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J/MNRAS/460/2526    Dwarf novae outbursts properties  (Otulakowska-Hypka+, 2016)

Statistical analysis of properties of dwarf novae outbursts. Otulakowska-Hypka M., Olech A., Patterson J. <Mon. Not. R. Astron. Soc., 460, 2526-2541 (2016)> =2016MNRAS.460.2526O (SIMBAD/NED BibCode)
ADC_Keywords: Novae ; Binaries, cataclysmic ; Photometry ; Stars, masses Keywords: binaries: close - stars: dwarf novae - stars: evolution - novae, cataclysmic variables Abstract: We present a statistical study of all measurable photometric features of a large sample of dwarf novae during their outbursts and superoutbursts. We used all accessible photometric data for all our objects to make the study as complete and up to date as possible. Our aim was to check correlations between these photometric features in order to constrain theoretical models which try to explain the nature of dwarf novae outbursts. We managed to confirm a few of the known correlations, that is the Stolz and Schoembs relation, the Bailey relation for long outbursts above the period gap, the relations between the cycle and supercycle lengths, amplitudes of normal and superoutbursts, amplitude and duration of superoutbursts, outburst duration and orbital period, outburst duration and mass ratio for short and normal outbursts, as well as the relation between the rise and decline rates of superoutbursts. However, we question the existence of the Kukarkin-Parenago relation but we found an analogous relation for superoutbursts. We also failed to find one presumed relation between outburst duration and mass ratio for superoutbursts. This study should help to direct theoretical work dedicated to dwarf novae. Description: In this study, we used the following available catalogue data sources. The catalogue and atlas of CVs ( by Downes et al. (2001PASP..113..764D, Cat. V/123) which contains 1830 objects that have been classified as a CV before 2006 February 1, when the catalogue was frozen. Catalogue of cataclysmic binaries, low-mass X-ray binaries and related objects ( by Ritter & Kolb (2003A&A...404..301R, Cat. B/cb). Although the reference corresponds to a catalogue which is over 10yr old, its newest edition 7.21 (2013 December 31) has been used in this study. This catalogue contains 1094 CVs. Catalogue of J. Patterson, that is the supplementary electronic material to the publication Patterson (2011) containing properties of 292 non-magnetic CVs with orbital periods smaller than 3h ( File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 220 653 Properties of dwarf novae outbursts
See also: B/cb : Cataclysmic Binaries, LMXBs, and related objects (Ritter+, 2004) V/123 : Catalog of Cataclysmic Variables (Downes+ 2001-2006) Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 15 A15 --- Name GCVS name of the dwarf nova 17- 18 I2 h RAh Right ascension (J2000) 20- 21 I2 min RAm Right ascension (J2000) 23- 27 F5.2 s RAs Right ascension (J2000) 29 A1 --- DE- Declination sign (J2000) 30- 31 I2 deg DEd Declination (J2000) 33- 34 I2 arcmin DEm Declination (J2000) 36- 39 F4.1 arcsec DEs Declination (J2000) 41- 43 A3 --- Type1 Type2 from the catalogue of Ritter & Kolb (2003A&A...404..301R, Cat. B/cb) (its Type1 was 'dwarf nova') 45- 47 A3 --- Type2 Type3 from the catalogue of Ritter & Kolb (2003A&A...404..301R, Cat. B/cb) 49- 55 A7 --- Type3 VarType from the catalogue of Downes et al. (2001PASP..113..764D, Cat. V/123), for comparison 57- 61 F5.2 mag Vmin ?=- Maximum brightness of DN stars in minimum 63- 67 F5.2 mag VNO ?=- Maximum brightness of normal outburst of SU UMa stars or maximum brightness of short outbursts of U Gem and Z Cam stars 69- 73 F5.2 mag VSO ?=- Maximum brightness of superoutburst of SU UMa stars or maximum brightness of long outbursts of U Gem or standstill of Z Cam stars (to maintain consistency with Ritter & Kolb, 2003, Cat. B/cb) 75- 79 F5.2 mag Vsqw ?=- Apparent V magnitudes of the sq.w 81- 84 F4.1 d DNO ?=- Duration of a normal outburst of SU UMa stars or a short outburst of U Gem and Z Cam stars 86- 89 F4.1 d DR ?=- Duration of a rise of an outburst 91- 94 F4.1 d DP ?=- Duration of the plateau phase 96- 99 F4.1 d DD ?=- Duration of an outburst's decline 101-104 F4.1 d Dsqw ?=- Duration of the sq.w. 106-111 F6.1 d Psc ?=- Minimal value of supercycle length (1) 113-118 F6.1 d Pscmax ?=- Maximal value of supercycle length (1) 120-124 F5.1 d Pc ?=- Minimal value of normal cycle length (2) 126-131 F6.1 d Pcmax ?=- Maximal value of normal cycle length (2) 133-135 F3.1 --- pre [1/2]?=- Precursor's presence 137-145 F9.7 d Porb ?=- Orbital period 147 A1 --- u_Porb [*:] Uncertainty flag on Porb 149-156 F8.6 d Psh ?=- Superhump period 158 A1 --- u_Psh [*:] Uncertainty flag on Psh 160-163 F4.1 deg incl ?=- Inclination 165-168 F4.1 deg e_incl ?=- rms uncertainty in incl 170-174 F5.2 --- M1/M2 ?=- Mass ratio M1/M2 from the catalogue of Ritter & Kolb (2003, Cat. B/cb) 176-179 F4.2 --- e_M1/M2 ?=- rms uncertainty on M1/M2 181-191 F11.9 --- q ?=- Mass ratio, q = M2/M1 193-197 F5.3 --- qJP ?=- Mass ratio from Patterson (2011MNRAS.411.2695P) 199-220 E22.18 --- qCalc ?=- Mass ratio calculated from the superhump period excess with the use of equations (2) and (3) of the paper
Note (1): that is a time interval between two subsequent long outbursts for U Gem and Z Cam stars, or two subsequent superoutbursts for SU UMa stars Note (2): that is a time interval between two subsequent short outbursts for U Gem and Z Cam stars, or two subsequent normal outbursts for SU UMa stars.
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(End) Patricia Vannier [CDS] 17-Nov-2017
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