Apsidal motion and TESS light curves of three southern close
eccentric eclipsing binaries: GM Nor, V397 Pup, and PT Vel

J 2024

Apsidal motion and TESS light curves of three southern close eccentric eclipsing binaries: GM Nor, V397 Pup, and PT Vel

WOLF, Marek; Petr ZASCHE; J. KARA; Miloslav ZEJDA; Jan JANÍK et al.

Základní údaje

Originální název

Apsidal motion and TESS light curves of three southern close eccentric eclipsing binaries: GM Nor, V397 Pup, and PT Vel

Autoři

WOLF, Marek; Petr ZASCHE; J. KARA; Miloslav ZEJDA; Jan JANÍK ; M. MAŠEK; M. LEHKY; J. MERC; Anna RICHTERKOVÁ; Dalibor HANŽL; Zdeněk MIKULÁŠEK; S. N. DE VILLIERS a Jiří LIŠKA

Vydání

Astronomy and Astrophysics, EDP Sciences, 2024, 0004-6361

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10308 Astronomy

Stát vydavatele

Francie

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 5.800

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14310/24:00137606

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova anglicky

binaries: eclipsing; stars: early-type; stars: fundamental parameters; stars: individual: GM Nor; stars: individual: V397 Pup; stars: individual: PT Vel

Štítky

14312040, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 11. 12. 2024 14:26, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

The study of apsidal motion in eccentric eclipsing binaries provides an important observational test of theoretical models of stellar structure and evolution. New ground-based and space-based photometric data have been obtained and archival spectroscopic measurements were used in this study of three detached early-type and southern-hemisphere eccentric eclipsing binaries GM Nor (P = 1(d).88, e = 0.05), V397 Pup (3(d).00, 0.30), and PT Vel (1(d).80, 0.12). Their TESS observations in several sectors have also been included and the corresponding light curves were solved using the PHOEBE code. As a result, new accurate photoelectric times of minimum light have been obtained. The newly completed O - C diagrams were analyzed using all reliable timings found in the literature and calculated using the TESS light curves. New or improved values for the elements of apsidal motion were obtained. Using ESO archive spectroscopy, for V397 Pup, the precise absolute parameters were newly derived: M-1 = 3.076(35) M-circle dot, M-2 = 2.306(35) M-circle dot, and R-1 = 2.711(55) R-circle dot, R-2 = 1.680(55) R-circle dot. For PT Vel the absolute dimensions were improved: M-1 = 2.204(25) M-circle dot, M-2 = 1.638(25) M-circle dot, and R-1 = 2.108(30) R-circle dot, R-2 = 1.605(30) R-circle dot. For GM Nor, the less accurate absolute parameters based on the light curve analysis were evaluated: M-1 = 1.94(15) M-circle dot, M-2 = 1.84(14) M-circle dot, and R-1 = 2.27(20) R-circle dot, R-2 = 2.25(20) R-circle dot. We found more precise and relatively short periods of apsidal motion of about 80, 335, and 160 years, along with the corresponding internal structure constants, log k(2), -2.524, -2.361, and -2.563, for GM Nor, V397 Pup, and PT Vel, respectively. Relativistic effects are small but not negligible, making up to 10% of the total apsidal motion rate in all systems. No marks of the presence of the third body were revealed in the light curves, on the O - C diagrams, or in the reduced spectra of the eccentric systems studied here.

Návaznosti

90232, velká výzkumná infrastruktura

Název: AUGER-CZ III

Citovat

WOLF, Marek; Petr ZASCHE; J. KARA; Miloslav ZEJDA; Jan JANÍK; M. MAŠEK; M. LEHKY; J. MERC; Anna RICHTERKOVÁ; Dalibor HANŽL; Zdeněk MIKULÁŠEK; S. N. DE VILLIERS a Jiří LIŠKA. Apsidal motion and TESS light curves of three southern close eccentric eclipsing binaries: GM Nor, V397 Pup, and PT Vel. Astronomy and Astrophysics. EDP Sciences, 2024, roč. 690, A231, s. 1-10. ISSN 0004-6361. Dostupné z: https://doi.org/10.1051/0004-6361/202450303.

@article{2451323,
   author = {Wolf, Marek and Zasche, Petr and Kara, J. and Zejda, Miloslav and Janík, Jan and Mašek, M. and Lehky, M. and Merc, J. and Richterková, Anna and Hanžl, Dalibor and Mikulášek, Zdeněk and de Villiers, S. N. and Liška, Jiří},
   article_number = {A231},
   doi = {https://doi.org/10.1051/0004-6361/202450303},
   keywords = {binaries: eclipsing; stars: early-type; stars: fundamental parameters; stars: individual: GM Nor; stars: individual: V397 Pup; stars: individual: PT Vel},
   language = {eng},
   issn = {0004-6361},
   journal = {Astronomy and Astrophysics},
   title = {Apsidal motion and TESS light curves of three southern close eccentric eclipsing binaries: GM Nor, V397 Pup, and PT Vel},
   url = {https://www.aanda.org/articles/aa/pdf/2024/10/aa50303-24.pdf},
   volume = {690},
   year = {2024}
}

TY  - JOUR
ID  - 2451323
AU  - Wolf, Marek - Zasche, Petr - Kara, J. - Zejda, Miloslav - Janík, Jan - Mašek, M. - Lehky, M. - Merc, J. - Richterková, Anna - Hanžl, Dalibor - Mikulášek, Zdeněk - de Villiers, S. N. - Liška, Jiří
PY  - 2024
TI  - Apsidal motion and TESS light curves of three southern close eccentric eclipsing binaries: GM Nor, V397 Pup, and PT Vel
JF  - Astronomy and Astrophysics
VL  - 690
IS  - A231
SP  - 1-10
EP  - 1-10
PB  - EDP Sciences
SN  - 00046361
KW  - binaries: eclipsing
KW  - stars: early-type
KW  - stars: fundamental parameters
KW  - stars: individual: GM Nor
KW  - stars: individual: V397 Pup
KW  - stars: individual: PT Vel
UR  - https://www.aanda.org/articles/aa/pdf/2024/10/aa50303-24.pdf
N2  - The study of apsidal motion in eccentric eclipsing binaries provides an important observational test of theoretical models of stellar structure and evolution. New ground-based and space-based photometric data have been obtained and archival spectroscopic measurements were used in this study of three detached early-type and southern-hemisphere eccentric eclipsing binaries GM Nor (P = 1(d).88, e = 0.05), V397 Pup (3(d).00, 0.30), and PT Vel (1(d).80, 0.12). Their TESS observations in several sectors have also been included and the corresponding light curves were solved using the PHOEBE code. As a result, new accurate photoelectric times of minimum light have been obtained. The newly completed O - C diagrams were analyzed using all reliable timings found in the literature and calculated using the TESS light curves. New or improved values for the elements of apsidal motion were obtained. Using ESO archive spectroscopy, for V397 Pup, the precise absolute parameters were newly derived: M-1 = 3.076(35) M-circle dot, M-2 = 2.306(35) M-circle dot, and R-1 = 2.711(55) R-circle dot, R-2 = 1.680(55) R-circle dot. For PT Vel the absolute dimensions were improved: M-1 = 2.204(25) M-circle dot, M-2 = 1.638(25) M-circle dot, and R-1 = 2.108(30) R-circle dot, R-2 = 1.605(30) R-circle dot. For GM Nor, the less accurate absolute parameters based on the light curve analysis were evaluated: M-1 = 1.94(15) M-circle dot, M-2 = 1.84(14) M-circle dot, and R-1 = 2.27(20) R-circle dot, R-2 = 2.25(20) R-circle dot. We found more precise and relatively short periods of apsidal motion of about 80, 335, and 160 years, along with the corresponding internal structure constants, log k(2), -2.524, -2.361, and -2.563, for GM Nor, V397 Pup, and PT Vel, respectively. Relativistic effects are small but not negligible, making up to 10% of the total apsidal motion rate in all systems. No marks of the presence of the third body were revealed in the light curves, on the O - C diagrams, or in the reduced spectra of the eccentric systems studied here.
ER  -

WOLF, Marek; Petr ZASCHE; J. KARA; Miloslav ZEJDA; Jan JANÍK; M. MAŠEK; M. LEHKY; J. MERC; Anna RICHTERKOVÁ; Dalibor HANŽL; Zdeněk MIKULÁŠEK; S. N. DE VILLIERS a Jiří LIŠKA. Apsidal motion and TESS light curves of three southern close eccentric eclipsing binaries: GM Nor, V397 Pup, and PT Vel. \textit{Astronomy and Astrophysics}. EDP Sciences, 2024, roč.~690, A231, s.~1-10. ISSN~0004-6361. Dostupné z: https://doi.org/10.1051/0004-6361/202450303.

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