MMT hypervelocity star survey. II. J/ApJ/751/55 ivo://CDS.VizieR/J/ApJ/751/55 doi:10.26093/cds/vizier.17510055 CDS Brown W.R. Geller M.J. Kenyon S.J. 2017-10-12T12:59:58Z 2013-07-02T13:14:29Z CDS support team CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France cds-question@unistra.fr surveys milky-way-galaxy halo-stars radial-velocity visible-astronomy sloan-photometry b-stars We present the discovery of five new unbound hypervelocity stars (HVSs) in the outer Milky Way halo. Using a conservative estimate of Galactic escape velocity, our targeted spectroscopic survey has now identified 16 unbound HVSs as well as a comparable number of HVSs ejected on bound trajectories. A Galactic center origin for the HVSs is supported by their unbound velocities, the observed number of unbound stars, their stellar nature, their ejection time distribution, and their Galactic latitude and longitude distribution. Other proposed origins for the unbound HVSs, such as runaway ejections from the disk or dwarf galaxy tidal debris, cannot be reconciled with the observations. An intriguing result is the spatial anisotropy of HVSs on the sky, which possibly reflects an anisotropic potential in the central 10-100pc region of the Galaxy. Further progress requires measurement of the spatial distribution of HVSs over the southern sky. Our survey also identifies seven B supergiants associated with known star-forming galaxies; the absence of B supergiants elsewhere in the survey implies there are no new star-forming galaxies in our survey footprint to a depth of 1-2Mpc. 2012ApJ...751...55B https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/751/55 Catalog Research IsServedBy TAP VizieR generic service IsServedBy Conesearch service related-to V/139 : The SDSS Photometric Catalog, Release 9 (Adelman-McCarthy+, 2012) J/AJ/139/59 : Milky Way halo velocity dispersion profile (Brown+, 2010) J/AJ/137/4377 : List of SEGUE plate pairs (Yanny+, 2009) J/ApJ/671/1708 : Hypervelocity stars. III (Brown+, 2007) J/ApJ/660/311 : Hypervelocity stars. II. (Brown+, 2007) J/ApJ/647/303 : Spectroscopic survey of hypervelocity stars (Brown+, 2006) J/AJ/126/1362 : Century Survey Galactic Halo Project. I. (Brown+, 2003) http://www.sdss.org/ : SDSS home page https://cds.unistra.fr/vizier-org/licences_vizier.html https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/751/55 https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/751/55 http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/751/55 https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/751/55 https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/751/55 http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/751/55 GET text/xml+votable https://tapvizier.cds.unistra.fr/TAPVizieR/tap Cone search capability for table J/ApJ/751/55/table1 (HVS survey stars with v_rf_>+275km/s) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/751/55/table1? https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/751/55/table1? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/751/55/table1? GET text/xml+votable 180.0 50000 true 136.9374792 2.7519167 0.005555555555555556 Cone search capability for table J/ApJ/751/55/table2 (*Late B-type halo stars in the HVS survey) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/751/55/table2? https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/751/55/table2? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/751/55/table2? GET text/xml+votable 180.0 50000 true 0.37964583 26.78196111 0.005555555555555556 6/0 4 16 41 42 138 556 757 2221 2225 2249 2290 2296 2301 2396 2419 2605 2606 2652 2664 2705 2822 4096 4101 4120 4123 4125 4126 4139 4169 4196 4199 4201 4218 4248 4258 4297 4301 4362 4369 4371 4379 4391 4415 4423 4429 4431 4442 4447 4448 4453 4475 4479 4483 4501 4509 4569 4596 4635 4658 4673 4681 4687 4725 4727 4729 4731 4733 4736 4740 4744 4807 4813 4848 4870 4882 4893 4902 4951 4966 4972 5071 5086 5087 5120 5122 5132 5140 5146 5186 5193 5229 5232 5253 5268 5290 5293 5299 5325 5339 5344 5351 5434 5446 5459 5560 5561 5619 5645 5651 5653 5673 5678 5682 5719 5739 5770 5791 5821 5825 5830 5856 5858 5860 5922 5926 5934 5945 5975 6025 6038 6042 6082 6091 6106 6128 6140 6159 6160 6161 6165 6221 6250 6261 6265 6266 6269 6306 6343 6372 6389 6416 6465 6531 6575 6579 6652 6726 7201 7207 7222 7230 7300 7319 7346 7352 7424 7426 7428 7430 7451 7459 7555 7564 7598 7605 7667 7670 7757 7842 8141 8192 8198 8215 8223 8227 8234 8241 8256 8262 8272 8314 8323 8325 8330 8341 8343 8370 8375 8386 8393 8400 8416 8421 8428 8446 8451 8452 8482 8495 8512 8515 8528 8540 8542 8554 8571 8591 8600 8612 8629 8658 8666 8701 8704 8747 8748 8755 8760 8770 8797 8829 8884 8923 8928 8940 8961 9005 9024 9044 9120 9136 9137 9140 9161 9167 9187 9206 9250 9259 9271 9282 9295 9325 9328 9337 9339 9340 9346 9348 9365 9369 9374 9376 9387 9395 9396 9398 9399 9414 9415 9416 9429 9444 9463 9473 9507 9525 9529 9599 9629 9631 9632 9637 9639 9645 9695 9717 9742 9743 9752 9755 9764 9784 9791 9794 9796 9804 9833 9922 9950 9997 9999 10003 10014 10035 10036 10042 10145 10158 10161 10188 10212 10221 10228 10229 10264 10267 10277 10280 10393 10397 10410 10416 10516 10518 10528 10531 10536 10613 10645 10664 10759 10769 10804 10805 10851 10855 10862 10864 10889 10891 10892 10900 10923 10945 10999 11006 11056 11058 11061 11078 11152 11178 11223 11227 11234 11253 11309 11329 11341 11342 11395 11400 11411 11553 11585 11594 11620 11660 11690 11691 11780 11852 11907 11956 12370 12545 12564 12566 12612 12662 13313 13324 13342 13348 13358 13380 13405 13407 13413 13414 13426 13461 13575 15082 15351 15359 16003 16006 16801 16809 16980 17047 17207 17233 17242 17249 17258 17273 17277 17315 17318 17320 17336 17354 17362 17365 17471 17512 17576 17580 17608 17617 17658 17661 17666 17675 17689 17741 17752 17754 17764 17770 17772 17776 17785 17795 17801 17822 17830 17842 17886 18010 18011 18021 18030 18057 18061 18172 18178 18219 18341 18408 18519 18525 18545 18555 18586 18610 18611 18674 18681 18687 18699 18714 18718 18731 18773 18870 18880 18905 18912 18928 18935 18958 18960 18961 18989 18993 19013 19033 19038 19044 19068 19073 19086 19090 19099 19101 19132 19136 19158 19166 19181 19200 19220 19265 19272 19276 19330 19334 19337 19341 19355 19366 19373 19389 19410 19411 19428 19433 19498 19506 19789 19831 19892 19929 19940 19958 19981 19995 19997 20137 20139 20259 20270 20275 20309 20344 20347 20400 20410 20423 20427 20451 21596 21771 21779 21780 21826 21872 21877 21918 21956 21961 21966 21990 22352 22359 22364 22384 23197 23209 23214 24055 25026 25220 25247 25331 25504 25513 25519 25531 25588 25589 25594 25689 25821 25822 25847 25908 25909 25925 25926 25927 25930 25932 25935 25936 25937 25939 25941 25944 25950 25953 25956 25957 25958 25969 25971 25973 25987 25988 25990 25993 25995 26001 26006 26009 26011 26014 26017 26018 26019 26021 26030 26032 26053 26061 26064 26069 26073 26077 26092 26097 26100 26102 26104 26110 26113 26121 26149 26158 26161 26164 26169 26172 26187 26225 26228 26247 26251 26254 26255 26268 26276 26294 26295 26296 26297 26301 26308 26309 26310 26317 26327 26339 26346 26347 26357 26359 26362 26363 26372 26374 26382 26383 26385 26386 26389 26404 26407 26410 26412 26420 26422 26433 26434 26435 26436 26439 26443 26446 26449 26450 26451 26457 26463 26464 26468 26474 26482 26498 26513 26526 26532 26535 26538 26546 26548 26558 26565 26567 26571 26592 26594 26596 26597 26600 26602 26623 26870 26877 26903 26925 26958 26959 26979 26994 26996 27006 27011 27027 27034 27040 27041 27056 27065 27070 27073 27074 27096 27102 27105 27110 27122 27209 27217 27238 27239 27251 27356 27373 27383 27391 27410 27421 27437 27445 27473 27478 27484 27495 27509 27511 27531 27540 27542 27567 27585 27589 27594 27627 27632 27633 27646 27651 27655 27674 27694 27698 27707 27715 27732 27733 27742 27743 27747 27754 27759 27764 27770 27772 27779 27788 27790 27793 27810 27846 27856 27862 27864 27868 27869 27890 27895 27901 27908 27911 27915 27925 27931 27932 27934 27936 27939 27954 27960 27963 27992 28000 28004 28011 28018 28022 28054 28065 28067 28072 28075 28090 28094 28095 28130 28132 28136 28155 28179 28184 28204 28208 28211 28215 28232 28233 28237 28240 28248 28256 28264 28271 28279 28303 28308 28323 28333 28335 28352 28353 28358 28366 28383 28386 28394 28399 28409 28416 28481 28484 28485 28492 28510 28517 28519 28531 28547 28551 28552 28556 28568 28615 28666 31387 31391 31398 31405 31407 31411 31418 31439 31465 31467 31470 31471 31473 31476 31478 31480 31654 31658 31676 31691 31694 31714 31718 31729 32422 32428 32445 32490 32491 32492 33944 36543 36548 36641 36726 36728 36734 36849 36860 44742 45039 45053 48569 48917 48968 48973 48975 48988 49023 49104 49111 3.588997330618193e-19 4.653515163505597e-19 https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/751/55?format=ascii Optical default J/ApJ/751/55/table1 HVS survey stars with v_rf_>+275km/s Name Main identifier meta.id;meta.main char Ref ? Reference (3) meta.ref;pos.frame int nullable recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int Type Type of hypervelocity star (1) src.class char HVS [1/21]? High Velocity Star number if any, <[BGK2006] HV NN> in Simbad meta.id int nullable HRV Heliocentric radial velocity km/s spect.dopplerVeloc;pos.heliocentric int Vrf Minimum Galactic rest-frame velocity v_rf_ (not a full space velocity) (G1) km/s phys.veloc int T Get details from both tables for this star meta.ref.url char gmag0 De-reddened SDSS g-band magnitude (2) mag phot.mag;em.opt.B float gMag Absolute magnitude mag phys.magAbs float Dist Galactocentric distance R kpc pos.distance int GLON Galactic longitude deg pos.galactic.lon GLAT Galactic latitude deg pos.galactic.lat float B Cross-match within 1" with Brown et al. 2006, Cat. J/ApJ/647/303 and Brown et al. 2007, Cat. J/ApJ/671/1708 meta.ref.url int nullable DR6-9 Display the photometric SDSS-DR6, -DR7, -DR8 and -DR9 catalogs within 0.5" meta.ref.url char Sloan Display the SDSS online data for the nearest object meta.ref.url char Simbad Simbad column added by the CDS meta.ref.url char _RA Positions from SIMBAD database (right ascension part) deg pos.eq.ra;meta.main nullable _DE Positions from SIMBAD database (declination part) deg pos.eq.dec;meta.main nullable
J/ApJ/751/55/table2 *Late B-type halo stars in the HVS survey SimbadName Simbad column added by the CDS meta.id char recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int T1 Hypervelocity star (link to table 1) meta.ref.url int nullable RAJ2000 Hour of Right Ascension (J2000) pos.eq.ra;meta.main DEJ2000 Degree of Declination (J2000) pos.eq.dec;meta.main gmag SDSS g band apparent magnitude mag phot.mag;em.opt.B float e_gmag Uncertainty in gmag mag stat.error;phot.mag;em.opt.B float HRV Heliocentric radial velocity from this study km/s spect.dopplerVeloc;pos.heliocentric float e_HRV Uncertainty in HRV km/s stat.error float Vrf Velocity in Galactic rest frame (G1) km/s phys.veloc;pos.galactocentric float GLON Galactic longitude deg pos.galactic.lon GLAT Galactic latitude deg pos.galactic.lat float B Cross-match within 1" with Brown et al. 2006, Cat. J/ApJ/647/303 and Brown et al. 2007, Cat. J/ApJ/671/1708 meta.ref.url int nullable DR6-9 Display the photometric SDSS-DR6, -DR7, -DR8 and -DR9 catalogs within 0.5" meta.ref.url char Sloan Display the SDSS online data for the nearest object meta.ref.url char