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J/A+A/600/L9       NGC 1514 and LoTr 5 radial velocity curves     (Jones+, 2017)

The long-period binary central stars of the planetary nebulae NGC 1514 and LoTr 5. Jones D., Van Winckel H., Aller A., Exter K., De Marco O. <Astron. Astrophys. 600, L9 (2017)> =2017A&A...600L...9J (SIMBAD/NED BibCode)
ADC_Keywords: Binaries, spectroscopic ; Planetary nebulae ; Radial velocities Keywords: binaries: spectroscopic - stars: chemically peculiar - planetary nebulae: individual: LoTr5 - planetary nebulae: individual: NGC 1514 - techniques: radial velocities Abstract: The importance of long-period binaries on the formation and evolution of planetary nebulae is still rather poorly understood, in part due to the lack of central star systems known to comprise such long-period binaries. Here, we report on the latest results from the on-going Mercator-HERMES survey for variability in the central stars of planetary nebulae. We present a study of the central stars of NGC 1514, BD+30 623, the spectrum of which shows features associated with a hot nebular progenitor as well as a possible A-type companion. Cross-correlation of high-resolution HERMES spectra against synthetic spectra shows the system to be a highly eccentric (e∼0.5), double-lined binary with a period of ∼3300 days. Previous studies indicated that the cool component might be a Horizontal Branch star of mass ∼0.55M but the observed radial velocity amplitudes rule out such a low mass. Assuming the nebular symmetry axis and binary orbital plane are perpendicular, the data are more consistent with a post-main-sequence star ascending towards the Giant Branch. We also present the continued monitoring of the central star of LoTr 5, HD 112313, which has now completed one full cycle, allowing the orbital period (P∼2700-days) and eccentricity (e∼0.3) to be derived. To date, the orbital periods of BD+30 623 and HD 112313 are the longest to have been measured spectroscopically in the central stars of planetary nebulae. Furthermore, these systems, along with BD+33 2642, comprise the only spectroscopic wide-binary central stars currently known. Description: Radial velocity measurements of the central stars of the PNe NGC 1514 and LoTr 5. Objects: ---------------------------------------------------------------- RA (2000) DE Designation(s) (file) ---------------------------------------------------------------- 12 55 33.75 +25 53 30.6 PN LoTr 5 = PN G339.9+88.4 (lotr5) 04 09 16.98 +30 46 33.6 NGC 1514 = PN G165.5-15.2 (ngc1514) ------------------------------------------------------------------ File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file lotr5.dat 35 118 Radial velocity measurements of central star of LoTr 5 ngc1514.dat 51 143 Radial velocity measurements of central stars of NGC 1514
See also: V/84 : Strasbourg-ESO Catalogue of Galactic Planetary Nebulae (Acker+, 1992) V/127 : MASH Catalogues of Planetary Nebulae (Parker+ 2006-2008) Byte-by-byte Description of file: lotr5.dat
Bytes Format Units Label Explanations
3- 17 F15.7 d BJD Barycentric Julian Date 21- 27 F7.3 km/s BRV Barycentric radial velocity 31- 35 F5.3 km/s e_BRV Uncertainty of radial velocity measurement
Byte-by-byte Description of file: ngc1514.dat
Bytes Format Units Label Explanations
3- 17 F15.7 d BJD Barycentric Julian Date 21- 26 F6.3 km/s BRV1 Barycentric radial velocity of hot component 30- 34 F5.3 km/s e_BRV1 Uncertainty of radial velocity measurement of hot component 38- 43 F6.3 km/s BRV2 Barycentric radial velocity of cold component 47- 51 F5.3 km/s e_BRV2 Uncertainty of radial velocity measurement of cold component
Acknowledgements: David Jones, djones(at)iac.es
(End) David Jones [IAC, Spain], Patricia Vannier [CDS] 20-Mar-2017
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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