J/AJ/166/131 Radial velocities for 7 cataclysmic variables (Thorstensen+, 2023)
Optical Studies of Seven Bright Southern Cataclysmic Variable Stars.
Thorstensen J.R., Alvarado-Anderson C.K., Burrows A.D., Goebel-Bain R.M.,
Katz D.C.
<Astron. J., 166, 131 (2023)>
=2023AJ....166..131T 2023AJ....166..131T
ADC_Keywords: Stars, variable; Spectra, optical; Radial velocities
Keywords: Cataclysmic variable stars ; Nova-like variable stars ; SU
Ursae Majoris stars ; U Geminorum stars
Abstract:
We report spectroscopic observations of seven bright southern
cataclysmic variable stars, collected on a single two-week observing
run using the 1.9m Radcliffe telescope at the South African
Astronomical Observatory. We used a radial-velocity time series, in
some cases in combination with other data, to determine or clarify
orbital periods for five of them, namely ATOJ061.1478-31.0634,
BMAM-V547, MGAB-V202, NSV4202, and V1147Cen. For BMAM-V547, we use
data from the Transiting Exoplanet Survey Satellite (TESS) to
corroborate and sharpen the orbital period; the TESS data also show a
photometric period near 3.93days, likely indicating precession of the
accretion disk. Also, we find a periodic modulation in the radial
velocities of the SU UMa-type dwarf nova Var Ret2005, but are unable
to specify a unique cycle count. Finally, we show a spectrum of
ASASSN-VJ061528.41-412007.3 that appears typical of a luminous
novalike variable.
Description:
All our observations are from the 1.9m Radcliffe telescope operated by
the South African Astronomical Observatory. We used the SpUpNIC
spectrograph with Grating 6, which covered from 4220 to 6860Å. The
1.1" slit yielded a FWHM resolution of ∼4.5Å. Most of our
individual exposures were between 8 and 20 minutes.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 85 7 List of objects
table2.dat 55 203 Radial velocities
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See also:
I/337 : Gaia DR1 (Gaia Collaboration, 2016)
I/345 : Gaia DR2 (Gaia Collaboration, 2018)
J/other/IBVS/5863 : 79th Name-List of Variable Stars (Kazarovets+, 2008)
J/ApJ/696/870 : Catalina Real-time Transient Survey (CRTS) (Drake+, 2009)
J/ApJS/194/28 : The evolution of cataclysmic variables (Knigge+, 2011)
J/MNRAS/435/707 : Hα velocity curves of IM Eri (Armstrong+, 2013)
J/ApJ/788/48 : X-ray through NIR photometry of NGC 2617 (Shappee+, 2014)
J/AcA/65/313 : Thousand new dwarf novae from the OGLE Survey (Mroz+, 2015)
J/AJ/160/151 : RVs 5 cataclysmic variable candidates (Thorstensen, 2020)
J/AJ/160/6 : OSMOS &modspec RVs of 30 catac variable (Thorstensen, 2020)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 28 A28 --- ID Object identifier
30- 31 I2 h RAh [4/13] Gaia DR2 hour of right ascension
(ICRS at Ep=2016)
33- 34 I2 min RAm Gaia DR2 minute of right ascension
(ICRS at Ep=2016)
36- 41 F6.3 s RAs Gaia DR2 second of right ascension
(ICRS at Ep=2016)
43 A1 --- DE- [-] Gaia DR2 sign of declination
(ICRS at Ep=2016)
45- 46 I2 deg DEd [31/70] Gaia DR2 degree of declination
(ICRS at Ep=2016)
48- 49 I2 arcmin DEm Gaia DR2 arcminute of declination
(ICRS at Ep=2016)
51- 55 F5.2 arcsec DEs Gaia DR2 arcsecond of declination
(ICRS ar Ep=2016)
57- 60 F4.1 mag Gmag [12.6/16.6] G-band magnitude
62- 65 I4 pc Dist [329/1072] Gaia DR2 distance (1/plx)
67- 68 I2 pc e_Dist [3/24] Error on Dist
70- 85 A16 --- SIMBAD SIMBAD name
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 28 A28 --- ID Object identifier
30- 39 F10.4 d BJD [59984/59998] Barycentric Julian Date of
mid-exposure BJD-2400000 (1)
41- 44 I4 km/s RVela [-134/180]? Absorption radial velocity
46- 47 I2 km/s e_RVela [8/21]? Uncertainty in RVela
49- 52 I4 km/s RVele [-247/225] Emission radial velocity
54- 55 I2 km/s e_RVele [3/28] Uncertainty in RVele
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Note (1): The time argument is referred to UTC (not TAI) and is the barycentric
julian date of mid-exposure minus 2400000., which differs
from MJD by 0.5d.
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History:
From electronic version of the journal
(End) Prepared by [AAS], Coralie Fix [CDS], 26-Mar-2024