J/A+A/657/A56 MeerKAT Galaxy Cluster Legacy Survey (MGCLS) DR1 (Knowles+, 2022)
The MeerKAT Galaxy Cluster Legacy Survey. I. Survey Overview and Highlights.
Knowles K., Cotton W.D., Rudnick L., Camilo F., Goedhart S., Deane R.,
Ramatsoku M., Bietenholz M.F., Bruggen M., Button C., Chen H.,
Chibueze J.O., Clarke T.E., de Gasperin F., Ianjamasimanana R.,
Jozsa G.I.G., Hilton M., Kesebonye K.C., Kolokythas K.,
Kraan-korteweg R.C., Lawrie G., Lochner M., Loubser S.I., Marchegiani P.,
Mhlahlo N., Moodley K., Murphy E., Namumba B., Oozeer N., Parekh V.,
Pillay D.S., Passmoor S.S., Ramaila A.J.T., Ranchod S.,
Retana-Montenegro E., Sebokolodi L., Sikhosana S.P., Smirnov O., Thorat K.,
Venturi T., Abbott T.D., Adam R.M., Adams G., Aldera M.A.,
Bauermeister E.F., Bennett T.G.H., Bode W.A., Botha D.H., Botha A.G.,
Brederode L.R.S., Buchner S., Burger J.P., Cheetham T., de Villiers D.I.L.,
Dikgale-Mahlakoana M.A., du Toit L.J., Esterhuyse S.W.P., Fadana G.,
Fanaroff B.L., Fataar S., Foley A.R., Fourie D.J., Frank B.S.,
Gamatham R.R.G., Gatsi T.G., Geyer M., Gouws M., Gumede S.C., Heywood I.,
Hlakola M.J., Hokwana A., Hoosen S.W., Horn D.M., Horrell J.M.G.,
Hugo B.V., Isaacson A.R., Jonas J.L., Jordaan J.D.B., Joubert A.F.,
Julie R.P.M., Kapp F.B., Kasper V.A., Kenyon J.S., Kotze P.P.A.,
Kotze A.G., Kriek N., Kriel H., Krishnan V.K., Kusel T.W., Legodi L.S.,
Lehmensiek R., Liebenberg D., Lord R.T., Lunsky B.M., Madisa K.,
Magnus L.G., Main J.P.L., Makhaba A., Makhathini S., Malan J.A.,
Manley J.R., Marais S.J., Maree M.D.J., Martens A., Mauch T., McAlpine K.,
Merry B.C., Millenaar R.P., Mokone O.J., Monama T.E., Mphego M.C.,
New W.S., Ngcebetsha B., Ngoasheng K.J., Ockards M.T., Otto A.J.,
Patel A.A., Peens-Hough A., Perkins S.J., Ramanujam N.M., Ramudzuli Z.R.,
Ratcliffe S.M., Renil R., Robyntjies A., Rust A.N., Salie S., Sambu N.,
Schollar C.T.G., Schwardt L.C., Schwartz R.L., Serylak M., Siebrits R.,
Sirothia S.K., Slabber M., Sofeya L., Taljaard B., Tasse C., Tiplady A.J.,
Toruvanda O., Twum S.N., van Balla T.J., van der Byl A., van der Merwe C.,
van Dyk C.L., Van Tonder V., Van Wyk R., Venter A.J., Venter M., Welz M.G.,
Williams L.P., Xaia B.
<Astron. Astrophys., 657, A56 (2022)>
=2022A&A...657A..56K 2022A&A...657A..56K (SIMBAD/NED BibCode)
ADC_Keywords: Surveys ; Clusters, galaxy ; Radio sources
Keywords: surveys - galaxies: clusters: general - radio continuum: general -
catalogs - radio lines: general - galaxies: general
Abstract:
MeerKAT's large number (64) of 13.5m diameter antennas, spanning 8km
with a densely packed 1 km core, create a powerful instrument for
wide-area surveys, with high sensitivity over a wide range of angular
scales. The MeerKAT Galaxy Cluster Legacy Survey (MGCLS) is a
programme of long-track MeerKAT L-band (900-1670MHz) observations of
115 galaxy clusters, observed for ∼6-10h each in full polarisation.
The first legacy product data release (DR1), made available with this
paper, includes the MeerKAT visibilities, basic image cubes at ∼8''
resolution, and enhanced spectral and polarisation image cubes at ∼8''
and 15'' resolutions. Typical sensitivities for the full-resolution
MGCLS image products range from ∼3-5µJy/beam. The basic cubes are
full-field and span 2°x2°. The enhanced products consist of
the inner 1.2°x1.2° field of view, corrected for the primary
beam. The survey is fully sensitive to structures up to ∼10' scales,
and the wide bandwidth allows spectral and Faraday rotation mapping.
Relatively narrow frequency channels (209kHz) are also used to
provide HI mapping in windows of 0<z<0.09 and 0.19<z<0.48. In
this paper, we provide an overview of the survey and the DR1 products,
including caveats for usage. We present some initial results from the
survey, both for their intrinsic scientific value and to highlight the
capabilities for further exploration with these data. These include a
primary-beam-corrected compact source catalogue of ∼626000 sources
for the full survey and an optical and infrared cross-matched
catalogue for compact sources in the primary-beam-corrected areas of
Abell 209 and Abell S295. We examine dust unbiased star-formation
rates as a function of cluster-centric radius in Abell 209, extending
out to 3.5R200. We find no dependence of the star-formation rate on
distance from the cluster centre, and we observe a small excess of the
radio-to-100µm flux ratio towards the centre of Abell 209 that may
reflect a ram pressure enhancement in the denser environment. We
detect diffuse cluster radio emission in 62 of the surveyed systems
and present a catalogue of the 99 diffuse cluster emission structures,
of which 56 are new. These include mini-halos, halos, relics, and
other diffuse structures for which no suitable characterisation
currently exists. We highlight some of the radio galaxies that
challenge current paradigms, such as trident-shaped structures, jets
that remain well collimated far beyond their bending radius, and
filamentary features linked to radio galaxies that likely illuminate
magnetic flux tubes in the intracluster medium. We also present early
results from the HI analysis of four clusters, which show a wide
variety of HI mass distributions that reflect both sensitivity and
intrinsic cluster effects, and the serendipitous discovery of a group
in the foreground of Abell 3365.
Description:
We have presented a technical description and initial science results
from the MGCLS DR1, which consists of 1.28GHz observations of 115
radio- and X-ray-selected galaxy clusters. The full list of MGCLS
targets and associated legacy product status is available in Table 1.
We note that the clusters were not selected to be a homogeneous or
complete sample, so care must be taken in any statistical
investigation of our cluster sample as a whole.
To facilitate community usage of the MGCLS DR1 products, we produced a
compact source catalogue with more than 626000 radio sources over the
115 cluster fields (Table 2), as well as optical and infrared DECaLS
cross-match catalogues for the compact sources in the Abell 209 and
Abell S295 fields (t3-a209 and t3-as295). We have also provided a list
of 59 multi-component extended radio sources in these two cluster
fields (Table A1 and Table A2). Finally, in Table 4 we have provided a
catalogue of diffuse cluster radio emission, containing 99 distinct
sources detected in 62 of the MGCLS fields, 56 of which are new.
The data products are available via the DR1 web page
(https://doi.org/10.48479/7epd-w356) and the MGCLS website
(http://mgcls.sarao.ac.za). The website will be updated when
additional data products become available.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 78 116 Observed cluster sample
table2.dat 126 715200 MGCLS compact source catalogue at 1.28GHz
t3-a209.dat 258 4261 Compact source catalogue for Abell 209 with
optical cross-match information from DECaLS
t3-as295.dat 258 4995 Compact source catalogue for Abell S296 with
optical cross-match information from DECaLS
table4.dat 100 99 Catalogue of the 99 diffuse cluster radio
sources detected in the MGCLS
tablea1.dat 72 33 Extended sources in the Abell 209 MGCLS field
tablea2.dat 76 26 Extended sources in the Abell S295 MGCLS field
tableb1.dat 333 459 SFR and infrared catalogue of star-forming
cluster galaxies in Abell 209
--------------------------------------------------------------------------------
See also:
https://doi.org/10.48479/7epd-w356 : MGCLS DR1 Home Page
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1 A1 --- Sample [RX] R: Radio-selected sample,
X: X-ray-selected sample
3- 19 A17 --- Cluster Cluster name (1)
20 A1 --- n_Cluster [+] Note on Cluster (2)
22- 29 F8.4 deg RAdeg MeerKAT pointing right ascension (J2000)
31- 38 F8.4 deg DEdeg MeerKAT pointing declination (J2000)
40- 44 F5.3 --- z Cluster redshift
46 A1 --- AstFix [X-] Product status:
Astrometry corrected mapping (X = yes)
48 A1 --- Astposn [X-] Product status:
Astrometry positional offsets (X = yes)
50 A1 --- Pol [X-] Polarisation mapped (X = yes)
52- 55 F4.1 uJy/beam rms Image sigma-clipped standard deviation
57 I1 --- DQF [0/3] Data quality flag (3)
59 A1 --- DE [X-] Presence of diffuse cluster emission,
see Table 4 (X = yes)
61- 78 A18 --- AName Alternate cluster name
--------------------------------------------------------------------------------
Note (1): Radio-selected targets are indicated by their common name,
X-ray-selected targets are indicated by their MCXC catalogue designation.
Note (2): + for observed as part of the X-ray-selected sample; data products
can be found under the MCXC designation, J0658.5-5556.
Note (3): Data quality flag as follows:
0 = Good dynamic range
1 = Moderate dynamic range with some artefacts around bright sources
2 = Poor dynamic range with high contamination by bright source artefacts
3 = Poor dynamic range with ripples across image
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 5 A5 --- --- [MKTCS]
7- 25 A19 --- MKTCS Source name, JHHMMSS.ss+DDMMSS.s (Source_name)
27- 34 F8.4 deg RAdeg Right ascension (J2000) (RA_deg)
36- 43 F8.4 deg DEdeg Declination (J2000) (Dec_deg)
45- 52 F8.6 arcsec e_RAdeg 1σ uncertainty on RAdeg (DeltaRA_deg)
54- 61 F8.6 arcsec e_DEdeg 1σ uncertainty on DEdeg (DeltaDec_deg)
63- 70 F8.3 mJy Stot Total integrated Stokes-I flux density
at 1.28GHz (Stot_mJy)
72- 76 F5.3 mJy e_Stot 1σ uncertainty on Stot (DeltaStot_mJy)
78- 85 F8.3 mJy/beam Ipk Peak Stokes-I brightness at 1.28GHz (Ipk_mJyb)
87- 91 F5.3 mJy/beam e_Ipk 1σ uncertainty on Ipk (DeltaIpk_mJyb)
93- 97 F5.1 arcmin maj FWHM of the major axis (smax_asec)
99-102 F4.1 arcmin min FWHM of the minor axis (smin_asec)
105-107 I3 deg PA Position angle (spa_deg)
109-126 A18 --- Field Cluster field of the source (Field)
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Byte-by-byte Description of file: t3-a209.dat t3-as295.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 I4 --- srcID Source ID (SRCID_MeerKAT)
6- 12 F7.4 deg RAdeg Right ascension (J2000) (RA_MeerKAT)
14- 21 F8.4 deg DEdeg Declination (J2000) (DEC_MeerKAT)
23- 36 F14.12 arcsec e_RAdeg 1σ uncertainty on RAdeg (E_RA)
38- 51 F14.12 arcsec e_DEdeg 1σ uncertainty on DEdeg (E_DEC)
53- 60 F8.4 mJy Stot Total integrated Stokes-I flux density
at 1.28GHz (TotalfluxmJy)
62- 69 F8.5 mJy e_Stot 1σ uncertainty on Stot
(ETotalflux_mJy)
71- 76 F6.3 mJy/beam Ipk Peak Stokes-I brightness at 1.28GHz
(Peak_brightness)
78- 83 F6.4 mJy/beam e_Ipk 1σ uncertainty on Ipk
(EPeakbrightness)
85- 99 F15.12 arcmin maj FWHM of the major axis (Maj_asec)
101-115 F15.12 arcmin min FWHM of the minor axis (Min_asec)
117-124 F8.5 deg RADdeg DECaLS cross-match right ascension (J2000)
(RA_DECaLS)
126-134 F9.5 deg DEDdeg DECaLS cross-match declination (J2000)
(DEC_DECaLS)
136-142 F7.4 mag gmag g-band magnitude (g)
144-150 F7.4 mag rmag r-band magnitude (r)
152-158 F7.4 mag zmag z-band magnitude (z)
160-166 F7.4 mag W1mag WISE W1-band magnitude (w1)
168-174 F7.4 mag W2mag WISE W2-band magnitude (w2)
176-179 F4.2 --- zPhot Photometric redshift (zPhot)
181-188 F8.5 mag e_gmag 1σ uncertainty on gmag (gErr)
190-197 F8.5 mag e_rmag 1σ uncertainty on rmag (rErr)
199-206 F8.5 mag e_zmag 1σ uncertainty on zmag (zErr)
208-215 F8.5 mag e_W1mag 1σ uncertainty on W1mag (w1Err)
217-224 F8.5 mag e_W2mag 1σ uncertainty on W2mag (w2Err)
226-230 F5.3 arcmin Sep Angular separation between MGCLS source and
optical match (SeparationMeerKATDECaLS)
232 I1 --- MatchFlag [0/2] Match flag (match_flag) (1)
234-245 E12.6 --- Phasmatch Probability that the MeerKAT source has a
matched counterpart (probhasmatch)
247-258 E12.6 --- Pthismatch Probability that the MeerKAT source has the
listed matched counterpart
(probthismatch)
--------------------------------------------------------------------------------
Note (1): Match flag as follows:
0 = no optical counterpart
1 = best optical counterpart according to the probability in Phasmatch
2 = second-best optical counterpart according to the probability in Phasmatch
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table4.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 17 A17 --- Cluster Cluster name
18 A1 --- n_Cluster [bcd] Note on Cluster (1)
20- 26 F7.3 deg RAdeg Right ascension (J2000) from NED
28- 34 F7.3 deg DEdeg Declination (J2000) from NED
36- 41 F6.4 --- z Cluster redshift
43- 47 A5 --- Class Diffuse source classification (2)
49 A1 --- New? [X] X for new detection
51- 55 F5.1 arcmin LAS Largest angular size in arcminutes
57- 61 F5.2 Mpc LLS Largest physical linear size at the cluster
redshift in Mpc
63- 88 A26 --- Notes Notes on the detection to previous studies,
HTR: head-tail galaxy,
WAT: wide-angle tail galaxy
90-110 A21 --- r_Notes Notes reference (3)
--------------------------------------------------------------------------------
Note (1): Note on cluster as follows:
b = Diffuse emission from the Hα region in the Orion Nebula is also
detected in this field.
c = MACS J0257.6-2209 has a published detection of a giant radio halo
(Giacintucci et al., 2017ApJ...841...71G 2017ApJ...841...71G) but in the higher-quality MGCLS
data, the reported giant halo looks like the blending of other sources.
d = Diffuse emission in RXC J0520.7-1328 is complex and difficult to classify
(see Sect. 6.1.2).
Note (2): Diffuse source classification as follows:
MH = mini-halo
H = halo
R = relic
Ph = phoenix
c = candidate
U = unknown/unclear
Pha = phoenix, Mixed classification in the literature (see Sect. 6.1.1)
Note (3): References as follows:
1 = Bacchi et al. (2003A&A...400..465B 2003A&A...400..465B)
2 = Bagchi et al. (2006Sci...314..791B 2006Sci...314..791B)
3 = Botteon et al. (2016MNRAS.463.1534B 2016MNRAS.463.1534B)
4 = Brunetti et al. (2008Natur.455..944B 2008Natur.455..944B)
5 = Cassano et al. (2013ApJ...777..141C 2013ApJ...777..141C)
6 = Dallacasa et al. (2009ApJ...699.1288D 2009ApJ...699.1288D)
7 = Di Gennaro et al. (2018A&A...620A..25D 2018A&A...620A..25D)
8 = Duchesne et al. (2021PASA...38...10D 2021PASA...38...10D)
9 = Dwarakanath et al. (2011JApA...32..529D 2011JApA...32..529D)
10 = Dwarakanath et al. (2018MNRAS.477..957D 2018MNRAS.477..957D)
11 = Ferrari et al. (2006A&A...446..417F 2006A&A...446..417F)
12 = George et al. (2015MNRAS.451.4207G 2015MNRAS.451.4207G)
13 = George et al. (2017MNRAS.467..936G 2017MNRAS.467..936G)
14 = Giacintucci et al. (2005A&A...440..867G 2005A&A...440..867G)
15 = Giacintucci et al. (2008A&A...486..347G 2008A&A...486..347G)
16 = Giacintucci et al. (2017ApJ...841...71G 2017ApJ...841...71G)
17 = Giovannini et al. (1999NewA....4..141G 1999NewA....4..141G)
18 = Giovannini & Feretti (2000NewA....5..335G 2000NewA....5..335G)
19 = Giovannini et al. (2006AN....327..563G 2006AN....327..563G)
20 = Giovannini et al. (2009A&A...507.1257G 2009A&A...507.1257G)
21 = Govoni et al. (2001A&A...376..803G 2001A&A...376..803G)
22 = Hindson et al. (2014MNRAS.445..330H 2014MNRAS.445..330H)
23 = Kale et al. (2012MNRAS.426.1204K 2012MNRAS.426.1204K)
24 = Kale et al. (2017MNRAS.472..940K 2017MNRAS.472..940K)
25 = Kale et al. (2019MNRAS.486L..80K 2019MNRAS.486L..80K)
26 = Liang et al. (2000ApJ...544..686L 2000ApJ...544..686L)
27 = Lindner et al. (2014ApJ...786...49L 2014ApJ...786...49L)
28 = Macario et al. (2013A&A...551A.141M 2013A&A...551A.141M)
29 = Macario et al. (2014A&A...565A..13M 2014A&A...565A..13M)
30 = Orru et al. (2007A&A...467..943O 2007A&A...467..943O)
31 = Parekh et al. (2017MNRAS.464.2752P 2017MNRAS.464.2752P)
32 = Pearce et al. (2017ApJ...845...81P 2017ApJ...845...81P)
33 = Rottgering et al. (1997MNRAS.290..577R 1997MNRAS.290..577R)
34 = Sandhu et al. (2018Ap&SS.363..133S 2018Ap&SS.363..133S)
35 = Shimwell et al. (2014MNRAS.440.2901S 2014MNRAS.440.2901S)
36 = Shimwell et al. (2015MNRAS.449.1486S 2015MNRAS.449.1486S)
37 = Slee et al. (2001AJ....122.1172S 2001AJ....122.1172S)
38 = Stuardi et al. (2019MNRAS.489.3905S 2019MNRAS.489.3905S)
39 = Venturi et al. (2000MNRAS.314..594V 2000MNRAS.314..594V)
40 = Venturi et al. (2003A&A...402..913V 2003A&A...402..913V)
41 = Venturi et al. (2007A&A...463..937V 2007A&A...463..937V)
42 = Venturi et al. (2013A&A...551A..24V 2013A&A...551A..24V, Cat. J/A+A/551/A24)
43 = Wilber et al. (2020PASA...37...40W 2020PASA...37...40W)
44 = Xie et al. (2020A&A...636A...3X 2020A&A...636A...3X)
45 = van Weeren et al. (2011A&A...533A..35V 2011A&A...533A..35V)
46 = Knowles et al. (2021MNRAS.504.1749K 2021MNRAS.504.1749K)
47 = HyeongHan et al. (2020ApJ...900..127H 2020ApJ...900..127H)
48 = Feretti et al. (2005A&A...444..157F 2005A&A...444..157F)
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Byte-by-byte Description of file: tablea?.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 7 F7.4 deg RAdeg Right ascension (J2000)
9- 16 F8.4 deg DEdeg Declination (J2000)
18- 24 F7.3 mJy Sint MeerKAT 1.28GHz integrated flux density
26- 30 F5.3 mJy e_Sint rms uncertainty on Sint
32- 37 F6.3 mJy/beam Ipeak MeerKAT 1.28GHz peak brightness
39- 41 I3 arcsec LAS Largest angular size
43- 67 A25 --- OptID Optical host identifier where known,
number-only IDs are from DECaLS
69- 76 F8.6 --- z ?=- Optical host redshift
--------------------------------------------------------------------------------
Byte-by-byte Description of file: tableb1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 I4 --- srcID Source ID, as in t3-a209.dat
(SRCID_MeerKAT)
6- 12 F7.4 deg RAdeg Right ascension (J2000) (RA_MeerKAT)
14- 21 F8.4 deg DEdeg Declination (J2000) (DEC_MeerKAT)
23- 36 F14.12 arcsec e_RAdeg 1σ uncertainty on RAdeg (E_RA)
38- 51 F14.12 arcsec e_DEdeg 1σ uncertainty on DEdeg (E_DEC)
53- 60 F8.4 mJy Stot Total integrated Stokes-I flux density
at 1.28GHz (TotalfluxmJy)
62- 69 F8.5 mJy e_Stot 1σ uncertainty on Stot
(ETotalflux_mJy)
71- 76 F6.3 mJy/beam Ipk Peak Stokes-I brightness at 1.28GHz
(Peak_brightness)
78- 83 F6.4 mJy/beam e_Ipk 1σ uncertainty on Ipk
(EPeakbrightness)
85- 99 F15.12 arcmin maj FWHM of the major axis (Maj_asec)
101-115 F15.12 arcmin min FWHM of the minor axis (Min_asec)
117-124 F8.5 deg RADdeg DECaLS cross-match right ascension (J2000)
(RA_DECaLS)
126-134 F9.5 deg DEDdeg DECaLS cross-match declination (J2000)
(DEC_DECaLS)
136-142 F7.4 mag gmag g-band magnitude (g)
144-150 F7.4 mag rmag r-band magnitude (r)
152-158 F7.4 mag zmag z-band magnitude (z)
160-166 F7.4 mag W1mag WISE W1-band magnitude (w1)
168-174 F7.4 mag W2mag WISE W2-band magnitude (w2)
176-179 F4.2 --- zPhot Photometric redshift (zPhot)
181-188 F8.5 mag e_gmag 1σ uncertainty on gmag (gErr)
190-197 F8.5 mag e_rmag 1σ uncertainty on rmag (rErr)
199-206 F8.5 mag e_zmag 1σ uncertainty on zmag (zErr)
208-215 F8.5 mag e_W1mag 1σ uncertainty on W1mag (w1Err)
217-224 F8.5 mag e_W2mag 1σ uncertainty on W2mag (w2Err)
226-230 F5.3 arcmin Sep Angular separation between MGCLS source and
optical match (SeparationMeerKATDECaLS)
232 I1 --- MatchFlag [0/2] Match flag (match_flag) (1)
234-245 E12.6 --- Phasmatch Probability that the MeerKAT source has a
matched counterpart (probhasmatch)
247-258 E12.6 --- Pthismatch Probability that the MeerKAT source has the
listed matched counterpart
(probthismatch)
260-268 F9.5 --- zSpec ?=-99 Spectroscopic redshift (zSpec)
270-274 A5 --- r_zSpec Catalogue from which the redshift was
obtained (zSource)
276-284 F9.5 Msun/yr SFR Star formation rate (SFR)
286-293 F8.6 Msun/yr e_SFR rms uncertainty on SFR (E_SFR)
295-301 F7.3 --- r/R200 Radius from the centre in units of R200
(r/R200)
303-309 F7.3 mJy Flux100 ?=-99 100um flux density (Flux_100um[mJy])
311-317 F7.3 mJy e_Flux100 ?=-99 rms uncertainty on Flux100
(EFlux100um[mJy])
319-325 F7.3 [-] logFratio ?=-99 log of the ratio between the radio
(1.28GHz) and FIR (100um) flux densities
(log(Totalflux/Flux100um))
327-333 F7.3 [-] E_logFratio ?=-99 rms uncertainty on logFratio
(Elog(Totalflux/Flux_100um))
--------------------------------------------------------------------------------
Note (1): Match flag as follows:
0 = no optical counterpart
1 = best optical counterpart according to the probability in Phasmatch
2 = second-best optical counterpart according to the probability in Phasmatch
--------------------------------------------------------------------------------
History:
Copied at
https://archive-gw-1.kat.ac.za/public/repository/10.48479/7epd-w356/index.html
(End) Patricia Vannier [CDS] 12-Jan-2023