J/A+A/639/A136 The Fornax Deep Survey with the VST. IX. (Cantiello+, 2020) ================================================================================ The Fornax Deep Survey with the VST. IX. The catalog of sources in the FDS area, with an example study for globular clusters and background galaxies. Cantiello M., Venhola A., Grado A., Paolillo M., D'Abrusco R., Raimondo G., Quintini M., Hilker M., Mieske S., Tortora C., Spavone M., Capaccioli M., Iodice E., Peletier R., Barroso J.F., Limatola L., Napolitano N., Schipani P., van de Ven G., Gentile F., Covone G. =2020A&A...639A.136C (SIMBAD/NED BibCode) ================================================================================ ADC_Keywords: Clusters, galaxy ; Galaxies, photometry ; Photometry, SDSS ; Morphology ; Clusters, globular Keywords: galaxies: elliptical and lenticular, cD - galaxies: star clusters: general - galaxies: individual: NGC 1316, NGC 1399 - galaxies: clusters: individual: Fornax - galaxies: evolution - galaxies: stellar content Abstract: A possible pathway for understanding the events and the mechanisms involved in galaxy formation and evolution is an in-depth comprehension of the galactic and inter-galactic fossil sub-structures with long dynamical times-scales: stars in the field and in stellar clusters. This paper continues the series of the Fornax Deep Survey (FDS). Following the previous studies dedicated to extended Fornax cluster members, in this paper we present the catalogs of compact stellar systems in the Fornax cluster as well as extended background sources and point-like sources. We derive ugri photometry of ~1.7 million sources over the ~21 square degree area of FDS centered on the bright central galaxy NGC1399. For a wider area, of ~27 square degrees extending in the direction of NGC1316, we provide gri photometry for ~3.1 million sources. To improve the morphological characterization of sources we generate multi-band image stacks by coadding the best seeing gri-band single exposures with a cut at FWHM<=0.9". We use the multi-band stacks as master detection frames, with a FWHM improved by ~15% and a FWHM variability from field to field reduced by a factor of ~2.5 compared to the pass-band with best FWHM, namely the r-band. The identification of compact sources, in particular of globular clusters (GC), is obtained from a combination of photometric (e.g. colors, magnitudes) and morphometric (e.g. concentration index, elongation, effective radius) selection criteria, by also taking as reference the properties of sources with well-defined classification from spectroscopic or high-resolution imaging data. Using the FDS catalogs, we present a preliminary analysis of globular cluster (GC) distributions in the Fornax area. The study confirms and extends further previous results which were limited to a smaller survey area. We observe the inter-galactic population of GCs, a population of mainly blue GCs centered on NGC1399, extends over ~0.9Mpc, with an ellipticity ~0.65 and a small tilt in the direction of NGC1336. Several sub-structures extend over ~0.5Mpc along various directions. Two of these structures do not cross any bright galaxy; one of them appears to be connected to NGC1404, a bright galaxy close to the cluster core and particularly poor of GCs. Using the gri catalogs we analyze the GC distribution over the extended FDS area, and do not find any obvious GC sub-structure bridging the two brightest cluster galaxies, NGC1316 and NGC1399. Although NGC1316 is more than twice brighter of NGC1399 in optical bands, using gri data, we estimate a factor of ~3-4 richer GC population around NGC1399 compared to NGC1316, out to galactocentric distances of ~40' or ~230kpc Description: We derive ugri photometry of ~1.7 million sources over the ~21 square degree area of the Fornax Deep Survey (FDS) centered on the bright galaxy NGC1399 (fds.dat). For a wider area, of ~27 square degrees extending in the direction of NGC1316, we provide gri photometry for ~3.1 million sources (fdsex.dat). The identification of compact sources, globular clusters (GC) and ultra compact dwarf galaxies (UCD), is obtained from a combination of photometric and morphometric selection criteria taking as reference the properties of confirmed GCs and UCDs in the literature. The master tables of GC and UCD are also provided. File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file fds.dat 524 1682503 Sources position, ugri photometry and morphometry for ~1.7 million sources in ~21 sq. degree area of FDS fdsex.dat 424 3112605 Sources position, gri photometry and morphometry for ~3.1 million sources in ~27 sq. degree area of FDSex mastergc.dat 167 3263 *Reference GCs catalog masteruc.dat 158 68 *Reference UCDs catalog -------------------------------------------------------------------------------- Note on mastergc.dat: with positions, ugri photometry, morphometry of the collection of GC with well-defined classification from spectroscopic or high-resolution imaging data. Note on masteruc.dat: with positions, ugri photometry, morphometry of the collection of UCDs with well-defined classification from spectroscopic data. -------------------------------------------------------------------------------- See also: J/A+A/608/A142 : FDS with VST. III. LSB galaxies (Venhola+, 2017) J/A+A/620/A165 : FDS with VST. IV. dwarf galaxies (Venhola+, 2018) J/A+A/623/A1 : FDS with VST. V. Isophote fit (Iodice+, 2019) Byte-by-byte Description of file: fds.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 23 A23 --- ID Source identification based on the IAU naming rules, FDSJHHMMSS.ss+DDMMSS.ss 25- 33 F9.6 deg RAdeg Right ascension (J2000.0) 35- 44 F10.6 deg DEdeg Declination (J2000.0) 46- 51 F6.3 mag umag u-band PSF corrected magnitude 53- 57 F5.3 mag e_umag Error on u-band PSF corrected magnitude 59- 64 F6.3 mag gmag g-band PSF corrected magnitude 66- 70 F5.3 mag e_gmag Error on g-band PSF corrected magnitude 72- 77 F6.3 mag rmag r-band PSF corrected magnitude 79- 83 F5.3 mag e_rmag Error on r-band PSF corrected magnitude 85- 90 F6.3 mag imag i-band PSF corrected magnitude 92- 96 F5.3 mag e_imag Error on i-band PSF corrected magnitude 98-102 F5.3 --- CS SExtractor CLASS_STAR from the multi-band 'a'-stacks 104-109 F6.3 --- CIn Normalized concentration index from 'a'-stacks 111-116 E6.2 arcsec FR SExtractor Flux radius from the multi-band 'a'-stacks 118-123 F6.2 arcsec FWHM Source FWHM from the multi-band 'a'-stacks 125-131 E7.5 deg Aw SExtractor Profile RMS along major axis from 'a'-stacks 133-139 E7.5 deg Bw SExtractor Profile RMS along minor axis from 'a'-stacks 141-145 F5.2 --- Elo Elongation, major-to-minor axis ratio from 'a'-stacks 147-148 I2 --- Flags Flags, based on SExtractor flags coding rules 150-156 F7.3 --- Sharp DAOphot sharpness parameter from the 'a'-stacks 158-171 E14.10 --- CSu ?=-99 [0/1] u-band SExtractor CLASS_STAR 173-177 F5.3 --- CIun ?=-99 u-band normalized concentration index 179-185 F7.3 --- Sharpu ?=-99 u-band DAOphot sharpness parameter 187-200 E14.10 mag umagex8 ?=-99 u-band aperture magnitude within 8 pixels 202-215 E14.10 mag e_umagex8 ?=-99 Error on u-band aperture magnitude within 8 pixels 217-230 E14.10 mag umagauto ?=-99 SExtractor automated u-band aperture magnitude MAG_AUTO and 232-245 E14.10 mag e_umagauto ?=-99 Error on automated u-band aperture magnitude MAG_AUTO 247-260 E14.10 --- CSg [0/1]?=-99 g-band SExtractor CLASS_STAR 262-267 F6.3 --- CIgn g-band Normalized concentration index 269-275 F7.3 --- Sharpg g-band DAOphot sharpness parameter 277-290 E14.10 mag gmagex8 ?=-99 g-band Aperture magnitude within 8 pixels 292-305 E14.10 mag e_gmagex8 ?=-99 Error on g-band Aperture magnitude within 8 pixels 307-320 E14.10 mag gmagauto ?=-99 SExtractor g-band automated aperture magnitude MAG_AUTO 322-335 E14.10 mag e_gmagauto ?=-99 Error on g-band automated aperture magnitude MAG_AUTO 337-350 E14.10 --- CSr [0/1]?=-99 r-band SExtractor CLASS_STAR 352-357 F6.3 --- CIrn r-band Normalized concentration index 359-365 F7.3 --- Sharpr r-band DAOphot sharpness parameter 367-380 E14.10 mag rmagex8 ?=-99 r-band Aperture magnitude within 8 pixels 382-395 E14.10 mag e_rmagex8 ?=-99 Error on r-band Aperture magnitude within 8 pixels 397-410 E14.10 mag rmagauto ?=-99 SExtractor automated r-band aperture magnitude MAG_AUTO 412-425 E14.10 mag e_rmagauto ?=-99 Error on automated aperture r-band magnitude MAG_AUTO 427-440 E14.10 --- CSi [0/1]?=-99 i-band SExtractor CLASS_STAR 442-447 F6.3 --- CIin i-band Normalized concentration index 449-455 F7.3 --- Sharpi i-band DAOphot sharpness parameter 457-470 E14.10 mag imagex8 ?=-99 Aperture i-band magnitude within 8 pixels 472-485 E14.10 mag e_imagex8 ?=-99 Error on Aperture i-band magnitude within 8 pixels 487-500 E14.10 mag imagauto ?=-99 SExtractor automated aperture i-band magnitude MAG_AUTO 502-515 E14.10 mag e_imagauto ?=-99 Error on automated aperture i-band magnitude MAG_AUTO 517-521 F5.3 mag E(B-V) Reddening from Schlafly & Finkbeiner (2011ApJ...737..103S) 523-524 I2 --- Field [1/31] FDS field pointing ID -------------------------------------------------------------------------------- Byte-by-byte Description of file: fdsex.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 23 A23 --- ID Source identification based on the IAU naming rules, FDSJHHMMSS.ss+DDMMSS.ss 25- 33 F9.6 deg RAdeg Right ascension (J2000.0) 35- 44 F10.6 deg DEdeg Declination (J2000.0) 46- 51 F6.3 mag gmag g-band PSF corrected magnitude 53- 57 F5.3 mag e_gmag Error on g-band PSF corrected magnitude 59- 64 F6.3 mag rmag r-band PSF corrected magnitude 66- 70 F5.3 mag e_rmag Error on r-band PSF corrected magnitude 72- 77 F6.3 mag imag i-band PSF corrected magnitude 79- 83 F5.3 mag e_imag Error on i-band PSF corrected magnitude 85- 89 F5.3 --- CS SExtractor CLASS_STAR from the multi-band 'a'-stacks 91- 98 F8.3 --- CIn Normalized concentration index from 'a'-stacks 100-105 E6.2 arcsec FR SExtractor Flux radius from the multi-band 'a'-stacks 107-112 E6.2 arcsec FWHM Source FWHM from the multi-band 'a'-stacks 114-120 E7.3 deg Aw SExtractor Profile RMS along major axis from 'a'-stacks 122-128 E7.3 deg Bw SExtractor Profile RMS along minor axis from 'a'-stacks 130-134 F5.2 --- Elo Elongation, major-to-minor axis ratio from 'a'-stacks 136-137 I2 --- Flags Flags, based on SExtractor flags coding rules 139-145 F7.3 --- Sharp DAOphot sharpness parameter from the 'a'-stacks 147-160 E14.10 --- CSg ?=-99 g-band SExtractor CLASS_STAR 162-167 F6.3 --- CIgn g-band Normalized concentration index 169-175 F7.3 --- Sharpg g-band DAOphot sharpness parameter 177-190 E14.10 mag gmagex8 ?=-99 g-band Aperture magnitude within 8 pixels 192-205 E14.10 mag e_gmagex8 ?=-99 Error on g-band Aperture magnitude within 8 pixels 207-220 E14.10 mag gmagauto ?=-99 g-band SExtractor automated aperture magnitude MAG_AUTO 222-235 E14.10 mag e_gmagauto ?=-99 g-band Error on automated aperture magnitude MAG_AUTO 237-250 E14.10 --- CSr ?=-99 r-band SExtractor CLASS_STAR 252-257 F6.3 --- CIgr r-band Normalized concentration index 259-265 F7.3 --- Sharpr r-band DAOphot sharpness parameter 267-280 E14.10 mag rmagex8 ?=-99 r-band Aperture magnitude within 8 pixels 282-295 E14.10 mag e_rmagex8 ?=-99 Error on r-band Aperture magnitude within 8 pixels 297-310 E14.10 mag rmagauto ?=-99 r-band SExtractor automated aperture magnitude MAG_AUTO 312-325 E14.10 mag e_rmagauto ?=-99 r-band Error on automated aperture magnitude MAG_AUTO 327-340 E14.10 --- CSi ?=-99 i-band SExtractor CLASS_STAR 342-347 F6.3 --- CIin i-band Normalized concentration index 349-355 F7.3 --- Sharpi i-band DAOphot sharpness parameter 357-370 E14.10 mag imagex8 ?=-99 i-band Aperture magnitude within 8 pixels 372-385 E14.10 mag e_imagex8 ?=-99 Error on i-band Aperture magnitude within 8 pixels 387-400 E14.10 mag imagauto ?=-99 i-band SExtractor automated aperture magnitude MAG_AUTO 402-415 E14.10 mag e_imagauto ?=-99 i-band Error on automated aperture magnitude MAG_AUTO 417-421 F5.3 mag E(B-V) Reddening from Schlafly & Finkbeiner (2011ApJ...737..103S) 423-424 I2 --- Field [1/31] FDS field pointing ID -------------------------------------------------------------------------------- Byte-by-byte Description of file: mastergc.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 23 A23 --- ID Source identification based on the IAU naming rules, FDSJHHMMSS.ss+DDMMSS.ss 25- 33 F9.6 deg RAdeg Right ascension (J2000.0) 35- 44 F10.6 deg DEdeg Declination (J2000.0) 46- 51 F6.3 mag umag u-band PSF corrected magnitude 53- 57 F5.3 mag e_umag error on u-band PSF corrected magnitude 59- 64 F6.3 mag gmag g-band PSF corrected magnitude 66- 70 F5.3 mag e_gmag error on g-band PSF corrected magnitude 72- 77 F6.3 mag rmag r-band PSF corrected magnitude 79- 83 F5.3 mag e_rmag error on r-band PSF corrected magnitude 85- 90 F6.3 mag imag i-band PSF corrected magnitude 92- 96 F5.3 mag e_imag error on i-band PSF corrected magnitude 98-102 F5.3 --- CS SExtractor CLASS_STAR from the multi-band 'a'-stacks 104-109 F6.3 --- CIn Normalized concentration index from 'a'-stacks 111-117 F7.2 arcsec FR SExtractor Flux radius from the multi-band 'a'-stacks 119-123 F5.2 arcsec FWHM Source FWHM from the multi-band 'a'-stacks 125-128 F4.2 --- Elo Elongation, major-to-minor axis ratio - from 'a'-stacks 130-135 F6.3 --- Sharp DAOphot sharpness parameter from the 'a'-stacks 137-141 F5.3 mag E(B-V) Reddening from Schlafly & Finkbeiner (2011ApJ...737..103S) 143-144 I2 --- Field FDS field pointing ID 146-148 I3 --- FCC [47/335]? Fornax cluster catalog ID of the host galaxy 150-153 F4.2 --- pGC [0/1]? pGC likelihood from Jordan et al. (2015ApJS..221...13J, Cat. J/ApJS/221/13) 155-159 F5.3 arcsec rh2 ? Mean g and z GC half light radius 161-163 A3 --- Phot [Yes/No ] GC identified from ACSFCS imaging data 165-167 A3 --- Spect [Yes/No ] GC identified through spectroscopic data -------------------------------------------------------------------------------- Byte-by-byte Description of file: masteruc.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 23 A23 --- ID Source identification based on the IAU naming rules, FDSJHHMMSS.ss+DDMMSS.ss 25- 33 F9.6 deg RAdeg Right ascension (J2000.0) 35- 44 F10.6 deg DEdeg Declination (J2000.0) 46- 51 F6.3 mag umag u-band PSF corrected magnitude 53- 57 F5.3 mag e_umag error on u-band PSF corrected magnitude 59- 64 F6.3 mag gmag g-band PSF corrected magnitude 66- 70 F5.3 mag e_gmag error on g-band PSF corrected magnitude 72- 77 F6.3 mag rmag r-band PSF corrected magnitude 79- 83 F5.3 mag e_rmag error on r-band PSF corrected magnitude 85- 90 F6.3 mag imag i-band PSF corrected magnitude 92- 96 F5.3 mag e_imag error on i-band PSF corrected magnitude 98-102 F5.3 --- CS SExtractor CLASS_STAR from the multi-band 'a'-stacks 104-108 F5.3 --- CIn Normalized concentration index from 'a'-stacks 110-113 F4.2 arcsec FR SExtractor Flux radius from the multi-band 'a'-stacks 115-118 F4.2 arcsec FWHM Source FWHM from the multi-band 'a'-stacks 120-123 F4.2 --- Elo Elongation, major-to-minor axis ratio from 'a'-stacks 125-130 F6.3 --- Sharp DAOphot sharpness parameter from the 'a'-stacks 132-136 F5.3 mag E(B-V) Reddening from Schlafly & Finkbeiner (2011ApJ...737..103S) 138-139 I2 --- Field [6/16] FDS field pointing ID 141-147 F7.2 km/s HV Heliocentric velocity from the literature 149-154 F6.2 km/s e_HV Error on heliocentric velocity 156-158 A3 --- r_HV Reference for the heliocentric velocity (1) -------------------------------------------------------------------------------- Note (1): References as follows: K99: Kissler-Patig et al. (1999AJ....117.1206K) M04: Mieske et al. (2004A&A...418..445M, Cat. J/A+A/418/445) F07: Firth et al. (2007MNRAS.382.1342F, Cat. J/MNRAS/382/1342) B07: Bergond et al. (2007A&A...464L..21B, Cat. J/A+A/464/L21) M08: Mieske et al. (2008A&A...487..921M) G09: Gregg et al. (2009AJ....137..498G, Cat. J/AJ/137/498) S10: Schuberth et al. (2010A&A...513A..52S, Cat. J/A+A/513/A52) P18: Pota et al. (2018MNRAS.481.1744P) -------------------------------------------------------------------------------- Acknowledgements: Michele Cantiello, michele.cantiello(at)inaf.it References: Iodice et al., Paper I 2016ApJ...820...42I Iodice et al., Paper II 2017ApJ...839...21I Venhola et al., Paper III 2017A&A...608A.142V, Cat. J/A+A/608/A142 Venhola et al., Paper IV 2018A&A...620A.165V, Cat. J/A+A/620/A165 Iodice et al., Paper V 2019A&A...623A...1I, Cat. J/A+A/623/A1 Venhola et al., Paper VI 2019A&A...625A.143V Raj et al., Paper VII 2019A&A...628A...4R Spavone et al., Paper VIII 2019A&A...639A..14S ================================================================================ (End) Patricia Vannier [CDS] 25-May-2020