EDP Sciences logo
Subscriber Authentication Point
Search
Menu
Home All issues Volume 624 (April 2019) A&A, 624 (2019) A74 Full HTML
Free Access
%PDF-1.6 % 7 0 obj <> endobj xref 7 74 0000000016 00000 n 0000002028 00000 n 0000002103 00000 n 0000002224 00000 n 0000002459 00000 n 0000002613 00000 n 0000002760 00000 n 0000003012 00000 n 0000003171 00000 n 0000003354 00000 n 0000003537 00000 n 0000004588 00000 n 0000004674 00000 n 0000004813 00000 n 0000005128 00000 n 0000005515 00000 n 0000005923 00000 n 0000006082 00000 n 0000006200 00000 n 0000006480 00000 n 0000006697 00000 n 0000006916 00000 n 0000007065 00000 n 0000007382 00000 n 0000007700 00000 n 0000008162 00000 n 0000008358 00000 n 0000008719 00000 n 0000008910 00000 n 0000009961 00000 n 0000010118 00000 n 0000010272 00000 n 0000010669 00000 n 0000010883 00000 n 0000010940 00000 n 0000011236 00000 n 0000012639 00000 n 0000012786 00000 n 0000012969 00000 n 0000014020 00000 n 0000014177 00000 n 0000014263 00000 n 0000014560 00000 n 0000014718 00000 n 0000015092 00000 n 0000015389 00000 n 0000015704 00000 n 0000016112 00000 n 0000016345 00000 n 0000016482 00000 n 0000016869 00000 n 0000017153 00000 n 0000017290 00000 n 0000017517 00000 n 0000017718 00000 n 0000017959 00000 n 0000018118 00000 n 0000018236 00000 n 0000018516 00000 n 0000018906 00000 n 0000019055 00000 n 0000019373 00000 n 0000019835 00000 n 0000020095 00000 n 0000020482 00000 n 0000020673 00000 n 0000021724 00000 n 0000021878 00000 n 0000022275 00000 n 0000022489 00000 n 0000022537 00000 n 0000022828 00000 n 0000023990 00000 n 0000001776 00000 n trailer <<0B88A2B7B3677D49BF7DDD318ECAB590>]>> startxref 0 %%EOF 80 0 obj <>stream xb``pg``f   ܜJoL gHhM;aӲ( 7Y%mAR=+~mp%ՀS^TǰOޣ56]s:,ۘ9I S%9R׵$XCCbifVo(C~,C#@0- endstream endobj 8 0 obj <> endobj 9 0 obj <>/Encoding<>>>>> endobj 10 0 obj <>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI]>>/Type/Page>> endobj 11 0 obj <>stream H*2PHbw.=cCM LM -Ms=sM\ 0&&zƦPfNW endstream endobj 12 0 obj <> endobj 13 0 obj <>stream xmK D>\`Ę+t#tSU%4" S𱌇[˥-EߏeR?)P@p&/\w+-9b@.7xulmYG endstream endobj 14 0 obj <>stream x240S065U276r,#s# $`Ad_ endstream endobj 15 0 obj <>stream x261R036R2,rLa \P%H237ATpcbr endstream endobj 16 0 obj <> endobj 17 0 obj [600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 318 401 460 838 636 950 780 275 390 390 500 838 318 361 318 337 636 636 636 636 636 636 636 636 636 636 337 337 838 838 838 531 1000 684 686 698 770 632 575 775 752 295 295 656 557 863 748 787 603 787 695 635 611 732 684 989 685 611 685 390 337 390 838 500 500 613 635 550 635 615 352 635 634 278 278 579 278 974 634 612 635 635 411 521 392 634 592 818 592 592 525 636 337 636 838 600 636 600 318 352 518 1000 500 500 500 1342 635 400 1070 600 685 600 600 318 318 518 518 590 500 1000 500 1000 521 400 1023 600 525 611 318 401 636 636 636 636 337 500 500 1000 471 612 838 361 1000 500 500 838 401 401 500 636 636 318 500 401 471 612 969 969 969 531 684 684 684 684 684 684 974 698 632 632 632 632 295 295 295 295 775 748 787 787 787 787 787 838 787 732 732 732 732 611 605 630 613 613 613 613 613 613 982 550 615 615 615 615 278 278 278 278 612 634 612 612 612 612 612 838 612 634 634 634 634 592 635 592] endobj 18 0 obj <>stream x36P0C. endstream endobj 19 0 obj <>stream x30Q0Pb3s3s#KC.# 3@.X 261R044L͍b0@YKA9P9\iOT/ endstream endobj 20 0 obj <>stream xEPC1 =`,{wHۿ=JFp!Z?ZK oGFA= 3A΄@xFnvpμ39Zpә\'mBITqTqLύׁlӑ!KI%&~S*)[*EH䁓M4,?Cb̠Q0qGuٜ9-L|X&Q)2>'\N}䢥Uޑ"ۡW%Qէ<Y> endstream endobj 21 0 obj <>stream x5RKrC1ۿSpΘ}tj'+-@B./YK~%ۥW%B>R-G- Q=2'":xa>N)x_xN;2$KMH=I+4t~&+s{rj X+)$=Hr7VސWg%&&MܕBXtLX㰄*aՃM5fcdxLP} #GMv²[6!D3,($Nc$ Ұ9 9e, mh%zМaמE[{ endstream endobj 22 0 obj <>stream x5R9@ } ] v͜~߆_ CVie!U-.Im W%ڥ Pt,6˯JH+kLwIi"Eo7o}=@.^ AS(i|Ъc(ew 4<3}(~_K&(? _osџa`Ś}@*z`yT endstream endobj 23 0 obj <>stream xMA "OPDtz_NE5jK02kP)U0\ 2IL{qIqzz"X endstream endobj 24 0 obj <>stream x36P0P040F@B!H Y@8&+ & endstream endobj 25 0 obj <>stream x5P C1g dVukm;aBXȔy)K>:L." u%ʚ +`p&^7`i5tႦ.B%|u{OxjrvC` jMX>stream x=O 1 =8z,[\FR"@eG \b9/i?iX5GaXn,JW-^ B]HޭLd<;p'>TYz@;DYIXV]ju=̪'k)PTBt{ o/ endstream endobj 27 0 obj <>stream x5K! C9/0R~p6aZ /KL`c%TO>$#I9P7OhL 3l%t2[VNH6f^S $jeF2T`<3\脇ʰN1fF~{20c endstream endobj 28 0 obj <>stream xE 0D{`~&f( JpO{:2Sa ,S`5FR죰n_uzS*Ovvq= endstream endobj 29 0 obj <>stream xMQmD1 \ky R]oC /)%K [UC?13,=?TPbht/"+ߏe s`&4`oI&ռ3d‰ATwM,3V7: lx%D`r Z`Q+ tĺv7C/਺x} K{,|BL;wI#fR:=b}@e+ (\* endstream endobj 30 0 obj <>stream x-Q9AzBsˑ C :-qPO+Uwu9HTM]vf5,?c 7zqxLu5{kOfP2+qSușO \ ȹeƌ#M!RH&3AQ~#aU#j \Ks4;<9GW +ET<pC7ҹ^s0XM7/=[ endstream endobj 31 0 obj <>stream x=RKn1)@Mr[T /1 %?ꒈ3L~r]Qljg!.6Xr_rњbO/ȴTXVݣC(-װr{d`Jn@CHYAaPl( WԬtb ) ٠[]aP[[xfޑ3qYk?=Q2QMg|2RCgB'`$Ip#A 1qOl)V;ޒ{,\L'ib?lK\+E(~Aq|XdDw#h% 0xyDhDԎ=(ͱ&{ǫvzcw. endstream endobj 32 0 obj <> endobj 33 0 obj <>/Type/Font/CharProcs 32 0 R>> endobj 34 0 obj <> endobj 35 0 obj [600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 318 401 460 838 636 950 780 275 390 390 500 838 318 361 318 337 636 636 636 636 636 636 636 636 636 636 337 337 838 838 838 531 1000 684 686 698 770 632 575 775 752 295 295 656 557 863 748 787 603 787 695 635 611 732 684 989 685 611 685 390 337 390 838 500 500 613 635 550 635 615 352 635 634 278 278 579 278 974 634 612 635 635 411 521 392 634 592 818 592 592 525 636 337 636 838 600 636 600 318 352 518 1000 500 500 500 1350 635 400 1070 600 685 600 600 318 318 518 518 590 500 1000 500 1000 521 400 1028 600 525 611 318 401 636 636 636 636 337 500 500 1000 471 617 838 361 1000 500 500 838 401 401 500 636 636 318 500 401 471 617 969 969 969 531 684 684 684 684 684 684 974 698 632 632 632 632 295 295 295 295 775 748 787 787 787 787 787 838 787 732 732 732 732 611 608 630 613 613 613 613 613 613 995 550 615 615 615 615 278 278 278 278 612 634 612 612 612 612 612 838 612 634 634 634 634 592 635 592] endobj 36 0 obj <>stream x5ͻ 0О)n1}Tmp,xĹ $$n&R9ܼ$[#auhhC-J2{z`#i& endstream endobj 37 0 obj <>stream x5A b?DD@kd늂r^/7 8 -kCM%A;Ẽ:ڰA B endstream endobj 38 0 obj <>stream x=K0D9h9OFvzQEQkJR*ٛS4q7)f JAuӗaQzW tt+,JOEKX1b)z0Lk6QS" EJ7 PQ\Gom;A jlHHE/iB_uشg|ECݸGY1|js&L.ײ8V 4JXjKz]chjlehvex? o;JϞ7\}z<-琬B-6a,]9}~*=}F endstream endobj 39 0 obj <>stream x=;! C{N#?g36o%%[(:rxI;iN5p7co"SAkNEr*:刹 /N&i&'W$Pa=.uV bEiH0"Ř o\>{L3 endstream endobj 40 0 obj <> endobj 41 0 obj <>/Type/Font/CharProcs 40 0 R>> endobj 42 0 obj <>/Resources<>/Shading<<>>/Font<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI]/ExtGState<>/A2<>>>/Pattern<<>>>>/Type/XObject/BBox[0 0 593.222 553.826]/PTEX.FileName(./figure5.pdf)/FormType 1>>stream xXKOA ϯc8{E@J="* P"HE#߯gdcl C~_?-G>=L@Jch/4$;OcOdCFs W"#ւHc*q"PW\Fd>DIm;n<"e >;CN XkL *-]HG Dm4b$Cڂ#bgv:)gOY*)AUQ  7xv&k瓫V[|).4=L:NQsWj,{QP_䤛 隆SufJqK (6 Th"zfj!=cv\]_\\7ӧˆ1@ȺKfq@MI$$C*tI,4/@la tI<e3I+#fPIHpkJHhM%bW]1x n TY NqrfB #DTVـ+/h~:m ^q";TU~LJM(, OoRvaDUΎvExY?U <ʥ[6ϒkNN>,fSwOfёւ]@ 1j5T봎^}äR$Scnc>4G1Pc!004 D7`ٟp0*HVkh=,> endobj 44 0 obj <> endobj 45 0 obj [600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 318 401 460 838 636 950 780 275 390 390 500 838 318 361 318 337 636 636 636 636 636 636 636 636 636 636 337 337 838 838 838 531 1000 684 686 698 770 632 575 775 752 295 295 656 557 863 748 787 603 787 695 635 611 732 684 989 685 611 685 390 337 390 838 500 500 613 635 550 635 615 352 635 634 278 278 579 278 974 634 612 635 635 411 521 392 634 592 818 592 592 525 636 337 636 838 600 636 600 318 352 518 1000 500 500 500 1342 635 400 1070 600 685 600 600 318 318 518 518 590 500 1000 500 1000 521 400 1023 600 525 611 318 401 636 636 636 636 337 500 500 1000 471 612 838 361 1000 500 500 838 401 401 500 636 636 318 500 401 471 612 969 969 969 531 684 684 684 684 684 684 974 698 632 632 632 632 295 295 295 295 775 748 787 787 787 787 787 838 787 732 732 732 732 611 605 630 613 613 613 613 613 613 982 550 615 615 615 615 278 278 278 278 612 634 612 612 612 612 612 838 612 634 634 634 634 592 635 592] endobj 46 0 obj <>stream x5 0D{8R[.{9>G-dCxI9>Q4Zo:Hsd33}d4I!rY)z>~ endstream endobj 47 0 obj <>stream x36P0C. endstream endobj 48 0 obj <>stream xEK!CGp;.:l%(3{Lnd;0sJlLN\#T޼頉{DΣY jg.7ɭFiwyHT9λi Yմlk?*MlVWw'K~0%?Q|]7g'W&kyI_ʣq)$_SS{ginV9 endstream endobj 49 0 obj <>stream x=0C{`c~>Tml='a~־#)G.2Ey(uT$\pq[Ӊ endstream endobj 50 0 obj <>stream x=;0 C{Ȍd'>2VI(/u< i& b;w؞D/)ϡ+E:Ū0[M*K õ}74uK hY pu;Gw5<TQ!OJ|<(!\{0FS@\^BAjI'>stream x5O;! 9.m`ϳT/od HDG&^S=Ä=Ba$5븛ſ]3 b0řvX'qNcDlc]L(!0%)}9:Nb.a}1WOdP=&ՍI4^2`a$YNkGQ"1'2Ҝb :; *s>h][M endstream endobj 52 0 obj <>stream xEPC1 =`,{wHۿ=JFp!Z?ZK oGFA= 3A΄@xFnvpμ39Zpә\'mBITqTqLύׁlӑ!KI%&~S*)[*EH䁓M4,?Cb̠Q0qGuٜ9-L|X&Q)2>'\N}䢥Uޑ"ۡW%Qէ<Y> endstream endobj 53 0 obj <>stream xERKr0\ 3gNWp:<  2=eH6dWdՐFD)򹼖\nJ?72ͮЪG6F5+# CzVQdv!:Sp,Cu)mA#o<rLn[ :[m@ s` )(UI­\';PЪt79`Òho>F, f1H'N=q:őpI8@/ u:eMžBRq"n]ElO ?*3b Ԓ枾?9 endstream endobj 54 0 obj <>stream xEu1 CsUx:?G i@xx= r]Ņ ?޶42܍e@N"WI3Tb\/:"̒@#|:C[ۙ~:!**na.@RԏQꚡ*+kjڿ"}\Ne{g+W}: endstream endobj 55 0 obj <>stream x32P0P4& f )\@B.H  %[B4AXf&fI8"ɴ endstream endobj 56 0 obj <>stream x5RKrC1ۿSpΘ}tj'+-@B./YK~%ۥW%B>R-G- Q=2'":xa>N)x_xN;2$KMH=I+4t~&+s{rj X+)$=Hr7VސWg%&&MܕBXtLX㰄*aՃM5fcdxLP} #GMv²[6!D3,($Nc$ Ұ9 9e, mh%zМaמE[{ endstream endobj 57 0 obj <>stream x=PC1= |7˥m$B6BLɔ:ʒ)O>Kbnd6%*E/% }ՖC4h9~ 3*K6p*3 mtV[ Ф`׶ r " JMrR=ot-N=Dkq: DpFjtaŲC5=kz7hGt4CָR endstream endobj 58 0 obj <>stream x336S0P0 F )\@>,́,# .C c0mbl`fbdY 1 r endstream endobj 59 0 obj <>stream xEC1DsUA wJo-%S'"h0yM%V,&rAJ1xN1븨ufihW3=5'M<[ }@8IP1}bv">G)#qbn fW7y endstream endobj 60 0 obj <>stream xE ! CT>՞0ABA";06Ѣ76իc,zRV鐇Pi0QąYLCaΘȖ2MlTv<e~ma, U^ ?KwUBS0 endstream endobj 61 0 obj <>stream xMMB!0h\vK!CGFGx1 2&^$ m;,1',#`kܛG ADko5u~~]ԥu# ȎP p=&T)8T bSUhV=^; endstream endobj 62 0 obj <>stream xMA "OPDtz_NE5jK02kP)U0\ 2IL{qIqzz"X endstream endobj 63 0 obj <>stream x36P0P040F@B!H Y@8&+ & endstream endobj 64 0 obj <>stream x5P C1g dVukm;aBXȔy)K>:L." u%ʚ +`p&^7`i5tႦ.B%|u{OxjrvC` jMX>stream x5Qq0 54sۿ @;a@dJ\UGM>`!S֖{&UF!}W2j]* UYFp&I8d Rӿccz endstream endobj 66 0 obj <>stream xE 0D{`~&f( JpO{:2Sa ,S`5FR죰n_uzS*Ovvq= endstream endobj 67 0 obj <>stream x-Q9AzBsˑ C :-qPO+Uwu9HTM]vf5,?c 7zqxLu5{kOfP2+qSușO \ ȹeƌ#M!RH&3AQ~#aU#j \Ks4;<9GW +ET<pC7ҹ^s0XM7/=[ endstream endobj 68 0 obj <>stream x=RKn1)@Mr[T /1 %?ꒈ3L~r]Qljg!.6Xr_rњbO/ȴTXVݣC(-װr{d`Jn@CHYAaPl( WԬtb ) ٠[]aP[[xfޑ3qYk?=Q2QMg|2RCgB'`$Ip#A 1qOl)V;ޒ{,\L'ib?lK\+E(~Aq|XdDw#h% 0xyDhDԎ=(ͱ&{ǫvzcw. endstream endobj 69 0 obj <> endobj 70 0 obj <>/Type/Font/CharProcs 69 0 R>> endobj 71 0 obj <> endobj 72 0 obj [600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 318 401 460 838 636 950 780 275 390 390 500 838 318 361 318 337 636 636 636 636 636 636 636 636 636 636 337 337 838 838 838 531 1000 684 686 698 770 632 575 775 752 295 295 656 557 863 748 787 603 787 695 635 611 732 684 989 685 611 685 390 337 390 838 500 500 613 635 550 635 615 352 635 634 278 278 579 278 974 634 612 635 635 411 521 392 634 592 818 592 592 525 636 337 636 838 600 636 600 318 352 518 1000 500 500 500 1350 635 400 1070 600 685 600 600 318 318 518 518 590 500 1000 500 1000 521 400 1028 600 525 611 318 401 636 636 636 636 337 500 500 1000 471 617 838 361 1000 500 500 838 401 401 500 636 636 318 500 401 471 617 969 969 969 531 684 684 684 684 684 684 974 698 632 632 632 632 295 295 295 295 775 748 787 787 787 787 787 838 787 732 732 732 732 611 608 630 613 613 613 613 613 613 995 550 615 615 615 615 278 278 278 278 612 634 612 612 612 612 612 838 612 634 634 634 634 592 635 592] endobj 73 0 obj <>stream x5A b?DD@kd늂r^/7 8 -kCM%A;Ẽ:ڰA B endstream endobj 74 0 obj <>stream x=K0D9h9OFvzQEQkJR*ٛS4q7)f JAuӗaQzW tt+,JOEKX1b)z0Lk6QS" EJ7 PQ\Gom;A jlHHE/iB_uشg|ECݸGY1|js&L.ײ8V 4JXjKz]chjlehvex? o;JϞ7\}z<-琬B-6a,]9}~*=}F endstream endobj 75 0 obj <>stream x=;! C{N#?g36o%%[(:rxI;iN5p7co"SAkNEr*:刹 /N&i&'W$Pa=.uV bEiH0"Ř o\>{L3 endstream endobj 76 0 obj <> endobj 77 0 obj <>/Type/Font/CharProcs 76 0 R>> endobj 78 0 obj <>/Resources<>/Shading<<>>/Font<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI]/ExtGState<>/A2<>>>/Pattern<<>>>>/Type/XObject/BBox[0 0 572.269 553.826]/PTEX.FileName(./figure6.pdf)/FormType 1>>stream xMO1 >zd JzTC :=KX2$o<3E =| Xo*W4>NnwY 'V=RR%Ń,**&X$$-;cG‡bjZ ހLBўdw6ߣAI,a~D #KUj,E7+`6Nʐngy< $m`oZX&ޘd%>Le<RZO9 fZB&Un2ڒJx TΏL|k̢HƳ68x%U9ՈG: *GRpiR.vokXءHlEǣR1HC Vhz 3t=܅drX7f"Y{4" Sm#aBZZ?j}U/EiCz ^| > endobj 1 0 obj <> endobj 2 0 obj <> endobj 3 0 obj <> endobj 4 0 obj <> endobj 5 0 obj <>stream 2019-03-19T08:54:33+05:30 2019-03-19T08:53:25+05:30 2019-03-19T08:54:33+05:30 TeX application/pdf uuid:835c63c0-fa29-4df7-b7bc-20e6dae59ecc uuid:32425a74-e4f2-4f6f-9263-87bc9f162160 pdfTeX-1.40.18 endstream endobj 6 0 obj <> endobj xref 0 7 0000000000 65535 f 0000024050 00000 n 0000025241 00000 n 0000025329 00000 n 0000025405 00000 n 0000025457 00000 n 0000028859 00000 n trailer <> startxref 116 %%EOF

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.