CIHM Microfiche Series (Monographs) ICMH ColSection de microfiches (monographies) Canadian Institute for Historical Microreproductions / Institut canadien microreproductions historiques 1999 Technical and Bib' 3giaphic Notes ' Noi^s techniques et bibliographiques e Institute has attempted to obtain the best orign-.e. 3y available for filming. 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Les diagrammes suivants illustrent la mithode. 1 2 3 1 2 3 4 5 6 MICROCOPY RISOIUTION TEST CHART mNSI cnil l!.0 't^l I "AR' Mm i 1.0 I.I 2 8 |||Z5 : Ilia li: mil 2.0 11 1.8 ••25 il.4 11.6 ^ APPLIED IM/IGE inc PC' vWtv ■ ^"^ ^^^"^ IHIJI.ICATIONS (ii- nil. DOMINION OBSERVATORY Ol rWVA, CANADA V(,i. IV, No. n MKASIRKS OF TlIK I{ ADl AI. VKI.OCITIKS OF FOrUTFFN STARS Hv .1 ». CANNON. M \ HdSS l.'it ^a = ()" 4(r-r), 5= +.")4" 4C)', >poctnil typr A, man. •'>--^> I'liii. l):lt, .lllli;lll Piiy Aiiu ti Srnt. IJ S.|,t. -Ji ^;(J1 del l."i s:i(is Nov. -Jii 1917 I'll.s . r.'l.IlT s: ISM I'.Mi S, Vc locily ;fj - 7-4 ■(!(> -17t vVJ — '2 ■ •'» ".VJ -lj:i i;7 -14 :-. »40.-) i Ian :J .")!t7r)17 :i'2 1 rot lessor Frost has tlir(>f iiica- iM of his plates shows both coiupo nciits, t hicli show a raiigo of 40 km. The he velocity from the main component heinp; ires of tliis star w -24 km., am 1 that ot t he otlier +11."! km Only one comp< our p lat( 1 i'i;nsi;i. B3. mnp. ment w .-) • 40) as shown hy );iy V. Iciciiy 0,:m'i'.i.s7.'> -:i7;! ;!S()-s7;i -i:i n :!s7s.iu - 7 -J :!<.u 7:i7 l',14-77l) 11)1 sn9 1,090 817 092-847 -;«■)■ -17 4 -r.7-s CAl MT 403 P04-17 66700—1 254 lilll.n \ 1 |(.\> (i| nil DdMlMu.N iiU>|J,\ AluUV 111 .1/;. ./., WW . I7l'. jirc nivcii I'niir uhxTvaliinis l)y AdiiMis liaviiin a ranno 4) I'lair l):ilr ,!uli:iri l);,y \! M.VI l-rli Jt; sHi.-, .Mar, ;! sis:! .Mar. Js St'.U Ajir. 1 KilT IIUs .luliiui !):iy V 'locity LMJ1.:!IHI (l:i2 + •-'(> tin; lils +:!:!■ 4 tMl-.^lIlT -f 22 ■ 2 ti.')(i (jNi +37;i fiHi ■ .")0:i +2r>-!i CHS-fiOO + 22 Mran + 2S.0 I'ri'st and .Vdam- piihiish three measures ot this star in Atstroiihy.sirnl Journal, XIX, page 1.".."), havinc a range nf 22 km.- from +4 to +20. a IIVDH.K lrt = '.f 22'"-7. 5= -S° 14', spectral type K2, mag. 2-2) PLitc Date SihMI .Mar ■) Sll',11 .Mar ■) Mill Mar !l sill.-, Mar. '.) S44.^ Irl. IT N 1 tr, I'll. 17 I'lIT nils hilian Day 2,42 ,2!M) ti2ti 222 2<»7 (ilU 642 ti.'jS ti42 f)t'l. ^Xit. Hnatek puhlishes seven observations having a range of 9 km.— from Tins to -f- 1!IS. Campbell in L.O.B.. YU, Xo. 229, gives the "Observed Velocity' as — .S ■ .j ECOLL HULntUhiiigut bibLiumtuu: .\ii:.\>i Hi-.s (ti nil, itxDiAi, M.i.iM I HI,.- m loi n ii i,n >i \i;- 255 .'li I K.-,K .M,\J(IIU.- (a=()'' Jir-O, 6= +.')2° 2o , sped nil type .\, man. -i ■*>'>) Plate |):.l. 1918 ,lilil;.li I);.\ St7> Win. 17 MS 1 .\Inr ■_'s MU2 .Vpr 1 ..',4J1,<170 1171 lisl (i;u i;-s mil M.Mll, \.'ln,lls + i".t:) +-a-i f m; l.lioNl.-^ lO -r' (a=10h 11'"- 1, 5= +23° 55', spectral type F, man. ■^■^'>')) Plate Dm,- Jiilciii Dmv \, urH\ . .sr27 Miir. •-'() Utl7 2,421,314-7:11 -17-:j Caiiipbell fL.(}.Ii., \ I, Xu. llt'.t) gi\cs six iiK^asurcs raiiKiiin from —'>■'> to — 'JtJ-7. MOSS -JsOi ('a=l(V' 27''-."). 5= +40° .")7', spectral typ(^ F. mau;. 4-,S4) I'lutf Dntp Julian IXij Velocity Hr)it> Apr . ■2r, . May 1 i2'.)) { rus.K .\i\.i()Uis (a= IT' 12'"-9, S= +32° ti', spectral type (1, iiiag. 4-41) Plate S497 Hoi") Datt litis Ai>r '.» A,,r 2,-, illiali Dav 2.121,(>'.i;i(i2S 7U'.t ■,")(;,■! V(-lcii il\ 29 (I -27 II Campbell and Wright (Ap. J.. XII, j). 2.54) gi\(> ten ineasun's raimiiifi: froiii — L'i U to — 8-4. K'lstner gives four measures (.4. A'., 4750), range — 22-5 to -Itj 1. ('am])l)eirs "Observed Velocitv" iL.O.Ii., VII, No. 22!M is -Hi. ■j.jt; I'l Itl.h \l|('\~ ij| nil |iii\IIM(i\ ulisi.liV V |. 0= -)--•'" -\'. -|ir<-ttMl type (Ip. map;. l-7s) I'l,, t- i 11,1. I'lIT --I7J M,,x Is .lull. 11. |l:> \ ilocity , rjl.:iii7 liTii -18-9 "llii^ >lar i> aiiiiouiic.d a l.inarv in I. OH.. \ I, |v_', fniiii live iiicaMircs laiiKiiiii Innj -•_• (i to -2(1 2. I.' II 111! \( I l\|> (a=lJ'' 17"'- J, 5= 4-02" jj', >pc(tial lypr .\J. inaji. •")'13j I'lii. i'm; .lull, .11 i)av H12S I Ma! ■:!■. »15«l L\iu .■:; 8161 JA|.r J.- 8163 'M.n :; 8180 JM:,> -j: 8184 .Ma\ -JM 8188 I.May .ill »mj lliihi. :, »li»S l.luilr 111 WU !.lui„ JT 8210 j.luU 8223 !.' V 1.- 8488 |.\i.i 8507 Apr I'.i 8514 |A|u J I KXil iMav 2.S. I'Ms ■.' 1 •Jl,:ill-7>.f.' .ilJ si:t :;il (147 :;.-..' Ml .17rp71.s :i7s lini :(7<)-7s.") ■ ~ct\ :HM> 7.'i.'> 1117 7(11 ii.".mM) ir. r,:(.-, tisci sen 7(i:'.7li7 7II.S Sis 74'.' ('..-M \ ilui llv t- J s + 17 I'l + I.S s -Zi i -l.-i '^ -111 s -11 _ ■> li (1 t ■-' — .s 1 1 r .'! li -1(1 S — i7 -11 7 + ->1 ."> -27- ti .\ period of 24:?!» days suit.- all llir al».v(> oliscivatioiis with the exception of No. S4SS whieh is (iejiendent on the iiieasiiiv of (,ne line only. This period also suits four •Mlegheiiy measures puhlished by .Ionian. LM (A.NI.S \ LXATICOIUM («■-= \W ;i(r -4, 5= +4!r :51'-(1, speetral tyi)e .V.i, maj;. 4-li;i) I'bto (1910 T6tiS 'M .luiian l)a\" ■j.rjii,."'.i.'i sn ■-'. r-'i,ini'.)iiis v,i.i,;iv ;(i-4 Lee fiives cinht ol.sei vatioiis (.1/). ,/., XXXIX, p. 40) in all of whieh he has measured both eoiiipoiiriil>. Camiibell n'wc^ -1!) as tiie ••()bs(>rved \eloeity" in L.O.H., Ml, \,,. 211, and - 1() in No. '22'.* of the -ame \ohmic, from more obscrxations. Ml \>l Id > <>| nil ||\|)|\|. \||ni|lll>o| 111! 1(11 IN VIAl!.- 70 III Un I IS («= 17' Itrs, 5= +:n" :{.-»'•!), >|..'.tr;il lyp<- A, iiuig. :,■ 121 I'Imi,. l)ttl.> .luli.in Dity Vflncity 11117 S2J7 .lnl> ir. l'H^ -', r.M.l.'li (i:,7 - :),'■. 4 s.".l:; ^.'.■Jti 11 -•I 7IIS 7iil 7:11 7.",1 1 10 1 + :. ;j -22 1 A(l:iiri-.KiN<- lln' icMilt- nf liiivc Mount \\il> .l.>.T\ali()iis in .XstroplnjsicilJoiutuil. vol. WW , pane 177. ||i~ Nclocitics arv -IS, -lit;, and -\\ km. per second. Itos.s .".l(|-_' la= I'/ 52"' 'J, 5- +:i8° 15', spectral type 113, mug. 4-9) I'h, Ir N2.-1.') ,s-.>s:! S2!i:! l)..l,. .luliaii Day V. lonlv AiiK. 2 Ann. 21 .•^cpt, f> S(|il, 1) I!tl7 2,12I.44:tT7l 102 (142 47.S t)2(t 4!tl 041 Mciin -24 ;i -:i!t () -20 7 -40 -:J2 5 Campbell, in L.O.H., \ I, No. l',»5, gives the veloeity of this star as -Sa-U km. per second. Dominion Ob.servatory Ottawa Deremher, 1018. ■y r'jt JT.^^ ■ :. ■ Vt^^L.- .V MMMiiiiiBii