J/ApJ/950/163ivo://CDS.VizieR/J/ApJ/950/163doi:10.26093/cds/vizier/ba-xp-53CDSPeng BoHaynes M.P.Ball C.J.Jones M.G.2026-07-02T11:59:34Z2025-09-22T14:47:16ZCDS support team

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

cds-question@unistra.frh-i-line-emissionastronomical-modelssurveysradio-galaxiesgalaxy-kinematicsModeling the integrated HI spectra of galaxies has been a difficult task, due to their diverse shapes, but more dynamical information is waiting to be explored in HI line profiles. Based on simple assumptions, we construct a physically motivated model for the integrated HI spectra: Parameterized Asymmetric Neutral hydrogen Disk Integrated Spectrum Characterization (PANDISC). The model shows great flexibility in reproducing the diverse HI profiles. We use Monte Carlo Markov Chain for fitting the model to global HI profiles and produce statistically robust quantitative results. Comparing with several samples of HI data available in the literature, we find the model-fitted widths agree with cataloged velocity widths (e.g., W50) down to S/N<~6. While dynamical information can only be extracted reliably from spectra with S/N>8. The model is also shown to be useful for applications like the baryonic Tully-Fisher relation (BTFR) and profile-based sample control. By comparing the model parameter vr to vflat, we uncover how the HI width is affected by the structure of the rotation curve, following a trend consistent with the difference in the BTFR slope. We also select a sample of spectra with broad wing-like features suggestive of a population of galaxies with unusual gas dynamics. The PANDISC model bears both promise and limitations for potential use beyond HI lines. Further application on the whole ALFALFA sample will enable us to perform large-scale ensemble studies of the HI properties and dynamics in nearby galaxies.2023ApJ...950..163Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/950/163CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/276 : The SDSS Photometric Catalog, Release 5 (Adelman-McCarthy+, 2007)VIII/77 : HI spectral properties of galaxies (Springob+, 2005)J/A+A/3/765 : HI synthesis observations in UMa cluster (Verheijen+, 2001)J/AJ/128/16 : HIPASS Bright Galaxy Catalog (Koribalski+, 2004)J/ApJ/669/821 : CO Tully-Fisher relation for host galaxies of QSOs (Ho+, 2007)J/AJ/138/1938 : EDD: All Digital HI profile catalog (Courtois+, 2009)J/A+A/532/A117 : AMIGA VIII. Flux ratio asymmetry parameter (Espada+, 2011)J/AJ/152/157 : Mass models for 175 disk galaxies with SPARC (Lelli+, 2016)J/ApJ/861/49 : ALFALFA extragalactic HI source catalog (Haynes+, 2018)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/950/163https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/950/163http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/950/163https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/950/163https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/950/163http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/950/163GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/950/163/table2 (Model fitted parameter of all the spectra used in the paper)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/950/163/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/950/163/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/950/163/table2?GETtext/xml+votable180.050000true1.12007925.84719440.0055555555555555565/4960 6582 6878 6/13 35-37 156 169 230 538 547 559-560 569 611-612 614 640 647-648 664 684 693 697 700 739 747 751 763 766 801 803 816-817 829 896 905 909-910 921-922 933 941 948 955 975 984 1007 1114 1561 2071 2121 2126 2130 2142 2163 2169 2171 2220 2226 2252 2266 2312 2328 2332 2347 2351 2383 2409 2563-2564 3511 3519 4147-4148 4160 4181-4182 4204 4220 4225 4249 4279 4304 4313-4314 4318 4322 4359 4369 4381 4389 4397 4400 4404-4405 4412 4419 4438-4439 4447 4471 4511 4522 4525 4534 4554 4586 4593 4600 4626 4650 4666-4667 4689 4691 4695 4750 4811 4823 4826 4831 4839 4841 4845 4891 4912 4933 4952 4962 4990 4994 5001 5028 5067 5124 5130 5134 5142 5146-5147 5161 5168 5174 5181 5183 5190 5193 5200 5202-5203 5209 5216 5230 5234 5241 5244 5273-5274 5283 5295 5307-5308 5329 5332 5347 5463 5469 5503-5504 5581 5584 5587 5589 5594 5596 5623 5625 5628-5629 5631 5634 5636 5639 5669 5710 5751 5827 5967 5975 6214 6230 6237 6257 6340 6604 6623 7132 7241 7303 7523 7602 7624 7743 7799 7878 7882 7946 7957 8225 8247 8256 8263 8282 8292 8303 8308 8320 8327-8330 8338 8341 8347 8355 8359-8360 8382-8383 8394 8421 8458 8460 8469 8473 8479-8480 8485 8495 8506 8509 8521 8675 8721 8723-8724 8740 8744 8747 8750 8763 8765 8818 8827 8834 8845 8901 8908 8941-8942 8944 8953 8984 9004 9029 9097 9099 9101 9112 9119-9120 9127 9246 9277 9361 9389 9463 9855 10281-10282 10286 10290 10296 10352 10364 10380 10398 10402 10424 10429 10436 10442 10475 10498 10511 10538 10637 10662 10755 10761-10762 10767-10769 10778 10787 10809 10817 10841 10847 10881 10910 10924-10925 10927 10930 10935 10941 10955 10970 10976 10979 10990-10991 11000 11006 11019 11030 11092 11127 11375 11389 11448 11566 11639 11696 12547 12566 12570 12594 12615 12619 12633 12641 12766 13346 13377 13391 13401 13461 13489 13498 13510 13516 13520 13522 13668 13827 15551 15592 16083 16441 16519 16595 17165 17753 17755 17759 17780 17847 17905 17910 17915 18010-18011 18013 18041 18093 18095 18107 18122 18158 18200 18202 18212 18232 18243 18278 18286-18287 18290 18296 18299 18310 18315 18378-18379 18384-18385 18387 18398 18405 18773 18799 18809 18813 18895 18932 18934 19033 19225 19235 19243 19272 19318 19324 19432 19436 19465 19505 19545 19570 19572 19579 19627 19646-19647 19666-19667 19671 19678 19696-19697 19705 19707 19717 19737 19740 19779 19818 19848 19850 19905 19944 19947 19978 19990 19995 19999-20000 20005-20006 20008-20009 20014-20015 20017 20020 20023 20026-20027 20031 20044 20046 20079 20089 20112-20113 20115 20117 20124 20188 20194 20208 20214-20215 20223 20245 20318 20328 20340 20353 20385 20402 20438 21941 22013 22290 22293 22298 22354 22369 22390 22495 23210 24952 25958 25966 25970-25972 25978 26014 26068 26088 26090 26106 26217 26234 26261 26265 26268 26271 26279 26289 26292 26301 26303-26304 26309 26317 26323 26326 26333 26336 26338 26351 26354 26360 26362 26365 26374 26377 26392 26410 26419 26421 26423 26432-26433 26440 26448 26450-26451 26457 26472 26497 26501-26502 26518 26523 26541 26546-26547 26551-26552 26554 26559-26560 26611 26969 26997 27030 27035 27046-27047 27060 27062 27064 27070-27071 27076 27079 27087 27090 27101 27106 27134 27243 27246 27248 27250 27253 27285 27326 27328 27334 27351 27365 27383 27393 27395 27406-27407 27426 27435 27442 27457-27458 27465 27468 27489 27504 27524-27525 27535 27540 27575 27581 27590 27592 27601 27603-27604 27606 27613 27622-27623 27626 27634 27643 27653 27669 27677 27693 27704 27717-27718 27721 27728 27731 27736 27741 27749-27750 27757 27761 27763-27764 27771 27781 27790 27792 27814 27823 27828 27833 27836 27853 27856-27857 27861-27862 27864 27868 27871 27874-27875 27883 27918 27926 27940 27942 27945-27946 27948 27954-27955 27989 27998 28003 28009 28015 28035 28038 28054 28058 28067-28068 28077 28087 28091 28102 28107 28112 28117 28123 28126 28141 28149 28156 28167 28178 28184 28191 28201 28204 28208 28217-28218 28226-28227 28230 28234 28237 28239 28247 28253 28255 28258-28259 28261 28267 28271 28281 28293-28296 28299-28300 28304-28305 28309-28310 28316 28338 28346 28350 28374 28378 28382 28388 28402 28404 28406 28416 28422 28433 28435 28443 28454 28456 28461 28463 28466-28468 28473 28476-28477 28485-28486 28493 28496 28505 28509-28510 28515-28516 28521 28529 28531 28535 28538 28546 28577 28612 28617 28630-28631 28636-28637 31345 31356 31382 31422-31423 31430 31439 31451 31454 31461 31469 31487 31501 31520 31523 31530 31628-31629 31632 31646 31666 31668 31673 31723 32231 33435 33589 33986 35514 35536 35746 36974 38846 40531 43972https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/950/163?format=asciiRadiodefaultJ/ApJ/950/163/table2Model fitted parameter of all the spectra used in the paperrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameCommon name used in paper and figure set (UGC for numbers<12943 or AGC numbers)meta.id;meta.maincharSimbadNameSimbad column added by the CDSmeta.idcharnullableNEDNED column added by the CDSmeta.ref.urlcharANameAlternative name in sample or reference papermeta.idcharSampleSample in paper using the spectrum (1)meta.bibcharRefReference of integrated HI spectra (2)meta.refcharvr[5/451] Model projected co-rotating velocitykm/sphys.veloc.rotat;meta.modelledfloatE_vr[0.01/104] Upper uncertainty in vrkm/sstat.error;stat.max;phys.veloc.rotatfloate_vr[0.01/218] Lower uncertainty in vrkm/sstat.error;stat.min;phys.veloc.rotatfloatk[-0.64/0.64] Model gradient of angular densityarith.grad;phys.density;meta.modelledfloatE_k[0/1.2] Upper uncertainty in kstat.error;stat.max;arith.gradfloate_k[0/0.9] Lower uncertainty in kstat.error;stat.min;arith.gradfloatvsigma[3/25] Model velocity dispersionkm/sphys.veloc.dispersion;meta.modelledfloatE_vsigma[0/15.3] Upper uncertainty in vsigmakm/sstat.error;stat.max;phys.veloc.dispersionfloate_vsigma[0/13] Lower uncertainty in vsigmakm/sstat.error;stat.min;phys.veloc.dispersionfloatvg[8.5/200] Model std of gaussian componentkm/sstat.stdev;meta.modelledfloatE_vg[0.01/105] Upper uncertainty in vgkm/sstat.error;stat.max;stat.stdevfloate_vg[0/104] Lower uncertainty in vgkm/sstat.error;stat.min;stat.stdevfloatr[0.059/1] Model disk flux fractionphot.flux;arith.ratio;meta.modelledfloatE_r[0/0.54] Upper uncertainty in rstat.error;stat.max;phot.fluxfloate_r[0/0.72] Lower uncertainty in rstat.error;stat.min;phot.fluxfloatF[0.3/2055] Model integrated line fluxJy.km/sphot.flux.density;meta.modelledfloatE_F[0.05/13.3] Upper uncertainty in FJy.km/sstat.error;stat.max;phot.flux.densityfloate_F[0.04/13.2] Lower uncertainty in FJy.km/sstat.error;stat.min;phot.flux.densityfloatvc[-233/17469] Model heliocentric velocity of line centerkm/sphys.veloc;pos.heliocentric;meta.modelleddoubleE_vc[0.01/92] Upper uncertainty in vckm/sstat.error;stat.max;phys.velocfloate_vc[0.01/132] Lower uncertainty in vckm/sstat.error;stat.min;phys.velocfloatW50mod[21/937] Model based W50 (the width at 50% of the peak flux)km/sspect.line.width;em.line.HI;meta.modelledfloatE_W50mod[0.02/192] Upper uncertainty in W50modkm/sstat.error;stat.max;spect.line.widthfloate_W50mod[0.02/179] Lower uncertainty in W50modkm/sstat.error;stat.min;spect.line.widthfloatSRD[3/3650] Model based Square Root Deviancestat.stdev;meta.modelledfloatrmsBl