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E R U P T I V E S T a R S S P E C T R O S C O Erupti ve stars spectroscopy Catacl ys mics, Sy mbi otics, Novae, Supernovae ARAS Eruptive Stars Information letter n° 12 31‐12‐2014 Observations of December 2014 Contents NEWS Novae Symbiotic star Hen 2‐468 Nova Cyg 2014 nebular phase (= V2428 Cyg) Nova Cen 2013 reappears in the morning light detected in ouburst at mag 13 Nova Del 2013 nebular phase, slowly declining by U. Munari & al. (Atel # 6841) 5 novae in 2014 Symbiotics Observations of CH Cygni AX Per returns to quiescent state Survey of V694 Mon, currently in stable state Notes from Steve Shore Balmer line formation and variations and a comment on abundance determinations The hydrogen lines in symbiotic spectra A start on abundance determinations Recent publications about eruptive stars Observing ARAS Spectroscopy Long term survey of CH Cygni ( Dr A. Skopal ) ARAS Web page http://www.astrosurf.com/aras/ ARAS Forum http://www.spectro‐aras.com/forum/ ARAS list https://groups.yahoo.com/neo/groups/sp Acknowledgements : ectro‐l/info V band light curves from AAVSO photometric data base ARAS preliminary data base http://www.astrosurf.com/aras/Aras_Data Authors : Base/DataBase.htm F. Teyssier, P. Somogyi, P. Berardi, D. Boyd, J. Edlin, ARAS BeAM J. Guarro, T. Lester, J. Montier http://arasbeam.free.fr/?lang=en ARAS Eruptive Stars Information Letter #12 | 2014‐12‐31 | 1 / 28 N O Status of current novae V A Nova Del 2013 V339 Del Maximum 14-08-2013 E Days after maximum 504 Current mag V 12.9 Delta mag V 8.5 Nova Cyg 2014 V2659 Del Maximum 09-04-2014 Days after maximum 266 Current mag V 13.2 Delta mag V 3.8 Nova Cen 2013 V1369 Cen Maximum 14-12-2013 Days after maximum 382 Current mag V 9.1 Delta mag V 5.8 ARAS DATA BASE : http://www.astrosurf.com/aras/Aras_DataBase/Novae.htm ARAS Eruptive Stars Information Letter #12 | 2014‐12‐31 | 2 / 28 N Nova Cyg 2014 = V2659 Cyg O Luminosity V Mag V = 12.9 (30‐12‐2014) A Slow decline E Spectroscopy Nova Cyg in nebular phase Photometry Slow decline during the nebular phase (0.4 mag / 100 days) Observing : ungoing observations during nebular phase Dark squares : AAVSO Green squares : Antonio Garcia and Joan Guarro Spectroscopy Nebular spectrum with noticelly [OII] intense Observers : Tim Lester | Christian Buil | Paul Gerlach | Olivier Garde | François Teyssier | Jacques Montier | Antonio Garcia | Joan Guarro Paolo Berardi | Franck Boubault | Peter Somogyi | Miguel Rodriguez | F. Boubault | O. Thizy ARAS DATA BASE : 209 spectra http://www.astrosurf.com/aras/Aras_DataBase/Novae/Nova‐Cyg‐2014.htm Web Page : http://www.astrosurf.com/aras/novae/NovaCyg2014.html ARAS Eruptive Stars Information Letter #12 | 2014‐12‐31 | 3 / 28 N Nova Cyg 2014 evolution in December 2014 O V A E F. Teyssier LISA R=1000 Evolution of the nova during december Ha alpha intensity decline more than other lines. [O III] as strong as H alpha which declined more than other lines. ARAS Eruptive Stars Information Letter #12 | 2014‐12‐31 | 4 / 28 N Nova Del 2013 = V339 Del O V A Luminosity Mag V ~ 12.8 (31‐12‐2014) E Slowly declining Observing Spectra required (one a week) Ungoing observations, 500 days after its outburst Very slow evolution during the nebular phase ( 1 year) Observers (2014) : C. Buil ‐ T. Lester ‐ F. Teyssier ‐ D. Boyd ‐ A. Garcia O. Garde ‐ T. Bohlsen ‐ P. Berardi ‐ M. Dubs ‐ P. Dubreuil ‐ J. Edlin ‐ T. Bohlsen ARAS DATA BASE 2014 | 34 spectra| http://www.astrosurf.com/aras/Aras_DataBase/Novae/Nova‐Del‐2013_2.htm ARAS Web Page for Nova Del 2013 : http://www.astrosurf.com/aras/novae/Nova2013Del.html ARAS Eruptive Stars Information Letter #12 | 2014‐12‐31 | 5 / 28 N 2014 Novae O V Discovery Mag #Nova Name GCVS A.D. Dec. ARAS Spectra A Date Max (V) E 1Nova Sgr 2014 PNV J18250860‐2236024 V5666 Sgr 18 25 08.60 ‐22 36 02.4 26/01/2014 9.9 2 2V745 Sco RN V745 Sco 17 55 22.27 ‐33 14 58.5 06/02/2014 10 3Nova Cep 2014 TCP J20542386+6017077 V962 Cep 20 54 23.86 +60 17 07.7 08/03/2014 11.1 15 4Nova Sco 2014 TCP J17154683‐3128303 17 15 46.83 ‐31 28 30.3 26/03/2014 12.1 5Nova Cyg 2014 PNV J20214234+3103296 V2659 Cyg 20 21 42.34 +31 03 29.6 31/03/2014 9.4 210 ARAS DATA BASE 2014 | 34 spectra| http://www.astrosurf.com/aras/Aras_DataBase/Novae/Nova‐Del‐2013_2.htm ARAS Web Page for Nova Del 2013 : http://www.astrosurf.com/aras/novae/Nova2013Del.html ARAS Eruptive Stars Information Letter #12 | 2014‐12‐31 | 6 / 28 N 2014 Novae O V A E ARAS Eruptive Stars Information Letter #12 | 2014‐12‐31 | 7 / 28 S Selected list of bright symbiotics stars of interest y m b i o t i c s Mag V * : 01‐04‐2014 Observations New spectra from 01‐12 to 31‐12 AG Dra 1 AG Peg 7 AX Per 9 BD Cam 3 BF Cyg 1 BX Mon 2 Observing CH Cyg 5 CH Cygni campaign CI Cyg 5 See Information Letter #11 EG And 1 NQ Gem 1 AX Per returning to quiescent state o Cet 2 Detect high state of V694 Mon in R Aqr 4 the morning sky UV Aur 3 Follow R Aqr during a pulse period V694 Mon 4 of the Mira Z And 5 ARAS DATA BASE | http://www.astrosurf.com/aras/Aras_DataBase/Symbiotics.htm ARAS Eruptive Stars Information Letter #12 | 2014‐12‐31 | 8 / 28 S CH Cygni campaign y m Coordinates (2000.0) b R.A. 19 24 33.0 i Dec. +50 14 29.1 o t See details for the campaign i page c s B and V light curves in AAVSO database CH Cyg at low resolution ‐ P. Somogyi ‐ Alpy600 ‐ R = 100 ‐ 13‐12‐2014 ARAS DATA BASE | http://www.astrosurf.com/aras/Aras_DataBase/Symbiotics.htm ARAS Eruptive Stars Information Letter #12 | 2014‐12‐31 | 9 / 28 S CH Cygni y m Tim Lester’s spectra at R ~ 9000 b i o t i c s Velocity (km.s‐1) H profile on 2d and 19th of december, 2014 The spectra are corrected for radial velocity of the star (‐59.9 km.s‐1) according to Hinckle & al. (2009) and heliocentric velocity (resp. ‐9.2 and ‐7.4 km.s‐1) Velocity (km.s‐1) Comparison of H and H profiles (resp. 4th and 2d of december, 2014) ARAS DATA BASE | http://www.astrosurf.com/aras/Aras_DataBase/Symbiotics.htm ARAS Eruptive Stars Information Letter #12 | 2014‐12‐31 | 10 / 28 S CH Cygni campaign y m b i o t i c s 9000 ~ R ‐ II] [N 2014 ‐ 12 weak ‐ 02 ‐ and 6363 Lester Tim 6300, ‐ I] alpha [O H ARAS Eruptive Stars Information Letter #12 | 2014‐12‐31 | 11 / 28 S CH Cygni campaign y m b i o Fe II 5316.6 t Fe II 5276.0 i c Fe II 5234.6 s Fe II 5197.6 Fe II 5169 He I 5015.7 + Fe II 5018.4 [O III] 5007 [O III] 4959 (1988) He I 4921.9 Fe II 4923.9 Hack [Fe II] 4905 [Fe II] 4890 and 983) ( [Fe II] 4815.5 al. & Kaler [Fe II] 4728.0 following Fe II 4666.8 Fe II 4629.3 Fe II 4620.5 9000 Fe II 4582.8 4583.8 ~ R Fe II 4555.9 Identification ‐ Fe II 4449.5 ‐ Fe II 4520.2 Fe II 4515.3 2014 lines ‐ 12 Fe II 4491.4 [Fe II] 4492.6 II] ‐ He I 4471 04 [Fe II] 4458.0 [Fe [Fe II] 4452.1 ‐ and II Lester Fe [Fe II] 4359.3 Tim [Fe II] 4352.8 ‐ béta Numerous H ARAS Eruptive Stars Information Letter #12 | 2014‐12‐31 | 12 / 28 S AX Per Outburst y m The prototype Symbiotic AX Per has been b detected in outburst in august 2014 by ANS collaboration See ATel #6382 i The current mag is about 10.9 (declining) o Spectra of this event are welcome for ARAS t data base Data Base AX Per Aras topic for exchanges Forum i c s Coordinates (2000.0) R.A. 01 h 36 m 22.7 s Dec. +54° 15’ 2.5” Mag ~ 11.4 31‐12‐2014 ARAS DATA BASE | http://www.astrosurf.com/aras/Aras_DataBase/Symbiotics.htm ARAS Eruptive Stars Information Letter #12 | 2014‐12‐31 | 13 / 28 S R Aqr y Coordinates (2000.0) m R.A. 07 h 25 m 51.2 s b i Dec. ‐07° 44’ 08” o Mag V = 7 to 11 t Period (Mira) = 387 d i Current V mag = 9.5 c s Observing : along a Mira pulsation ARAS DATA BASE | http://www.astrosurf.com/aras/Aras_DataBase/Symbiotics.htm ARAS Eruptive Stars Information Letter #12 | 2014‐12‐31 | 14 / 28 S AG Dra | AG Peg | AX Per y m b i o t i c s ARAS DATA BASE | http://www.astrosurf.com/aras/Aras_DataBase/Symbiotics.htm ARAS Eruptive Stars Information Letter #12 | 2014‐12‐31 | 15 / 28 S BD Cam | BF Cyg | BX Mon | y m b i o t i c s ARAS DATA BASE | http://www.astrosurf.com/aras/Aras_DataBase/Symbiotics.htm ARAS Eruptive Stars Information Letter #12 | 2014‐12‐31 | 16 / 28 S CI Cyg | EG And | NQ Gem y m b i o t i c s ARAS DATA BASE | http://www.astrosurf.com/aras/Aras_DataBase/Symbiotics.htm ARAS Eruptive Stars Information Letter #12 | 2014‐12‐31 | 17 / 28 S o Cet (Mira) | R Aqr y m b i o t i c s ARAS DATA BASE | http://www.astrosurf.com/aras/Aras_DataBase/Symbiotics.htm ARAS Eruptive Stars Information Letter #12 | 2014‐12‐31 | 18 / 28 S V 694 Mon | Z And | ZZ CMi y m b i o t i c s ARAS DATA BASE | http://www.astrosurf.com/aras/Aras_DataBase/Symbiotics.htm ARAS Eruptive Stars Information Letter #12 | 2014‐12‐31 | 19 / 28 S Request for observations of the symbiotic star CH Cygni (Dr A.
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