E r u p t i v e s t a r s s p e c t r o s c o p y

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  • ARASEruptiveStarsInformationLetter#13|20150228|1/48

    EruptivestarsspectroscopyCataclysmics,Symbiotics,Novae,Supernovae

    Novae p.28

    NovaCyg2014NovaCen2013UngoingobservationsNovaDel2013rsisinginthemorningskyNovaSco2015NovaSgr2015SpectraobtainedbyC.Buil

    Symbiotics p.922

    SurveyofV694MonCHCygnicampaign:fisrtspectrumofthenewseasonthe1thofmarch(seenextissue)

    Cataclysmics p.2327

    SSAurinoutburst:acompletecoverageoftheoutburstin FebruarybyP.SomgogyiandJ.Guarro

    UGemoutburstlateFebruary

    NotesfromSteveshore: p.2831

    Recentpublicationsabouteruptivestars p.3234

    Extra:Catseyenebulaspectroscopy,150yearsafterHuggins,byOlivierThizy p.3547

    ARASEruptiveStarsInformationlettern14#20150228022015

    ARASWebpagehttp://www.astrosurf.com/aras/

    ARASForumhttp://www.spectroaras.com/forum/

    ARASlisthttps://groups.yahoo.com/neo/groups/spectrol/info

    ARASpreliminarydatabasehttp://www.astrosurf.com/aras/Aras_DataBase/DataBase.htm

    ARASBeAMhttp://arasbeam.free.fr/?lang=en

    ARAS Spectroscopy

    Contents

    Acknowledgements:VbandlightcurvesfromAAVSOphotometricdatabase

    ObservationsofFebruary2015

    Authors:F.Teyssier,S.Shore,A.Skopal,P.Somogyi,D.Boyd,J.Edlin,J.Guarro,FranckBoubault

    News

    Twonovaediscoveredinfebruary

    NovaSco2015=PNVJ1703262035041402015February11.837UTatmag8.1byTadashiKojima

    NovaSgr2015=PNVJ1814251425543432015 February 12.840 atmag 11.2byHideoNishimura,KoichiNishiyamaandFujioKabashima

  • ARASEruptiveStarsInformationLetter#13|20150228|2/48

    NOVAE

    ARASDATABASE:http://www.astrosurf.com/aras/Aras_DataBase/Novae.htm

    Nova Del 2013 V339 Del Maximum 14-08-2013Days after maximum 564Current mag V 13Delta mag V 8.6

    Nova Cyg 2014 V2659 Del Maximum 09-04-2014Days after maximum 326Current mag V 13.3Delta mag V 3.9

    Statusofcurrentnovae1/2

    Nova Cen 2013 V1369 CenMaximum 14-12-2013Days after maximum 442Current mag V 9.5Delta mag V 6

    NospectruminFebruary

  • ARASEruptiveStarsInformationLetter#13|20150228|3/48

    NOVAE

    ARASDATABASE:http://www.astrosurf.com/aras/Aras_DataBase/Novae.htm

    Nova Sco 2015Maximum 12-02-2015Days after maximum 17Current mag V 11.5Delta mag V 2.2

    NovaSgr 2015Maximum 15-02-2015Days after maximum 14Current mag V 10.9Delta mag V 1.6

    Statusofcurrentnovae2/2

  • ARASEruptiveStarsInformationLetter#13|20150228|4/48

    NOVAE

    NovaCyg2014=V2659Cyg

    LuminosityMagV=13.3(30012015)Slowdecline

    SpectroscopyNovaCyginnebularphase

    Observers: TimLester|ChristianBuil|PaulGerlach|OlivierGarde|FranoisTeyssier|JacquesMontier|AntonioGarcia|JoanGuarroPaoloBerardi|FranckBoubault|PeterSomogyi|MiguelRodriguez|F.Boubault|O.Thizy|D.Boyd|J.Edlin

    ARASDATABASE:210spectrahttp://www.astrosurf.com/aras/Aras_DataBase/Novae/NovaCyg2014.htmWebPage:http://www.astrosurf.com/aras/novae/NovaCyg2014.html

    SpectroscopyNebularspectrumwithnoticelly[OII]stillintenseSeealso:[NII]appearsintheredpartofHalpha

    Wavelenght()

  • ARASEruptiveStarsInformationLetter#13|20150228|5/48

    NOVAE

    NovaCen2013=V1369Cyg

    LuminosityMagV=9.5(28022015)Slowdecline

    SpectroscopyNovaCeninnebularphase

    CroponHalphaprofileNote[NII]6548and6583intheblueandredpartofHa

    TerryBohlsen07022015LISAR=1000

  • ARASEruptiveStarsInformationLetter#13|20150228|6/48

    NOVAE

    NovaSco2015(NovaSco2015=PNVJ170326203504140

    Luminosity

    ThemaximumluminosityinAAVSOdatabaseisobservedonFebruary,12th(JD=2457065.9)atmagV=9.3.

    t2~10days(V=11.3onJD=2457075.9)

    TheAstronomersTelegram#7060NovaSco2015=PNVJ170326203504140

    ATel#7060FrederickWalter(StonyBrookUniversity)on13Feb2015;19:39UT

    An observationwith the Chiron Echelle Spectrograph on the SMARTS/CTIO1.5mon2015February13at09:38UTconfirmsthatthisobject,reportedbyP.Schmeerinvsnetalert18276on11February,isanova.Halphahasanequivalentwidthof 14nm and an FHWH ~2000 km/s. There are symmetricallydisplacedemissionfeaturesatabout+/4500km/swhichresemblethoseseenin fastHeN novae.Halpha andHbeta show P Cyg absorption features atabout4200,3200,and2300km/s.OI777nmand845nmareinemission.Astrongemissionlineat588nmwithaprominentPCygabsorptioniseitherHeI587nmormodestlyblueshiftedNa I.Broad(2000km/sFWZI)He I706nmemissionmaybepresent.SimilarlybroademissionisseenintheprominentFeIImultiplet42 linesat492,502,and517nm,thoughthefirsttwomayhavesomeHeIcontribution.TheapparentlyrapidfadingandbrightpossiblenearIRcounterpart(P.Schmeer,followuptovsnetalert18276)suggestthisisasystem

    NovaSco2015alsodetectedinXraySeepage

    ChristianBuilLhires600l/mmR~2500

    HalphaFWHM~1500km/sEW~31nm

    NotetheasymmetryofHeIlines

  • ARASEruptiveStarsInformationLetter#13|20150228|7/48

    NOVAE

    NovaSco2015(NovaSco2015=PNVJ170326203504140

    ChristianBuilAlpy600+T200R~700

  • ARASEruptiveStarsInformationLetter#13|20150228|8/48

    NOVAE

    NovaSgr2015(NovaSgr2015=PNVJ181425142554343)

    ChristianBuilAlpy600+T200R~700

    TheAstronomersTelegram

    SpectroscopicConfirmationandsomePhotometryofNovaSgr2015=PNVJ181425142554343

    ATel#7101;FrederickWalter(StonyBrookUniversity)

    Anobservationwith theChironEchelle Spectrographon theSMARTS/CTIO 1.5m, together with SMARTS 1.3m AndicamBVRIJHKphotometryindicatethatthisobjectisaclassicalFeIInovanearmaximum.Photometryonthenightsof2015February1317showsthatthebrightnesspeaked inB(10.4)andV(9.7)betweenMJD57069and57070,inR(9.0)andI(8.8)aboutMJD57071.0,andcontinuestoincreasethroughMJD57071.9atJHK.TheR=28000spectrum,obtained2015February16at09:40UT,showsnarrowPCyg linesofFe II,N I,N II,O I,andHalphaandHbeta.Assumingnegligibleintrinsicradialvelocity,thepeakabsorptionopacityisabout100km/s,withmaximum wind velocities near 500 km/s. At this time(premaximum), the Halpha emission equivalentwidthwas0.7nm,withaFWHMof300km/s.SomeplotsareavailableonSMARTSnovaatlaswebpage(linkbelow).

  • ARASEruptiveStarsInformationLetter#13|20150228|9/48

    ARASDATABASE|http://www.astrosurf.com/aras/Aras_DataBase/Symbiotics.htm

    Symbiotics

    Selected list of bright symbiotics stars of interest

    MagV*:01042014

    Observing

    CHCygnicampaignEspeciallyhighresolutionHalphaSeeInformationLetter#11

    DetecthighstateofV694Mon

    SymbioticnovaASASJ1746002321.3SeeAAVSONoticepage

    Inthemorningsky:AGDraTCrBYYHerV443HerBFCygCICyg

    Star Nb. spectraAG Dra 2AX Per 5BX Mon 3CI Cyg 2CH Cyg 1EG And 1NQ Gem 3T CrB 3Tx CVn 1UV Aur 2YY Her 3V443 Her 2V694 Mon 17Z And 2ZZ CMi 2

    SymbioticstarsobservedinFebruary,2015

  • ARASEruptiveStarsInformationLetter#13|20150228|10/48

    ARASDATABASE|http://www.astrosurf.com/aras/Aras_DataBase/Symbiotics.htm

    CHCygnicampaignSymbiotics

    Coordinates(2000.0)

    R.A. 192433.0

    Dec. +501429.1

    CHCygniisnowvisibleinthemorningskyThecampaignisfocusedonHavariationsatR=10000LowresolutionspectraarealsousefulSeedetailsforthecampaignpage

    CHCygatlowresolutionF.TeyssierLISAR=100028022015

  • ARASEruptiveStarsInformationLetter#13|20150228|11/48

    ARASDATABASE|http://www.astrosurf.com/aras/Aras_DataBase/Symbiotics.htm

    CHCygnicampaignSymbiotics

    Coordinates(2000.0)

    R.A. 192433.0

    Dec. +501429.1

    CommentsfromDrAugustinSkopal

    Thespectrum clearlyshowscontinuingactivityofCHCyg.Aflatcontinuumfor lambda

  • ARASEruptiveStarsInformationLetter#13|20150228|12/48

    ARASDATABASE|http://www.astrosurf.com/aras/Aras_DataBase/Symbiotics.htm

    AXPerOutburstSymbiotics

    TheprototypeSymbioticAXPerhasbeendetectedinoutburstinaugust2014byANScollaborationSeeATel#6382

    AXPerentersintoeclipseofthehotcomponentThecurrentVmagisabout12.5(declining)

    ARASdatabaseDataBaseAXPer

    Coordinates(2000.0)

    R.A. 01h36m22.7s

    Dec. +54152.5

  • ARASEruptiveStarsInformationLetter#13|20150228|13/48

    ARASDATABASE|http://www.astrosurf.com/aras/Aras_DataBase/Symbiotics.htm

    AXPerOutburstSymbiotics

    MeasurementsfromspectraR=1000ofthedatabase

    Horizontalaxis=phaseaccordingtoEphemeris:Phase=2447551.26+680.86*N13Datafrom2014,Augustto2015,February

    Temperatureofthehotcomponent(K)increasesasthepseudophotosphereofthewhitedwarfcontracts

    Electronictemperature(K)using[OIII](5007+4959)/[OIII]4363ratio

    AbsolutefluxofFe6+lines:increasingwiththehardeningoftheradiationfromhotcomponent

  • ARASEruptiveStarsInformationLetter#13|20150228|14/48

    ARASDATABASE|http://www.astrosurf.com/aras/Aras_DataBase/Symbiotics.htm

    V694Mon=MWC560Symbiotics

    Coordinates(2000.0)

    R.A. 07h25m51.2s

    Dec. 074408

    Observing:detecthighstateDailycoverageshouldbemust!

    Spectroscopy:ungoinghighactivityatthebeginningofFebruary,returnstolowstatemidFebruary

    AAVSOVbandlightcurve

    DavidBoydFluxcalibratedspectraLISAR=1000

  • ARASEruptiveStarsInformationLetter#13|20150228|15/48

    ARASDATABASE|http://www.astrosurf.com/aras/Aras_DataBase/Symbiotics.htm

    V694Mon=MWC560Symbiotics

    Velocity(km/s)

    20150209.85920150301.073

    20150209.85920150301.073

    Comparisonofspectrafromc.Buil(20150209)andT.Lester(20150301)atR=9000

    Themaximumvelocitydeclinesfromabout2500to1200km/sThenarrowlinesareFeII6457and6518fromtheaccretiondisk

  • ARASEruptiveStarsInformationLetter#13|20150228|16/48

    ARASDATABASE|http://www.astrosurf.com/aras/Aras_DataBase/Symbiotics.htm

    V694Mon=MWC560Symbiotics

    20150209.85920150309.871

    ComparisonohhighresolutionR=9000(C.Buil)andlowresolutionR=1000(D.Boyd)thesameday

    Thelowres.Spectraallowsthemeasureofthemaximumvelocityoftheabsorption.

    F.TeyssierLISAR=1000ComparisonoftheabsorptionsofFeII(42)linesInthe6thofFebruaryspectrum,theabsorptionsarewelldetached