I/324 The Initial Gaia Source List (IGSL) (Smart, 2013)
The Initial Gaia Source List (IGSL)
Smart R.L., Nicastro L.
=2014A&A...570A..87S 2014A&A...570A..87S
=2013yCat.1324....0S 2013yCat.1324....0S
ADC_Keywords: Positional data ; Proper motions ; Photometry, photographic
Cross identifications
Keywords: catalogs - surveys - astrometry
Mission_Name: Gaia
Abstract:
The Initial Gaia Source List will be the starting point for the Gaia
Initial Data Treatment. The Attitude Star Catalog will be used by the
first iteration of the on-ground attitude reconstruction.
Description:
The IGSL is a compilation catalog produced for the Gaia mission. We
have combined data from the following catalogs or datasets to produce
a homogenous list of positons, proper motions, photometry in a blue
and red band and estimates of the magnitudes in the Gaia G and G_RVS
bands.
Included Catalogs: Tycho2, LQRF, UCAC4, SDSS-DR9, PPMXL, GSC23, GEPC,
OGLE, Sky2000, 2MASS. Note that in compiling the various entries we
did not consider the individual flags. Overall, we think this catalog
is reliable but there will be errors, mismatches and duplicates. The
user should use this catalog with that in mind, it is fine for
statistical studies that has some way to remove obviously incorrect
entries but it should only be used with care for individual objects.
The source catalogs used to produce the IGSL are:
* The Gaia Ecliptic Pole Catalog, version 3.0 (GEPC)
Altmann & Bastian 2009, "Ecliptic Poles Catalogue Version 1.1"
ESA Document GAIA-C3-TN-ARI-MA-002
URL http://www.rssd.esa.int/llink/livelink/open/2885828
* GSC2.3: GSC2 version 2.3, Lasker et al. 2008AJ....136..735L 2008AJ....136..735L (I/305)
* an excerpt of the 4th version of the Gaia Initial QSO Catalog (GIQC)
as compiled by the GWP-S-335-13000, formed by Alexandre H. Andrei,
Christophe Barache, Dario N. da Silva Neto, Francois Taris, Geraldine
Bourda, Jean-Francois Le Campion, Jean Souchay, J.J. Pereira Osorio,
Julio I. Bueno de Camargo, Marcelo Assafin, Roberto Vieira Martins,
Sebastien Bouquillon, Sebastien Lambert, Sonia Anton, Patrick Charlot
* OGLE: Optical Gravitational Lensing Experiment version III
(Szymaski et al., 2011, Cat. J/AcA/61/83)
* PPMXL: Positions and Proper Motions "Extra Large" Catalog,
Roeser et al. (2010, Cat. I/317)
* SDSS: Sloan Digital Sky Survey data release 9, Cat. V/139
* UCAC4: Zacharias et al., 2012, Cat. I/322
* Tycho-2, Hoeg et al., 2000, Cat. I/259
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
igsl3.sam 324 1000 Sample of the IGSL3 data release
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Byte-by-byte Description of file: igsl3.sam
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Bytes Format Units Label Explanations
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1- 19 I19 --- sourceId Source identifier
21- 30 F10.6 deg RAJ2000 Right Ascension at J2000 (alpha)
32- 41 F10.6 deg DEJ2000 Declination at J2000 (delta)
43- 48 F6.3 mag magBJ ? GSC23 B mag measure
50- 55 F6.3 mag magRF ? GSC23 R mag measure
57- 62 F6.3 mag magG ? G mag estimate
64- 69 F6.3 mag magGrvs ? Grvs mag estimate
71- 76 F6.3 mag e_magBJ ? Standard error on magBJ
78- 83 F6.3 mag e_magRF ? Standard error on magRF
85- 90 F6.3 mag e_magG ? Standard error on magG
92- 97 F6.3 mag e_magGrvs ? Standard error on magGrvs
99-103 F5.3 arcsec e_RAJ2000 Standard error on
RAJ2000*cos(DEJ2000)
105-109 F5.3 arcsec e_DEJ2000 Standard error on DEJ2000
111-119 F9.4 yr alphaEpoch Mean Epoch of Right Ascension
121-129 F9.4 yr deltaEpoch Mean Epoch of Declination
131-132 I2 --- sourcePosition Position source (1)
134-140 F7.1 mas/yr pmRA Proper motion in RA (muAlpha)
142-148 F7.1 mas/yr pmDE Proper motion in DEC (muDelta)
150-155 F6.1 mas/yr e_pmRA ? Standard error on
pmRA (e_muAlpha)
157-162 F6.1 mas/yr e_pmDE ? Standard error on
pmDE (e_muDelta)
164-165 I2 --- sourceMu Proper motion source (1)
167-168 I2 --- sourceMagBJ BJ magnitude source (2)
170-171 I2 --- sourceMagRF RF magnitude source (2)
173-174 I2 --- sourceMagG G magnitude source (2)
176-177 I2 --- sourceMagGrvs Grvs magnitude source (2)
179-179 I1 --- classification ?=-1 Classification
0=star, 1=nonstars
181-182 I2 --- sourceClassification Classification source (1)
184-184 I1 --- toggleASC ?=-1 Attitude Star Catalog
Toggle (3)
186-195 A10 --- idGSC23 ? GSC23 identifier
197-215 I19 --- idSDSS ? SDSS DR9 identifier
217-225 I9 --- idUCAC ? UCAC4 identifier
227-232 I6 --- idLQRF ? LQRF identifier (4)
234-246 I13 --- idTYCHO ? Tycho-2 identifier (5)
248-253 I6 --- idHIP ? Hipparcos number
255-273 I19 --- idPPMXL ? PPMXL identifier
275-287 I13 --- idOGLE ? OGLE identifier (6)
289-304 A16 --- idTMASS ? 2MASS identifier (7)
306-324 A19 --- idGEPC ? GEPC identifier
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Note (1): Position, proper motion and classification source catalogs
are identified by a number following this convention:
1 = 2008AJ....136..735L 2008AJ....136..735L Guide Star Catalog
2 = 2009ApJS..182..543A 2009ApJS..182..543A Sloan Digital Sky Survey
3 = 2010AJ....139.2184Z 2010AJ....139.2184Z U.S. Naval Observatory CCD Astrograph Catalog
4 = 2009A&A...505..385A 2009A&A...505..385A Large Quasar Reference Frame
5 = 2000A&A...355L..27H 2000A&A...355L..27H Tycho-2
18 = 2006AJ....131.1163S 2006AJ....131.1163S Two Micron Sky Survey Point Source Catalog
49 = 2010AJ....139.2440R 2010AJ....139.2440R Large PPM catalog
66 = 2010AcA....60..295S 2010AcA....60..295S Optical Gravitational Lensing Experiment
67 = GEPC30 Gaia Ecliptic Pole Catalog
68 = mmfd.gsfc.nasa.gov/dist/generalProducts/attitude/ATT_SKYMAP.html
Note (2): The source of the magnitudes are given based on the
following codes:
01: RF/BJ = value from GSC23, sigma = 0.3
02: RF/BJ = value from PPMXL, sigma = 0.4
10: R_F = V-0.0478-0.5739(B-V)-0.0938(B-V)2-0.4606(B-V)3
+0.8419(B-V)4-0.3472(B-V)5, sigma= sigma_{B},
\rmNotevalidonlyfor(B-V)<2.5.
11: R_F = R-0.0066-0.0563(V-R)-0.2505(V-R)2+0.3912(V-R)3
-0.0707(V-R)^4, sigma= sigma_{V}
12: R_F = V-0.0137-0.5573(V-I), sigma=(, sigma_{V}^2+,
sigma_{I}2){1/2}
13: B_J = V+0.0036+0.8768(B-V)-0.0594(B-V)^2,
sigma= sigma_{B},\rmNotevalidonlyfor(B-V)<2.5.
14: B_J = R-0.0480+2.4850(V-R)-0.8760(V-r)2+2.9117(V-r)3
-3.4144(V-r)4+1.11850(V-r)5, sigma= sigma_{V}
15: B_J = V+0.0442+0.7851(V-I), sigma=(, sigma_{V}^2+,
sigma_{I}2){1/2}
16: R_F = VT-0.0478-0.578(BT-VT)-0.0677(BT-V_T)^2
-0.2828(BT-VT)3+0.4395(BT-VT)4+0.1541(BT-VT)^5,
sigma= sigma{VT},\rmNotevalidonlyfor(BT-VT)<2.5.
17: B_J = VT-0.0036+0.655(BT-VT)-0.0429(BT-V_T)^2,
sigma= sigma{BT},\rmNotevalidonlyfor(BT-VT)<2.5.
18: R_F = r+0.1784+0.1187(g-r+0.259)+0.0195(g-r+0.259),
sigma=(0.04+, sigma_r2){0.5}
19: B_J = g+0.0880+0.2434(g-r+0.259)+0.0439(g-r+0.259),
sigma=(0.04+, sigma_g2){0.5}
20: B_J = Vp+0.3608+1.40985(Vp-R_F), sigma=0.5
21: B_J = RF+0.3841+1.97440(RF-I_N), sigma=0.5
28: G = VT-0.0246-0.3354(BT-VT)-0.02558(BT-V_T)^2
-0.05153(BT-VT)^3, sigma=(0.2916+, sigma{VT}^2+,
sigma{BT}2){1/2}
29: G_{RVS} = VT-0.1313-1.3422(BT-VT)-0.09316(BT-V_T)^2
-0.0663(BT-VT)^3, sigma=(0.2916+, sigma{VT}^2+,
sigma{BT}2){1/2}
30: G = g-0.1128-0.5264(g-i)-0.0869(g-i)2+0.0025(g-i)3,
sigma=(0.08^2+, sigma_g^2+, sigma_i2){1/2}
31: G_{RVS} = g-0.4994-1.2026(g-i)-0.0202(g-i)2+0.0021(g-i)3,
sigma=(0.11^2+, sigma_g^2+, sigma_i2){1/2}
32: G = g-0.089-0.8543(g-r)-0.1281(g-r)2+0.0471(g-r)3,
sigma=(0.1681+, sigma_g^2+, sigma_r2){1/2}
33: G_{RVS} = g-0.4332-1.8906(g-r)-0.0231(g-r)2-0.0329(g-r)3,
sigma=(0.2401+, sigma_g^2+, sigma_r2){1/2}
41: B_J = J+4.9816-0.38945670(J-K), sigma=0.5
42: R_F = J+2.6997-0.46257863(J-K), sigma=0.5
50: G = RF-0.0158+0..2915(BJ-RF)-0.0347(BJ-R_F)^2
-0.0301(BJ-RF)^3, sigma=0.4
51: G_{RVS} = RF-0.0974-0.4830(BJ-RF)-0.0184(BJ-R_F)^2
-0.0178(BJ-RF)^3, sigma=0.5
52: G = V-0.0247-0.2888(B-V)-0.0353(B-V)2-0.0839(B-V)3,
sigma=0.6
54: G = V-0.0208-0.1004(V-I)-0.1593(V-I)2+0.0083(V-I)3,
sigma=(, sigma_V^2+, sigma_I2){1/2}
55: G_{RVS} = V-0.1333-1.4654(B-V)-0.1075(B-V)2-0.0768(B-V)3,
sigma=0.6
57: G_{RVS} = V-0.0501-1.1667(V-I)-0.0052(V-I)2+0.0011(V-I)3,
sigma=(, sigma_V^2+, sigma_I2){1/2}
80: G = value from GEPC
81: G_{RVS} = value from GEPC
Note (3): The Attitude Star Catalog Toggle is 1 if it should be
considered a reliable ASC object or 0 if not. Based on the
requirements discussed in the related publication.
Note (4): This identifier refers to a custom version of LQRF used internally
in the Gaia team and which was not published
Note (5): Tycho-2 identifier (idTYCHO): These are the IDs as published in
Tycho2. TYCHO-2 objects are identified by 3 numbers (TYC1,TYC2 and
TYC3) and we have combined these into one complete number given by
(TYC1*1000000.0d0)+(TYC2*10.0d0)+(TYC3*1.0d0). Due to an error in
the inclusion of HIPPARCOS stars some HIPPARCOS objects have
a TYCHO2 identifier of 9999999000000+HIPARCOS number. For the most
part these should be used (when idHIP is null) but some times they are
included as they were HIPPARCOS targets not found in Tycho-2.
Note (6): 2MASS identifier (idTMASS): 2MASS provides indentifiers in a IAU
standardized format as 2MASS JHHMMSS.S+DDMMSS.S . These are
coded here as +HHMMSSSDDMMSSS.
Note (7): OGLE identifier (idOGLE): The OGLE ID is given by a combination of A
region of sky identifier (RI) equal to 10, 11, 12, 13, 14
corresponding to map names blg, car, cen, lmc, mus. So the ID here
is defined as the file running number (NNN.N), the running number in
the file (RN) combined as: long(string(RI)+string(NNN.N *
10000))+RN.
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History:
Data received from Richard Smart
Acknowledgements:
Richard Smart [OATo/INAF, Italy]
(End) Arnaud Siebert, Thomas Boch [CDS] 15-Nov-2013