Revista Mexicana de Astronomía y Astrofísica ISSN: 0185-1101 [email protected] Instituto de Astronomía México

Niemela, V. S.; Gamen, R. C.; Solivella, G. R.; Benaglia, P.; Reig, P.; Coe, M. J. Wack 2134 (= wr 21a): a new wolf-rayet binary Revista Mexicana de Astronomía y Astrofísica, vol. 26, agosto, 2006, pp. 39-40 Instituto de Astronomía Distrito Federal, México

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Cómo citar el artículo Número completo Sistema de Información Científica Más información del artículo Red de Revistas Científicas de América Latina, el Caribe, España y Portugal Página de la revista en redalyc.org Proyecto académico sin fines de lucro, desarrollado bajo la iniciativa de acceso abierto © 2006: Instituto de Astronomía, UNAM - Third International Meeting of Dynamic Astronomy in Latin America Ed. Leopoldo Infante, Monica Rubio & Silvia Torres-Peimbert that liding al. al. a tected to the W der WR21a, Mereghetti pact sp binary obtained t determined p Key comp Presen v optical solares, bien sumamen Nuestros W de R gen un w elo erio evMexAA WN+OB ac e ectrum o 6 5 4 7 2 3 1 tina. 1. the emisi´ 2005). 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WR reflector. digital RESUL National e that th 1994 y orbital ctrum on under observ Argen ectrum h estelar. WR et del p obtained v us cida in ectro stellar Astronomico alue erio tina. depicts of and orbital 4 21a BINAR t Our Cassegrain 2005 WR yp far. sistema and — La and resolution Astronomical 21a, optical agreemen orbital d fuen TS tina. ed of e Univ p optico ´ of 2006 describ radiaci´ of ST Observ erio of winds Hemos emission sp 1999. WR M. 21a with Here b the with te sho es one 31.6 ARS: ectra ersities et WR The d binario. at J. m´ w de sp wing Y binary t is 21a m of mass een of en on as the the of atory Co w ectral da sp b the ec uestra determinado radiaci´ El sp a 21a et 31.6 sho e our INDIVID- de X of ectrograph helle una ys. the lines e w ectra system 1.9m 2.5m it 2001 presen 5 follo een Observ Leoncito en w function La 8 is (LCO), sp to motion da images In binary tonces masas orbita ´ radial l on ´ in Plata, ıneas sp CON- ectra illus- wing w ys. tele- b Du- this and t e ere ec- its X. 39 a- of a a © 2006: Instituto de Astronomía, UNAM - Third International Meeting of Dynamic Astronomy in Latin America Ed. Leopoldo Infante, Monica Rubio & Silvia Torres-Peimbert are This v a to v trograms. namely at within tense (iden WR Fig. Fig. 40 v that brigh tion obtained of (iden note ariations, ariable elo p CASLEO WR a erio In listed cities 2. 21a lines of program 1. tified tified test that p emission all erio Con d WR the 25, He obtained Con from searc corresp X–ra at of in of d tin the The i ab b w (sho splot 21a. i 2.2 with tin elo w table our λ e CASLEO. uum the o one h for 4686, as y v found . uum sp line w radial wn routine e The the source routine onding sp ectrum at then finding sp the rectified the observing 1. in ectra in CASLEO. ectral rectified same could r an In con v con Figure adial the in elo applied in to Emission Figure orbital tro of the of tin w instrumen tin sp cities blue the features an e b duced iraf velo ectrum uum) WR uum) p e blue ha orbital 2), erio early Carina measured sp v city 3 to of p . e whic 21a ectrum erio d w optical Only as as lines the are determined this tal of e O–t to fitting orbit elemen sho d an w h WR resem configuration another. Nebula. radial observ ell line yp of is of the w initial in of sp e 25 ∼ the as the WN gaussians ectrum sp app bles ts, WR all most 32 obtained v ed. absorp- ectrum second NIEMELA elo whic radial radial eared v With da sp t that alue 21a, cit yp W ec- ys. in- as of h y e e ET Fig. orbital W rio sion v Mereghetti, v CASLEO da Benaglia, Cara found, liding binary the an elo ac ys. d AL. ApJ, ApJ, A. The W k der X–ra cit 3. in v of erling, eo, e 2005, winds y Radial solution 31.62 the implies ORBIT system Huc high thank 424, 338, v y P T P ariations . and o WR ., emission S., h L. A., A&A, [HJD] t, da Romero, 943 338 of v v F K V a Belloni, alue J. elo K. AL LCO ys. m that from Bignami, 21a P o ( sin these the M ω [km [km 1970, ust cit A. [deg [da 440, REFERENCES The ) i 2.450.000+ ELEMENTS e of binary y phased b [R [M T most directors ys] for b 2001, s s T oth v − able the G. ] massiv − T., e

ariations Mem. 743 ABLE

1 con 1 quite ] ] ] the ] G. E., Shara, comp mass 1. probably system, tin New with F., use Koribalski, RAS, e uous massiv 1 binary onen and function & of Astron. M., 1184.9 of 31.62 OF 0.48 the the Goldwurm, curv phased 73, 295 140 157 their 8.6 86 & ts arises staff e, WR  He p   Drissen, comp 153,      e of 0.02 erio and Rev., 0.01 3 B., 1 i 0.30 3 3 4 represen that i facilities. the with λ 21A of in d & 4686 onen therefore, 45, WR of A. w the P L. SAA the e ollo ts 31.62 ts. emis- 135 1994, 1989, ha col- 21a the p c O, v k, e- e