.TAB        3260-10640      Used 2nd order values at overlap
W1346           W1346.TAB       3210-10640
W485A           W485A.TAB       3320-9880



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Next: HST and new Oke spectrophotometric standard star flux tables
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FIGARO A general data reduction system
Starlink User Note 86
Keith Shortridge, Horst Meyerdierks,
Malcolm Currie, Martin Clayton, Jon Lockley,
Anne Charles, Clive Davenhall,
Mark Taylor, Tim Ash, Tim Wilkins, Dave Axon,
John Palmer, Anthony Holloway and
Vito Graffagnino
2004 February 17
E-mail:starlink@jiscmail.ac.uk

Copyright © 2013 Science and Technology Facilities Council