arXiv:1703.05096v2 [astro-ph.SR] 16 Mar 2017 nteiln fL am yteFeihCmuiy tteSpan the at A Community, de Instituto Flemish Canarias. the the of de Muchachos by los de Palma Roque La del Observatorio of island the on Ten ta.19) vni h ih odtosd o aris not do conditions right the bi if the of Even plane 1996). orbital al. the et into (Theuns deposited si also with material rate res cant accretion can with Bondi-Hoyle-Lyttleton wide-binary simple enhanced a the greatly to in circumstances, Asymptotic companion certain a an under to from be, transfer (AGB) simulation mass Branch Hydrodynamic Giant the uncertain. that still demonstrated 2013; have al. is et binaries 2009) Ivanova is wider phase; Marco envelope of PNe De common influence axisymmetric the shaping avoid forming impor- the (which the in question, While binaries beyond 2015). close now al. such et Marco ma of (De fraction tance larger close-binary much true be h the stafact, observations, that central indicated Space-based have 2009a). close-binary ever, al. detectable et approximat Miszalski hosting with sign (CSs; nebulae a (PNe), for of nebulae responsible planetary 20% is pathway of binary fraction a icant that clear now is It Introduction 1. coe ,2018 9, October ⋆ Astrophysics & Astronomy ae nosrain aewt h ectrTlsoe ope Telescope, Mercator the with made observations on Based 1 2 3 5 4 a:NC11 ehius ailvelocities radial techniques: – 1514 NGC ual: G 54 BD 1514, NGC h motneo ogpro iaiso h omto and formation the on binaries long-period of importance The 2017 14, March accepted 2017; 27, February Received 8 opno.Coscreaino ihrslto EMSs ( HERMES high-resolution of Cross-correlation companion. 7 6 yl,alwn h ria eid(P period th orbital of ar monitoring the continued allowing data the cycle, the present perpendicular, also We are Branch. plane Giant orbital binary and axis rnhsa fmass of star Branch n D121 r h ogs ohv enmaue spectrosc measured been BD have with to along longest systems, the are 112313 HD and e words. Key u otelc fcnrlsa ytm nw ocmrs such comprise to cen known the in systems variability star for central survey Mercator-HERMES of on-going lack the to due h ogpro iaycnrlsaso h lntr nebul planetary the of central binary long-period The e nttt eAto´sc eCnra,E325L aua T Laguna, La e-mail: E-38205 Canarias, Astrof´ısica de de Instituto eatmnod srfıia nvria eL aua E- Laguna, La de Astrof´ısica, Universidad de Departamento nttu orSernud,K evn eetjela 2 Celestijnenlaan e-mail: Leuven, KU Sterrenkunde, voor Instituut eshlSineCnr,Erpa pc srnm Centre, Astronomy Space European Centre, Science Herschel Chile U Ciencias, de Astronom´ıa, F´ısica Facultad y de Instituto srnm,Atohsc n srpooisRsac Cent Research Astrophotonics and Astrophysics Astronomy, eateto hsc srnm,McureUiest,S University, Macquarie Astronomy, & Spain Physics Madrid, of 28040 Department 3, Bobadilla de Beatriz ISDEFE, ∼ 0 . ) obelndbnr ihapro of period a with binary double-lined 5), [email protected] [email protected] iais pcrsoi tr:ceial euir–pla – peculiar chemically stars: – spectroscopic binaries: + 30 ◦ ∼ 2,tesetu fwihsosfaue soitdwt h a with associated features shows which of spectrum the 623, .Jones D. .5M 0.55 + 33 aucitn.NGC1514 no. manuscript ◦ 62 opieteol pcrsoi iebnr central wide-binary spectroscopic only the comprise 2642, ⊙ u h bevdrda eoiyapiue ueotsc l a such out rule amplitudes velocity radial observed the but 1 , 2 .VnWinckel Van H. , ∼ 70dy)adecnrct ( eccentricity and days) 2700 G 54adLT 5 LoTr and 1514 NGC ∼ 30dy.Peiu tde niae htteco compone cool the that indicated studies Previous days. 3300 L te othe to etter 3 strof´ısica .Aller A. , gnifi- iesddd apr´s,A.Ga rt˜a11,53 Cas 5030 Breta˜na Valpara´ıso, 1111, Gran de Av. niversidad oecnitn ihaps-ansqec trascending star post-main-sequence a with consistent more e rated ,in y, nary ABSTRACT pect etaaantsnhtcsetasostesse ob hig a be to system the shows spectra synthetic against pectra ow- 0 u 41 01Lue