000002043 001__ 2043
000002043 005__ 20160701171657.0
000002043 0247_ $$2DOI$$a10.1051/0004-6361:20053655
000002043 037__ $$aASTROimport-200
000002043 100__ $$aDe Cat, P.
000002043 245__ $$aA spectroscopic study of southern (candidate) γ Doradus stars. I. Time series analysis
000002043 260__ $$c2006
000002043 520__ $$aWe present the results of a spectroscopic study of 37 southern (candidate) γ Doradus stars based on échelle spectra. The observed spectra were cross-correlated with the standard template spectrum of an F0-type star for easier detection of binary and intrinsic variations. We identified 15 objects as spectroscopic binaries, including 7 new ones, while another 3 objects are binary suspects. At least 12 objects show composite spectra. We could determine the orbital parameters for 9 binaries, of which 4 turned out to be ellipsoidal variables. For 6 binaries, we estimated the expected time-base of the orbital variations. Clear profile variations were observed for 17 objects, pointing towards stellar pulsation. For 8 of them, we have evidence that the main spectroscopic and photometric periods coincide. Our results, in combination with prior knowledge from the literature, lead to the classification of 10 objects as new bona fide γ Doradus stars, 1 object as a new bona fide δ Scuti star, and 8 objects as constant stars. Finally, we determined the projected rotational velocity by two independent methods. The resulting v sin i values range from 3 to 135 {km s-1}. For the bona fide γ Doradus stars, the majority has v sin i below 60 {km s-1}. 
000002043 700__ $$a Eyer, L.
000002043 700__ $$a Cuypers, J.
000002043 700__ $$a Aerts, C.
000002043 700__ $$a Vandenbussche, B.
000002043 700__ $$a Uytterhoeven, K.
000002043 700__ $$a Reyniers, K.
000002043 700__ $$a Kolenberg, K.
000002043 700__ $$a Groenewegen, M.
000002043 700__ $$a Raskin, G.
000002043 700__ $$a Maas, T.
000002043 700__ $$a Jankov, S.
000002043 773__ $$c281-292$$i1$$pAstronomy and Astrophysics$$v449$$y2006
000002043 85642 $$ahttp://esoads.eso.org/abs/2006A%26A...449..281D
000002043 905__ $$apublished in
000002043 980__ $$aREFERD