The Library
The orbital period of V458 Vulpeculae, a post-double common-envelope nova
Tools
Rodríguez-Gil, P., Santander-Garcia, M., Knigge, Christian, Corradi, R. L. M., Gaensicke, B. T., Barlow, Michael J., Drake, Jeremy J., Drew, J. E., Miszalski, B., Napiwotzki, Ralf, Steeghs, D., Wesson, R., Zijlstra, A. A., Jones, D., Liimets, T., Muñoz-Darias, T., Pyrzas, S. and Rubio-Díez, M. M. (2010) The orbital period of V458 Vulpeculae, a post-double common-envelope nova. Monthly Notices of the Royal Astronomical Society: Letters, Vol.407 (No.1). L21-L25. doi:10.1111/j.1745-3933.2010.00895.x ISSN 1745-3925.
|
Text
WRAP_Steeghs_orbital_period_1006.1075v1.pdf - Accepted Version Download (439Kb) | Preview |
Official URL: http://dx.doi.org/10.1111/j.1745-3933.2010.00895.x
Abstract
We present time-resolved optical spectroscopy of V458 Vulpeculae (Nova Vul 2007 No. 1) spread over a period of 15 months starting 301 d after its discovery. Our data reveal radial-velocity variations in the He iiλ5412 and He iiλ4686 emission lines. A period analysis of the radial-velocity curves resulted in a period of 98.096 47 ± 0.000 25 min (0.068 122 55 ± 0.000 000 17 d) which we identify with the orbital period of the binary system. V458 Vul is therefore the planetary nebula central binary star with the shortest period known. We explore the possibility of the system being composed of a relatively massive white dwarf (M1≳ 1.0 M⊙) accreting matter from a post-asymptotic giant branch star which produced the planetary nebula observed. In this scenario, the central binary system therefore underwent two common-envelope episodes. A combination of previous photoionization modelling of the nebular spectra, post-asymptotic giant branch evolutionary tracks and the orbital period favour a mass of M2∼ 0.6 M⊙ for the donor star. Therefore, the total mass of the system may exceed the Chandrasekhar mass, which makes V458 Vul a Type Ia supernova progenitor candidate.
Item Type: | Journal Article | ||||
---|---|---|---|---|---|
Subjects: | Q Science > QB Astronomy | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
Library of Congress Subject Headings (LCSH): | Accretion (Astrophysics), Double stars, Stars, New, Cataclysmic variable stars | ||||
Journal or Publication Title: | Monthly Notices of the Royal Astronomical Society: Letters | ||||
Publisher: | Wiley | ||||
ISSN: | 1745-3925 | ||||
Official Date: | September 2010 | ||||
Dates: |
|
||||
Volume: | Vol.407 | ||||
Number: | No.1 | ||||
Page Range: | L21-L25 | ||||
DOI: | 10.1111/j.1745-3933.2010.00895.x | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access | ||||
Date of first compliant deposit: | 18 December 2015 | ||||
Date of first compliant Open Access: | 18 December 2015 | ||||
Funder: | Science and Technology Facilities Council (Great Britain) (STFC) |
Data sourced from Thomson Reuters' Web of Knowledge
Request changes or add full text files to a record
Repository staff actions (login required)
View Item |
Downloads
Downloads per month over past year