J/MNRAS/477/5625ivo://CDS.VizieR/J/MNRAS/477/5625doi:10.26093/cds/vizier.74775625CDSFathivavsari H.Petitjean P.Jamialahmadi N.Khosroshahi H.G.,Rahmani H.Finley H.Noterdaeme P.Paris I.Srianand R.2024-08-18T20:19:26Z2018-11-16T13:04:32ZCDS support team

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

cds-question@unistra.frquasarsredshiftedline-intensitiesWe present the results of our automatic search for proximate damped Ly{alpha} absorption (PDLA) systems in the quasar spectra from the Sloan Digital Sky Survey Data Release 12. We constrain our search to those PDLAs lying within 1500km/s from the quasar to make sure that the broad DLA absorption trough masks most of the strong Ly{alpha} emission from the broad-line region (BLR) of the quasar. When the Ly{alpha} emission from the BLR is blocked by these so-called eclipsing DLAs, narrow Ly{alpha} emission from the host galaxy could be revealed as a narrow emission line (NEL) in the DLA trough. We define a statistical sample of 399 eclipsing DLAs with logN(HI)>=21.10. We divide our statistical sample into three subsamples based on the strength of the NEL detected in the DLA trough. By studying the stacked spectra of these subsamples, we found that absorptions from high ionization species are stronger in DLAs with stronger NEL in their absorption core. Moreover, absorption from the excited states of species like SIII are also stronger in DLAs with stronger NEL. We also found no correlation between the luminosity of the Ly{alpha} NEL and the quasar luminosity. These observations are consistent with a scenario in which the DLAs with stronger NEL are denser and physically closer to the quasar. We propose that these eclipsing DLAs could be the product of the interaction between infalling and outflowing gas. High-resolution spectroscopic observation would be needed to shed some light on the nature of these eclipsing DLAs.2018MNRAS.477.5625Fhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/477/5625CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVII/279 : SDSS quasar catalog: twelfth data release (Paris+, 2017)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/477/5625https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/477/5625http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/477/5625https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/477/5625https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/477/5625http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/477/5625GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/477/5625/sample (QSOs redshifts, Ly{alpha} integrated flux (table 1) and rst EWs of CII {lambda}1334, SiII {lambda}1526, AlII {lambda}1670, and FeII {lambda}2344 transitions (table 2))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/477/5625/sample?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/477/5625/sample?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/477/5625/sample?GETtext/xml+votable180.050000true10.7903988889-1.21029388890.0055555555555555566/2087 2133 2142 2164 2179-2180 2192 2225 2233 2242 2258 4107 4137 4141 4162 4180 4183 4191 4208 4248 4256 4289 4294 4300 4304 4308 4346 4418 4433 4437 4442 4503 4530 4545-4546 4556-4557 4587 4629 4676 4690-4691 4693 4727 4784 4798 4810 4820 4826 4852 4866 4880 4909 4937 4968 4998 5022 5052 5083 5099 5108 5125 5132 5135 5137 5146 5156 5181 5189 5197 5206 5210 5228 5236 5253-5254 5256-5257 5294 5302 5314 5352 5402 5407 5414 5453 5462 5481 5483 5543 5546 5549 5560 5579 5584 5587 5629 5634 5665 5683 5780 5783 5786 5814 5840 5880 5906 5910 5950 6007 6021 6061 6070 6109 6127 6132 6234 6238 6340 6354 6415 6434 6481 6493 6497 6499 6522 6542 6561 6577 6595 6618-6619 6621 6644 6646 7172 7176 7198 7200 7206 7213 7216 7219 7229 7249 7265 7277 7280 7284-7285 7293 7298 7321 7352 7360-7361 7389 7417 7428 7433 7452 7463-7464 7504 8213 8240-8241 8243 8253 8259 8268 8270 8347 8350 8355 8383 8391 8473 8481 8500 8511 8537 8576 8609-8610 8617 8628 8658 8678 8705 8723-8724 8739 8744 8810 8814 8942 8998 9008 9036 9058 9067 9084 9151 9182-9183 9260 9320 9345 9361 9392 9435 9440 9512 9522 9524 9600 9656 9784 9806 9818 9866 9937 9956 9965 9997 10006 10014 10030 10160-10161 10163 10254 10256 10262 10266 10283 10298 10310 10323 10325 10348 10366-10367 10370 10380 10398 10412 10416-10417 10419 10426 10436 10451 10468 10486 10504 10522 10531 10548 10550 10552 10575 10601 10610 10662 10720 10734-10735 10755-10756 10771 10788 10804 10823 10832 10846 10861 10873 10887-10889 10935 10941 10943 10948 10960 10963 10966 10968 10970 11030 11044 11103 11133 11176 11179 11184 11186 11206 11218 11251 11275 11303-11304 11330 11341 11345 11425 11428 11482 11492 11556 11562 11781 11814 11826 11850 11906-11907 11943 11948 12371 12565 12671 13344 13394 13432 13569 13584 17532-17533 17653 17661 17700 17703 17711 17747 17778 17817-17818 17827 17832 17835 17892 17901 17914 17951 17969 17981-17982 18008 18030 18062 18069 18081 18083 18121 18196 18220 18227 18339 18360 18389-18390 18430 18680-18681 18744 18789 18823 18836 18849 18858 18860 18876 18882 18890 18908 18937 18940 18996-18997 19027 19036 19090 19095 19207 19243 19350 19389-19390 19417 19439 19455 19459 19461 19466 19503 19506 19582 19585 19591 19610 19612 19628 19641 19646 19670 19682 19726 19737 19757 19784 19803 19841 19845 19856 19875 19890 19926 19968 19988 19993 20011 20038 20041 20108 20148 20164 20207 20243 20263 20285 20301 20348 20388-20389 20430 20436 21860 21982 22006 22389 25956 25964 26022 26029 26064 26096 26098 26191 26199 26210 26234 26295-26296 26314 26327 26331 26351 26411 26416 26426 26449 26458 26460 26476 26485 26495 26528 26532 26539 26562 26570 26615 26617 26942 26968 26972 26993 27002 27007 27056 27063 27107 27109-27110 27112 27211 27334 27346 27382 27395 27417 27420 27422-27423 27428 27469 27482 27489 27495 27612 27630 27633 27647 27657 27696 27734 27749 27763 27787 27791 27804 27817-27818 27841 27858 27861 27870 27876 27896 27905 27943 27954 27960 27962 28008 28012 28029 28033 28042 28055 28068 28076 28121 28124-28125 28189-28190 28197 28208-28209 28215 28254 28260 28279 28316 28327 28355 28397 28405 28426-28427 28437-28438 28450 28454 28479 28500-28501 28537 28573 28581 28612 28626 28639 28645 28669 28671 31389 31416 31424 31427 31437 31547 31640 31663 31668 31686 31732 32510 32683 36810 36814 36842https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/477/5625?format=asciidefaultJ/MNRAS/477/5625/sampleQSOs redshifts, Ly{alpha} integrated flux (table 1) and rst EWs of CII {lambda}1334, SiII {lambda}1526, AlII {lambda}1670, and FeII {lambda}2344 transitions (table 2)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSDSSSDSS name (HHMMSS.ss+ddMMSS.s)meta.id;meta.maincharzSDSS emission redshiftsrc.redshiftfloatlogNHIHI column densitylog(cm**-2)phys.columnDensityfloatzabsAbsorption redshift measured from fitting low ionization metal absorption linessrc.redshiftfloatzLya? Ly{alpha} redshift of the narrow Ly{alpha} emission (1)src.redshift;pos.heliocentricfloatnullablel_IFLimit flag on IFmeta.code.errorcharIFIntegrated flux of the narrow Ly{alpha} emission (erg/cm2/s) (2)mW.m**-2phot.fluxfloatSample[NS] Sample (3)src.samplecharEWCII? CII 1334 equivalent width measured directly by integrating the pixel values over the line profile (1) (2)0.1nmspect.line.eqWidthfloatnullablee_EWCII? rms uncertainty on EWCII0.1nmstat.errorfloatnullableEWSiII? SiII 1526 equivalent width measured directly by integrating the pixel values over the line profile (1)0.1nmspect.line.eqWidthfloatnullableEWSiIIF? Si II 1526 equivalent width determined from a fit to the absorption line0.1nmspect.line.eqWidthfloatnullablee_EWSiII? rms uncertainty on EWSiII0.1nmstat.errorfloatnullablen_e_EWSiII[i] i for infinitymeta.notecharEWAlII? AlII 1670 equivalent width measured directly by integrating the pixel values over the line profile (1)0.1nmspect.line.eqWidthfloatnullableEWAlIIF? AlII 1670 equivalent width determined from a fit to the absorption line0.1nmspect.line.eqWidthfloatnullablee_EWAlII? rms uncertainty on EWAlII0.1nmstat.errorfloatnullableEWFeII? FeII 2344 equivalent width measured directly by integrating the pixel values over the line profile (1)0.1nmspect.line.eqWidthfloatnullableEWFeIIF? FeII 2344equivalent width determined from a fit to the absorption line0.1nmspect.line.eqWidthfloatnullablee_EWFeII? rms uncertainty on EWFeII0.1nmstat.errorfloatnullableSloanDisplay the online SDSS data for the nearest objectmeta.ref.urlchar_RARight Ascension (J2000) from VII/279/dr12qdegpos.eq.ra;meta.main_DEDeclination (J2000) from VII/279/dr12qdegpos.eq.dec;meta.main