2018MNRAS.475.2560V

Query : 2018MNRAS.475.2560V

2018MNRAS.475.2560V - Mon. Not. R. Astron. Soc., 475, 2560-2590 (2018/April-1)

Discovery of 36 eclipsing EL CVn binaries found by the Palomar Transient Factory.

VAN ROESTEL J., KUPFER T., RUIZ-CARMONA R., GROOT P.J., PRINCE T.A., BURDGE K., LAHER R., SHUPE D.L. and BELLM E.

Abstract (from CDS):

We report on the discovery and analysis of 36 new eclipsing EL CVn-type binaries, consisting of a core helium-composition pre-white dwarf (pre-He-WD) and an early-type main-sequence companion. This more than doubles the known population of these systems. We have used supervised machine learning methods to search 0.8 million light curves from the Palomar Transient Factory (PTF), combined with Sloan Digital Sky Survey (SDSS), Panoramic Survey Telescope and Rapid Response System (Pan-STARRS) and Two-Micron All-Sky Survey (2MASS) colours. The new systems range in orbital periods from 0.46 to 3.8 d and in apparent brightness from ∼14 to 16 mag in the PTF R or g filters. For 12 of the systems, we obtained radial velocity curves with the Intermediate Dispersion Spectrograph at the Isaac Newton Telescope. We modelled the light curves, radial velocity curves and spectral energy distributions to determine the system parameters. The radii (0.3-0.7 R☉) and effective temperatures (8000-17 000 K) of the pre-He-WDs are consistent with stellar evolution models, but the masses (0.12-0.28 M☉) show more variance than models have predicted. This study shows that using machine learning techniques on large synoptic survey data is a powerful way to discover substantial samples of binary systems in short-lived evolutionary stages.

Abstract Copyright: © 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): binaries: close - binaries: eclipsing - stars: individual: EL CVn - white dwarfs

Simbad objects: 58

goto Full paper

goto View the references in ADS

Number of rows : 58
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 [SK98] 122 EB* 00 40 40.2359605824 +41 25 21.602190720   14.15 13.82 13.80   F0 9 0
2 UCAC4 642-002543 EB* 00 43 00.7530307824 +38 15 37.200684276   14.85 14.65 14.70   ~ 2 0
3 UCAC4 656-003397 EB* 00 54 24.0619276584 +41 11 26.999354004   15.59 15.68 15.69   ~ 1 0
4 ZTF J005659.72+130920.7 EB* 00 56 59.7214166952 +13 09 20.757805524   16.21 15.85 16.27   ~ 5 0
5 UCAC4 670-006185 EB* 01 19 09.9114191520 +43 59 07.132912368   15.52 15.50 15.85   A2IV 4 0
6 CRTS J012814.7+040552 EB* 01 28 14.7141343392 +04 05 51.842258988     13.95 13.9   ~ 3 0
7 UCAC4 686-009138 EB* 01 33 36.9299409888 +47 06 00.212146704   16.28 15.95 16.16   A1IV 3 0
8 CRTS J014839.0+382314 EB* 01 48 39.1122385104 +38 23 14.481209220   13.63 13.58 13.59   A1IV 8 0
9 CRTS J021913.1+215922 EB* 02 19 13.1592593928 +21 59 22.040035728   15.84 15.62 15.61   ~ 6 0
10 1SWASP J024743.37-251549.2 EB* 02 47 43.3843773672 -25 15 49.269532545   12.381 12.231 12.397   ~ 52 0
11 ATO J108.0292+21.2819 EB* 07 12 07.0083339168 +21 16 55.050520584       14.99   ~ 2 0
12 UCAC4 870-004194 EB* 07 53 10.3717535688 +83 51 54.749355876   15.64 15.28 15.34   ~ 2 0
13 ATO J119.1770+16.3622 EB* 07 56 42.4940555976 +16 21 43.961486976   14.63 14.30 14.36   ~ 3 0
14 ATO J119.9584+15.7219 EB* 07 59 50.0368763592 +15 43 19.186218624   14.21 13.99 14.11   ~ 4 0
15 CRTS J080425.2+070845 EB* 08 04 25.2629747016 +07 08 45.255283872   14.96 14.69 14.72   ~ 5 0
16 1SWASP J084558.78+530209.8 EB* 08 45 58.8078998576 +53 02 09.744110187     12.9     ~ 7 0
17 * alf Leo PM* 10 08 22.31099 +11 58 01.9516 0.88 1.24 1.40 1.37 1.47 B8IVn 891 1
18 ATO J183.2261+36.5615 EB* 12 12 54.2807005776 +36 33 41.806018224   16.36 16.11 15.90   A6IV 7 0
19 ATO J190.4773+00.2258 EB* 12 41 54.5886843264 +00 13 33.029654952   14.60 14.27 14.25   ~ 4 0
20 V* EL CVn SB* 13 23 57.0187644840 +43 35 55.438730592   9.914 9.367     A1V 59 0
21 Cl* NGC 5139 SAW V209 BS* 13 26 17.2590081384 -47 23 17.168879292 16.915 16.721 16.578 16.566 16.364 ~ 21 0
22 NGC 5139 GlC 13 26 47.28 -47 28 46.1           ~ 3677 0
23 ATO J203.0857+35.4797 EB* 13 32 20.5909336824 +35 28 47.069381172   14.46 14.30 14.40   A7V 7 0
24 ATO J204.8723+45.8487 EB* 13 39 29.3706223200 +45 50 55.682338020   15.43 15.25 15.70   A6IV 4 0
25 UCAC4 354-070319 EB* 15 00 41.8432670280 -19 14 17.333263572   14.61 14.36 14.59   ~ 1 0
26 ATO J225.8650+46.0563 EB* 15 03 27.6100938960 +46 03 22.745567880   16.34 16.04 16.26   ~ 6 0
27 CRTS J150336.0+195842 EB* 15 03 36.1092903096 +19 58 42.194862300   15.22 14.90 15.02   ~ 7 0
28 UCAC4 511-057288 EB* 15 27 26.8107934368 +12 04 53.542699284   15.29 14.91 13.68   kA6hA5mA9 2 0
29 CRTS J152758.9+190751 EB* 15 27 58.9046764824 +19 07 51.692774772   15.35 15.07 15.26   ~ 6 0
30 UCAC4 552-053246 EB* 15 30 05.0323392048 +20 21 56.974592520   15.91 15.81 15.43   ~ 2 0
31 HD 145689 PM* 16 17 05.4106267752 -67 56 28.623022404   6.090 5.944     A3V 76 0
32 BPS BS 16542-0030 EB* 16 23 42.1416407184 +23 14 56.819573520     13.97 14.0   A5V 9 0
33 1SWASP J162842.31+101416.7 EB* 16 28 42.2807802912 +10 14 16.520260596   13.10 12.87 12.90   kA2hA4mA7 23 1
34 UCAC4 654-060802 EB* 17 32 57.9838568088 +40 36 00.965583396       15.06   ~ 3 0
35 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
36 OGLE BLG-RRLYR-2792 RR* 17 47 38.2072195464 -35 31 07.163702436     17.079   15.734 ~ 46 0
37 UCAC4 566-061120 EB* 17 54 33.4976361312 +23 00 41.848065108   15.03 14.76 14.82   ~ 3 0
38 Kepler-1746 Ro* 19 13 16.9072952352 +42 15 41.118582024           F7IV 44 0
39 ZTF J191826.06+485302.7 EB* 19 18 26.0723925864 +48 53 02.774406228   14.15 13.83 13.84   kA4hA7mA9 11 0
40 KOI-3818 Er* 19 18 57.3992514336 +41 57 54.857792556   11.90 11.48     B9.5Vn 22 0
41 BD+47 2811 EB* 19 21 11.6187224352 +47 58 42.954779100   9.79 9.53   9.330 A5IV 69 0
42 KOI-6081 EB* 19 21 45.5867127720 +48 02 42.345094380   16.47 16.13     A+D 22 0
43 2MASS J19245978+3802336 EB* 19 24 59.7770479320 +38 02 33.617034060           ~ 20 0
44 KOI-1224 EB* 19 27 56.8751913744 +42 02 15.548977968   14.496 13.833 13.626   ~ 39 0
45 TYC 3556-2801-1 dS* 19 34 59.8376714184 +45 45 42.261664428   12.95 12.27     ~ 22 0
46 KOI-81 EB* 19 35 08.5764186408 +45 01 06.455313660   11.51 11.32     B8V 60 0
47 2MASS J19373202+3915189 EB* 19 37 32.0316009312 +39 15 18.862349220           ~ 20 0
48 ZTF J194227.63+453016.9 EB* 19 42 27.6411194880 +45 30 16.988852052           A+D(N) 42 0
49 KOI-74 EB* 19 53 17.8104467976 +42 23 18.509696700   10.832 10.896 10.976   A1V 68 1
50 KOI-7004 EB* 20 01 19.8041339400 +44 08 38.853512412   12.97 12.87     A5V 51 0
51 UCAC4 579-116626 EB* 21 33 18.9900066360 +25 41 26.289399264       15.95   ~ 3 0
52 UCAC4 568-125457 EB* 21 35 34.1106304824 +23 33 13.912330392   15.21 14.92 15.19   ~ 1 0
53 CRTS J214858.3+030417 EB* 21 48 58.3340689920 +03 04 17.551779816   15.47 15.20 15.22   ~ 5 0
54 UCAC4 495-142916 EB* 22 07 19.5734538696 +08 54 15.707290536       15.96   ~ 1 0
55 CRTS J225539.4+342138 EB* 22 55 39.4164655824 +34 21 37.842051960   15.14 14.84 14.95   ~ 7 0
56 UCAC4 646-116578 EB* 22 56 52.5250300920 +39 08 22.842222072       15.98   ~ 4 0
57 ZTF J225755.64+310133.7 EB* 22 57 55.6554093384 +31 01 33.765200544       15.06   ~ 4 0
58 ATO J347.5419+33.2138 EB* 23 10 10.0837406856 +33 12 49.820246244   15.34 14.94 15.02   ~ 5 0

To bookmark this query, right click on this link: simbad:objects in 2018MNRAS.475.2560V and select 'bookmark this link' or equivalent in the popup menu