J/MNRAS/465/4968 Cataclysmic variables observations (Hardy+, 2017)
Hunting for eclipses: high-speed observations of cataclysmic variables.
Hardy L.K., Mcallister M.J., Dhillon V.S., Littlefair S.P., Bours M.C.P.,
Breedt E., Butterley T., Chakpor A., Irawati P., Kerry P., Marsh T.R.,
Parsons S.G., Savoury C.D.J., Wilson R.W., Woudt P.A.
<Mon. Not. R. Astron. Soc., 465, 4968-4984 (2017)>
=2017MNRAS.465.4968H 2017MNRAS.465.4968H (SIMBAD/NED BibCode)
ADC_Keywords: Binaries, eclipsing ; Binaries, cataclysmic ; Photometry
Keywords: binaries: close - binaries: eclipsing - stars: dwarf novae - novae -
cataclysmic variables
Abstract:
We present new time-resolved photometry of 74 cataclysmic variables
(CVs), 47 of which are eclipsing. Thirteen of these eclipsing systems
are newly discovered. For all 47 eclipsing systems, we show high
cadence (1-20s) light curves obtained with the high-speed cameras
ULTRACAM and ULTRASPEC. We provide new or refined ephemerides, and
supply mid-eclipse times for all observed eclipses. We assess the
potential for light-curve modelling of all 47 eclipsing systems to
determine their system parameters, finding 20 systems that appear to
be suitable for future study. Systems of particular interest include
V713 Cep, in which we observed a temporary switching-off of accretion;
and ASASSN-14mv and CSS111019:233313-155744, which both have orbital
periods well below the CV period minimum. The short orbital periods
and light-curve shapes suggest that they may be double degenerate (AM
CVn) systems or CVs with evolved donor stars.
Description:
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
stars.dat 78 74 List of studied stars
table1.dat 117 506 Journal of Observations
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Byte-by-byte Description of file: stars.dat
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Bytes Format Units Label Explanations
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1- 24 A24 --- Name Object name
26- 27 I2 h RAh Simbad right ascension (J2000)
29- 30 I2 min RAm Simbad right ascension (J2000)
32- 36 F5.2 s RAs Simbad right ascension (J2000)
38 A1 --- DE- Simbad declination sign (J2000)
39- 40 I2 deg DEd Simbad declination (J2000)
42- 43 I2 arcmin DEm Simbad declination (J2000)
45- 48 F4.1 arcsec DEs Simbad declination (J2000)
50- 78 A29 --- SName Simbad name
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 24 A24 --- Name Object name
26- 36 F11.5 d Start ? Start time of each observing run (MJD, UTC)
38- 49 F12.6 d Mid ? Mid-eclipse time (BMJD, TDB)
53- 60 F8.6 d e_Mid ? rms uncertainty on Mid (1)
62- 74 A13 s Texp Exposure time in seconds and is supplied as
Tblue/Tgreen/Tred for the three beams of
ULTRACAM
77- 79 I3 min DeltaT ? Duration of the observing run
81- 93 A13 --- Tel/Inst Telescope/instrument
94- 96 A3 --- Filt1 Fisrt filter name
97 A1 --- --- [/]
98- 99 A2 --- Filt2 Second filter name
100 A1 --- --- [/]
101-102 A2 --- Filt3 Third filter name
104-107 F4.1 mag mag1 ? Estimated out-of-eclipse magnitude in
Filt1 filter
108 A1 --- --- [/]
109-112 F4.1 mag mag2 ? Estimated out-of-eclipse magnitude in
Filt2 filter
113 A1 --- --- [/]
114-117 F4.1 mag mag3 ? Estimated out-of-eclipse magnitude in
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Note (1): pt5m mid-eclipses times are estimated using a Gaussian fit and
will suffer from additional systematic uncertainty.
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 26-Aug-2019