J/ApJ/937/46ivo://CDS.VizieR/J/ApJ/937/46doi:10.26093/cds/vizier.19370046CDSKuhn M.A.Hillenbrand L.A.Feigelson E.D.Fowler I.Getman K.V.,Broos P.S.Povich M.S.Gromadzki M.2024-11-06T20:27:39Z2024-09-06T15:10:46ZCDS support team

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

cds-question@unistra.frx-ray-sourcesmolecular-cloudsinfrared-photometryvisible-astronomyproper-motionstrigonometric-parallaxastronomical-object-identificationinfrared-astronomyspectroscopyob-starsyoung-stellar-objectsopen-star-clustersThe dynamical states of molecular clouds may affect the properties of the stars they form. In the vicinity of the Trifid Nebula (d=1180+/-25pc), the main star cluster (Trifid Main) lies within an expanding section of the molecular cloud; however, ~0.3{deg} to the north (Trifid North), the cloud's velocity structure is more tranquil. We acquired a Chandra X-ray observation to identify pre-main-sequence stars in Trifid North, complementing a previous observation of Trifid Main. In Trifid North, we identified 51 candidate pre-main-sequence stars, of which 13 are high-confidence Trifid members based on Gaia EDR3 parallaxes and proper motions. We also reanalyzed the membership of Trifid Main and separated out multiple background stellar associations. Trifid North represents a stellar population ~10% as rich as Trifid Main that formed in a separate part of the cloud. The 1D stellar velocity dispersion in Trifid North (0.6+/-0.2km/s) is 3 times lower than that in Trifid Main (1.9+/-0.2km/s). Furthermore, in Trifid Main, proper motions indicate that the portion of the star cluster superimposed on the optical nebula is expanding. Expansion of the HII region around the O-star HD 164492A, and the resulting gas expulsion, can explain both the motions of the stars and gas in Trifid Main. Contrary to previous studies, we find no evidence that a cloud-cloud collision triggered star formation in the region.2022ApJ...937...46Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/937/46CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/chandra : The Chandra Archive Log (CXC, 1999-2014)VIII/58 : A Survey of Radio H II Regions in the Northern Sky (Lockman+ 1989)II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)II/293 : GLIMPSE Source Catalog (I + II + 3D) (IPAC 2008)II/319 : UKIDSS-DR9 LAS, GCS and DXS Surveys (Lawrence+ 2012)I/352 : Distances to 1.47 billion stars in Gaia EDR3 (Bailer-Jones+, 2021)I/350 : Gaia EDR3 (Gaia Collaboration, 2020)J/ApJ/607/904 : Chandra obs. of Trifid nebula (Rho+, 2004)J/ApJS/160/319 : COUP: observations and source lists (Getman+, 2005)J/ApJS/161/154 : Near-IR spectral atlas of OB stars (Hanson+, 2005)J/ApJ/643/965 : Spitzer photometry of the Trifid nebula (M20) (Rho+, 2006)J/A+A/492/277 : Analysis of Collinder 69 stars with VOSA (Bayo+, 2008)J/ApJ/708/1760 : Flux estimations of faint X-ray sources (Getman+, 2010)J/MNRAS/405/1047 : MIPS 24um nebulae (Gvaramadze+, 2010)J/ApJS/209/27 : MYStIX: the Chandra X-ray sources (Kuhn+, 2013)J/ApJS/209/28 : MYStIX Wide-Field NIR data: crowded fields (King+, 2013)J/ApJS/209/29 : MYStIX: Mid-IR observations and catalogs (Kuhn+, 2013)J/ApJS/209/30 : MYStIX project: Bayesian matching (Naylor+, 2013)J/ApJS/209/31 : The MYStIX IR-Excess Source catalog (MIRES) (Povich+, 2013)J/ApJS/209/32 : Probable young stars in the MYStIX project (Broos+, 2013)J/ApJ/787/107 : Spatial structure of young stellar clusters. I. (Kuhn+, 2014)J/ApJS/213/1 : The MSFRs Omnibus X-ray Catalog (MOXC) (Townsley+, 2014)J/ApJ/802/60 : Structure of young stellar clusters. II. (Kuhn+, 2015)J/MNRAS/452/2858 : NIR spectroscopy of Galactic WR stars. III (Kanarek+, 2015)J/ApJ/838/61 : Candidate X-ray OB stars in MYStIX regions (Povich+, 2017)J/AJ/154/87 : Stellar pop. of the young star cluster NGC 6231 (Kuhn+, 2017)J/AJ/156/18 : APOGEE DR14: companions of evolved stars (Price-Whelan+, 2018)J/MNRAS/477/5191 : Galactic young stellar cluster lifetimes (Richert+, 2018)J/A+A/620/A172 : Solar neighbourhood young stars 3D mapping (Zari+, 2018)J/ApJ/870/32 : Kinematics in young star clusters & associations (Kuhn+, 2019)J/A+A/625/A135 : Gal. interstellar dust Gaia-2MASS 3D maps (Lallement+, 2019)J/A+A/626/A17 : Young population in Vela-Puppis region (Cantat-Gaudin+, 2019)J/MNRAS/486/2477 : Catalogue of members of NGC 6530 (Wright+, 2019)J/ApJS/244/28 : The 3rd MSFRs Omnibus X-ray Catalog (MOXC3) (Townsley+, 2019)J/MNRAS/489/5669 : MiMeS Magnetic properties of O-type stars (Petit+, 2019)J/A+A/633/A51 : Distances to molecular clouds in SFR (Zucker+, 2020)J/ApJ/899/128 : Members of NGC 7000/IC 5070 Complex (Kuhn+, 2020)J/MNRAS/500/3064 : The SEDIGISM survey: First Data Release (Schuller+, 2021)J/ApJ/912/162 : Open clusters in solar neighborhood (Pang+, 2021)J/ApJS/254/33 : Gal. midplane Spitzer/IRAC cand. YSOs (SPICY) (Kuhn+, 2021)J/ApJ/917/21 : Stellar kinematics in Orion Complex with Gaia (Swiggum+, 2021)J/ApJ/917/23 : SPYGLASS. I. Mapping young stellar structures (Kerr+, 2021)J/ApJ/921/81 : M20 young stellar population (Kalari, 2021)J/AJ/162/282 : Untangling Gal. III. Pre-main-sequence stars (Mcbride+, 2021)J/A+A/661/A147 : Gal. interstellar dust Gaia-2MASS 3D maps (Lallement+, 2022)J/ApJ/935/43 : X-ray Sources Towards 10 Open Clusters (Getman+, 2022)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/937/46https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/937/46http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/937/46https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/937/46https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/937/46http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/937/46GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/937/46/table1 (X-ray source properties (Trifid North))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/937/46/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/937/46/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/937/46/table1?GETtext/xml+votable180.050000true270.4292499-22.72349980.005555555555555556Cone search capability for table J/ApJ/937/46/table2 (X-ray-selected Trifid North member candidates)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/937/46/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/937/46/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/937/46/table2?GETtext/xml+votable180.050000true270.47251345598-22.731999758510.005555555555555556Cone search capability for table J/ApJ/937/46/table3 (*Revised members of Trifid Main)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/937/46/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/937/46/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/937/46/table3?GETtext/xml+votable180.050000true270.46193-22.871570.005555555555555556Cone search capability for table J/ApJ/937/46/table4 (Gaia members of G7.4-0.2)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/937/46/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/937/46/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/937/46/table4?GETtext/xml+votable180.050000true270.3417946-23.04160560.0055555555555555566/28913 289158.305533028865447e-20 4.621782916333392e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/937/46?format=asciiX-rayOpticalInfrareddefaultJ/ApJ/937/46/table1X-ray source properties (Trifid North)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMmDisplay the member candidates (Table 2)meta.ref.urlcharCXOUSource name (JHHMMSS.s+DDMMSS) (CXOU)meta.id;meta.maincharprimaryRAJ2000[270.4/270.8] Right ascension (J2000) (ra)degpos.eq.ra;meta.mainDEJ2000[-23/-22.5] Declination (J2000) (dec)degpos.eq.dec;meta.mainerrPos[0.06/1.02] Positional uncertainty (pos_error)arcsecstat.error;posfloatSCt[3/448]? Number of counts in the extraction aperture for the total (0.5-8.0keV) band (sc_t)ctphot.count;em.X-rayintnullableSCh[1/227]? Number of counts in the extraction aperture for the hard (2-8keV) band (sc_h)ctphot.count;em.X-ray.mediumintnullableNCt[2.6/437] Background-subtracted net counts in the total (0.5-8.0keV) band (nc_t)ctphot.count;em.X-rayfloatNCh[-1.1/219] Background-subtracted net counts in the hard (2-8keV) band (nc_h)ctphot.count;em.X-ray.mediumfloattheta[0.7/11.1] Off-axis angle (theta)arcmininstr.offsetfloatPB[0/0.008] Probability of producing the observed source counts as a fluctuation of the background level (probNoSrc)stat.fit.goodnessdoublePks[0/1]? Probability of producing the observed Kolmogorov-Smirnov test statistic from a nonvariable source (~0:light-curve variability) (pks)stat.fit.goodnessdoublenullableME2019[0.9/6.8] Median energy (total band) as observed in 2019 (me_2019)keVem.energy;em.X-rayfloatMEcorr[0.8/6.8] Median energy (total band) with the correction from Appendix C (me_corr)keVem.energy;em.X-rayfloatlogFt[-14.8/-12.6]? X-ray flux in the total (0.5-8.0keV) band (logFt) (1)mW.m**-2phot.flux;em.X-rayfloatnullablee_logFt[0.02/0.5] logFt uncertainty (e_logFt)mW.m**-2stat.errorfloatlogFh[-15.2/-12.7]? X-ray flux in the hard (2-8keV) band (logFh) (1)mW.m**-2phot.flux;em.X-ray.mediumfloatnullablee_logFh[0.03/0.6] logFh uncertainty (e_logFh)mW.m**-2stat.errorfloatJ/ApJ/937/46/table2X-ray-selected Trifid North member candidatesCXOUSource name (JHHMMSS.s+DDMMSS) (CXOU)meta.id;meta.maincharplxCorr[-1.62/4]? Zero-point-corrected parallax (parallax_corr)maspos.parallax.trig;arith.difffloatnullablepmRA[-6.6/1.3]? Gaia EDR3 proper motion in RA (pmRA*cosDE) (pmra_GaiaEDR3)mas/yrpos.pm;pos.eq.rafloatnullablee_pmRA[0.02/1.6]? pmRA uncertainty (e_pmra_GaiaEDR3)mas/yrstat.error;pos.pm;pos.eq.rafloatnullablepmDE[-8/2.6]? Gaia EDR3 proper motion in DEC (pmdec_GaiaEDR3)mas/yrpos.pm;pos.eq.decfloatnullablee_pmDE[0.01/1.2]? pmDE uncertainty (e_pmdec_GaiaEDR3)mas/yrstat.error;pos.pm;pos.eq.decfloatnullableGmag[11.34/20.72]? Gaia EDR3 G-band magnitude (G)magphot.mag;em.optfloatnullableBPmag[11.4/22.2]? Gaia EDR3 BP-band magnitude (BP)magphot.mag;em.opt.BfloatnullableRPmag[11.2/19.5]? Gaia EDR3 RP-band magnitude (RP)magphot.mag;em.opt.RfloatnullableRUWE[0.89/10.41]? Gaia EDR3 renormalized unit weight error (RUWE)stat.errordoublenullableepsi[0/4.2] Gaia EDR3 astrometric excess noise (aen)masstat.fit.paramdouble_RA.icrsRight ascension (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.raindexed_DE.icrsDeclination (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.decindexedrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlogNH[20/23.2]? X-ray absorption as log of hydrogen column density (lognh)cm**-2phys.columnDensityfloatnullablee_logNH[0.1/1.4]? logNH uncertainty (e_lognh)cm**-2stat.errorfloatnullablelogLx[29.5/32]? Absorption-corrected log of X-ray luminosity in the 0.5-8.0keV band in erg/slog(1e-07W)phys.luminosity;em.X-rayfloatnullablee_logLx[0.06/0.6]? logLx uncertainty (e_loglx)log(1e-07W)stat.errorfloatnullableMm[A-C] Flag indicating kinematic membership (f_mem) (1)meta.code.membercharRA_ICRS[270.47/270.73] Right ascension (ICRS) at Ep=2016.0 of the Gaia EDR3 counterpart (ra_GaiaEDR3)degpos.eq.ra;meta.mainDE_ICRS[-22.8/-22.5] Declination (ICRS) at Ep=2016.0 of the Gaia EDR3 counterpart (dec_GaiaEDR3)degpos.eq.dec;meta.mainplx[-1.7/4]? Gaia EDR3 parallax (parallax_GaiaEDR3)maspos.parallax.trigfloatnullablee_plx[0.019/2]? plx uncertainty (e_parallax_GaiaEDR3)masstat.error;pos.parallaxdoublenullableZP[-0.07/0.01]? Gaia DR3 parallax zero-point estimatemaspos.parallax.trig;arith.zpdoublenullableamax[0.029/5.5] The longest semi-major axis of the Gaia EDR3 astrometric error ellipse (sigma5d_max)masphys.angSize.smajAxisdoubleRAUdeg? Right ascension (ICRS) of the UKIDSS counterpart (ra_UKIDSS) (2)degpos.eq.ra;em.IRnullableDEUdeg? Declination (ICRS) of the UKIDSS counterpart (dec_UKIDSS) (2)degpos.eq.dec;em.IRnullableJmag[11.41/17.23]? UKIDSS J-band magnitude (J)magphot.mag;em.IR.Jfloatnullablee_Jmag[0.006/0.03]? Uncertainty on Jmag (e_J)magstat.error;phot.mag;em.IR.Jfloatnullablef_Jmag[OV] Flag on Jmag (f_J) (3)meta.codecharHmag[12.19/16.6]? UKIDSS H-band magnitude (H)magphot.mag;em.IR.Hfloatnullablee_Hmag[0.005/0.06]? Uncertainty on Hmag (e_H)magstat.error;phot.mag;em.IR.Hfloatnullablef_Hmag[O] Flag on Hmag (f_H) (3)meta.codecharKsmag[10.66/16.02]? UKIDSS Ks-band magnitude (K)magphot.mag;em.IR.Kfloatnullablee_Ksmag[0.006/0.04]? Uncertainty on Ksmag (e_K)magstat.error;phot.mag;em.IR.Kfloatnullablef_Ksmag[OV] Flag on Ksmag (f_K) (3)meta.codechar2MASS2MASS identifier (JHHMMSSss+DDMMSSs)meta.id.crosscharSSTGLMCSpitzer identifier (GLLL.llll+BB.bbbb) (Spitzer)meta.id.crosscharK13Display data from King+ 2013, J/ApJS/209/28 within 3"meta.ref.urlcharGaiaEDR3Gaia EDR3 identifier (GaiaEDR3)meta.id.crossUKIDSSDisplay data from UKIDSS-DR6 (II/316) within 3"meta.ref.urlcharJ/ApJ/937/46/table3*Revised members of Trifid MainDEJ2000[-23.12/-22.78] Declination (J2000) from Broos+ 2013, J/ApJS/209/32 (dec_MPCM)degpos.eq.dec;meta.mainrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMPCMMPCM identifier (JHHMMSS.ss+DDMMSS.s) (MPCM)meta.id;meta.maincharRAJ2000[270.46/270.8] Right ascension (J2000) from Broos+ 2013, J/ApJS/209/32 (ra_MPCM)degpos.eq.ra;meta.mainlogNH[20/24]? X-ray absorption as log of hydrogen column density (logNH)cm**-2phys.columnDensityfloatnullablee_logNH[0.09/1.3]? logNH uncertainty (e_logNH)cm**-2stat.errorfloatnullablelogLx[29.3/32]? Absorption-corrected log of X-ray luminosity in the 0.5-8.0keV bandlog(1e-07W)phys.luminosity;em.X-rayfloatnullablee_logLx[0.02/0.9]? logLx uncertainty (e_logLx)log(1e-07W)stat.errorfloatnullableMm[A] "A"=flag indicating high-confidence kinematic membership (149 occurrences) (f_kin)meta.code.errorcharGaiaEDR3? Gaia EDR3 identifier (GaiaEDR3)meta.id.crossnullableRAGdeg? Right ascension (ICRS) of the Gaia EDR3 counterpart (ra_GaiaEDR3)degpos.eq.ra;em.optnullableDEGdeg? Declination (ICRS) of the Gaia EDR3 counterpart (dec_GaiaEDR3)degpos.eq.dec;em.optnullableplx[-5/5.1]? Gaia EDR3 parallax (parallax_GaiaEDR3)maspos.parallax.trigfloatnullablee_plx[0.019/1.7]? plx uncertainty (e_parallax_GaiaEDR3)masstat.error;pos.parallaxfloatnullableZP[-0.07/0.02]? Gaia DR3 parallax zero-point estimate (zp)maspos.parallax.trig;arith.zpdoublenullableplxCorr[-5/5.1]? Zero-point-corrected parallax (parallax_corr)maspos.parallax.trig;arith.difffloatnullablepmRA[-6.2/7.7]? Gaia EDR3 proper motion in RA (pmRA*cosDE) (pmra_GaiaEDR3)mas/yrpos.pm;pos.eq.rafloatnullablee_pmRA[0.02/1.7]? pmRA uncertainty (e_pmra_GaiaEDR3)mas/yrstat.error;pos.pm;pos.eq.rafloatnullablepmDE[-9.3/5]? Gaia DR3 proper motion in DEC (pmdec_GaiaEDR3)mas/yrpos.pm;pos.eq.decfloatnullablee_pmDE[0.01/1.2]? pmDE uncertainty (e_pmdec_GaiaEDR3)mas/yrstat.error;pos.pm;pos.eq.decfloatnullableGmag[7.5/21]? Gaia EDR3 G-band magnitude (G)magphot.mag;em.optfloatnullableBPmag[7.5/22.4]? Gaia EDR3 BP-band magnitude (BP)magphot.mag;em.opt.BfloatnullableRPmag[7.4/20.7]? Gaia EDR3 RP-band magnitude (RP)magphot.mag;em.opt.RfloatnullableRUWE[0.73/32]? Gaia EDR3 renormalized unit weight error (ruwe)stat.errordoublenullableepsi[0/9]? Gaia EDR3 astrometric excess noise (aen)masstat.fit.paramdoublenullableamax[0.028/230753]? The longest semi-major axis of the Gaia EDR3 astrometric error ellipse (sigma5d_max)masphys.angSize.smajAxisdoublenullableRAUdeg? Right ascension (ICRS) of the UKIDSS counterpart (ra_ukidss)degpos.eq.ra;em.IRnullableDEUdeg? Declination (ICRS) of the UKIDSS counterpart (dec_ukidss)degpos.eq.dec;em.IRnullableJmag[11.74/24.27]? UKIDSS J-band magnitude (J_ukidss)magphot.mag;em.IR.Jfloatnullablee_Jmag[0.005/2.6]? Uncertainty on Jmag (e_J_ukidss)magstat.error;phot.mag;em.IR.Jfloatnullablef_Jmag[OV] Flag on Jmag (f_J_ukidss)meta.codecharHmag[11.48/22.73]? UKIDSS H-band magnitude (H_ukidss)magphot.mag;em.IR.Hfloatnullablee_Hmag[0.005/2.1]? Uncertainty on Hmag (e_H_ukidss)magstat.error;phot.mag;em.IR.Hfloatnullablef_Hmag[OV] Flag on Hmag (f_H_ukidss)meta.codecharKsmag[10.2/17.4]? UKIDSS Ks-band magnitude (K_ukidss)magphot.mag;em.IR.Kfloatnullablee_Ksmag[0.005/0.1]? Uncertainty on Ksmag (e_K_ukidss)magstat.error;phot.mag;em.IR.Kfloatnullablef_Ksmag[OV] Flag on Ksmag (f_K_ukidss)meta.codechar2MASS2MASS identifier (JHHMMSSss+DDMMSSs)meta.id.crosscharSSTGLMCSpitzer identifier (GLLL.llll+BB.bbbb) (Spitzer)meta.id.crosscharUKIDSSDisplay data from UKIDSS-DR6 (II/316) within 3"meta.ref.urlcharK13Display data from King+ 2013, J/ApJS/209/28 within 3"meta.ref.urlcharJ/ApJ/937/46/table4Gaia members of G7.4-0.2GaiaEDR3Gaia EDR3 identifier (GaiaEDR3)meta.id;meta.mainrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRA_ICRS[270.34/271.22] Gaia EDR3 right ascension (ICRS) (ra)degpos.eq.ra;meta.mainDE_ICRS[-23.2/-22.3] Gaia EDR3 declination (ICRS) (dec)degpos.eq.dec;meta.mainplxCorr[0.64/0.91] Zero-point-corrected parallax (parallax_corr)maspos.parallax.trigfloate_plxCorr[0.01/0.4] plxCorr uncertainty (parallax_error)masstat.error;pos.parallax.trig;arith.difffloatpmRA[0.4/0.9] Gaia EDR3 proper motion in RA (pmRA*cosDE) (pmra)mas/yrpos.pm;pos.eq.rafloate_pmRA[0.01/0.4] pmRA uncertainty (pmra_error)mas/yrstat.error;pos.pm;pos.eq.rafloatpmDE[-3/-2.3] Gaia EDR3 proper motion in DEC (pmdec)mas/yrpos.pm;pos.eq.decfloate_pmDE[0.01/0.3] pmDE uncertainty (pmdec_error)mas/yrstat.error;pos.pm;pos.eq.decfloatGmag[9.96/19.3] Gaia EDR3 G-band magnitude (phot_g_mean_mag)magphot.mag;em.optfloatBPmag[10.3/20.7]? Gaia EDR3 BP magnitude (phot_bp_mean_mag)magphot.mag;em.opt.BfloatnullableRPmag[9.4/18.2]? Gaia EDR3 RP magnitude (phot_rp_mean_mag)magphot.mag;em.opt.RfloatnullableJ/ApJ/937/46/fig18*Rectified near-infrared spectrum of the evolved massive star [GKF2010] MN68recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlambda[0.94/2.5] Wavelengthumem.wldoubleS[-1.1e-13/1.6e-12]? Flux density, in erg/s/cm^2^/{AA} unitscW.m**-2.nm**-1phot.flux.density;em.IRdoublenullablee_S[6.6e-18/1.2e-10]? Error in ScW.m**-2.nm**-1stat.error;phot.flux.density;em.IRdoublenullable