SDSS DLA and absorber quasar samples J/MNRAS/455/1043 ivo://CDS.VizieR/J/MNRAS/455/1043 doi:10.26093/cds/vizier.74551043 CDS Murphy M.T. Bernet M.L. 2024-08-15T20:16:37Z 2016-10-17T10:56:34Z CDS support team CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France cds-question@unistra.fr quasars redshifted line-intensities The dust content of damped Lyman {alpha} systems (DLAs) is an important observable for understanding their origin and the neutral gas reservoirs of galaxies. While the average colour excess of DLAs, E(B-V), is known to be <~15-millimagnitude (mmag), both detections and non-detections with ~2mmag precision have been reported. Here we find 3.2{sigma} statistical evidence for DLA dust-reddening of 774 Sloan Digital Sky Survey (SDSS) quasars by comparing their fitted spectral slopes to those of ~7000 control quasars. The corresponding E(B-V) is 3.0+/-1.0mmag, assuming a Small Magellanic Cloud (SMC) dust extinction law, and it correlates strongly (3.5{sigma}) with the metal content, characterized by the SiII {lambda}1526 absorption-line equivalent width, providing additional confidence that the detection is due to dust in the DLAs. Evolution of E(B-V) over the redshift range 2.1<z<4.0 is limited to <2.5mmag per unit redshift (1{sigma}), consistent with the known, mild DLA metallicity evolution. There is also no apparent relationship with neutral hydrogen column density, N_HI_, though the data are consistent with a mean E(B-V)/N_HI_=(3.5+/-1.0)*10^-24^mag*cm^2^, approximately the ratio expected from the SMC scaled to the lower metallicities typical of DLAs. We implement the SDSS selection algorithm in a portable code to assess the potential for systematic, redshift-dependent biases stemming from its magnitude and colour-selection criteria. The effect on the mean E(B-V) is negligible (<5 per cent) over the entire redshift range of interest. Given the broad potential usefulness of this implementation, we make it publicly available. 2016MNRAS.455.1043M https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/455/1043 Catalog Research IsServedBy TAP VizieR generic service IsServedBy Conesearch service related-to J/A+A/505/1087 : DLAs in SDSS-DR7 (Noterdaeme+, 2009) https://cds.unistra.fr/vizier-org/licences_vizier.html https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/455/1043 https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/455/1043 http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/455/1043 https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/455/1043 https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/455/1043 http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/455/1043 GET text/xml+votable https://tapvizier.cds.unistra.fr/TAPVizieR/tap Cone search capability for table J/MNRAS/455/1043/table1 (The DLA quasar (774 quasars)) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/455/1043/table1? https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/455/1043/table1? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/455/1043/table1? GET text/xml+votable 180.0 50000 true 3.1690417 13.8768611 0.005555555555555556 Cone search capability for table J/MNRAS/455/1043/table2 (The absorber quasar (1069 quasars)) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/455/1043/table2? https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/455/1043/table2? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/455/1043/table2? GET text/xml+votable 180.0 50000 true 3.1690417 13.8768611 0.005555555555555556 Cone search capability for table J/MNRAS/455/1043/table3 (The non-DLA quasar (7105 quasars)) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/455/1043/table3? https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/455/1043/table3? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/455/1043/table3? GET text/xml+votable 180.0 50000 true 0.2108333 -10.3655278 0.005555555555555556 Cone search capability for table J/MNRAS/455/1043/table4 (The non-absorber quasar (6733 quasars)) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/455/1043/table4? https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/455/1043/table4? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/455/1043/table4? 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11934 11937-11938 11944-11946 11948-11949 11951-11952 11968 12290 12381 12383 12390 12395-12396 12399-12400 12402 12405 12409 12481 12484 12545-12546 12550-12552 12556 12560 16887 16894 17149-17150 17207 17215 17233-17235 17241 17244 17246 17250 17252 17254 17259-17260 17264 17293 17295 17299-17300 17317-17319 17321 17323-17324 17328 17493-17494 17500 17503 17507 17510-17511 17514 17517-17518 17520 17522 17524 17551 17554 17556 17561-17564 17570 17574-17576 17579-17580 17584 17664 17666 17668 17743 17747-17749 17752 17755 17758 17761 17763-17765 17768 17778 17805 17813 17821-17822 17827-17828 17830 17833-17834 17836 17840 17857 17982 18004 18006-18007 18010 18012 18019 18022-18024 18026-18027 18029-18030 18032 18062 18070 18072-18073 18082-18083 18087 18090 18096 18098 18113 18303 18367 18385 18388-18389 18393-18394 18401 18405-18406 18408 18416 18418 18509 18511 18514 18521-18522 18525 18532 18535 18537-18538 18543-18546 18582-18583 18599 18605 18607 18613 18624-18625 18628 18685 18688 18765 18767 18770 18772 18777 18782 18790-18791 18793 18796 18800 18833-18834 18837 18839 18843 18845 18851 18854 18859 18881 18945-18946 18949-18950 18952-18953 19026 19028 19031 19041 19043-19044 19048 19051-19052 19056 19087 19089 19091 19095-19097 19099-19100 19105 19109-19112 19116 19120 19122 19202 19323 19326-19327 19374 19382 19387-19389 19391 19403-19404 19407 19416-19417 19419 19425-19427 19432 19458 19583 19647 19663 19667-19669 19683 19685-19686 19688-19690 19693-19694 19696-19697 19730 19734 19748-19749 19751 19755-19758 19762 19841-19843 19988 19992-19993 19995 20002 20005-20006 20008 20010-20011 20016 20032 20034 21843 21847 21849 21853 21879 21885 21971 21982 21991 21997 22001 22003 22005 22007 22010 22013-22015 22353 22355 22361 22389 22485 22715 23043 23045-23047 23049-23053 23058-23060 23072 23075-23076 23101 23103 23182 23188 23190 23192 23196 23201 23203 23205-23206 23210 23212 25565 25581 25585 25597-25598 25821-25823 25839 25842-25843 25846 25849 25851 25853 25901 25910 25913-25915 25927 25929 25931 25941-25943 25945-25946 25950-25953 25955-25957 25960 25966-25967 25969-25970 25972-25974 25979 25982-25983 25987 25990-25992 25995 25999-26000 26002-26004 26006-26007 26010-26011 26023-26024 26028 26032 26035 26038 26044 26046-26047 26056 26060-26061 26063-26065 26067 26069 26074-26076 26078-26080 26083 26088 26090-26094 26096 26098-26100 26102-26103 26106 26109-26111 26141 26157-26159 26167 26169-26170 26174 26177-26178 26181-26182 26188-26189 26191 26197 26202-26203 26206 26209 26217-26218 26224 26229 26234-26237 26243 26245-26246 26248-26249 26253-26254 26256 26259 26262 26264-26266 26268-26270 26272-26273 26277 26280 26286-26287 26289 26296-26298 26300-26301 26313 26319 26321 26323 26326 26329-26334 26338-26341 26344-26346 26349-26350 26355 26357 26360 26362 26365-26368 26377 26381-26382 26384 26386 26389-26390 26392 26394-26398 26400 26404 26407 26412 26414 26416 26420 26422-26425 26427 26429-26430 26433 26435-26437 26439 26441 26444-26445 26447-26449 26451 26461 26463-26464 26466 26470-26471 26473-26474 26476 26478-26480 26482 26487-26490 26492 26494 26496-26498 26501 26503-26505 26507 26509-26512 26514-26516 26518-26519 26524-26526 26528-26530 26532 26535 26540 26542 26544 26546-26549 26553-26556 26559-26561 26563-26565 26567-26568 26570 26574-26576 26578-26580 26582 26584 26586 26588-26589 26596-26598 26601-26603 26605-26608 26610 26613 26617-26618 26620 26622 26878-26879 26947 26949-26950 26953 26955-26956 26959-26960 26962 26968 26974-26976 26981 26986 26991-26993 26999-27002 27005-27006 27023 27025 27027-27028 27030 27033 27035 27037 27041 27043-27044 27046-27047 27049 27051-27054 27056-27057 27059 27062-27063 27070-27071 27074 27078 27083 27085-27089 27091 27093 27095-27098 27100-27101 27104-27106 27110 27117-27118 27120-27121 27124-27125 27132-27133 27135 27199 27213-27214 27219-27220 27222 27225-27227 27243 27255-27256 27258 27261 27263 27283-27286 27289-27290 27292 27294 27299 27301-27303 27305 27307 27311-27312 27315 27317 27319-27322 27325-27326 27328 27335 27340-27341 27344-27345 27347 27356-27358 27361-27366 27368-27369 27371 27376 27378-27381 27385 27388-27390 27394 27398-27399 27402-27405 27408 27414 27416 27421 27424 27427-27430 27436 27438-27442 27445-27447 27449-27450 27453 27456 27458-27459 27464 27468 27470 27472-27473 27475 27479-27480 27484-27486 27490 27495-27498 27501-27502 27504 27506-27507 27509 27513 27515 27520 27524-27525 27531 27535 27537-27538 27542-27543 27546-27547 27555 27557-27559 27561-27566 27570-27572 27574 27576 27578 27581-27586 27588 27590 27592 27595-27597 27599 27606 27608 27611 27618 27625 27631 27637-27639 27641-27643 27645-27647 27649 27652 27654-27657 27663-27665 27667-27670 27672-27673 27676 27678 27684 27686 27694 27696 27700-27701 27703 27705-27706 27712 27714 27717-27719 27728-27729 27732-27733 27737 27739-27740 27742-27743 27753-27754 27756 27758 27760-27761 27763 27767 27776-27777 27780-27781 27784 27787 27789-27794 27797-27798 27800-27801 27803 27805 27807-27809 27813 27815-27816 27820 27823 27826 27828 27830-27832 27834 27836-27838 27845-27847 27849 27851 27854-27855 27860-27861 27866 27871 27873-27874 27877 27879 27884-27885 27887 27889 27895-27896 27899-27902 27906-27909 27913-27914 27917 27919 27922-27925 27928 27931-27933 27936-27937 27943 27950-27953 27955 27957-27960 27962-27963 27972 27976-27978 27981-27984 27986-27987 27993-27994 27996 27999-28000 28004-28005 28016 28019-28020 28023-28025 28027 28040-28042 28046 28053 28055 28060-28062 28067 28069-28071 28073-28075 28081-28084 28087-28090 28097-28099 28102-28106 28108-28110 28112-28114 28126-28128 28131 28134-28135 28138-28140 28142 28149-28151 28153 28155 28160 28168-28170 28179 28183 28185 28189-28191 28193 28195 28197-28198 28201-28202 28205 28207-28208 28210 28212-28213 28215 28225-28226 28234 28236-28238 28240-28242 28244 28248 28250 28253 28255-28256 28258-28261 28264-28265 28267 28270 28273-28276 28281 28283 28289 28291 28293 28303-28304 28306 28309 28312 28315-28316 28318-28321 28323-28325 28327 28329 28332-28333 28335-28337 28340-28342 28344 28349 28353 28355 28361-28363 28365 28368-28369 28371 28373-28374 28377-28379 28381-28383 28385-28386 28389-28391 28395 28402-28403 28408-28410 28417-28419 28421 28423 28426-28428 28431-28434 28436 28438-28439 28442-28446 28448 28450 28452 28454-28455 28457 28459-28461 28465-28469 28476-28478 28480 28482 28484-28486 28489 28491 28498 28508-28509 28513 28518-28519 28523 28527 28529-28530 28536 28538-28539 28542 28544 28548 28551 28556-28557 28559-28560 28563-28564 28566-28567 28572-28573 28576 28579 28582 28596 28606-28607 28609-28611 28613-28618 28621-28623 28626-28630 28632-28633 28636-28638 28644 28646-28649 28651-28652 28656-28658 28660 28662-28665 28667 28669 30031 30035-30037 30040 30043-30044 30046 31289 31291 31294 31336-31337 31374-31375 31384 31391 31393 31401-31403 31405-31406 31408-31410 31412-31413 31417 31420-31421 31423 31427 31432 31434-31437 31442 31444 31447 31449 31451 31453-31455 31458 31460 31462 31466 31468 31470-31471 31474-31475 31481 31483 31486-31487 31531 31534 31546 31550-31551 31599 31617 31619 31625-31626 31628 31630-31631 31633-31636 31638 31642-31643 31648 31652 31654-31656 31659 31661-31663 31665 31667 31677-31679 31690 31694-31695 31697-31698 31715-31717 31719 31721-31724 31726 31733-31735 31737-31738 32397 32399 32402 32408 32410-32411 32414-32415 32429-32431 32434 32438-32440 32443 32456 32460 32462 32481-32482 32489 32492 32499 32503 32508 32510-32511 32680 32686 36727-36728 36761 36766-36767 36780 36782-36784 36786 36790 36792 36803 36805 36809-36810 36812 36816 45047 45049 45052 45054-45055 48990 49018-49019 49078 49085-49086 49094 49097 49100 49103 49105-49106 49121 49124 https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/455/1043?format=ascii Optical default J/MNRAS/455/1043/table1 The DLA quasar (774 quasars) recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int SDSS SDSS name (HHMMSS.ss+DDMMSS.s) meta.id;meta.main char zem Emission redshift src.redshift float zmin Minimun value for the redshift search path for DLAs src.redshift;pos.heliocentric float zmax Maximum value for the redshift search path for DLAs src.redshift;pos.heliocentric float beta Measured spectral index spect.index float e_beta 1-sigma uncertainty stat.error float betanw Spectral index measured with an unweighted power-law fit spect.index float zabs Absorption redshift src.redshift float logNHI logarithmic HI column density log(cm**-2) phys.columnDensity float EWSII ? Rest-frame equivalent widths of SiII 1526 (1) 0.1nm spect.line.eqWidth float nullable EWCII ? Rest-frame equivalent width of CII 1334 (1) 0.1nm spect.line.eqWidth float nullable dbeta Measured difference between the DLA quasar's beta and the mean beta of its control distribution meta.note float E(B-V)SMC Corresponding colour excess for SMC-like dust mag phot.color.excess float E(B-V)LMC Corresponding colour excess for LMC-like dust mag phot.color.excess float Nctrl Number of control quasars meta.number int Sloan Display the SDSS data for this quasar meta.ref.url char Simbad Simbad column added by the CDS meta.ref.url char _RA Position from SDSS name (right ascension part) deg pos.eq.ra;meta.main _DE Position from SDSS name (declination part) deg pos.eq.dec;meta.main
J/MNRAS/455/1043/table2 The absorber quasar (1069 quasars) recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int SDSS SDSS name (HHMMSS.ss+DDMMSS.s) meta.id;meta.main char zem Emission redshift src.redshift float zmin Minimun value for the redshift search path for DLAs src.redshift;pos.heliocentric float zmax Maximum value for the redshift search path for DLAs src.redshift;pos.heliocentric float beta Measured spectral index spect.index float e_beta 1-sigma uncertainty stat.error float betanw Spectral index measured with an unweighted power-law fit spect.index float zabs Absorption redshift src.redshift float logNHI logarithmic HI column density log(cm**-2) phys.columnDensity float EWSII ? Rest-frame equivalent widths of SiII 1526 (1) 0.1nm spect.line.eqWidth float nullable EWCII ? Rest-frame equivalent width of CII 1334 (1) 0.1nm spect.line.eqWidth float nullable dbeta Measured difference between the DLA quasar's beta and the mean beta of its control distribution meta.note float E(B-V)SMC Corresponding colour excess for SMC-like dust mag phot.color.excess float E(B-V)LMC Corresponding colour excess for LMC-like dust mag phot.color.excess float Nctrl Number of control quasars meta.number int Sloan Display the SDSS data for this quasar meta.ref.url char _RA Position from SDSS name (right ascension part) deg pos.eq.ra;meta.main _DE Position from SDSS name (declination part) deg pos.eq.dec;meta.main
J/MNRAS/455/1043/table3 The non-DLA quasar (7105 quasars) recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int SDSS SDSS name (HHMMSS.ss+DDMMSS.s) meta.id;meta.main char zem Emission redshift src.redshift float zmin Minimun value for the redshift search path for DLAs src.redshift;pos.heliocentric float zmax Maximum value for the redshift search path for DLAs src.redshift;pos.heliocentric float beta Measured spectral index spect.index float e_beta 1-sigma uncertainty stat.error float betanw Spectral index measured with an unweighted power-law fit spect.index float Sloan Display the SDSS data for this quasar meta.ref.url char _RA Position from SDSS name (right ascension part) deg pos.eq.ra;meta.main _DE Position from SDSS name (declination part) deg pos.eq.dec;meta.main
J/MNRAS/455/1043/table4 The non-absorber quasar (6733 quasars) zem Emission redshift src.redshift float recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int SDSS SDSS name (HHMMSS.ss+DDMMSS.s) meta.id;meta.main char zmin Minimun value for the redshift search path for DLAs src.redshift;pos.heliocentric float zmax Maximum value for the redshift search path for DLAs src.redshift;pos.heliocentric float beta Measured spectral index spect.index float e_beta 1-sigma uncertainty stat.error float betanw Spectral index measured with an unweighted power-law fit spect.index float Sloan Display the SDSS data for this quasar meta.ref.url char _RA Position from SDSS name (right ascension part) deg pos.eq.ra;meta.main _DE Position from SDSS name (declination part) deg pos.eq.dec;meta.main