2012A&A...544A..26I


C.D.S. - SIMBAD4 rel 1.7 - 2021.02.24CET22:59:15

2012A&A...544A..26I - Astronomy and Astrophysics, volume 544A, 26-26 (2012/8-1)

Spectroscopic observations of the recurrent nova CI Aquilae during the 2000 outburst.

IIJIMA T.

Abstract (from CDS):

High- and low-resolution optical spectra of CI Aql were obtained during the outburst in 2000. Multiple absorption components of H I and FeII lines were detected at the early decline stage. Their radial velocities were roughly -2500km/s, -2200km/s, -1700km/s, and -1400km/s, among which only the last components were likely still accelerating during the early decline stage. Prominent emission lines of [OIII] and [NII] appeared about one month after light maximum. The duration of the nebular stage, however, was only one month and a few weeks. The ejected gas shells seem to have started to shrink about 70 days after light maximum. The amount of interstellar extinction is estimated to be E(B-V)=0.92±0.15 from the equivalent widths of the diffuse interstellar absorption bands. The helium abundance in the ejecta is estimated to be N(He)=0.19±0.05 and the mass of the ejecta to be about 2x10–6M. This object has been classified as a U Sco type recurrent nova, but its spectral evolution during the outburst resembled those of T Pyx type recurrent novae. It is doubtful whether the peak of mV≃9mag on 2000 May 5 was the true light maximum or an earlier brighter peak had been overlooked, because the spectral data suggest that the ejections of gas shells occurred prior to the discovery of the outburst on 2000 April 28.

Abstract Copyright:

Journal keyword(s): stars: individual: CI Aql - novae, cataclysmic variables

VizieR on-line data: <Available at CDS (J/A+A/544/A26): table1.dat ciaql001.dat ciaql002.dat ciaql003.dat ciaql004.dat ciaql005.dat ciaql006.dat ciaql007.dat fits/*>

CDS comments: Paragraph 8 V4745 Sco is a probable misprint for V4745 Sgr.

Simbad objects: 12

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Number of rows : 12

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 NOVA LMC 1968 No* 05 09 58.40 -71 39 52.7   16.0   17.0 17.38 ~ 69 0
2 NOVA Pyx 1890 No* 09 04 41.5062068236 -32 22 47.503345173   7.0       ~ 387 1
3 NOVA Nor 1920 No* 15 39 26.465 -52 19 17.99           ~ 76 0
4 V* T CrB Sy* 15 59 30.1619486506 +25 55 12.607985109   11.516 10.247 9.70   M3IIIe_sh 660 0
5 NOVA Sco 1863 No* 16 22 30.7782086963 -17 52 43.162570042   8.80 8.70     F8+K2 475 0
6 V* RS Oph No* 17 50 13.1592776879 -06 42 28.481553668   12.29 4.30     OB+M2ep 939 0
7 NOVA CrA 1987 No* 18 00 25.97 -39 00 35.1           ~ 125 0
8 NOVA Sgr 2003 No* 18 40 02.54 -33 26 55.1           ~ 53 0
9 NOVA Aql 1917 No* 18 52 03.5647265171 -01 28 39.191180908           ~ 147 0
10 NAME Sgr Arm PoG 19 00 -30.0           ~ 542 1
11 * 58 Aql * 19 54 44.7954348711 +00 16 25.053387202   5.703 5.631     B9IV 198 0
12 V* RR Tel Sy* 20 04 18.5382966387 -55 43 33.154224077 9.93 11.33 10.81     WN3-6.5+M3.5-7 518 0

    Equat.    Gal    SGal    Ecl

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2021.02.24-22:59:15

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