Magnetic activity and period variation studies of the short-period eclipsing binaries. III. V1175 Her, NSVS 2669503, and 1SWASP J133417.80+394314.4
Magnetic activity and period variation studies of the short-period eclipsing binaries. III. V1175 Her, NSVS 2669503, and 1SWASP J133417.80+394314.4
New multi-band CCD light curves of three binaries W UMa-type V1175 Her, NSVS 2669503, and 1SWASP J133417.80+394314.4 are presented. Spectroscopic data for V1175 Her and NSVS 2669503 show that their spectral types are G7V and K4V, respectively. Photometric solutions of these three objects were obtained with the help of the Wilson-Devinney program. We find that V1175 Her is a semi-detached binary star with a hot spot located on the secondary component, while NSVS 2669503 and 1SWASP J133417.80+394314.4 are contact eclipsing binaries with contact factors of f = 1.070 ± 0.002% and f = 21.250 ± 0.005%, respectively. Moreover, we found that the orbital period of V1175 Her is increasing at a rate of (+3.1 ± 0.1) × 10-7 days yr-1. This increase may be attributed to a mass-transfer rate from the primary to the secondary component. Finally, we discuss the evolutionary stage of the component stars of these three systems.
binaries: eclipsing, stars: activity
1-13
Lu, Hong Peng
1b561309-3abe-4ae4-a48e-2fc1bf3c260e
Michel, Raul
44ee4d0c-7065-47be-ac7f-5f1b1572579d
Zhang, Li Yun
0ff2bea1-d318-4984-82a1-e6a2840510c2
Castro, Angel
66e6330d-d93a-439a-a69b-e061e660de61
1 September 2018
Lu, Hong Peng
1b561309-3abe-4ae4-a48e-2fc1bf3c260e
Michel, Raul
44ee4d0c-7065-47be-ac7f-5f1b1572579d
Zhang, Li Yun
0ff2bea1-d318-4984-82a1-e6a2840510c2
Castro, Angel
66e6330d-d93a-439a-a69b-e061e660de61
Lu, Hong Peng, Michel, Raul, Zhang, Li Yun and Castro, Angel
(2018)
Magnetic activity and period variation studies of the short-period eclipsing binaries. III. V1175 Her, NSVS 2669503, and 1SWASP J133417.80+394314.4.
Astronomical Journal, 156 (3), , [88].
(doi:10.3847/1538-3881/aad001).
Abstract
New multi-band CCD light curves of three binaries W UMa-type V1175 Her, NSVS 2669503, and 1SWASP J133417.80+394314.4 are presented. Spectroscopic data for V1175 Her and NSVS 2669503 show that their spectral types are G7V and K4V, respectively. Photometric solutions of these three objects were obtained with the help of the Wilson-Devinney program. We find that V1175 Her is a semi-detached binary star with a hot spot located on the secondary component, while NSVS 2669503 and 1SWASP J133417.80+394314.4 are contact eclipsing binaries with contact factors of f = 1.070 ± 0.002% and f = 21.250 ± 0.005%, respectively. Moreover, we found that the orbital period of V1175 Her is increasing at a rate of (+3.1 ± 0.1) × 10-7 days yr-1. This increase may be attributed to a mass-transfer rate from the primary to the secondary component. Finally, we discuss the evolutionary stage of the component stars of these three systems.
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Accepted/In Press date: 21 June 2018
e-pub ahead of print date: 9 August 2018
Published date: 1 September 2018
Keywords:
binaries: eclipsing, stars: activity
Identifiers
Local EPrints ID: 423613
URI: http://eprints.soton.ac.uk/id/eprint/423613
ISSN: 0004-6256
PURE UUID: 1fe3aac6-7f39-4258-bd4e-9117f9fae23f
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Date deposited: 27 Sep 2018 16:30
Last modified: 15 Mar 2024 21:52
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Author:
Hong Peng Lu
Author:
Raul Michel
Author:
Li Yun Zhang
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