2018A&A...616A..38M


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.04CEST13:34:33

2018A&A...616A..38M - Astronomy and Astrophysics, volume 616A, 38-38 (2018/8-1)

Discovery and characterisation of long-period eclipsing binary stars from Kepler K2 campaigns 1, 2, and 3.

MAXTED P.F.L. and HUTCHEON R.J.

Abstract (from CDS):


Context. The Kepler K2 mission now makes it possible to find and study a wider variety of eclipsing binary stars than has been possible to-date, particularly long-period systems with narrow eclipses.
Aims. Our aim is to characterise eclipsing binary stars observed by the Kepler K2 mission with orbital periods longer than P~=5.5-days.
Methods. The ellc binary star model has been used to determine the geometry of eclipsing binary systems in Kepler K2 campaigns 1, 2 and 3. The nature of the stars in each binary is estimated by comparison to stellar evolution tracks in the effective temperature - mean stellar density plane.
Results. 43 eclipsing binary systems have been identified and 40 of these are characterised in some detail. The majority of these systems are found to be late-type dwarf and sub-giant stars with masses in the range 0.6-1.4 solar masses. We identify two eclipsing binaries containing red giant stars, including one bright system with total eclipses that is ideal for detailed follow-up observations. The bright B3V-type star HD 142883 is found to be an eclipsing binary in a triple star system. We observe a series of frequencies at large multiples of the orbital frequency in BW Aqr that we tentatively identify as tidally induced pulsations in this well-studied eccentric binary system. We find that the faint eclipsing binary EPIC 201160323 shows rapid apsidal motion. Rotational modulation signals are observed in 13 eclipsing systems, the majority of which are found to rotate non-synchronously with their orbits.
Conclusions. The K2 mission is a rich source of data that can be used to find long period eclipsing binary stars. These data combined with follow-up observations can be used to precisely measure the masses and radii of stars for which such fundamental data are currently lacking, e.g., sub-giant stars and slowly-rotating low-mass stars.

Abstract Copyright: © ESO 2018

Journal keyword(s): binaries: eclipsing

CDS comments: Some EPIC objects not in SIMBAD.

Simbad objects: 36

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Number of rows : 36

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 V* AI Phe Al* 01 09 34.1924817079 -46 15 56.074292976   9.26 8.60     G3V 119 0
2 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 5665 1
3 V* TZ For Al* 03 14 40.0927132298 -35 33 27.595013257   7.620 6.878     F7III+G8III 114 0
4 TYC 266-718-1 EB* 11 11 33.4642791800 +02 47 13.369659052   10.86 10.26 10.15   ~ 5 0
5 V* FM Leo Al* 11 12 45.0946867674 +00 20 52.844800914   8.95 8.45 8.89   F7V 35 0
6 UCAC4 444-053181 EB* 11 20 38.396 -01 13 33.47   12.82 11.91 11.81   ~ 3 0
7 UCAC4 471-045450 EB* 11 21 08.8558930460 +04 02 23.078470640   16.56 15.39 15.19   ~ 2 0
8 UCAC4 444-053205 EB* 11 21 24.0058679033 -01 16 35.164647830   15.88 14.93 14.94   ~ 2 0
9 BD+04 2479 EB* 11 29 32.5913549361 +03 43 55.569606103   10.45 9.90 9.92   F8 4 0
10 TYC 4930-128-1 EB* 11 30 03.2279419258 -00 50 03.960491597   12.63 11.53 11.98   ~ 5 0
11 UCAC4 425-055664 EB* 11 38 27.6792205112 -05 00 56.238630372   15.77 14.88 14.78   ~ 2 0
12 2MASS J11425149-0502555 EB* 11 42 51.5021900395 -05 02 55.891352663           ~ 2 0
13 TYC 272-458-1 EB* 11 46 10.2109354011 +01 41 15.134899206       9.6   ~ 9 0
14 UCAC4 435-055785 EB* 11 57 19.8409831120 -03 09 42.560228503   13.64 13.00 13.12   ~ 4 0
15 TYC 4935-765-1 * 11 58 05.9530785728 -03 15 28.090403830   12.42 11.92     ~ 2 0
16 TYC 6199-607-1 EB* 15 55 11.6114841258 -22 27 15.460395272   13.22 12.27     ~ 3 0
17 TYC 6787-898-1 * 15 56 02.9570856940 -26 23 54.850152846   12.66 12.04     ~ 3 0
18 HD 142883 Ce* 15 57 40.4640119599 -20 58 59.079892955   5.839 5.836     B3V 130 0
19 EPIC 203636784 * 16 01 05.27640 -25 27 38.9484           ~ 2 0
20 TYC 6201-641-1 * 16 11 04.1064355517 -16 51 53.457329097   12.43 12.09     ~ 2 0
21 NAME Upper Sco Association As* 16 12 -23.4           ~ 1021 1
22 EPIC 203371239 * 16 16 39.38280 -26 21 55.7892           ~ 2 0
23 EPIC 204576757 * 16 28 37.8224080473 -21 46 02.998415901           ~ 4 0
24 EPIC 205703649 * 16 29 22.24610 -15 38 30.3648           ~ 2 0
25 HD 149946 * 16 39 03.3973347169 -28 47 13.427765118   10.38 9.85     F3(V) 5 0
26 CD-24 12846 * 16 49 08.3721930596 -25 08 31.405665664   11.33 10.69     F 3 0
27 HD 187091 EB* 19 46 15.5313838595 +43 56 51.339206744   8.53 8.39     kA3hA5mA5(IV)sAm: 56 0
28 EPIC 206288770 * 22 17 03.85580 -08 24 47.0016           ~ 2 0
29 TYC 5804-143-1 * 22 19 22.5605451461 -08 55 51.021463433   11.68 10.98     ~ 2 0
30 V* BW Aqr Al* 22 23 15.9304389455 -15 19 56.201677729   10.8 10.3     F7 89 0
31 HD 212252 * 22 23 17.1602810973 -16 03 26.980258996   10.94 10.49     F6/7V 4 0
32 LP 819-72 PM* 22 26 58.7098419470 -17 25 28.017873650   12.30 10.54 10.308   K5V 10 0
33 TYC 5814-297-1 * 22 29 16.8855170062 -11 51 28.983637863   12.51 11.90     ~ 2 0
34 EPIC 206066909 * 22 30 49.20550 -12 58 05.9916           ~ 2 0
35 BD-13 6219 * 22 35 26.6507263734 -12 58 10.150169916   11.05 10.44     ~ 3 0
36 TYC 5239-1149-1 * 22 36 00.5184880812 -06 04 49.678367587   12.69 12.12     ~ 2 0

    Equat.    Gal    SGal    Ecl

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2020.07.04-13:34:33

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