Table 1.
New CVs and their candidates found in the CSC2–Gaia DR3 catalog.
| Object ID | RA | Dec | R95 | Gaia DR3 | G | BP–RP | FX/Fopt | Var. | d | LX | Obj. | Opt. |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| (2CXO) | (″) | source_id | (mag) | (mag) | (pc) | (1030 erg s−1) | Type | Spec. | ||||
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) | (11) | (12) | (13) |
| CV candidates selected via FX/Fopt ratio and Gaia (BP–RP) color (First cut) | ||||||||||||
| J044147.9–015145 | 04 41 47.9 | –01 51 45.7 | 0.92 | 3229135015053480064 | 20.27 | 0.10 | 0.27 | – | 249 ± 42 | 0.31 ± 0.12 | 4 | ✓ |
| J063805.1–801854 | 06 38 05.2 | –80 18 54.1 | 0.75 | 5207809444546340096 | 20.09 | 0.59 | 0.76 | Xt/Ga | 858 ± 181 | 23.73 ± 10.10 | 3 | |
| J094607.7–311550 | 09 46 07.8 | –31 15 50.9 | 4.61 | 5440027429908157440 | 19.62 | –0.49 | 0.03 | – | 498 ± 91 | 0.39 ± 0.18 | 3 | |
| J104435.5–594045 | 10 44 35.6 | –59 40 45.7 | 1.03 | 5350359031173784704 | 19.03 | –1.91( * ) | 0.01 | – | 755 ± 161 | 0.22 ± 0.11 | 3 | |
| J123727.5+655211 | 12 37 27.5 | +65 52 11.9 | 0.87 | 1680514565693517696 | 19.18 | 1.28 | 1.05 | 2.12h/X | 593 ± 57 | 43.64 ± 8.48 | 1 | ✓ |
| J155926.5–754311 | 15 59 26.6 | –75 43 11.5 | 6.97 | 5781613222711313152 | 20.52 | 0.80 | 0.20 | – | 409 ± 108 | 0.49 ± 0.31 | 1 | |
| J165219.0–441401 | 16 52 19.0 | –44 14 01.8 | 0.72 | 5964348898459271040 | 18.79 | 1.98 | 1.16 | Ga | 1839 ± 572 | 303.87 ± 195.30 | 2 | |
| J173332.5–181735 | 17 33 32.6 | –18 17 35.8 | 0.71 | 4123404591191472384 | 18.61 | 1.20 | 1.93 | – | 855 ± 153 | 171.65 ± 62.06 | 1 | |
| J173555.3–292530 | 17 35 55.3 | –29 25 30.2 | 2.65 | 4060073129401992832 | 20.47 | 0.71 | 0.57 | – | 127 ± 26 | 0.13 ± 0.07 | 1 | |
| J182117.2–131405 | 18 21 17.2 | –13 14 05.8 | 1.49 | 4152650221755630464 | 20.22 | 0.69 | 0.15 | 2.01h | 189 ± 30 | 0.06 ± 0.03 | 1 | ✓ |
| J190823.2+343328 | 19 08 23.2 | +34 33 28.1 | 2.90 | 2044505592269020416 | 20.47 | 1.30 | 0.67 | – | 373 ± 103 | 1.84 ± 1.05 | 1 | |
| CV candidates selected via period search (Second cut) | ||||||||||||
| J044048.3+292434 | 04 40 48.3 | +29 24 34.4 | 0.72 | 158134751604204416 | 18.89 | 2.22 | 0.62 | 1.30h(* * ) | 296 ± 21 | 7.05 ± 1.41 | 1 | ✓ |
| J173118.6+224248 | 17 31 18.7 | +22 42 48.8 | 1.63 | 4557025073462888960 | 19.70 | 2.51 | 0.29 | 1.84h(* * ) | 488 ± 75 | 2.40 ± 0.84 | 1 | |
| J185603.2+021259 | 18 56 03.3 | +02 12 59.8 | 2.18 | 4267156871660419712 | 17.06 | 1.33 | 0.05 | 5.46h | 211 ± 4 | 0.25 ± 0.09 | 1 | |
Notes. Data from CSC2: (1) Source name, (2) and (3) Source position: right ascension and declination, (4) Major radius of the 95% confidence level position error ellipse; Data from Gaia DR3: (5) Source ID, (6) and (7) G band and (BP–RP) magnitudes; (8) X-ray-to-optical flux ratio; (9) Variability flag. Orbital periods (in h) are computed based on ZTF photometry in this study (see Sect. 3.2). If an object is marked as a variable in: Ga – Gaia DR3 catalog; X – CSC2 catalog; Xt – X-ray timing analysis revealed a periodic signal (see Sect. 4.3); (10) Distance and its 1σ uncertainty computed from the Gaia parallax; (11) Absorption-corrected X-ray luminosity in the 0.5–7 keV energy band and its 1σ uncertainty; (12) Main object type based on Simbad database (see Sect. 2.3 and Table A.1): 1 – UNKNOWN; 2 – PROPERTIES; 3 – STARS, subtype Star; 4 – STARS, subtype WD; (13) Source has an optical spectrum (see Sect. 4.1). ( * )Indicates likely unreliable value due to large measurement errors; therefore, CV candidate 2CXO J104435.5–594045 (MG = 8.9) is not shown in Figs. 1 and 9 for illustrative purposes. ( * *)With our current data, we cannot distinguish between the two orbital periods of the system. The orbital period can be either the current value or two times it.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.