J/A+A/594/A32       3XMM/SDSS Stripe 82 Galaxy Cluster Survey. I. (Takey+, 2016)

The 3XMM/SDSS Stripe 82 Galaxy Cluster Survey: I. Cluster catalogue and discovery of two merging cluster candidates. Takey A., Durret F., Mahmoud E., Ali G. <Astron. Astrophys. 594, A32 (2016)> =2016A&A...594A..32T 2016A&A...594A..32T (SIMBAD/NED BibCode)
ADC_Keywords: Surveys ; X-ray sources Keywords: X-rays: galaxies: clusters - galaxies: clusters: general - surveys - catalogs Abstract: We present a galaxy cluster survey based on XMM-Newton observations that are located in Stripe 82 of the Sloan Digital Sky Survey (SDSS). The survey covers an area of 11.25deg2. The X-ray cluster candidates were selected as serendipitously extended detected sources from the third XMM-Newton serendipitous source catalogue (3XMM-DR5). A cross-correlation of the candidate list that comprises 94 objects with recently published X-ray and optically selected cluster catalogues provided optical confirmations and redshift estimates for about half of the candidate sample. We present a catalogue of X-ray cluster candidates previously known in X-ray and/or optical bands from the matched catalogues or NED. The catalogue consists of 54 systems with redshift measurements in the range of 0.05-1.19 with a median of 0.36. Of these, 45 clusters have spectroscopic confirmations as stated in the matched catalogues. We spectroscopically confirmed another 6 clusters from the available spectroscopic redshifts in the SDSS-DR12. The cluster catalogue includes 17 newly X-ray discovered clusters, while the remainder were detected in previous XMM-Newton and/or ROSAT cluster surveys. Based on the available redshifts and fluxes given in the 3XMM-DR5 catalogue, we estimated the X-ray luminosities and masses for the cluster sample. We also present the list of the remaining X-ray cluster candidates (40 objects) that have no redshift information yet in the literature. Of these candidates, 25 sources are considered as distant cluster candidates beyond a redshift of 0.6. We also searched for galaxy cluster mergers in our cluster sample and found two strong candidates for newly discovered cluster mergers at redshifts of 0.11 and 0.26. The X-ray and optical properties of these systems are presented. Description: The 3XMM/SDSS Stripe 82 cluster survey is mainly based on the XMM X-ray serendipitous source catalogue. The latest version of the catalogue, 3XMM-DR5, was released on 2015 April 28. The 3XMM-DR5 catalogue contains 565962 X-ray detections comprising 396910 X-ray sources, which were detected in 7781 EPIC (PN, MOS1, MOS2) observations made public on/or before 2013 December 31. These observations cover 877deg2 of the sky (Rosen et al. 2016A&A...590A...1R 2016A&A...590A...1R, Cat. IX/46). File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file tablec1.dat 214 54 Galaxy cluster catalogue tablec1.fits 2880 8 Fits version of tablec1 tablec2.dat 85 40 Cluster candidate catalogue tablec2.fits 2880 4 Fits version of tablec2 -------------------------------------------------------------------------------- See also: IX/46 : XMM-Newton Serendipitous Source Cat. 3XMM-DR5 (XMM-SSC, 2016) J/A+A/534/A120 : The 2XMMi/SDSS Galaxy Cluster Survey (Takey+, 2011) Byte-by-byte Description of file: tablec1.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 15 I15 --- DETID X-ray detection number in the 3XMM-DR5 (G1) 17- 20 A4 --- --- [3XMM] 22- 37 A16 --- 3XMM IAU name given in the 3XMM-DR5 catalog (G1) 39- 47 F9.5 deg RAdeg X-ray detection right ascension (J2000) (G1) 49- 56 F8.5 deg DEdeg X-ray detection declination (J2000) (G1) 58- 66 I9 --- OBSID XMM-Newton observation number (G1) 68- 73 F6.4 --- z Galaxy cluster redshift from col. ztype 75- 78 F4.2 kpc/arcsec Scale Scale at the cluster redshift 80- 84 F5.2 10-17W/m2 FX X-ray flux in [0.5-2.0]keV band (G1) 86- 89 F4.2 10-17W/m2 e_FX Error in Fcat (G1) 91- 96 F6.2 10+35W LX X-ray luminosity in [0.5-2.0]keV band 98-102 F5.2 10+35W e_LX Error in Lcat 104-109 F6.2 kpc R500 Estimated physical radius R500 111-115 F5.2 kpc e_R500 Error in R500 117-122 F6.2 10+35W L500 X-ray bolometric luminosity within R500 124-128 F5.2 10+35W e_L500 Error in L500 130-134 F5.2 10+13Msun M500 Cluster mass within R500 136-139 F4.2 10+13Msun e_M500 Error in M500 141 I1 --- Ndet Number of detections for same source (G1) 143-157 A15 --- X-rayCat Name of X-ray selected cluster catalog (2) 159-178 A20 --- OptCat Name of optically selected cluster catalog (2) 180-183 A4 --- ztype [spec phot] Redshift type of the cluster (spec: spectroscopic, phot: photometric) 185-204 A20 --- r_z Reference to the chosen redshift (2) 206-211 F6.4 --- zs ?=9.9999 Mean redshift for cluster galaxies within R200 with spectroscopic redshift from the SDSS-DR12 213-214 I2 --- o_zs ?=99 Number of cluster galaxies that are used to derive zs -------------------------------------------------------------------------------- Note (2): No value for the newly discovered X-ray clusters based on XMM-Newton data References for catalogs as follows: 2XMMi/SDSS : Takey et al., 2013A&A...558A..75T 2013A&A...558A..75T, Cat J/A+A/558/A75 and 2014A&A...564A..54T 2014A&A...564A..54T, Cat J/A+A/564/A54 XCS : Mehrtens et al., 2012MNRAS.423.1024M 2012MNRAS.423.1024M, Cat J/MNRAS/423/1024 XCLASS : Clerc et al., 2012MNRAS.423.3561C 2012MNRAS.423.3561C, Cat J/MNRAS/423/3561 WH15 : Wen et al., 2015ApJ...807..178W 2015ApJ...807..178W, Cat J/ApJ/807/178 redMaPPer : Rykoff et al., 2014ApJ...785..104R 2014ApJ...785..104R, http://risa.stanford.edu/redmapper/ Geach : Geach et al., 2011MNRAS.413.3059G 2011MNRAS.413.3059G, Cat J/MNRAS/413/3059 -------------------------------------------------------------------------------- Byte-by-byte Description of file: tablec2.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 15 I15 --- DETID X-ray detection number in the 3XMM-DR5 (G1) 17- 20 A4 --- --- [3XMM] 22- 37 A16 --- 3XMM IAU name given in the 3XMM-DR5 catalog (G1) 39- 47 F9.5 deg RAdeg X-ray detection right ascension (J2000) (G1) 49- 56 F8.5 deg DEdeg X-ray detection declination (J2000) (G1) 58- 66 I9 --- OBSID XMM-Newton observation number (G1) 68- 71 F4.2 10-17W/m2 FX X-ray flux in [0.5-2.0]keV band (G1) 73- 76 F4.2 10-17W/m2 e_FX Error in Fcat (G1) 78 I1 --- Ndet Number of detections for same source (G1) 80 I1 --- Class [1/2] A flag of X-ray detection (2) 82- 85 A4 --- redshift? Expected redshift of the cluster candidate (low redshift: z<0.6, high redshift: z>0.6) -------------------------------------------------------------------------------- Note (2): X-ray detection flag as follows: 1 = good cluster candidate 2 =weak candidate -------------------------------------------------------------------------------- Global notes: Note (G1): Parameters extracted from the 3XMM-DR5 catalogue (Cat. IX/46). -------------------------------------------------------------------------------- Acknowledgements: Ali Takey, takey(at)iap.fr
(End) Patricia Vannier [CDS] 22-Jun-2016
The document above follows the rules of the Standard Description for Astronomical Catalogues; from this documentation it is possible to generate f77 program to load files into arrays or line by line