2016A&A...587A..54N


C.D.S. - SIMBAD4 rel 1.7 - 2020.04.05CEST22:28:39

2016A&A...587A..54N - Astronomy and Astrophysics, volume 587A, 54-54 (2016/3-1)

SuperWASP discovery and SALT confirmation of a semi-detached eclipsing binary that contains a δ Scuti star.

NORTON A.J., LOHR M.E., SMALLEY B., WHEATLEY P.J. and WEST R.G.

Abstract (from CDS):

We searched the SuperWASP archive for objects that display multiply periodic photometric variations. Specifically we sought evidence for eclipsing binary stars that display a further non-harmonically related signal in their power spectra. The object 1SWASP J050634.16-353648.4 has been identified as a relatively bright (V∼11.5) semi-detached eclipsing binary with a 5.104d orbital period that displays coherent pulsations with a semi-amplitude of 65mmag at a frequency of 13.45d–1. Follow-up radial velocity spectroscopy with the Southern African Large Telescope confirmed the binary nature of the system. Using the phoebe code to model the radial velocity curve with the SuperWASP photometry enabled parameters of both stellar components to be determined. This yielded a primary (pulsating) star with a mass of 1.73±0.11M and a radius of 2.41±0.06R, as well as a Roche-lobe filling secondary star with a mass of 0.41±0.03M and a radius of 4.21±0.11R. 1SWASP J050634.16-353648.4 is therefore a bright δ Sct pulsator in a semi-detached eclipsing binary with one of the largest pulsation amplitudes of any such system known. The pulsation constant indicates that the mode is likely a first overtone radial pulsation.

Abstract Copyright:

Journal keyword(s): binaries: eclipsing - stars: variables: delta Scuti

Status at CDS:  

Simbad objects: 18

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Number of rows : 18

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* AB Cas Al* 02 37 31.5113123367 +71 18 16.273650984   10.59 10.32     A3 143 0
2 V* RZ Cas Al* 02 48 55.5096536172 +69 38 03.441544807   6.40 6.26     A3V 438 0
3 V* AS Eri Al* 03 32 25.1262238528 -03 18 48.096045754   8.49 8.30     A1V 158 0
4 V* AB Per Al* 03 37 45.2030831 +40 45 49.369859   10.10 9.72     A5V 68 0
5 V* TZ Eri Al* 04 21 40.3306286323 -06 01 09.201548751   9.97 9.61     A5 57 0
6 TYC 7053-566-1 * 05 06 34.1690469553 -35 36 48.327824388   11.78 11.51     ~ 4 0
7 * 14 Aur dS* 05 15 24.3939839964 +32 41 15.363849904   5.217 5.000 6.45   A9V 185 0
8 V* R CMa Al* 07 19 28.1782479807 -16 23 42.900652548 6.09 6.05 5.70     F2III/IV 262 0
9 V* Y Cam Al* 07 41 11.0044924697 +76 04 26.090361755   10.93 10.60     A9IV+K1IV 153 0
10 V* RX Hya Al* 09 05 41.1657625108 -08 15 39.727879187   9.78 9.56     A5III 90 0
11 V* V1264 Cen EB* 13 10 18.4224569554 -45 09 13.570047116   13.02 11.95   11.38 A7V 13 1
12 HD 139319 ** 15 33 51.05705 +63 54 25.6950           ~ 233 0
13 HD 139319A SB* 15 33 51.0598928122 +63 54 25.706692279   7.75 7.46     A5m 238 0
14 V* MX Pav Al* 18 24 11.2393055885 -63 56 55.118392311   11.97 11.54     ~ 20 0
15 V* BO Her Al* 18 40 30.0965167761 +24 55 42.768478914   11.67 11.14     A7 25 0
16 TYC 459-892-1 Al* 18 43 16.9525916455 +05 58 00.217779963   12.68 12.21 11.83   ~ 17 0
17 ASAS J190333+3941.0 Al* 19 03 32.7241738858 +39 41 00.368014032   10.95 10.83   10.582 A3V 47 0
18 V* RS Gru dS* 21 43 04.2200096984 -48 11 22.184540695   8.53 8.26     A9IV 94 0

    Equat.    Gal    SGal    Ecl

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2020.04.05-22:28:39

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