J/ApJ/932/L6ivo://CDS.VizieR/J/ApJ/932/L6doi:10.26093/cds/vizier.19329006CDSvon Fellenberg S.D.Gillessen S.Stadler J.Baubock M.Genzel R.,de Zeeuw T.Pfuhl O.Amaro Seoane P.Drescher A.Eisenhauer F.,Habibi M.Ott T.Widmann F.Young A.2025-06-02T07:05:25Z2025-04-16T08:52:02ZCDS support team

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

cds-question@unistra.frgalactic-centerinfrared-astronomyspectroscopyradial-velocityastronomical-object-identificationWe present a large ~30"x30" spectroscopic survey of the Galactic Center using the SINFONI IFU at the VLT. Combining observations of the last two decades we compile spectra of over 2800 stars. Using the Bracket-{gamma} absorption lines, we identify 195 young stars, extending the list of known young stars by 79. In order to explore the angular momentum distribution of the young stars, we introduce an isotropic cluster prior. This prior reproduces an isotropic cluster in a mathematically exact way, which we test through numerical simulations. We calculate the posterior angular momentum space as a function of projected separation from Sgr A*. We find that the observed young star distribution is substantially different from an isotropic cluster. We identify the previously reported feature of the clockwise disk and find that its angular momentum changes as a function of separation from the black hole and thus confirm a warp of the clockwise disk (p~99.2%). At large separations, we discover three prominent overdensities of the angular momentum. One overdensity has been reported previously, the counterclockwise disk. The other two are new. Determining the likely members of these structures, we find that as many as 75% of stars can be associated with one of these features. Stars belonging to the warped clockwise disk show a top-heavy K-band luminosity function, while stars belonging to the larger separation features do not. Our observations are in good agreement with the predictions of simulations of in situ star formation and argue for the common formation of these structures.2022ApJ...932L...6Vhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/932/L6CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/470/864 : JHKL photometry of the Galactic Center (Blum+, 1996)J/ApJ/643/1011 : Early-type stars in the center of the Galaxy (Paumard+, 2006)J/ApJ/697/1741 : Warped disks of YSOs in Galactic center (Bartko+, 2009)J/ApJ/737/73 : Infrared extinction toward the Galactic Centre (Fritz+, 2011)J/ApJ/764/154 : Stellar populations in the central 0.5pc. I. (Do+, 2013)J/ApJ/783/131 : Kinematic of stars in Galactic center (Yelda+, 2014)J/ApJ/808/106 : NIR spectroscopic obs. in the Galactic Center (Stostad+, 2015)J/ApJ/830/17 : Gal. Center secondary IR astrometric standards (Boehle+, 2016)J/ApJ/837/30 : 25yrs obs. of stellar orbits in the GC (Gillessen+, 2017)J/A+A/609/A26 : Galactic Center old stars distribution (Gallego-Cano+, 2018)J/A+A/612/A1 : H.E.S.S. Galactic Plane Survey (HESS+, 2018)J/ApJ/896/100 : Kinematic structure of the Gal. Center S cluster (Ali+, 2020)J/A+A/641/A102 : Milky Way nuclear star cluster HKs phot. (Schoedel+, 2020)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/932/L6https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/932/L6http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/932/L6https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/932/L6https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/932/L6http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/932/L6GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/932/L6/table4 (Stars with determined orbital solutions; see Section 2.4)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/932/L6/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/932/L6/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/932/L6/table4?GETtext/xml+votable180.050000true266.4168061-29.00792080.005555555555555556Cone search capability for table J/ApJ/932/L6/table5 (Young stars without determined orbital solutions; see Section 2.5)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/932/L6/table5?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/932/L6/table5?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/932/L6/table5?GETtext/xml+votable180.050000true266.41435944-29.00743750.0055555555555555566/28830https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/932/L6?format=asciiInfrareddefaultJ/ApJ/932/L6/table4Stars with determined orbital solutions; see Section 2.4MPEMPE identifier (<[EG97] SNN> in Simbad for IDs starting with "S")meta.id;meta.maincharUCLAUCLA identifier (<[GKM98] SNN-NNN> in Simbad for IDs starting with "S")meta.id.crosscharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[PGM2006]Paumard+ 2006, J/ApJ/643/1011 identifiermeta.id.crosschara[0.1/6.6] Semimajor axisarcsecsrc.orbital;phys.angSize.smajAxisfloatl_e_aLimit flag on e_ameta.code.errorchare_a[0.01/1.7] a uncertaintyarcsecstat.error;src.orbital;phys.angSize.smajAxisfloate[0.01/1] Eccentricitysrc.orbital.eccentricityfloatl_e_eLimit flag on e_emeta.code.error;src.orbital.eccentricitychare_e[0.01/1.7] e uncertaintystat.error;src.orbital.eccentricityfloati[22.9/147.3] Inclinationdegsrc.orbital.inclinationfloate_i[0.03/8.1] inc uncertaintydegstat.error;src.orbital.inclinationfloatOmega[6.26/345] Position angle of the ascending node {Omega}degsrc.orbital.nodefloate_Omega[0.03/3.1] Omega uncertaintydegstat.error;src.orbital.nodefloatw[3.5/360] Longitude of the pericenter, {omega}degsrc.orbital.periastronfloate_w[0.02/9.3] omega uncertaintydegstat.errorfloatPer[16/6056] Orbital periodyrsrc.orbital;time.periodfloatl_PerLimit flag on Permeta.code.error;src.orbital;time.periodchare_Per[0.01/2344] Per uncertaintyyrstat.error;src.orbital;time.periodfloatt0[-878/4006] Epoch, t_0_yrtime.epochfloatl_e_t0Limit flag on e_t0meta.code.errorchare_t0[0.01/75] t0 uncertaintyyrstat.error;time.epochfloat_RAPositions from SIMBAD (right ascension part)degpos.eq.ra;meta.mainnullable_DEPositions from SIMBAD (declination part)degpos.eq.dec;meta.mainnullableSimbadNameSimbad column added by the CDSmeta.idcharnullableJ/ApJ/932/L6/table5Young stars without determined orbital solutions; see Section 2.5UCLAUCLA identifier (<[GKM98] SNN-NNN> in Simbad)meta.id.crosscharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[0/158] Running sequence numbermeta.recordintT08[-1/10007] Trippe+ (2008A&A...492..419T) identifiermeta.id.crossint[PGM2006]Paumard+ 2006, J/ApJ/643/1011 identifiermeta.id.crosscharONamesAlternative name (s)meta.id.crosscharKmag[9.2/18] K band magnitudemagphot.mag;em.IR.KfloatRad[0.4/29] Radius, Rarcsecphys.angSize;phys.size.radiusfloatSourceSource vLSR (1)meta.refcharoffRA[-11/21.7] Right ascension offset in arcsecarcsecpos.eq.ra;arith.diffdoublee_offRA[0.05/409] offRA uncertaintymasstat.errorfloatoffDE[-11.3/22] Declination offset in arcsecarcsecpos.eq.dec;arith.diffdoublee_offDE[0.04/308] offDE uncertaintymasstat.errorfloatVra[-349.2/354.3] Radial velocity (V_R.A._)km/sspect.dopplerVelocfloate_Vra[0.2/53] Vra uncertaintykm/sstat.error;spect.dopplerVelocfloatVdec[-357/315] Radial velocity (V_Decl_)km/sspect.dopplerVelocfloate_Vdec[0.2/37] Vdec uncertaintykm/sstat.error;spect.dopplerVelocfloatVz[-499/536] Radial velocity (V_z_)km/sspect.dopplerVelocfloate_Vz[0/154] Vz uncertaintykm/sstat.error;spect.dopplerVelocfloat_RAPosition, computed from Sgr A* position (17:45:40.036-29:00:28.17) with offRA and offDE offsets (right ascension part)degpos.eq.ra;meta.main_DEPosition, computed from Sgr A* position (17:45:40.036-29:00:28.17) with offRA and offDE offsets (declination part)degpos.eq.dec;meta.mainSimbadNameSimbad column added by the CDSmeta.idcharnullable