Combined Analysis of the Binary Lens Caustic‐crossing Event MACHO 98‐SMC‐1 | Zendy

C. Afonso | Zendy; C. Alard | Zendy; J. Albert | Zendy; J. Andersen | Zendy; R. Ansari | Zendy; É. Aubourg | Zendy; P. Bareyre | Zendy; F. F. Bauer | Zendy; JeanPhilippe Beaulieu | Zendy; A. Bouquet | Zendy; S. Char | Zendy; X. Charlot | Zendy; F. Couchot | Zendy; C. Coutures | Zendy; F. Derue | Zendy; R. Ferlet | Zendy; J. F. Glicenstein | Zendy; B. Goldman | Zendy; Andrew Gould | Zendy; D. Graff | Zendy; M. Gros | Zendy; J. Haïssinski | Zendy; J.–Ch. Hamilton | Zendy; D. Hardin | Zendy; J. de Kat | Zendy; Alex Kim | Zendy; T. Lasserre | Zendy; É. Lesquoy | Zendy; C. Loup | Zendy; C. Magneville | Zendy; J. B. Marquette | Zendy; É. Maurice | Zendy; A. Milsztajn | Zendy; M. Moniez | Zendy; N. PalanqueDelabrouille | Zendy; O. Perdereau | Zendy; L. Prévôt | Zendy; N. Regnault | Zendy; J. Rich | Zendy; M. Spiro | Zendy; A. VidalMadjar | Zendy; L. Vigroux | Zendy; S. Zylberajch | Zendy; C. Alcock | Zendy; R. A. Allsman | Zendy; D. R. Alves | Zendy; T. S. Axelrod | Zendy; A. C. Becker | Zendy; K. H. Cook | Zendy; A. J. Drake | Zendy; K. C. Freeman | Zendy; K. Griest | Zendy; Lindsay King | Zendy; M. J. Lehner | Zendy; S. L. Marshall | Zendy; D. Minniti | Zendy; B. A. Peterson | Zendy; M. R. Pratt | Zendy; Peter J. Quinn | Zendy; A. W. Rodgers | Zendy; P. B. Stetson | Zendy; C. W. Stubbs | Zendy; William J. Sutherland | Zendy; A. Tomaney | Zendy; T. Vandehei | Zendy; Sun Hong Rhie | Zendy; D. P. Bennett | Zendy; P. Chris Fragile | Zendy; Bradley R. Johnson | Zendy; J. Quinn | Zendy; A. Udalski | Zendy; M. Kubiak | Zendy; M. K. Szymański | Zendy; G. Pietrzyński | Zendy; P. R. Woźniak | Zendy; K. Żebruń | Zendy; Michael D. Albrow | Zendy; J. Caldwell | Zendy; D. L. DePoy | Zendy; M. Dominik | Zendy; B. S. Gaudi | Zendy; J. Greenhill | Zendy; K. Hill | Zendy; Stephen R. Kane | Zendy; Roland Martín | Zendy; J. W. Menzies | Zendy; R. M. Naber | Zendy; Richard W. Pogge | Zendy; K. R. Pollard | Zendy; P. D. Sackett | Zendy; K. C. Sahu | Zendy; P. Vermaak | Zendy; R. Watson | Zendy; A. Williams | Zendy

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Combined Analysis of the Binary Lens Caustic‐crossing Event MACHO 98‐SMC‐1

Author(s) -

C. Afonso,

C. Alard,

J. Albert,

J. Andersen,

R. Ansari,

É. Aubourg,

P. Bareyre,

F. F. Bauer,

JeanPhilippe Beaulieu,

A. Bouquet,

S. Char,

X. Charlot,

F. Couchot,

C. Coutures,

F. Derue,

R. Ferlet,

J. F. Glicenstein,

B. Goldman,

Andrew Gould,

D. Graff,

M. Gros,

J. Haïssinski,

J.–Ch. Hamilton,

D. Hardin,

J. de Kat,

Alex Kim,

T. Lasserre,

É. Lesquoy,

C. Loup,

C. Magneville,

J. B. Marquette,

É. Maurice,

A. Milsztajn,

M. Moniez,

N. PalanqueDelabrouille,

O. Perdereau,

L. Prévôt,

N. Regnault,

J. Rich,

M. Spiro,

A. VidalMadjar,

L. Vigroux,

S. Zylberajch,

C. Alcock,

R. A. Allsman,

D. R. Alves,

T. S. Axelrod,

A. C. Becker,

K. H. Cook,

A. J. Drake,

K. C. Freeman,

K. Griest,

Lindsay King,

M. J. Lehner,

S. L. Marshall,

D. Minniti,

B. A. Peterson,

M. R. Pratt,

Peter J. Quinn,

A. W. Rodgers,

P. B. Stetson,

C. W. Stubbs,

William J. Sutherland,

A. Tomaney,

T. Vandehei,

Sun Hong Rhie,

D. P. Bennett,

P. Chris Fragile,

Bradley R. Johnson,

J. Quinn,

A. Udalski,

M. Kubiak,

M. K. Szymański,

G. Pietrzyński,

P. R. Woźniak,

K. Żebruń,

Michael D. Albrow,

J. Caldwell,

D. L. DePoy,

M. Dominik,

B. S. Gaudi,

J. Greenhill,

K. Hill,

Stephen R. Kane,

Roland Martín,

J. W. Menzies,

R. M. Naber,

Richard W. Pogge,

K. R. Pollard,

P. D. Sackett,

K. C. Sahu,

P. Vermaak,

R. Watson,

A. Williams

Publication year - 2000

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/308561

Subject(s) - gravitational microlensing , physics , astrophysics , binary number , lens (geology) , radius , caustic (mathematics) , mass ratio , einstein radius , limb darkening , small magellanic cloud , wavelength , stars , gravitational lens , optics , mathematics , galaxy , arithmetic , computer security , redshift , computer science , mathematical physics

We fit the data for the binary-lens microlensing event MACHO 98-SMC-1 from 5different microlensing collaborations and find two distinct solutionscharacterized by binary separation d and mass ratio q: (d,q)=(0.54,0.50) and(d,q)=(3.65,0.36), where d is in units of the Einstein radius. However, therelative proper motion of the lens is very similar in the two solutions, 1.30km/s/kpc and 1.48 km/s/kpc, thus confirming that the lens is in the SmallMagellanic Cloud. The close binary can be either rotating or approximatelystatic but the wide binary must be rotating at close its maximum allowed rateto be consistent with all the data. We measure limb-darkening coefficients forfive bands ranging from I to V. As expected, these progressively decrease withrising wavelength. This is the first measurement of limb darkening for ametal-poor A star.Comment: 29 pages + 9 figures + 2 tables, submitted to Ap

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