J/AJ/146/107 Velocity curves of 10 cataclysmic binaries (Thorstensen+, 2013)
Optical and X-ray studies of 10 X-ray-selected cataclysmic binaries.
Thorstensen J.R., Halpern J.
<Astron. J., 146, 107 (2013)>
=2013AJ....146..107T 2013AJ....146..107T
ADC_Keywords: Binaries, cataclysmic ; Binaries, X-ray ; Spectroscopy
Keywords: novae, cataclysmic variables - X-rays: binaries
Abstract:
We report on ground-based optical observations of 10 cataclysmic
binaries that were discovered through their X-ray emission.
Time-resolved radial velocity spectroscopy yields unambiguous orbital
periods for eight objects and ambiguous results for the remaining two.
The orbital periods range from 87 minutes to 9.38 hr. We also obtained
time-series optical photometry for six targets, four of which have
coherent pulsations. These periods are 1218s for 1RXSJ045707.4+452751,
628s for AXJ1740.2-2903, 477s for AXJ1853.3-0128, and 935s for
IGRJ19267+1325. A total of seven of the sources have coherent
oscillations in X-rays or optical, indicating that they are
intermediate polars (DQ Herculis stars). Time-resolved spectroscopy of
one object, SwiftJ2218.4+1925, shows that it is an AM Herculis star,
or polar, and IGRJ19552+0044 may also be in that class. For another
object, SwiftJ0746.2-1611, we find an orbital period of 9.384 hr and
detect the spectrum of the secondary star. The secondary's spectral
contribution implies a distance of 900 (+190, -150)pc, where the error
bars are estimated using a Monte Carlo technique to account for
correlated uncertainties.
Description:
Our optical data are from the MDM Observatory, which comprises the
1.3m McGraw Hill telescope and the 2.4m Hiltner telescope, on Kitt
Peak, Arizona. Our 10 radial velocity studies used the 2.4m. Nearly
all of our radial velocity studies on the 2.4m used the modular
spectrograph.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 93 10 Stars observed
table2.dat 37 459 Radial velocities
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See also:
B/cb : Cataclysmic Binaries, LMXBs, and related objects (Ritter+, 2014)
I/322 : UCAC4 Catalogue (Zacharias+, 2012)
I/317 : The PPMXL Catalog (Roeser+ 2010)
V/123 : Catalog of Cataclysmic Variables (Downes+ 2001-2006)
I/284 : The USNO-B1.0 Catalog (Monet+ 2003)
J/AJ/144/81 : Spectroscopy and photometry of CV candidates (Thorstensen+, 2012)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 11 A11 --- Name Abbreviated star name
13- 33 A21 --- OName Star full name
35 A1 --- f_OName [e] Now named V667 Puppis
37- 38 I2 h RAh Hour of Right Ascension (J2000) (1)
40- 41 I2 min RAm Minute of Right Ascension (J2000) (1)
43- 47 F5.2 s RAs Second of Right Ascension (J2000) (1)
49 A1 --- DE- Sign of the Declination (J2000) (1)
50- 51 I2 deg DEd Degree of Declinataion (J2000) (1)
53- 54 I2 arcmin DEm Arcminute of Declination (J2000) (1)
56- 59 F4.1 arcsec DEs Arcsecond of Declination (J2000) (1)
61 A1 --- u_Vmag [:] Uncertainty flag on Vmag
62- 65 F4.1 mag Vmag Approximate V band magnitude
66 A1 --- f_Vmag [f] Cataloged magnitudes of this object show
variability by ∼2mag
68 A1 --- r_Vmag Reference for Vmag (2)
70- 74 A5 --- Data [STX] Type of data presented here (3)
76- 77 A2 --- Class Classification of star (4)
78 A1 --- u_Class [?] Uncertainty flag on Class
80- 86 F7.2 s Per ? Period (presumed to be the spin period)
88- 91 F4.2 s e_Per ? Uncertainty in Per
93 I1 --- r_Per ? Reference for Per (5)
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Note (1): Either from the PPMXL catalog (Roeser et al., 2010, cat. I/317) or
derived from astrometric fits to our own images referred to the UCAC-3
(Zacharias et al., 2009, cat. I/315; obsoleted by the UCAC-4, Zacharias et
al., 2012, cat. I/322). Estimated uncertainty is ±0.2".
Note (2): Source of approximate V magnitude as follows:
S = Our spectrophotometry;
D = Our direct image;
A = AAVSO All-Sky Photometric Survey (APASS; (Henden et al.,
2012JAVSO..40..430H 2012JAVSO..40..430H), as listed in the UCAC-4 (Zacharias et al., 2012,
cat. I/322);
B = interpolated from Schmidt-plate magnitudes in USNO-B1.0 (Monet et al.,
2003, cat. I/284);
I = Extrapolated from IPHAS, r'=17.7 (Steeghs et al., 2008ATel.1653....1S 2008ATel.1653....1S;
Monet et al., 2003, cat. I/284), as listed in PPMXL (Roeser et al., 2010,
cat. I/317).
Note (3): Types of data as follows:
S = Time-resolved spectroscopy;
T = Time-series photometry;
X = X-ray light curve.
Note (4): Class as follows:
N = Novalike variable (pulsations not confirmed);
DQ = DQ Her star or IP (evidence for pulsations);
AM = AM Her star or polar.
Note (5): Reference as follows:
1 = This paper;
2 = Patterson et al. (2006ATel..757....1P 2006ATel..757....1P);
3 = Bernardini et al. (2012A&A...542A..22B 2012A&A...542A..22B).
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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- 11 A11 --- Name Abbreviated star name
13- 22 F10.4 d HJD UTC Heliocentric Julian Date of mid-exposure
(HJD-2400000)
24- 26 I3 km/s RVa ? Radial velocity from absorption lines
28- 29 I2 km/s e_RVa ? Uncertainty in RVa
31- 34 I4 km/s RVe Radial velocity from emission lines
36- 37 I2 km/s e_RVe Uncertainty in RVe
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History:
From electronic version of the journal
References:
Halpern & Thorstensen Paper II. 2015AJ....150..170H 2015AJ....150..170H, Cat. J/AJ/150/170
Halpern et al. Paper III. 2018AJ....155..247H 2018AJ....155..247H
(End) Greg Schwarz [AAS], Sylvain Guehenneux [CDS] 16-Jul-2014