2010A&A...516A..54I


Query : 2010A&A...516A..54I

2010A&A...516A..54I - Astronomy and Astrophysics, volume 516, A54-54 (2010/6-2)

Spectral evolution of the extremely fast classical nova V838 Herculis.

IIJIMA T. and CASSATELLA A.

Abstract (from CDS):

Spectral evolution of nova V838 Her 1991 was monitored at Asiago Astrophysical Observatory from 1991 March 31 to July 2. The spectra in the early decline stage showed emission lines of HI, HeI, HeII, NII, NIII, CII, CIII, CIV, SiII, [SIII], [NeIII], and FeII, where some identifications are different from those reported in the previous works. The emission lines of [NeIII] and carbon ions were unusually intense. New emission peaks appeared at the blue-ward edges of the emission lines of HI and HeI about one week after maximum luminosity. It seems that a new clump of gas was ejected at that time along the line of sight towards us. The helium abundance is estimated at N(He)=0.11±0.01.

Abstract Copyright:

Journal keyword(s): stars: individual: V838 Her - novae, cataclysmic variables - ISM: general

Simbad objects: 3

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Number of rows : 3
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 V* CP Pup No* 08 11 46.0634106720 -35 21 04.986480708   15.436 15.227     ~ 255 1
2 IC 4665 27 * 17 43 55.8394428292 +05 24 48.245014179   10.46 10.21     A3V 75 0
3 V* V838 Her No* 18 46 31.4714863335 +12 14 02.104189516           ~ 284 0

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2023.02.04-01:01:30

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