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J/MNRAS/460/3861    Herschel protocluster survey             (Kato+, 2016)

Herschel protocluster survey: a search for dusty star-forming galaxies in protoclusters at z = 2-3. Kato Y., Matsuda Y., Smail I., Swinbank A.M., Hatsukade B., Umehata H., Tanaka I., Saito T., Iono D., Tamura Y., Kohno K., Erb D.K., Lehmer B.D., Geach J.E., Steidel C.C., Alexander D.M., Yamada T., Hayashino T. <Mon. Not. R. Astron. Soc., 460, 3861-3872 (2016)> =2016MNRAS.460.3861K (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, galaxy ; Galaxy catalogs ; Redshifts Keywords: galaxies: formation - galaxies: high-redshift - infrared: galaxies - submillimetre: galaxies Abstract: We present a Herschel/Spectral and Photometric Imaging Receiver (SPIRE) survey of three protoclusters at z=2-3 (2QZCluster, HS1700, SSA22). Based on the SPIRE colours (S350/S250 and S500/S350) of 250µm sources, we selected high-redshift dusty star-forming galaxies potentially associated with the protoclusters. In the 2QZCluster field, we found a 4σ overdensity of six SPIRE sources around 4.5-arcmin (∼2.2Mpc) from a density peak of H α emitters at z=2.2. In the HS1700 field, we found a 5σ overdensity of eight SPIRE sources around 2.1-arcmin (∼1.0Mpc) from a density peak of Lyman-break galaxies at z=2.3. We did not find any significant overdensities in SSA22 field, but we found three 500 µm sources are concentrated 3-arcmin (∼1.4Mpc) east to the Ly α emitters overdensity. If all the SPIRE sources in these three overdensities are associated with protoclusters, the inferred star formation rate densities are 103-104 times higher than the average value at the same redshifts. This suggests that dusty star formation activity could be very strongly enhanced in z∼2-3 protoclusters. Further observations are needed to confirm the redshifts of the SPIRE sources and to investigate what processes enhance the dusty star formation activity in z∼2-3 protoclusters. Description: The observations were executed in Large Map mode with a scan rate of 30arcsec/s, repeated 14 times for each field (Nrep=14). The dates of observations are 2012 June 22 (2QZCluster), 2012 March 4 (HS1700), and 2012 May 10 (SSA22). The coverage of the maps are ∼23-arcminx23-arcmin (2QZCluster), ∼22-arcminx22-arcmin (HS1700), and ∼33-arcminx33-arcmin (SSA22) corresponding to ∼40-60 comoving Mpc at the protocluster redshifts, which are sufficient to search for concentration of DSFGs around the density peak of protocluster members. The integration times are 1.8, 1.5, and 3.7h for 2QZCluster, HS1700, and SSA22, respectively. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table3.dat 91 399 SPIRE sources catalogue of 2QZCluster table4.dat 91 383 SPIRE sources catalogue of HS1700 table5.dat 91 774 SPIRE sources catalogue of SSA22 table10.dat 124 7 Matching results for the SPIRE sources which have HAEs counterparts in 2QZCluster table11.dat 132 18 Matching results for the SPIRE sources which have emitter counterparts within overdensity in HS1700
See also: J/MNRAS/400/299 : Chandra deep protocluster survey (Lehmer+, 2009) J/MNRAS/440/3462 : AzTEC/ASTE 1.1mm survey of SSA22 (Umehata+, 2014) J/MNRAS/450/2615 : Spectroscopy of galaxies in the SSA22 field (Saez+, 2015) Byte-by-byte Description of file: table?.dat
Bytes Format Units Label Explanations
1- 19 A19 --- Name SPIRE ID (1) 21- 38 F18.14 deg RAdeg Right ascension of SPIRE source (J2000) 40- 60 F21.18 deg DEdeg Declination of SPIRE source (J2000) 62- 66 F5.1 mJy S250 Flux density of Herschel/SPIRE 250um band 68- 70 F3.1 mJy e_S250 rms uncertainty on S250 (instrumental noise) 72- 76 F5.1 mJy S350 Flux density of Herschel/SPIRE 350um band 78- 80 F3.1 mJy e_S350 rms uncertainty on S350 (instrumental noise) 82- 85 F4.1 mJy S500 Flux density of Herschel/SPIRE 500um band 87- 89 F3.1 mJy e_S500 rms uncertainty on S500 (instrumental noise) 91 A1 --- Ctp [*] * indicates a counterpart in tables 10 or 11
Note (1): Name as 2QZCluster-SPIRENNN in table3, HS1700-SPIRENNN in table 4 and SSA22-SPIRENNN in table5.
Byte-by-byte Description of file: table10.dat
Bytes Format Units Label Explanations
1 A1 --- Flag [AC] Type of selection (G1) 3- 21 A19 --- Name SPIRE ID, 2QZCluster-SPIRENNN 23- 32 F10.6 deg RAdeg Right ascension of SPIRE source (J2000) 34- 41 F8.6 deg DEdeg Declination of SPIRE source (J2000) 43- 46 F4.1 mJy S250 Flux density of Herschel/SPIRE 250um band 48- 50 F3.1 mJy e_S250 rms uncertainty on S250 (instrumental noise) 52- 55 F4.1 mJy S350 Flux density of Herschel/SPIRE 350um band 57- 59 F3.1 mJy e_S350 rms uncertainty on S350 (instrumental noise) 61- 64 F4.1 mJy S500 Flux density of Herschel/SPIRE 500um band 66- 68 F3.1 mJy e_S500 rms uncertainty on S500 (instrumental noise) 70- 81 A12 --- Ctp Counterpart name (QZC-C1-HAENN) 82- 86 A5 --- n_Ctp Note on counterpart (QSO) 88- 97 F10.6 deg RAcdeg Counterpart right ascension (J2000) 99-106 F8.6 deg DEcdeg Counterpart declination (J2000) 108-111 F4.2 arcsec Sep Separation between SPIRE source and counterpart 113 A1 --- l_pvalue Limit flag on pvalue 114-117 F4.2 --- pvalue p-value based on Downes et al. (1986MNRAS.218...31D) 119-124 A6 --- Memb Membership code (G2)
Byte-by-byte Description of file: table11.dat
Bytes Format Units Label Explanations
1 A1 --- Flag [ACF] Type of selection (G1) 3- 17 A15 --- Name SPIRE ID, HS1700-SPIRENNN 19- 26 F8.4 deg RAdeg Right ascension of SPIRE source (J2000) 28- 34 F7.4 deg DEdeg Declination of SPIRE source (J2000) 36- 39 F4.1 mJy S250 Flux density of Herschel/SPIRE 250um band 41- 43 F3.1 mJy e_S250 rms uncertainty on S250 (instrumental noise) 45- 48 F4.1 mJy S350 Flux density of Herschel/SPIRE 350um band 50- 52 F3.1 mJy e_S350 rms uncertainty on S350 (instrumental noise) 54- 57 F4.1 mJy S500 Flux density of Herschel/SPIRE 500um band 59- 61 F3.1 mJy e_S500 rms uncertainty on S500 (instrumental noise) 63- 69 A7 --- Ctp Counterpart name 71- 78 F8.4 deg RAcdeg Counterpart right ascension (J2000) 80- 86 F7.4 deg DEcdeg Counterpart declination (J2000) 88 A1 --- l_z [~] Limit flag on z 89- 93 F5.3 --- z ?=- Redshift information of counterparts 94-109 A16 --- n_z Note on z 110 A1 --- f_z [ef] Flag on z (3) 112-116 F5.2 arcsec Sep Separation between SPIRE source and counterpart 118 A1 --- l_pvalue Limit flag on pvalue 119-122 F4.2 --- pvalue p-value based on Downes et al. (1986MNRAS.218...31D) 124-132 A9 --- Mem Membership code (G2)
Note (3): flag on z as follows: e = BNB1 is identified as a "Lo-BAL" QSO and therefore it is difficult to measure redshift. f = photometric redshift from Chapman et al. (2015MNRAS.449L..68C)
Glonal notes: Note (G1): Type as follows: C = Colour-selected bright SPIRE sources A = At least one SPIRE band above 12 mJy sources F = Colour-selected faint SPIRE sources Note (G2): We classify sources with p≤0.05 as secure, and those with 0.05<p≤0.10 as tentative counterparts.
History: From electronic version of the journal
(End) Patricia Vannier [CDS] 24-Nov-2017
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

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