J/MNRAS/525/3597 CVs from SDSS V (Inight+, 2023)
Cataclysmic variables from Sloan Digital Sky Survey.
V. The search for period bouncers continues.
Inight K., Gansicke B.T., Schwope A., Anderson S.F., Badenes C., Breedt E.,
Chandra V., Davies B.D.R., Gentile Fusillo N.P., Green M.J., Hermes J.J.,
Huamani I.A., Hwang H., Knauff K., Kurpas J., Long K.S., Malanushenko V.,
Morrison S., Quiroz C.I.J., Ramos G.N.A., Roman-Lopes A., Schreiber M.R.,
Standke A., Stutz L., Thorstensen J.R., Toloza O., Tovmassian G.,
Zakamska N.L.
<Mon. Not. R. Astron. Soc., 525, 3597-3625 (2023)>
=2023MNRAS.525.3597I 2023MNRAS.525.3597I (SIMBAD/NED BibCode)
ADC_Keywords: Binaries, cataclysmic ; Photometry, SDSS ; Binaries, orbits ;
Stars, white dwarf
Keywords: dwarf novae - cataclysmic variables - white dwarfs
Abstract:
SDSS-V is carrying out a dedicated survey for white dwarfs, single and
in binaries, and we report the analysis of the spectroscopy of 118
cataclysmic variables (CVs) and CV candidates obtained during the
final plug plate observations of SDSS. We identify eight new CVs,
spectroscopically confirm 53 and refute eleven published CV
candidates, and we report 21 new or improved orbital periods. The
orbital period distribution of the SDSS-V CVs does not clearly exhibit
a period gap. In common with previous studies, the distribution shows
that spectroscopically identified CVs have a larger proportion of
short-period systems compared to samples identified from photometric
variability. Remarkably, despite a systematic search, we find very few
period bouncers. We estimate the space density of period bouncers to
be ~=0.2x106pc-3, i.e. they represent only a few per cent
of the total CV population. This suggests that during their final
phase of evolution, CVs either destroy the donor, e.g. via a merger,
or that they become detached and cease mass transfer.
Description:
SDSS-V is, for the first time, carrying out a dedicated survey of
white dwarfs, both single and in binaries. We have analysed the SDSS-V
spectra of CVs and CV candidates observed as part of the final
plug-plate operations of SDSS, and we discovered eight new CVs.
We provide a machine-readable version of the table in Appendix A of
the paper. The table contains one record for each CV in the sample.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tablea1.dat 243 118 CVs from the plate survey
(superseded by J/MNRAS/536/1057)
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See also:
J/MNRAS/524/4867 : CVs from SDSS (Inight+, 2023)
Byte-by-byte Description of file: tablea1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 19 A19 --- SDSS Unique reference for the SDSS object
(JHHMMSS.ss+DDMMSS.s)
21- 49 A29 --- Name Other name (where available)
51- 69 I19 --- GaiaEDR3 The unique source_id of the Gaia EDR3
counterpart source_id
71- 81 F11.8 h Per ? Orbital period in hours
83- 92 F10.8 h e_Per ? Error on orbital period
94 A1 --- n_Per [:*] Note on Per (1)
96-100 F5.2 mag Gmag G-band magnitude from the Gaia EDR3 survey
102-105 I4 pc Distance ? Distance from Bailer-Jones et al.
(2021AJ....161..147B 2021AJ....161..147B, Cat. I/352)
107-117 A11 --- VType Classification using the taxonomy
defined in the paper (2)
119-132 A14 --- Cartons Cartons (3)
136-162 A27 --- Ref-disc BibCode of the earliest identification
of this CV
164-182 A19 --- Ref-sp BibCode of the first published spectrum
184-204 A21 --- Ref-P BibCode of the source of the orbital period
206-223 F18.14 deg RAdeg Right ascension (J2000)
225-243 F19.15 deg DEdeg Declination (J2000)
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Note (1): Note on Per as follows:
: = tentative value
* = it was derived from superhump periods
Note (2): Note on VType:
: = indicates a tentative value
++ = CVs with unusual state changes
PS = Period bouncers
+E = Eclipsing
Note (3): Cartons as follows:
cv = mwmcbcvcandidates
gg = mwmcbgaiagalex
u1 = mwmcbuvex1
u2 = mwmcbuvex2
u4 = mwmcbuvex4
wd = mwm_wd
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Acknowledgements:
Keith Inight, keith.inight(at)gmail.com
References:
Szkody et al., Paper I 2002AJ....123..430S 2002AJ....123..430S
Szkody et al., Paper II 2003AJ....126.1499S 2003AJ....126.1499S
Szkody et al., Paper III 2004AJ....128.1882S 2004AJ....128.1882S
Szkody et al., Paper IV 2005AJ....129.2386S 2005AJ....129.2386S
Szkody et al., Paper V 2006AJ....131..973S 2006AJ....131..973S
Szkody et al., Paper VI 2007AJ....134..185S 2007AJ....134..185S
Szkody et al., Paper VIII 2011AJ....142..181S 2011AJ....142..181S, Cat. J/AJ/142/181
(End) Patricia Vannier [CDS] 24-Oct-2023