J/ApJ/890/132ivo://CDS.VizieR/J/ApJ/890/132doi:10.26093/cds/vizier.18900132CDSMalik S.Chand H.Seshadri T.R.2021-10-05T13:30:15Z2021-09-22T09:17:00ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frquasarspolarimetryredshiftedline-intensitiesvisible-astronomyspectroscopyWe probed the magnetic fields in high-redshift galaxies using excess extragalactic contribution to residual rotation measure (RRM) for quasar sightlines with intervening MgII absorbers. Based on a large sample of 1132 quasars, we have computed RRM distributions broadening using median absolute deviation from the mean ({sigma}_rrm_^md^), and found it to be 17.1+/-0.7rad/m^2^ for 352 sightlines having MgII intervening absorbers in comparison to its value of 15.1+/-0.6rad/m^2^ for 780 sightlines without such absorbers, resulting in an excess broadening ({sigma}_rrm_^ex^) of 8.0+/-1.9rad:m^2^ among these two subsamples. This value of {sigma}_rrm_^ex^, has allowed us to constrain the average strength of magnetic field (rest frame) in high-redshift galaxies responsible for these Mg II absorbers, to be ~1.3+/-0.3{mu}G at a median redshift of 0.92. This estimate of magnetic field is consistent with the reported estimate in earlier studies based on radio-infrared correlation and energy equipartition for galaxies in the local universe. A similar analysis on subsample split based on the radio spectral index, {alpha} (with F_{nu}_{propto}{nu}^{alpha}^), for flat ({alpha}>=-0.3; 315 sources) and steep ({alpha}<=-0.7; 476 sources) spectrum sources shows a significant {sigma}_rrm_^ex^ (at 3.5{sigma} level) for the former and absent in the latter. An anticorrelation found between the {sigma}_rrm_^md^ and percentage polarization (p) with a similar Pearson correlation of -0.62 and -0.87 for subsamples with and without MgII, respectively, suggests the main contribution for decrements in the p value to be intrinsic to the local environment of quasars.2020ApJ...890..132Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/890/132CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toV/147 : The SDSS Photometric Catalogue, Release 12 (Alam+, 2015)VII/289 : SDSS quasar catalog, sixteenth data release (DR16Q) (Lyke+, 2020)J/AJ/106/848 : QSO MgII absorption line systems (Drinkwater+, 1993)J/A+A/410/33 : MgII/FeII absorbers in 2dF-quasar survey (Menard+, 2003)J/ApJ/702/1230 : Rotation measure image of the sky (Taylor+, 2009)J/ApJS/194/42 : SDSS-DR3 MgII-based black hole masses (Rafiee+, 2011)J/A+A/546/A67 : Catalog of strong MgII absorbers (Lawther+, 2012)J/ApJ/748/131 : MgII absorbers in SDSS-DR7 quasar catalog (Shen+, 2012)J/ApJ/754/38 : MgII abs. syst. for Flat-Spectrum Radio QSOs (Chand+, 2012)J/ApJ/779/161 : MgII absorbers in 0.4<z<2.3 SDSS QSOs (Seyffert+, 2013)J/ApJS/212/15 : Polarized NVSS sources SEDs (Farnes+, 2014)J/MNRAS/442/3329 : Rotation measures of 2642 quasars (Xu+, 2014)J/ApJ/795/63 : Faraday rotation from magnesium II absorbers (Farnes+, 2014)J/MNRAS/473/5154 : Strong MgII absorber blazars (Mishra+, 2018)J/ApJS/235/11 : Abs. features in SDSS. I. MgII abs. doublets (Chen+, 2018)J/ApJS/242/28 : MgII-BAL quasar variability in SDSS spectra (Yi+, 2019)J/ApJ/882/4 : SDSS-RM project: Ha, Hb & MgII lines (Wang+, 2019)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/890/132https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/890/132http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/890/132https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/890/132https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/890/132http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/890/132GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/890/132/table2 (Main properties of our 1132 quasars (after discounting 3 outliers being at 9{sigma} level))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/890/132/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/890/132/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/890/132/table2?GETtext/xml+votable180.050000true0.9375-11.138610.0055555555555555566/38 546 687 694 700 712 746 991 2053 2063 2073-2074 2083 2087 2092 2142 2146 2150 2177 2195 2204 2208 2217 2574 4100 4106 4108 4123 4138 4155 4167 4195 4223 4240 4269 4283-4285 4322 4328 4333 4341 4345 4352 4358 4376 4394 4405 4407 4410 4436 4448 4453 4471 4475 4477 4504 4524-4525 4527 4536-4537 4572 4575 4585 4587 4589 4620 4644 4648 4659 4695-4696 4710 4746 4758-4759 4800 4809 4812 4815 4820 4830 4841 4848 4850 4852 4862 4866 4885 4887 4891 4918-4919 4943 4955 4976 4989 4992 5001 5009 5078 5086 5125 5132 5135 5145 5147 5152 5154 5163 5172 5185 5190 5200-5201 5206 5219 5242 5250 5255 5258-5259 5264 5270 5272 5302 5305 5331 5334 5345 5352-5353 5371 5390 5397 5405 5439 5448 5453 5455 5460 5466 5471-5472 5482 5502 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10840 10849 10851 10875 10881 10883 10888 10901 10910 10916 10924-10925 10932 10935 10942 10945 10959 10961 10964 10969 10975 10977 10979 10982-10983 10991 11005-11006 11029 11031 11034 11039 11042 11049-11050 11053-11055 11058 11067 11069-11070 11079 11083 11087 11091 11094 11099 11104 11116-11118 11137 11147 11149 11165 11167 11171-11172 11177 11195 11197 11207-11208 11276 11283 11290 11294 11297 11299 11311 11314 11317 11328 11362 11392 11399 11401 11418 11423 11459 11466 11474 11480 11491 11504 11508 11782 11787 11813 11839 11845 11854 11919 11924 11941 11948 11954 11956 12311 12538 12547 12635 12740 12749 12752 12760 12786 13320 13331 13334 13350 13352-13353 13360 13365 14996 16891 17150 17213 17215 17223 17238 17316 17366 17383 17392 17492 17495 17522 17551 17564 17569 17576 17639 17644 17654 17658 17676 17683 17686 17688 17690 17693 17697 17708 17711-17712 17718-17719 17729-17730 17737 17741 17758 17761 17769 17775 17792 17795 17801 17822 17850 17861 17878 17888 17904 17965 17979 17993 17996 18002 18005-18006 18010 18022 18025 18027 18035 18048 18053 18070 18073 18089 18134 18184 18208 18228 18235 18272 18300 18365 18396 18402 18416 18517 18548 18624 18627 18675 18755-18756 18774 18860 18943 18954 19079 19090 19097 19101 19104 19202 19326 19372 19389 19426 19430 19493 19503 19533 19629 19670 19673 19685 19710 19757 19767 19776 19782 19791 19803 19808 19813 19818 19829 19837 19842 19853 19857 19867 19870 19886 19902-19903 19912 19940-19941 19944 19952 19961 19966 20001 20027 20048 20050 20069 20085 20093 20111 20121 20126 20133-20134 20142 20146 20153 20161 20188 20193 20195 20200 20202 20221 20235 20238-20239 20247 20257 20264 20302 20317 20393 21847 21969 21979 22364 22366 22388 22397 22763 23194 23210 25841 25844 25912 25915 25923 25937 25950 25957 25964 25971 26006-26007 26011 26035-26036 26044 26067 26072 26086 26090 26095 26097 26106-26107 26185 26198 26220 26222 26226 26233 26244 26250 26301 26303 26308 26331 26334 26340 26352 26357 26442 26446 26485 26499 26503 26515 26525 26529 26540 26559 26564 26571 26878 26951 26966 26982-26983 26993 27002 27060 27062 27077 27093 27100-27101 27109 27115 27117 27249 27290-27291 27310 27315 27322 27355 27391 27413 27430 27440 27448 27455 27465 27479 27486 27493 27498 27509 27514 27516 27524 27569 27580 27589 27599 27650 27657 27660 27672 27676 27685 27700 27706 27733 27749 27751 27770 27796 27799 27803 27805 27814-27815 27821 27844-27845 27857 27883 27909 27911 27916 27955-27956 27964-27965 27972 27981 27983 27999 28002 28008 28032 28035 28040-28042 28045 28055 28067 28070 28072 28079 28083 28097 28099 28131 28134-28135 28141 28167 28171 28176 28208 28216 28218 28245 28253 28255 28273 28276 28292-28293 28338-28339 28344-28345 28351-28353 28364 28369-28370 28392 28436 28439 28446 28453 28460 28463 28471 28474 28476 28479 28528-28529 28536 28538 28540 28544 28548 28564-28565 28571 28575 28577 28581 28583 28617-28618 28638 28640 28660 28666 28671 30042-30043 31324 31333 31353 31357 31378 31391 31419 31430 31439 31444 31451 31454 31463 31535 31617 31633 31649 31661 31664 31686 31718 31735 32397 32417 32459 32473 32480 32674 36778 36789 36837https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/890/132?format=asciiOpticaldefaultJ/ApJ/890/132/table2Main properties of our 1132 quasars (after discounting 3 outliers being at 9{sigma} level)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameQuasars' name (JHHMMSS+DDMMSS)meta.id;meta.maincharprimaryMgIIDisplay the MgII absorption system properties (link to Table 3)meta.ref.urlcharRM[-153.2/117.3] Rotation measure, Taylor+ (2009, J/ApJ/702/1230)rad.m**-2physfloate_RM[0.1/29] Error in RMrad.m**-2stat.errorfloatGRM[-91.5/126] Galactic rotation measure, Xu+ (2014, J/other/RAA/14.942)rad.m**-2phys.polarization.rotMeasure;pos.galacticfloate_GRM[0.5/14] Error in GRMrad.m**-2stat.errorfloatRRM[-119/102] Residual Rotation measure, RRM=RM-GRMrad.m**-2stat.fit.residual;phys.polarization.rotMeasurefloate_RRM[0.7/29] Error in RRMrad.m**-2stat.errorfloatNMgII[0/5] Number of MgII absorbers along the line of sight of quasarmeta.numberintzem[0.38/2.3] Redshift of the quasar from SDSS DR-7, 9, 12 and 14src.redshiftfloatp[0.54/20.83] Fractional polarisation, Taylor+ (2009, J/ApJ/702/1230)%phys.polarizationfloate_p[0/1.8] Error in p%stat.errorfloatalpha[-1.25/0.9]? Total intensity spectral index {alpha}, Farnes+ (2014, J/ApJS/212/15)spect.indexfloatnullableRCatDisplay data from Taylor+, 2009, J/ApJ/702/1230; Xu+, 2014, J/other/RAA/14.942 and Farnes+, 2014, J/ApJS/212/15 within 5"meta.ref.urlintnullableSloanDisplay the online SDSS-DR14 data for the nearest objectmeta.ref.urlchar_RAPositions from names (right ascension part)degpos.eq.ra;meta.main_DEPositions from names (declination part)degpos.eq.dec;meta.mainJ/ApJ/890/132/table3Main properties of our 442 MgII absorption systems seen towards 352 quasars sightlines in our samplerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameQuasars' name (JHHMMSS+DDMMSS)meta.id;meta.maincharzem[0.42/2.3] Emission redshift, quasar, from SDSS DR-7, 9, 12 & 14src.redshiftfloatzabs[0.36/2.25] Absorption redshift, intervening Mg II absorbersrc.redshiftfloatEWMgII[0.14/5.2] Equivalent width of the MgII doublet line at 2796{AA} in Angstrom units0.1nmspect.line.eqWidthfloate_EWMgII[0.03/0.8] Uncertainty in EWMgII0.1nmstat.errorfloat