VII/270 SDSS quasar catalog: tenth data release (Paris+, 2014)
The Sloan Digital Sky Survey: tenth data release.
Paris I., Petitjean P., Aubourg E., Ross N.P., Myers A.D., Strblyanska A.,
Bailey S., Hall P.B., Strauss M.A., Anderson S.F., Bizyaev D., Borde A.,
Brinkmann J., Bovy J., Brandt W.N., Brewington H., Browstein J.R.,
Cook B.A., Ebelke G., Fan X., Filiz Ak N., Finley H., Font-Ribera A.,
Ge J., Hamann F., Ho S., Jiang L., Kinemuchi K., Malanushenko E.,
Malanushenko V., Marchante M., McGreer I.D., McMahon R.G., Miralda-Escude
J., Muna D., Noterdaeme P., Oravetz D., Palanque-Delabrouille N., Pan K.,
Perez-Fournon I., Pieri M., Riffel R., Schlegel D.J., Schneider D.P.,
Simmons A., Viel M., Weaver B.A., Wood-Vasey W.M., Yeche C., York D.G.
<Astron. Astrophys. 563, A54 (2014)>
=2014A&A...563A..54P 2014A&A...563A..54P
=2014yCat.7270....0P 2014yCat.7270....0P
ADC_Keywords: Surveys ; QSOs ; Active gal. nuclei ; Spectroscopy
Keywords: catalogs - surveys - quasars: general
Abstract:
We present the Data Release 10 Quasar (DR10Q) catalog from the Baryon
Oscillation Spectroscopic Survey (BOSS) of the Sloan Digital Sky
Survey III. The catalog includes all BOSS objects that were targeted
as quasar candidates during the first 2.5 years of the survey and that
are confirmed as quasars via visual inspection of the spectra, have
luminosities Mi[z=2]←20.5 (in a LCDM cosmology with H0=70km/s/Mpc,
Om=0.3, and Ol=0.7), and either display at least one emission line
with a full width at half maximum (FWHM) larger than 500km/s or, if
not, have interesting/complex absorption features. The catalog also
includes known quasars (mostly from SDSS-I and II) that were
reobserved by BOSS. The catalog contains 166,583 quasars (74,454 are
new discoveries since SDSS-DR9) detected over 6,373deg2 with robust
identification and redshift measured by a combination of principal
component eigenspectra. The number of quasars with z>2.15 (117,668) is
∼5 times greater than the number of z>2.15 quasars known prior to
BOSS. Redshifts and FWHMs are provided for the strongest emission
lines (CIV, CIII, MgII). The catalog identifies 16,461 broad
absorption line quasars and gives their characteristics. For each
object, the catalog presents five-band (u, g, r, i, z) CCD-based
photometry with typical accuracy of 0.03mag and information on the
optical morphology and selection method. The catalog also contains
X-ray, ultraviolet, near- infrared, and radio emission properties of
the quasars, when available, from other large-area surveys. The
calibrated digital spectra cover the wavelength region
3,600-10,500Å at a spectral resolution in the range 1,300<R<2,500;
the spectra can be retrieved from the SDSS Catalog Archive Server. We
also provide a supplemental list of an additional 2,376 quasars that
have been identified among the galaxy targets of the SDSS-III/BOSS.
Description:
The SDSS-DR10 Quasar Catalog presents photometric and spectroscopic
properties of 166,583 quasars observed by the SDSS-III/BOSS survey. We
provide the catalog in the form of both a fits and an ascii file. We
also provide a supplemental list containing 2,376 quasars with exactly
the same format as the main catalog.
The superset from which we derive the SDSS-DR10 quasar catalog is also
provided in ascii and fits files.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
dr10q.dat 1623 166583 Main DR10Q catalog
dr10q.fits 2880 64227 Main DR10Q catalog (FITS)
dr10qsup.dat 1623 2376 Supplementary list from DR10
supdr10q.fits 2880 966 Supplementary list from DR10 (FITS)
setdr10q.dat 517 321729 Superset used to derive DR10Q
setdr10q.fits 2880 27264 Superset used to derive DR10Q (FITS)
--------------------------------------------------------------------------------
See also:
VII/260 : The SDSS-DR7 quasar catalog (Schneider+, 2010)
VII/269 : SDSS-III DR9 Quasar catalog (Paris+, 2012)
J/A+A/547/L1 : SDSS-III DR9 DLA catalogue (Noterdaeme+, 2012)
http://www.sdss3.org : SDSS-III Home Page
Byte-by-byte Description of file: dr10q.dat dr10qsup.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 18 A18 --- SDSS SDSS-DR10 designation (HHMMSS.ss+DDMMSS.s)
20- 29 F10.6 deg RAdeg Right ascension (J2000.0)
31- 40 F10.6 deg DEdeg Declination (J2000.0)
42- 50 I9 --- THINGID Unique identifier
52- 55 I4 --- Plate SDSS plate number
57- 61 I5 --- MJD SDSS Spectroscopic MJD
63- 66 I4 --- Fiber SDSS fiber number
68- 76 F9.4 --- z.v Visual inspection redshift
78- 86 F9.4 --- z.b SDSS Pipeline redshift estimate
88- 96 F9.4 --- e_z.b ?=-1 Error on SDSS pipeline redshift
98- 100 I3 --- f_z.b [0/320] zwarning flag (G2)
102- 110 F9.4 --- z.PCA PCA redshift estimate (G3)
112- 120 F9.4 --- e_z.PCA ?=-1 Error on PCA redshift (G3)
122- 130 F9.4 --- qCont PCA continuum quality estimator (G3)
132- 140 F9.4 --- zCIV ?=-1 CIV redshift
142- 150 F9.4 --- zCIII CIII complex redshift
152- 160 F9.4 --- zMgII MgII redshift
162- 163 I2 --- Morph [-1/1] SDSS morphology flag
(0=point, 1=extended
165- 178 I14 --- Btarg1 ?=0 BOSS target selection flag of the
main survey (G4)
180- 198 I19 --- Atarg1 ?=0 Ancillary target selection flag 1 (G4)
200- 202 I3 --- Atarg2 ?=0 Ancillary target selection flag 1 (G4)
204 I1 --- f7 [0/1] 1=quasar in SDSS-DR7 (Cat. VII/260)
206- 210 I5 --- Plate7 ?=-1 SDSS-DR7 plate number
212- 217 I6 --- MJD7 ?=-1 SDSS-DR7 spectroscopic MJD
219- 222 I4 --- Fiber7 ?=-1 SDSS-DR7 fiber number
224 I1 --- US [0/2] Uniform sample flag (G6)
226- 234 F9.4 --- alphanu ?=500 Spectral index
236- 244 F9.4 --- SNRSpec ?=0 S/N over the whole spectrum
246- 254 F9.4 --- SNR1700 ?=0 S/N near 170nm
256- 264 F9.4 --- SNR3000 ?=0 S/N near 300nm
266- 274 F9.4 --- SNR5150 ?=0 S/N near 515nm
276- 285 F10.4 km/s FW(CIV) ?=-1 FWHM of CIV emission line
287- 296 F10.4 km/s HW(CIV)b ?=-1 Blue HWHM of CIV emission line
298- 307 F10.4 km/s HW(CIV)r ?=-1 Red HWHM of CIV emission line
309- 317 F9.4 --- A(CIV) ?=-1 Amplitude of CIV emission line
319- 328 F10.4 0.1nm W(CIV) ?=-1 Rest equivalent width of CIV emission
330- 339 F10.4 0.1nm e_W(CIV) ?=-1 Error on the rest equivalent
341- 350 F10.4 km/s FW(CIII) ?=-1 FWHM of CIII complex
352- 361 F10.4 km/s HW(CIII)b ?=-1 blue HWHM of CIII complex
363- 372 F10.4 km/s HW(CIII)r ?=-1 red HWHM of CIV complex
374- 382 F9.4 --- A(CIII) ?=-1 amplitude of CIV complex
384- 392 F9.4 0.1nm W(CIII) ?=-1 Rest equivalent width of CIII complex
394- 402 F9.4 0.1nm e_W(CIII) ?=-1 Error on rest EW of CIII complex
404- 413 F10.4 km/s FW(MgII) ?=-1 FWHM of MgII emission line
415- 423 F9.4 km/s HW(MgII)b ?=-1 blue HWHM of MgII emission line
425- 434 F10.4 km/s HW(MgII)r ?=-1 red HWHM of MgII emission line
436- 444 F9.4 --- A(MgII) ?=-1 amplitude of MgII emission line
446- 454 F9.4 0.1nm W(MgII) ?=-1 Rest equivalent width of MgII
emission
456- 464 F9.4 0.1nm e_W(MgII) ?=-1 Error on rest EW of MgII emission
466 I1 --- BAL-VI BAL flag from visual inspection
468- 477 F10.4 km/s BI(CIVt) ?=-1 BI of CIV trough
479- 488 F10.4 km/s e_BI(CIVt) ?=-1 Error on BI of CIV trough
490- 499 F10.4 km/s AI(CIVt) ?=-1 AI of CIV trough
501- 510 F10.4 km/s e_AI(CIVt) ?=-1 Error on AI of CIV trough
512- 521 F10.4 --- Chi2AIt ?=-1 Chi2 trough for AI
523 I1 --- N2t [0/5] Number of CIV troughs > 2000km/s
525- 534 F10.4 km/s Vmin2t ?=0 Min velocity of CIV troughs (N2t)
536- 545 F10.4 km/s Vmax2t ?=0 Max velocity of CIV troughs (N2t)
548- 549 I2 --- N.45t [-1/17] Number of CIV troughs > 450km/s
551- 560 F10.4 km/s Vmin.45t ?=0 Min velocity of CIV troughs (N.45t)
562- 571 F10.4 km/s Vmax.45t ?=0 Max velocity of CIV troughs (N.45t)
573- 582 F10.4 0.1nm W(SiIVt) ?=0 Rest equivalent width of SiIV troughs
584- 592 F9.4 0.1nm W(CIVt) ?=0 Rest equivalent width of CIV troughs
594- 602 F9.4 0.1nm W(AlIIIt) ?=0 Rest equivalent width of AlIII troughs
604- 607 I4 --- Run SDSS imaging run number
609- 613 I5 --- Ph-MJD MJD of imaging observation
615- 617 I3 --- Rerun [301]?=0 SDSS photometric processing
rerun number
619 I1 --- Colcam SDSS camera column number
621- 623 I3 --- Field SDSS field number
625- 643 A19 --- objID SDSS Object identification
645- 656 E12.6 3.63uJy Fu ?=0 PSF flux in u band in nmaggies (G1)
658- 669 E12.6 3.63uJy Fg ?=0 PSF flux in g band in nmaggies (G1)
671- 682 E12.6 3.63uJy Fr ?=0 PSF flux in r band in nmaggies (G1)
684- 695 E12.6 3.63uJy Fi ?=0 PSF flux in i band in nmaggies (G1)
697- 708 E12.6 3.63uJy Fz ?=0 PSF flux in z band in nmaggies (G1)
710- 721 E12.6 3.63uJy IVFu ?=0 Inverse variance of PSF flux in u band
in nmaggies (G1)
723- 734 E12.6 3.63uJy IVFg ?=0 Inverse variance of PSF flux in g band
in nmaggies (G1)
736- 747 E12.6 3.63uJy IVFr ?=0 Inverse variance of PSF flux in r band
in nmaggies (G1)
749- 760 E12.6 3.63uJy IVFi ?=0 Inverse variance of PSF flux in i band
in nmaggies (G1)
762- 773 E12.6 3.63uJy IVFz ?=0 Inverse variance of PSF flux in z band
in nmaggies (G1)
775- 786 E12.6 mag umag ?=-9999 PSF magnitude in u band
788- 799 E12.6 mag gmag ?=-9999 PSF magnitude in g band
801- 812 E12.6 mag rmag ?=-9999 PSF magnitude in r band
814- 825 E12.6 mag imag ?=-9999 PSF magnitude in i band
827- 838 E12.6 mag zmag ?=-9999 PSF magnitude in z band
840- 851 E12.6 mag e_umag ?=-9999 Error on PSF magnitude in u band
853- 864 E12.6 mag e_gmag ?=-9999 Error on PSF magnitude in g band
866- 877 E12.6 mag e_rmag ?=-9999 Error on PSF magnitude in r band
879- 890 E12.6 mag e_imag ?=-9999 Error on PSF magnitude in i band
892- 903 E12.6 mag e_zmag ?=-9999 Error on PSF magnitude in z band
905- 916 E12.6 3.63uJy Fut ?=-1 Target selection PSF flux in u band
in nmaggies (G1)
918- 929 E12.6 3.63uJy Fgt ?=-1 Target selection PSF flux in g band
in nmaggies (G1)
931- 942 E12.6 3.63uJy Frt ?=-1 Target selection PSF flux in r band
in nmaggies (G1)
944- 955 E12.6 3.63uJy Fit ?=-1 Target selection PSF flux in i band
in nmaggies (G1)
957- 968 E12.6 3.63uJy Fzt ?=-1 Target selection PSF flux in z band
in nmaggies (G1)
970- 980 F11.6 --- iMAG ?=0 Absolute magnitude in i-band (G5)
982- 991 F10.6 --- D(g-i) ?=-99 Photometric spectral index (G7)
993-1000 F8.6 mag Extu ?=0 Galactic extinction in u (G8)
1002-1009 F8.6 mag Extg ?=0 Galactic extinction in g (G8)
1011-1018 F8.6 mag Extr ?=0 Galactic extinction in r (G8)
1020-1027 F8.6 mag Exti ?=0 Galactic extinction in i (G8)
1029-1036 F8.6 mag Extz ?=0 Galactic extinction in z (G8)
1038-1045 F8.6 mag ExtuR ?=0 Recalculated Galactic extinction
in u (G9)
1047-1054 F8.6 mag ExtgR ?=0 Recalculated Galactic extinction
in g (G9)
1056-1063 F8.6 mag ExtrR ?=0 Recalculated Galactic extinction
in r (G9)
1065-1072 F8.6 mag ExtiR ?=0 Recalculated Galactic extinction
in i (G9)
1074-1081 F8.6 mag ExtzR ?=0 Recalculated Galactic extinction
in z (G9)
1083-1091 F9.4 [cm-2] logNHI ?=0 logarithm of Galactic HI column
density
1093-1101 F9.4 [ct/s] logXct ?=0 log RASS full band count rate)
1103-1111 F9.4 --- SNR(X) ?=0 S/N of RASS count rate
1113-1121 F9.4 arcsec sepX ?=0 SDSS-RASS separation
1123-1124 I2 --- NDetX ?=0 Number of detections in XMM
1126-1134 F9.4 mW/m2 F0.5-2 ?=0 XMM-Newton soft (0.5-2keV) Xray flux
1136-1144 F9.4 mW/m2 F2-12 ?=0 XMM-Newton hard (2-12keV) Xray flux
1146-1157 E12.7 10-7W L0.5-2 ?=0 Soft Xray luminosity
1159-1170 E12.7 10-7W L2-12 ?=0 Hard Xray luminosity
1172-1173 I2 --- f_L2-12 [-1/0]? Flag for upper limit of hard
Xray flux
1175-1183 F9.4 arcsec sepXM ?=0 SDSS-XMM-Newton separation
1185 I1 --- GALEX [0/1] GALEX matching flag
1187-1195 F9.4 3.63uJy FFUV ?=0 FUV flux (GALEX) in nmaggies (G1)
1197-1206 F10.4 --- IVFUV ?=0 Inverse variance of FUV flux
1208-1216 F9.4 3.63uJy FNUV ?=0 NUV flux (GALEX) in nmaggies (G1)
1218-1227 F10.4 --- IVNUV ?=0 Inverse variance of NUV flux
1229-1237 F9.4 mag Jmag ?=0 J magnitude (2MASS)
1239-1247 F9.4 mag e_Jmag [-1/1]?=0 Error on J magnitude (2MASS),
-1 when no value
1249-1257 F9.4 --- SNR(J) ?=0 J-band S/N (2MASS),
-1 when no value
1259 I1 --- f_Jmag [0/6]?=0 J-band photometry flag (2MASS)
1261-1269 F9.4 mag Hmag ?=0 H magnitude (2MASS)
1271-1279 F9.4 mag e_Hmag [-1/1]?=0 Error on H magnitude (2MASS),
-1 when no value
1281-1289 F9.4 --- SNR(R) ?=0 H-band S/N (2MASS),
-1 when no value
1291 I1 --- f_Hmag [0/6]?=0 H-band photometry flag (2MASS)
1293-1301 F9.4 mag Kmag ?=0 K magnitude (2MASS)
1303-1311 F9.4 mag e_Kmag [-1/1]?=0 Error on K magnitude (2MASS),
-1 when no value
1313-1321 F9.4 --- SNR(K) ?=0 K-band S/N (2MASS),
-1 when no value
1323 I1 --- f_Kmag [0/6]?=0 K-band photometry flag (2MASS)
1325-1333 F9.4 arcsec Sep2 ?=-1 SDSS-2MASS separation
1335-1343 F9.4 mag W1mag ?=-1 W1 magnitude (WISE)
1345-1353 F9.4 mag e_W1mag ?=-1 Error on W1 magnitude (WISE)
1355-1363 F9.4 --- W1SNR ?=-1 W1-band S/N (WISE)
1365-1373 F9.4 --- W1chi2 ?=-1 chi2 in W1-band (WISE)
1375-1383 F9.4 mag W2mag ?=-1 W2 magnitude (WISE)
1385-1393 F9.4 mag e_W2mag ?=-1 Error on W2 magnitude (WISE)
1395-1403 F9.4 --- W2SNR ?=-1 W2-band S/N (WISE)
1405-1413 F9.4 --- W2chi2 ?=-1 chi2 in W2-band (WISE)
1415-1423 F9.4 mag W3mag ?=-1 W3 magnitude (WISE)
1425-1433 F9.4 mag e_W3mag ?=-1 Error on W3 magnitude (WISE)
1435-1443 F9.4 --- W3SNR ?=-1 W3-band S/N (WISE)
1445-1453 F9.4 --- W3chi2 ?=-1 chi2 in W3 band (WISE)
1455-1463 F9.4 mag W4mag ?=-1 W4 magnitude (WISE)
1465-1473 F9.4 mag e_W4mag ?=-1 Error on W4 magnitude (WISE)
1475-1483 F9.4 --- W4SNR ?=-1 W4-band S/N (WISE)
1485-1493 F9.4 --- W4chi2 [-1,0] Chi2 in W4 band (WISE) (NOT USED)
1495-1498 A4 --- CCflags WISE contamination and confusion flag
1500-1508 F9.4 arcsec sepW ?=-1 SDSS-WISE separation
1510 I1 --- UKIDSS [0/1] UKIDSS matching flag
1512-1520 F9.4 W/m2/Hz FY [-1,0] Y-band flux (UKIDSS) (NOT USED)
1522-1530 F9.4 W/m2/Hz e_FY [-1,0] Error on Y flux (UKIDSS) (NOT USED)
1532-1540 F9.4 W/m2/Hz FJ [-1,0] J-band flux (UKIDSS) (NOT USED)
1542-1550 F9.4 W/m2/Hz e_FJ [-1,0] Error on J flux (UKIDSS) (NOT USED)
1552-1560 F9.4 W/m2/Hz FH [-1,0] H-band flux (UKIDSS) (NOT USED)
1562-1570 F9.4 W/m2/Hz e_FH [-1,0] Error on H flux (UKIDSS) (NOT USED)
1572-1580 F9.4 W/m2/Hz FK [-1,0] K-band flux (UKIDSS) (NOT USED)
1582-1590 F9.4 W/m2/Hz e_FK [-1,0] Error on K flux (UKIDSS) (NOT USED)
1592-1593 I2 --- FIRST [0/1]?=-1 FIRST matching flag
1595-1603 F9.4 mJy F1p ?=0 Peak flux density at 20cm (FIRST)
1605-1613 F9.4 --- SNR(1) ?=0 Flux density S/N (FIRST)
1615-1623 F9.4 arcsec sep1 ?=0 SDSS-FIRST separation
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Byte-by-byte Description of file: setdr10q.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 18 A18 --- SDSS SDSS-DR10 designation (HHMMSS.ss+DDMMSS.s)
20- 29 F10.6 deg RAdeg Right ascension (J2000.0)
31- 40 F10.6 deg DEdeg Declination (J2000.0)
42- 50 I9 --- THINGID Unique identifier
52- 55 I4 --- Plate SDSS plate number
57- 61 I5 --- MJD SDSS Spectroscopic MJD
63- 66 I4 --- Fiber SDSS fiber number
68- 76 F9.4 --- z.v Visual inspection redshift
78- 86 F9.4 --- z.b SDSS Pipeline redshift estimate
88- 96 F9.4 --- e_z.b ?=-1 Error on SDSS pipeline redshift
(-4, -5, -6)
98-100 I3 --- f_z.b zwarning flag (G2)
102-103 I2 --- Class Classification from visual inspection
105 I1 --- zConf Redshift confidence from visual inspection
107-108 I2 --- Morph SDSS morphology flag (0=point, 1=extended)
110-123 I14 --- Btarg1 ?=0 BOSS target selection flag of the main
survey (G4)
125-143 I19 --- Atarg1 ?=0 Ancillary target selection flag 1 (G4)
145-147 I3 --- Atarg2 ?=0 Ancillary target selection flag 2 (G4)
149-160 E12.6 3.63uJy Fu ?=0 PSF flux in u band in nmaggies (G1)
162-173 E12.6 3.63uJy Fg ?=0 PSF flux in g band in nmaggies (G1)
175-186 E12.6 3.63uJy Fr ?=0 PSF flux in r band in nmaggies (G1)
188-199 E12.6 3.63uJy Fi ?=0 PSF flux in i band in nmaggies (G1)
201-212 E12.6 3.63uJy Fz ?=0 PSF flux in z band in nmaggies (G1)
214-225 E12.6 3.63uJy IVFu ?=0 Inverse variance of PSF flux in u band
in nmaggies (G1)
227-238 E12.6 3.63uJy IVFg ?=0 Inverse variance of PSF flux in g band
in nmaggies (G1)
240-251 E12.6 3.63uJy IVFr ?=0 Inverse variance of PSF flux in r band
in nmaggies (G1)
253-264 E12.6 3.63uJy IVFi ?=0 Inverse variance of PSF flux in i band
in nmaggies (G1)
266-277 E12.6 3.63uJy IVFz ?=0 Inverse variance of PSF flux in z band
in nmaggies (G1)
279-290 E12.6 mag umag ?=-9999 PSF magnitude in u band
292-303 E12.6 mag gmag ?=-9999 PSF magnitude in g band
305-316 E12.6 mag rmag ?=-9999 PSF magnitude in r band
318-329 E12.6 mag imag ?=-9999 PSF magnitude in i band
331-342 E12.6 mag zmag ?=-9999 PSF magnitude in z band
344-355 E12.6 mag e_umag ?=-9999 Error on PSF magnitude in u band
357-368 E12.6 mag e_gmag ?=-9999 Error on PSF magnitude in g band
370-381 E12.6 mag e_rmag ?=-9999 Error on PSF magnitude in r band
383-394 E12.6 mag e_imag ?=-9999 Error on PSF magnitude in i band
396-407 E12.6 mag e_zmag ?=-9999 Error on PSF magnitude in z band
409-420 E12.6 3.63uJy Fut ?=-1 Target selection PSF flux in nmaggies (G1)
422-433 E12.6 3.63uJy Fgt ?=-1 Target selection PSF flux in nmaggies (G1)
435-446 E12.6 3.63uJy Frt ?=-1 Target selection PSF flux in nmaggies (G1)
448-459 E12.6 3.63uJy Fit ?=-1 Target selection PSF flux in nmaggies (G1)
461-472 E12.6 3.63uJy Fzt ?=-1 Target selection PSF flux in nmaggies (G1)
474-481 F8.6 mag Extu ?=0 Galactic extinction in u (G8)
483-490 F8.6 mag Extg ?=0 Galactic extinction in g (G8)
492-499 F8.6 mag Extr ?=0 Galactic extinction in r (G8)
501-508 F8.6 mag Exti ?=0 Galactic extinction in i (G8)
510-517 F8.6 mag Extz ?=0 Galactic extinction in z (G8)
--------------------------------------------------------------------------------
Global notes:
Note (G1): In SDSS-III, we express all fluxes in terms of "nanomaggies",
which are a convenient linear unit. These quantities are related to
standard AB magnitudes: an object with flux F given in nMgy has a
Pogson magnitude (on AB scale) m=[22.5mag]-2.5log10F. A flux of 1Mgy
is therefore close to 3631Jy, and 1nMgy≃3.631µJy.
Note (G2): the "zwarning" flag is made of the following bits:
1 [0] = sky fiber
2 [1] = too little wavelength coverage
4 [2] = chi-squared of best fit is too close to that of second best
8 [3] = synthetic spectrum is negative
16 [4] = fraction of points more than 5σ away from best model
is too large (>5%)
32 [5] = chi-squared minimum at edge of the redshift fitting range
64 [6] = a QSO line exhibits negative emission (triggered only in QSO
spectra if CIV, CIII, MgII, Hβ, or Hα has
lineArea+3σ(lineArea)<0)
128 [7] = the fiber was unplugged, so no spectrum obtained
Note (G3): Principal Component Analysis of quasar spectra, see
Paris et al. 2011, Cat. J/A+A/530/A50; the quality is defined
by Eq.(11) in Paris et al. (2011A&A...530A..50P 2011A&A...530A..50P)
Note (G4): See Dawson et al. 2013AJ....145...10D 2013AJ....145...10D for the description
of the target selection flags.
Note (G5): Absolute magnitude calculated after correction for Galactic
extinction; the cosmology is defined by H0=70km/s/Mpc,
ΩM=0.3, ΩΛ=0.7; and the continuum spectral
index is -0.5.
Note (G6): quasars selected by XDQSO (eXtreme Deconvolution method):
a positive "uniform" flag indicates QSOs in a sufficiently
statistical sample for, e.g., clustering measurements.
1 indicates a core target, and 2 a quite complete core.
Note (G7): Δ(g-i) is the difference in (g-i), Galactic extinction
corrected, between the quasar and the mean of the quasars at that
redshift. Δ(g-i) is not defined for quasars at either z<0.12
or z>5.12. See Sect. 7 for details about this quantity.
Note (G8): Schlegel et al., 1998ApJ...500..525S 1998ApJ...500..525S
Note (G9): from Schlafly et al. 2011ApJ...737..103S 2011ApJ...737..103S
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Acknowledgements:
Isabelle Paris, paris(at)iap.fr
(End) Isabelle Paris [UChile, Chile], Patricia Vannier [CDS] 23-Jan-2014