Äîêóìåíò âçÿò èç êýøà ïîèñêîâîé ìàøèíû. Àäðåñ îðèãèíàëüíîãî äîêóìåíòà : http://star.arm.ac.uk/preprints/386lp.pdf Äàòà èçìåíåíèÿ: Tue Mar 7 18:02:35 2006 Äàòà èíäåêñèðîâàíèÿ: Mon Oct 1 23:05:40 2012 Êîäèðîâêà: Mac-cyrillic Ïîèñêîâûå ñëîâà: m 8

hq ? { ? xz˜ { l ` n 8Ÿ o

n˜ n ?

l h l m nŸ o I? nm

? w ? ¿m ?o o l n+? +

h? l ÷ po ¿ m

? á m n n R

m m h l h

?o ÷ n˜ % h m n

á l hq mz{ s t pœ n hq ¿

m ? n+ ? mhq w{ o { ¿ x {

n+ + 8 xn˜ w? n ¿óst m á m

n + wm q v i } bm ? ? ¿m

m R ny zt ?m n 8

i q ??o wm ÷ ?

{ ' 4o m z wm }t q

h? án{ z? m nŸ m n˜ h ¿l n Sh st q i z } hny n{}yt y? wm m m R }} hqhq ¿{¿{

m t 'œ s{ i? qn{ ?ë? i? n{ ?

?v s  shy nt h{ }S| t y h{ z St

v ~ i ?y q { ' | n ~ ~ ~ { R 0 v y ¿~ ? t n t S { R~ t nqy h{ ™ z

m h y z h s nz{ q 0t~ S ™}{ ny ?r zth Stzv iR h S{zr s znr q ni~ ~ h w{h {zv }? wyS? h h { s{ zy  z{y s{ ?v hq z{

{ Srs{ q zSy m r hT { s{ z0ä q ?m?? ? ~ ? hœ { }~ z ys{ zvnm ht}? h ny s{ s S hq ~ { n?r ~ ~

á s{ l nq ? t R+ ~nx zs zq x } 0? q ns zy t z{ n nv h ?~zt z z st n h z{ ~

h

x

h ? r h 8? s zq z w? hm i~ ? {| n t 0ä hq á|{ n?}t q ?~ nz &+ ?

x v i~z S{ hT 0r 0{ ? Rx { zy | z{ã â? sv 0~ hR ~ R

? n  ' nn u s nzyy h{ z

zy n R~ ?~ t }| q S}{ zy sy nx nq s sq i~ hq { }~ }{ y y z{ ? v R } nq m s{  y n0? z s{ nq } ynr s T| s{q nq t hy n s{ ~ ?tzq zt s ? v ~ ~ stzr q z? {} ? zq S? S { r}{ q ~ p{ h R { h Sy  h? hr z{ { z nx hs z n t m Rä w äá? h˜? ' l hŸ ? n t t ì ~z n ~ ?? R? ë ?ä + + 1?n÷? I+ ê+ ? ê +?+ h S{ { h r z i 0 z{ ë n v h+ ~ l ~ nq st ê y n+ h ht s{ hq } { y h }{ qzv z? ~ z n z sv w{ ~ Rx RR

n{ | ~ t f~ st n q zt i~ x 'hr {z ~ s qn{+ ? nu? ?+ s ~ zq nê l ?+ ê ê ? n p ?êŸ ? + l ? z n? ? z{n sv { ~~ Sts{ ~ q rn

q ~ z A hR z{ R n t nhSt w{u s hr }? 'y { ?y }~ y R ? } y0 œ 0 {{ z |z{ t sv v i~ S{ nr n  fx ™? } sq {T T{| v i~ n h h ¿{ { ~ i~i? tn{{ ì z? z nhn t{ ? ht  ? z n u s y p pR l ?+ ? ? n?+ l??? ? éé ? iî çæðïòñ ååå ?? ? ???? é éé – ƒƒ sƒsƒ nu ?? iíèè çæçæçæçæ åååå ~ }~ hy hq { { | i~ Ty { h Sx n{ nuz{ st v hq s ™ ny t sS{ zq Srs ~ hy s{hy sy { ny ? t  á

{'

¿r n t s y | ~ | }t nq u s nyzr t S{ ™ "r àt s{ nr y s qi| s{ q zy ' ? ?

S{ nr n  8x y ~ z{ h v s{ ~ hq ¿{ S ÿ ?

? z n y z{ ~ z h S{ ~ z rhq å n?

n w{ nu x St s{ q Å n?

hm z? ?  ' s q i~ h{ stn ?q t } zq z } n fy St ? sy hy ny St i~ Srny z nq n t nu h t {z }~ ƒ sƒ ?

}z{ zq ~ 1t{

v s ~ Sy | s zu zq

z

n ~St h h n z{

iS{ ~ hr ns ~nt st

s{ s yq z

zq h s{ ny ix i z{??

| ht n S{ %t

t z Sr n n 4 nq {

z{ n i~st q s{ 0| s sy {

zu q zn } hy z { h

t y zy { z{ i?

~ h S{ vnq ~ t R{ i| ?{

}~ nq y r s{ ?zu z n n

q s s ny ~ z t st v S{y i~z S{ 0r ??r i ~ wt ~ n %t ~ yst q }~z y n n st S5q

h| st nq h{ n t hR s {q ? t n 'svst r z{zr tz S ' ry ::

m hy z{ : n?zu zr htn {s hq RR }~z{ y 0v z S{zh {h hr h~{ s{ hi~ q { ~ { ? h? ?i?™{ z{h? z{zn t  { {5 Rx x zr s ~ p~s q T?hy oi~ z{ n+ { n? s? n˜ ™y h+ h l
Figure 7. LTE model spectrum for V652 Her matching the UKIRT J-band spectrum.

z{ ??

z{ i v { b~ hq { n i s ¿{ Tq st m sr œ sr q H QC

z z sy ~n q ? i~ h w{ ? ~s{ h~ hh S{}{ ? zu

hs  ?

nqS{ ?t r }{ zq }? nq Ry n { hr} zqs{ zq R? s R n huR { %œ I(

~ s ny | ht }| ~ q ny z ht n S{ Tt z{  pz h w g R) 8

st S{nq "r { n n hy s{ ~ qh h ~ ~| hy s{

Iu s r v ~

n t} } y zq { ~ }t{ Stst nq nr u zq ~

h s s{?y q 8| z{ n s ~h{ n ht {

q i? t Sz n t t } S t

z n nv ™t u z s{v zq ~s ~ n sts{ { n 'r st q nr s{ s y q h s{ hy nq zq { z{q s v y ~ n nq s{ zq s{~ nq st ~ zt iR z{ z{ y 8 s nv q %C B( z sr v q p A@ 9

q}~ h y{ s S?y i n0 hr { n t s Ry h ? ~ }~ ny S h pthq { iR ~S? sr Iy s{ v u~

s{ ~ y }

}y ny St %r z n t zy zi n{z ? fx ? "? zy }{ n y s nq ~ St ? uzu hR ss z zyzq ¿v Rs ny? ~ht S{}{h zqS{ r s hm y 8? z hq { n 0 ? n s{ ? nq hyzy {h? s {|nq n pt hq { hR| ~ ~S t y? i~ z{ n ?v t u { |m zty h Sv z{ n S ~ st y z ? z zn ? h| zu{ nqs nyt t h { s{ | y i~ h ' { h s{ nr ny h  ? { n{ th| } zt zq z{ svn ny~ sht ~S{ 't r~ v z ?v R nq t }~ 7y hR { z{ | i~ h ' { y n zt o

z n t h s{ fq m  z? ? nmz nn tt wm h }~ s{zx ny fq t k "¿ e dc ba `Y XW VU A¿

T hm s uj

p{  ? n }~ t 8 p  i h fe

h 8 S j T) S(

ny tn S¿h p{ l m R fg Ig H?

~ 0} { nun | Sttz nq zo ty mw f nq x Hg

? sy q nm nv d 8F 8œ R

t  y r h{ | z?{ h m n n{ n } nq Hg H GF

h{ }~ z{ y GP 83

t m nq n ~ ht nt uv S wv

sr }|s nq hq y ts{ hm zy y x E$ D

t }~ x Tw ut sr

nnu hy St ppo mnm q g ih g

l f 8 %œ 7 6 1 5) 43 2) 1 0) ¿ R( "' & %$ # "!   ¿ R?  ? ?œ

V652 Her

Figure 6. UKIRT CGS4 J-band spectrum of V652 Her showing He (labelled by transition) and hydrogen ). Paschen lines (P

{ h i? s-

v s R ny ¿t hq s{ nq: st { q ?

z{ v ~ b zu

n{ nu } ~zq { }~ sy q R ? sv

| v ~ t n }{ tq z{ y v ~ nq t 'i~ y : ™~ zq {r 0|

nt hrny t vn+ n }{ { 5v

z n st q z{ sv ~ zu z  i? ms{ qq Sr}|ht hq S{ zrs{ zy Sr} ynx w{ I p{x iRR hz{ Stq s{ "r }~ ?ny v y } %? y ? s{ 0 zq s T ny ~ zht i S{h}~ hq0 r{ ? n?n z st Shzq z T? z{ s vhq h p~ z{ sy nq t i~ "y 8 s y }{ q z{ ?v R ? n+ st + q v " ~ R n } y q }p { nq ? pti? ~ { R n G? t n { ?uR? ~ z vR n r n s ~ n i| ?{ zy n s nq q }~ ~ hsy} z{ny w S? zt } nrwnq hhn z{ vh{ ~ ~ n st t yz{ }z svzq z ~ } ? y s y zr nr y st~ hnq z{ nu m vt y hS{ zt r ÷s{ sq n˜ 0 ~ h+ i? l z{ S{m sv

Obser vations

Figure 4. A sequence of line profiles for Si , He , He and other ions demonstrates line broadening around minimum radius. Pulsation phase is shown on the left. A single spectrum obtained around maximum radius ( ) is shown for comparison. Rapid acceleration around minimum radius is visible as a change from a red to a blue shift. The core of A He 4713 ? broadens around phase 0.13.

: :::

n? n? ? + ? š

zy u r h? :

z{ v R~ ~ i~ h h{ { z{ { s?z Ix y nr t s{zu y n s q i{

h nn{ zzt ? nv}{ yzu I { ?h| zt z{ h| s ~ p n hq

i i n S{ s zq r svs 0~4~ q ?v v | ~ s{ hy z v z{ ~n ??v t R& zt { n p u } n y ? nv u

{ n ? i~?t { n n{m n? z St | ?z vhnq z{t n }~ n?y

Ar ? b~ nt }t ~b?q ~nx z n˜ p ~ zr n s h

0 hy s{ { y `}~ hq { z n? n s ?t zq m n s{ nh q nt?l p{ | z R v ? ys {nq { Tt n? h y z{ }{ viq i u{ ~ st ~hq stz{ y z S z

{ n ? ? y ~n tzt n h t S{ z{ r vn s~t ? ? y l ~ v y z wR v ?~ zy z 1 n st m q z }~ S ny S sr{ hq z Sr { h i~ z{z{ z{ v T T S }{ zy} m nq n i h{ {z R h z{ t hT S{ s{ Sy nr hn { t AR nt | ? r h z{ h yz{ }~ S vhy { r p ?~ zR ~ ~ n zt s y z S n t nq~ t zn{ zun hu s{{ q n zty ~ v w  p+ "~{ ? 0 ? f~ n ss hqnq ~{t ht R{? Rtn ™ h

Analysis

R?{ } sq z{ h~ h vS{ ~ nr n }x y { h { { ~ S{ h ? r n z{ svsu? ~~ st y z y

UV + visual spectrophotometry

composition

STERNE

High resolution spectrograms

q

Figure 1. Block diagram illustrating the procedures (boxes), inputs (ellipses) and outputs (oval boxes) used in the analysis of high-resolution optical spectra and broad-band spectrophotometr y of V652 Her .

LTE_LINES

Atomic data

Model flux grid

Teff, , Eb-v

FFIT

Model structure grid

Teff, log g, v sin i

v_t, composition

High resolution model grid

SFIT_SYNTH

SPECTRUM

SFIT

v_t

Figure 5. Sections of the average normalized spectrum of near maximum radius (histogram) together with the automatically computed best-fit synthetic spectrum (smooth cur ve: T K km s km s ).

h h h { s{ q s? y nq t n h { ~ }~ sy nhq {s hy~ s{ q { nv vu zs~ }zy ny n zt i|w s{ p' zq imI? h f v? ~ zy n0R s ~ ~ t S{ s nq hr nr hq h{ ? p n nn h? l m ? n t nq i~ 0{ R ~ h S{ ~ h hr s{ zq { s ny| ht ~ S{ h {?r z z s}x ~zq ?' ' ? ? ~~ ? ƒ sƒ ? – nu - n+ n+ p+ n

hm y R ? n œ ' s ~ tnr s{ nq nu 4t hq {? h? n{ w' ? n R? ~ z nr s n hq ~zt S n "t z 0r — ? ƒ s sƒ y ? ? z-

q ?z{ ™s n Iu }? snq nx v n ?' '

hSt nŸ n

s s? 0 z zu t%tz h }t z{ 'q ~ s? nq p R zt v ? ht i~ q t }{ st nq q zt ' ? n }{ st nzt hr z{ 'v' s{ 0R 1{ ht  hR u ? ?

zr s q i~ { z{ r z h S' { zu ? { n˜ h l m n r { h|y vss{ Iyq 0? n h s{ zt nq z pt iR z~ nx ? n- ? -

y z zy 0t n ~ ~ 5y h? ny

n n8 z? z{S ? n?

Figure 3. The run of T , and as a function of phase as derived from the high-resolution spectra. The values of represent the formal solution from the free-parameter fit.

— s y ? ƒ sƒ ? – nu ƒ sƒ —? s y ?

Figure 2. Radial velocity cur ve (top) with ccf widths (middle) and the residual arc shifts (bottom). Note the small velocity errors and the ccf broadening at minimum radius.

Figure 8. Derivation of radius from visual photometr y (Kilkenny & Lynas-Gray 1982: top panel). The angular radius is estimated by fitting model flux distributions corresponding to the spectroscopic T to the visual photometr y (centre). The radius may be deduced from the gradient of with (bottom panel).

References

The mass of V652 Her

4~ q}~ z{ hr s s?nm loy

~ st y z z zv zn? s v{ s }yz? q z? { st { sq 0? hqi~ s{ n 4y{ +

y? y~

hq ~

St {q

n+ ~ + S{ m nhr ts{ zq h~ } { ny t } S{ v nv i~ ~u S{ zt z v rnv ~ u y y ¿v { n h hq nt{ { ~ % h| ? stst nq i~ h uny sy S ny { St nSr t r }z{ zq Tx r ~zr zu z{z vz n z{ } n{ }y zuy h{hq sn{ sq su }~ hqs 0y SyS{ h }~r { ny z{ s hq w{ S? n ~ { znx i| nstp{ q"t R { n s p zy wm~n s hn ny t sv ~y Rhq { hy {0 ~ stn y ? z

ShR ~ ~

{ r pti~ h| { { s y ?vy v ~ vzt r? st ty  ? z ??