Study of Eclipsing Binary and Multiple Systems in OB
Associations. II. The Cygnus OB Region: V443 Cyg, V456 Cyg, and
V2107 Cyg

J 2014

Study of Eclipsing Binary and Multiple Systems in OB Associations. II. The Cygnus OB Region: V443 Cyg, V456 Cyg, and V2107 Cyg

BAKIS, V., H. HENSBERGE, S. BILIR, H. BAKIS, F. YILMAZ et. al.

Základní údaje

Originální název

Study of Eclipsing Binary and Multiple Systems in OB Associations. II. The Cygnus OB Region: V443 Cyg, V456 Cyg, and V2107 Cyg

Název česky

Studie zákrytových dvojhvězd a násobných systémů v OB asociacích. II. Oblast Cygnus OB: V443 Cyg, V456 Cyg a V2107 Cyg

Autoři

BAKIS, V. (792 Turecko), H. HENSBERGE (56 Belgie), S. BILIR (792 Turecko), H. BAKIS (792 Turecko), F. YILMAZ (792 Turecko), E. KITAN (792 Turecko), O. DEMIRCAN (792 Turecko), Miloslav ZEJDA (203 Česká republika, garant, domácí) a Zdeněk MIKULÁŠEK (203 Česká republika, domácí)

Vydání

The Astronomical Journal, IOP PUBLISHING LTD, 2014, 0004-6256

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10308 Astronomy

Stát vydavatele

Velká Británie a Severní Irsko

Utajení

není předmětem státního či obchodního tajemství

Impakt faktor

Impact factor: 4.024

Kód RIV

RIV/00216224:14310/14:00076685

Organizační jednotka

Přírodovědecká fakulta

DOI

http://dx.doi.org/10.1088/0004-6256/147/6/149

UT WoS

000336262600025

Klíčová slova česky

zákrytové dvojhvězdy; vzdálenosti hvězd; fundamentální parametry hvězd

Klíčová slova anglicky

binaries: eclipsing; stars: distances; stars: fundamental parameters

Štítky

AKR, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 11. 4. 2015 15:19, Ing. Andrea Mikešková

Anotace

V originále

Three presumably young eclipsing binary systems in the direction of the Cygnus OB1, OB3, and OB9 associations are studied. Component spectra are reconstructed and their orbits are determined using light curves and spectra disentangling techniques. V443 Cyg and V456 Cyg have circular orbits while the light curve of V2107 Cyg imposes a slightly eccentric orbit (e = 0.045+/-0.03). V443 Cyg harbors F-type stars, not young early-A stars as previously suggested in the literature based solely on photometry. It appears to be situated in the foreground (distance 0.6+/-0.2 kpc) of the young stellar populations in Cygnus. V456 Cyg, at a distance of 0.50+/-0.03 kpc, consists of a slightly metal-weak A-type star and an early-F star. The age of both systems, on or very near to the main sequence, remains uncertain by an order of magnitude. V2107 Cyg is a more massive system (8.9+/-2 and 4.5 ± 1.2 Ms) at 1.5+/-0.5 kpc and, also kinematically, a strong candidate-member of Cyg OB1. The more massive component is slightly evolved and appears to undergo non-radial beta Cep-type pulsations. The Doppler signal of the secondary is barely detectable. A more extensive, asteroseismological study is necessary to fix masses more precisely. Nevertheless, the position of the primary in the H-R diagram confines the age reasonably well to 20+/-Myr, indicating that for Cyg OB1 has a similar extent of star formation history as that established for Cyg OB2.

Citovat

BAKIS, V., H. HENSBERGE, S. BILIR, H. BAKIS, F. YILMAZ, E. KITAN, O. DEMIRCAN, Miloslav ZEJDA a Zdeněk MIKULÁŠEK. Study of Eclipsing Binary and Multiple Systems in OB Associations. II. The Cygnus OB Region: V443 Cyg, V456 Cyg, and V2107 Cyg. The Astronomical Journal. IOP PUBLISHING LTD, 2014, roč. 147, č. 6, s. 149-161. ISSN 0004-6256. Dostupné z: https://dx.doi.org/10.1088/0004-6256/147/6/149.

@article{1200098,
   author = {Bakis, V. and Hensberge, H. and Bilir, S. and Bakis, H. and Yilmaz, F. and Kitan, E. and Demircan, O. and Zejda, Miloslav and Mikulášek, Zdeněk},
   article_number = {6},
   doi = {http://dx.doi.org/10.1088/0004-6256/147/6/149},
   keywords = {binaries: eclipsing; stars: distances; stars: fundamental parameters},
   language = {eng},
   issn = {0004-6256},
   journal = {The Astronomical Journal},
   title = {Study of Eclipsing Binary and Multiple Systems in OB Associations. II. The Cygnus OB Region: V443 Cyg, V456 Cyg, and V2107 Cyg},
   volume = {147},
   year = {2014}
}

TY  - JOUR
ID  - 1200098
AU  - Bakis, V. - Hensberge, H. - Bilir, S. - Bakis, H. - Yilmaz, F. - Kitan, E. - Demircan, O. - Zejda, Miloslav - Mikulášek, Zdeněk
PY  - 2014
TI  - Study of Eclipsing Binary and Multiple Systems in OB Associations. II. The Cygnus OB Region: V443 Cyg, V456 Cyg, and V2107 Cyg
JF  - The Astronomical Journal
VL  - 147
IS  - 6
SP  - 149-161
EP  - 149-161
PB  - IOP PUBLISHING LTD
SN  - 00046256
KW  - binaries: eclipsing
KW  - stars: distances
KW  - stars: fundamental parameters
N2  - Three presumably young eclipsing binary systems in the direction of the Cygnus OB1, OB3, and OB9 associations are studied. Component spectra are reconstructed and their orbits are determined using light curves and spectra disentangling techniques. V443 Cyg and V456 Cyg have circular orbits while the light curve of V2107 Cyg imposes a slightly eccentric orbit (e = 0.045+/-0.03). V443 Cyg harbors F-type stars, not young early-A stars as previously suggested in the literature based solely on photometry. It appears to be situated in the foreground (distance 0.6+/-0.2 kpc) of the young stellar populations in Cygnus. V456 Cyg, at a distance of 0.50+/-0.03 kpc, consists of a slightly metal-weak A-type star and an early-F star. The age of both systems, on or very near to the main sequence, remains uncertain by an order of magnitude. V2107 Cyg is a more massive system (8.9+/-2 and 4.5 ± 1.2 Ms) at 1.5+/-0.5 kpc and, also kinematically, a strong candidate-member of Cyg OB1. The more massive component is slightly evolved and appears to undergo non-radial beta Cep-type pulsations. The Doppler signal of the secondary is barely detectable. A more extensive, asteroseismological study is necessary to fix masses more precisely. Nevertheless, the position of the primary in the H-R diagram confines the age reasonably well to 20+/-Myr, indicating that for Cyg OB1 has a similar extent of star formation history as that established for Cyg OB2.
ER  -

BAKIS, V., H. HENSBERGE, S. BILIR, H. BAKIS, F. YILMAZ, E. KITAN, O. DEMIRCAN, Miloslav ZEJDA a Zdeněk MIKULÁŠEK. Study of Eclipsing Binary and Multiple Systems in OB Associations. II. The Cygnus OB Region: V443 Cyg, V456 Cyg, and V2107 Cyg. \textit{The Astronomical Journal}. IOP PUBLISHING LTD, 2014, roč.~147, č.~6, s.~149-161. ISSN~0004-6256. Dostupné z: https://dx.doi.org/10.1088/0004-6256/147/6/149.

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