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Pregled bibliografske jedinice broj: 313735

V379 Cep: A Quadruple System of Two Binaries

Mayer, P.; Harmanec, P.; Bozic, Hrvoje; Eenens, P.; Guinan, E. F.; McCook, G.; Koubsky, P.; Ruždjak, Domagoj; Sudar, Davor; Slechta, M. et al.
V379 Cep: A Quadruple System of Two Binaries // Binary Stars as Critical Tools & Tests in Contemporary Astrophysics, Proceedings of IAU Symposium #240 / W.I. Hartkopf, E.F. Guinan and P. Harmanec. (ur.).
Cambridge: Cambridge University Press, 2007. str. 499-502 (poster, međunarodna recenzija, cjeloviti rad (in extenso), znanstveni)

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Naslov
V379 Cep: A Quadruple System of Two Binaries

Autori
Mayer, P. ; Harmanec, P. ; Bozic, Hrvoje ; Eenens, P. ; Guinan, E. F. ; McCook, G. ; Koubsky, P. ; Ruždjak, Domagoj ; Sudar, Davor ; Slechta, M. ; Wolf, M. ; Yang, S.

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Binary Stars as Critical Tools & Tests in Contemporary Astrophysics, Proceedings of IAU Symposium #240 / W.I. Hartkopf, E.F. Guinan and P. Harmanec. - Cambridge : Cambridge University Press, 2007, 499-502

Skup
IAU XXVIth General Assembly

Mjesto i datum
Prag, Češka Republika, 14.08.2006. - 25.08.2006

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
eclipsing binaries V379 Cep; spectroscopic binaries; fundamental parameters

Sažetak
Based on several published photometric and spectroscopic studies, V379~Cep (HR~7940) was identified as a 99.76 day eclipsing binary composed of two unusually-low-mass B type stars with projected rotational velocities of 15 and 55 km/s. Our investigation of new series of spectra and UBV observations from several observatories shows that the object is actually a quadruple system: the two observed sets of spectral lines belong to two primaries of two different binaries. The narrower lines belong to component Aa with 99.76 day orbital period while the broader ones belong to component Ba with 159.3 day period. Both binaries revolve around a common centre of gravity with a period of about 6200 days ; this motion is measurable via the change of the systemic velocities of both binaries. Our result resolves the problem of anomalous masses. It is probable that the masses of all four bodies are quite normal for somewhat evolved stars. But the ultimate test must come from interferometric resolution of the AB pair of binaries ; it might be expected that the separation can reach about 40 mas. There is a very good chance that the continuing systematic observations will permit accurate determination of all four individual masses.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA

Projekti:
007-0000000-1364 - Fizikalni procesi u atmosferama Sunca i zvijezda

Ustanove:
Geodetski fakultet, Zagreb

Profili:

Avatar Url Hrvoje Božić (autor)

Avatar Url Domagoj Ruždjak (autor)

Avatar Url Davor Sudar (autor)

Citiraj ovu publikaciju:

Mayer, P.; Harmanec, P.; Bozic, Hrvoje; Eenens, P.; Guinan, E. F.; McCook, G.; Koubsky, P.; Ruždjak, Domagoj; Sudar, Davor; Slechta, M. et al.
V379 Cep: A Quadruple System of Two Binaries // Binary Stars as Critical Tools & Tests in Contemporary Astrophysics, Proceedings of IAU Symposium #240 / W.I. Hartkopf, E.F. Guinan and P. Harmanec. (ur.).
Cambridge: Cambridge University Press, 2007. str. 499-502 (poster, međunarodna recenzija, cjeloviti rad (in extenso), znanstveni)
Mayer, P., Harmanec, P., Bozic, H., Eenens, P., Guinan, E., McCook, G., Koubsky, P., Ruždjak, D., Sudar, D. & Slechta, M. (2007) V379 Cep: A Quadruple System of Two Binaries. U: W.I. Hartkopf, E. (ur.)Binary Stars as Critical Tools & Tests in Contemporary Astrophysics, Proceedings of IAU Symposium #240.
@article{article, author = {Mayer, P. and Harmanec, P. and Bozic, Hrvoje and Eenens, P. and Guinan, E. F. and McCook, G. and Koubsky, P. and Ru\v{z}djak, Domagoj and Sudar, Davor and Slechta, M. and Wolf, M. and Yang, S.}, editor = {W.I. Hartkopf, E.}, year = {2007}, pages = {499-502}, keywords = {eclipsing binaries V379 Cep, spectroscopic binaries, fundamental parameters}, title = {V379 Cep: A Quadruple System of Two Binaries}, keyword = {eclipsing binaries V379 Cep, spectroscopic binaries, fundamental parameters}, publisher = {Cambridge University Press}, publisherplace = {Prag, \v{C}e\v{s}ka Republika} }
@article{article, author = {Mayer, P. and Harmanec, P. and Bozic, Hrvoje and Eenens, P. and Guinan, E. F. and McCook, G. and Koubsky, P. and Ru\v{z}djak, Domagoj and Sudar, Davor and Slechta, M. and Wolf, M. and Yang, S.}, editor = {W.I. Hartkopf, E.}, year = {2007}, pages = {499-502}, keywords = {eclipsing binaries V379 Cep, spectroscopic binaries, fundamental parameters}, title = {V379 Cep: A Quadruple System of Two Binaries}, keyword = {eclipsing binaries V379 Cep, spectroscopic binaries, fundamental parameters}, publisher = {Cambridge University Press}, publisherplace = {Prag, \v{C}e\v{s}ka Republika} }

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