J/ApJ/449/527ivo://CDS.VizieR/J/ApJ/449/527doi:10.26093/cds/vizier.14490527CDSLu N.Y.Freudling W.2018-01-05T08:57:07Z2013-01-09T14:30:11ZCDS support team

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

cds-question@unistra.frgalaxiesinfrared-sourcesh-i-line-emissionWe have selected a sample of 876 galaxy candidates from the IRAS Point Source Catalog in the region of 2h<RA<10h and 0deg<DE<36deg, which crosses the Galactic anticenter part of the Zone of Avoidance (ZOA) and includes most of the highly obscured Orion-Taurus complex region. We have identified galaxies among the candidate sources by attempting to detect the 21cm H I line of those sources which were not known to be galaxies at the beginning of the survey. In this manner, we constructed a galaxy sample which is largely free from Galactic reddening. Of the 272 observed candidates, 89 were detected in the H I line up to a heliocentric velocity of v_h_~16,000km/s. The resulting galaxy sample of 717 galaxies is fairly complete (within about 10%) and uniform (within about 4%) in the part of the survey area 10deg away from the Galactic plane and for velocities up to at least 9000km/s. This provides, for the first time, a largely unbiased view on the large-scale structures in much of the survey area. Our main results are the following: (1) Several large voids are identified. In particular, a void between RA~3h and 4h, up to v_h_~6000km/s, separates the Pisces-Perseus supercluster at RA<3h from structures at RA>4h; and a "nearby void" occupies most of our survey area and reaches out to a redshift of nearly 3000km/s. (2) We found no nearby galaxy concentration that could significantly contribute to the "Local Velocity Anomaly" (LVA), but a general excess of galaxies around v_h_~5000km/s in the survey area. (3) The contrast between the "Great Wall" at v_h_~8500km/s and the void in front of it appears to gradually diffuse out after it enters the Zone of Avoidance from the northern Galactic hemisphere. (4) Our data combined with other galaxy surveys in or near the Galactic anticenter part of the ZOA suggest that the main ridge of the Pisces-Perseus supercluster does also not extend to Abell 569, a cluster in the northern Galactic hemisphere, and that the simple gravitational model consisting of the Local Void of Tully & Fisher, our nearby void, and Puppis and Fornax-Eridanus clusters would predict a LVA whose direction is probably too far away from that derived from observations.1995ApJ...449..527Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/449/527CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/125 : IRAS catalogue of Point Sources, Version 2.0 (IPAC 1986)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/449/527https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/449/527http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/449/527https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/449/527https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/449/527http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/449/527GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/449/527/table2 (List of the candidate sources)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/449/527/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/449/527/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/449/527/table2?GETtext/xml+votable180.050000true30.98060119.6669910.0055555555555555565/37 59 183 5750 6/5 6 9 11 12 20 26 31 32 33 34 40 41 43 44 50 51 52 55 57 83 87 88 100 104 120 127 135 141 143 178 189 192 215 223 241 243 250 256 262 263 264 266 269 286 291 295 302 309 315 329 336 338 359 371 377 381 387 388 390 397 418 422 424 428 430 462 463 481 483 496 538 548 550 551 563 564 569 570 580 583 589 593 595 601 602 614 615 620 629 634 635 668 671 710 711 718 721 723 727 730 740 754 757 758 764 765 767 775 776 783 792 797 802 815 826 836 849 850 858 859 869 879 891 904 907 908 909 928 929 930 938 941 947 948 950 953 956 958 959 963 979 982 986 987 993 995 1000 1002 1033 1037 1044 1050 1051 1061 1065 1067 1082 1089 1121 1152 1159 1168 1170 1173 1175 1200 1202 1207 1208 1214 1222 1227 1233 1240 1242 1257 1299 1320 1537 1548 1561 1577 2129 2132 2133 2141 2305 2306 2307 2308 2314 2315 2316 2318 2324 2328 2339 2340 2368 4097 4099 4106 4121 4138 4147 4149 4157 4161 4162 4167 4174 4178 4182 4188 4193 4196 4212 4215 4246 4253 4256 4268 4271 4277 4279 4284 4290 4301 4302 4303 4314 4320 4342 4349 4352 4354 4355 4359 4360 4361 4371 4374 4377 4381 4382 4383 4385 4396 4405 4410 4415 4449 4452 4457 4475 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27576https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/449/527?format=asciiInfraredRadiodefaultJ/ApJ/449/527/table2List of the candidate sourcesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHSimbad column added by the CDSmeta.ref.urlcharIRASIRAS-PSC (Cat. II/125) namemeta.id;meta.maincharprimarym_IRAS[AB] Multiplicity index on IRASmeta.code.multipcharn_IRAS[*] Note on IRAS (1)meta.notecharGLATGalactic latitudedegpos.galactic.latintn1[1/3] Object category (2)meta.code.classintn2[0/2] HI velocity in range [0/8000] (3)meta.codeintn3[0/1] HI velocity in range [8000/16000] (4)meta.codeintHV? Heliocentric velocitykm/sspect.dopplerVeloc;pos.heliocentricintnullableRef[1/11]? References (5)meta.refintnullableSimbadSimbad column added by the CDSmeta.refchar_RARight Ascension (J2000) from II/125/maindegpos.eq.ra;meta.main_DEDeclination (J2000) from II/125/maindegpos.eq.dec;meta.mainJ/ApJ/449/527/table3HI 21cm data of the detected galaxiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIRASIRAS name (note that 04425+1058 is not in table2)meta.id;meta.maincharm_IRAS[AB] Multiplicity index on IRASmeta.code.multipcharHV50Mean heliocentric velocity, taken to be the middle point between the velocities at the flux level 50% of the peak(s) on either side of the profilekm/sspect.dopplerVeloc;stat.meanintl_Wm20Limit flag on Wm20meta.code.errorcharWm20Velocity width at 20% of the mean flux density within the profilekm/sspect.line.widthintl_Wm50Limit flag on Wm50meta.code.errorcharWm50Velocity width at 50% of the mean flux density within the profilekm/sspect.line.widthintWp20? Velocity width at 20% of the peak(s)km/sspect.line.widthintnullableWp50? Velocity width at 50% of the peak(s)km/sspect.line.widthintnullableWp80? Velocity width at 80% of the peak(s)km/sspect.line.widthintnullableSHIIntegrated HI fluxJy.km/sphot.flux.density;em.line.HI;spect.linefloatS/NObserved ratio of peak signal-to-noisestat.snr;stat.maxfloatNotes? Notes about the HI observation (1)meta.noteintnullable