Spectroscopic orbit of the ex-eclipsing binain the young open cluster NGC 7209ry SS Lac

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dc.creatorTomasella, Lina
dc.creatorMunari, Ulisse
dc.date1998-05-04
dc.date.accessioned2026-07-07T02:26:45Z
dc.date.available2026-07-07T02:26:45Z
dc.descriptionThe no-longer-eclipsing system SS Lac in the young open cluster NGC 7209 has been recently announced to show a constant radial velocity. Puzzled by this finding, we have monitored the system during 1997 obtaining 24 Echelle+CCD spectra over 8 orbital revolutions. Our spectra reveal a nice orbital motion with periodic splitting and merging of spectral lines from both components. An accurate orbit has been derived, together with individual masses of the stars. SS Lac presents a moderately eccentric orbit and a probably full synchronization between stellar rotation and orbital revolution.
dc.description5 pages, 2 figures, LaTeX, accepted for publication in Astron.Astrophys. Main Journal
dc.identifierhttps://arxiv.org/abs/astro-ph/9805019
dc.identifierhttp://arxiv.org/abs/astro-ph/9805019
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/12401
dc.subjectAstrophysics
dc.titleSpectroscopic orbit of the ex-eclipsing binain the young open cluster NGC 7209ry SS Lac
dc.typetext

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