J/MNRAS/402/436 New Dwarf novae in SDSS, GALEX and astrom. cat. (Wils+, 2010)
Data mining for dwarf novae in SDSS, GALEX and astrometric catalogues.
Wils P., Gansicke B.T., Drake A.J., Southworth J.
<Mon. Not. R. Astron. Soc., 402, 436-446 (2010)>
=2010MNRAS.402..436W 2010MNRAS.402..436W (SIMBAD/NED BibCode)
ADC_Keywords: Novae ; Binaries, cataclysmic ; Photometry, SDSS ;
Photometry, ultraviolet
Keywords: stars: dwarf novae - novae, cataclysmic variables
Abstract:
By cross-matching blue objects from the Sloan Digital Sky Survey with
Galaxy Evolution Explorer and the astrometric catalogues USNO-B1.0,
GSC2.3 and CMC14, 64 new dwarf nova candidates with one or more
observed outbursts have been identified. 14 of these systems are
confirmed as cataclysmic variables through existing and follow-up
spectroscopy. A study of the amplitude distribution and an estimate of
the outburst frequency of these new dwarf novae and those discovered
by the Catalina Real-time Transient Survey indicate that besides
systems that are faint because they are farther away, there also
exists a population of intrinsically faint dwarf novae with rare
outbursts.
Description:
Here, we cross-match a number of large surveys to find faint
outbursting dwarf novae, and make use of CRTS light curves to compare
the properties of the previously known dwarf novae, those identified
spectroscopically by SDSS, and the ones discovered in this paper.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 91 163 Known dwarf novae with SDSS ugriz data
table2.dat 94 64 Candidate and confirmed dwarf novae
table3.dat 145 64 Observed outbursts of the new dwarf novae
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See also:
I/284 : The USNO-B1.0 Catalog (Monet+ 2003)
I/304 : Carlsberg Meridian Catalog 14 (CMC14) (CMC, 2006)
I/305 : The Guide Star Catalog, Version 2.3.2 (GSC2.3) (STScI, 2006)
II/294 : The SDSS Photometric Catalog, Release 7 (Adelman-McCarthy+, 2009)
II/312 : GALEX-DR5 (GR5) sources from AIS and MIS (Bianchi+ 2011)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 25 A25 --- Name Name
27- 45 A19 --- SDSS SDSS name (JHHMMSS.ss+DDMMSS.s)
47- 52 A6 --- Type Dwarf nova subtype (1)
54- 58 F5.2 h Porb ?=- Orbital period from Ritter & Kolb
60- 64 F5.2 mag rmag r magnitude
65 A1 --- n_rmag [*] Note on rmag (2)
67- 71 F5.2 mag u-g u-g colour index
73- 77 F5.2 mag g-r g-r colour index
79- 83 F5.2 mag r-i r-i colour index
85- 89 F5.2 mag i-z i-z colour index
91 A1 --- Met Method (G1)
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Note (1): The dwarf nova subtypes are defined as follows:
UG = U Gem without subclassification
UGSS = SS Cyg subtype
UGZ = Z Cam subtype
UGSU = SU UMa subtype, UGWZ: WZ Sge subtype
E = eclipsing
ZZ = ZZ Ceti type white dwarf pulsations
Note (2): Notes as follows:
* = object was in outburst at the time of the SDSS photometry
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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- 19 A19 --- SDSS SDSS name (JHHMMSS.ss+DDMMSS.s)
21- 25 F5.2 mag FUV ?=- GALEX FUV magnitude (1)
27- 31 F5.2 mag NUV ?=- GALEX NUV magnitude (1)
32 A1 --- n_NUV [*] Note on NUV (2)
34- 38 F5.2 mag umag SDSS DR7 u magnitude (1)
39 A1 --- n_umag [*] Note on umag (2)
41- 45 F5.2 mag gmag SDSS DR7 g magnitude (1)
47- 51 F5.2 mag rmag SDSS DR7 r magnitude (1)
53- 57 F5.2 mag imag SDSS DR7 i magnitude (1)
59- 63 F5.2 mag zmag SDSS DR7 z magnitude (1)
65- 68 F4.1 mag brmag Magnitude range (3)
69 A1 --- --- [-]
70- 73 F4.1 mag Brmag Magnitude range (3)
75 A1 --- Met Method (G1)
77- 94 A18 --- Spectrum Identification spectrum (5)
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Note (1): The SDSS magnitudes are from DR7 (Abazajian et al.,
2009ApJS..182..543A 2009ApJS..182..543A), ultraviolet magnitudes have been obtained from GALEX
(Martin et al., 2005ApJ...619L...1M 2005ApJ...619L...1M).
Note (2): Note as follows:
* = NUV or u magnitude indicates that the GALEX and SDSS measurements were
taken during outburst, respectively.
Note (3): The approximate observed amplitude of variability is provided in the
r band when available, otherwise the brightest and faintest observed
magnitude are given, irrespective of passband.
Note (5): Identification spectra are available for 16 objects, magnitudes at the
time of the spectroscopy are provided where available.
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 19 A19 --- SDSS SDSS name (JHHMMSS.ss+DDMMSS.s)
21-145 A125 --- Outbursts Observed outbursts
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Global notes:
Note (G1): The recovery method refers to the four sub-steps from Fig. 2 of the
paper as follows:
A = match with GALEX
B = SDSS variability
C = no USNO counterpart
D = matching with astrometric catalogues
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 24-Jul-2015