THE FIRST SIMULTANEOUS MICROLENSING OBSERVATIONS BY TWO SPACE TELESCOPES: <i>SPITZER</i> AND <i>SWIFT</i> REVEAL A BROWN DWARF IN EVENT OGLE-2015-BLG-1319

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dc.contributor.authorShvartzvald, Y.
dc.contributor.authorLi, Z.
dc.contributor.authorUdalski, A.
dc.contributor.authorGould, A.
dc.contributor.authorSumi, T.
dc.contributor.authorStreet, R. A.
dc.contributor.authorNovati, S. Calchi
dc.contributor.authorHundertmark, M.
dc.contributor.authorBozza, V.
dc.contributor.authorBeichman, C.
dc.contributor.authorBryden, G.
dc.contributor.authorCarey, S.
dc.contributor.authorDrummond, J.
dc.contributor.authorFausnaugh, M.
dc.contributor.authorGaudi, B. S.
dc.contributor.authorHenderson, C. B.
dc.contributor.authorTan, T. G.
dc.contributor.authorWibking, B.
dc.contributor.authorPogge, R. W.
dc.contributor.authorYee, J. C.
dc.contributor.authorZhu, W.
dc.contributor.authorTsapras, Y.
dc.contributor.authorBachelet, E.
dc.contributor.authorDominik, M.
dc.contributor.authorBramich, D. M.
dc.contributor.authorCassan, A.
dc.contributor.authorJaimes, R. Figuera
dc.contributor.authorHorne, K.
dc.contributor.authorRanc, C.
dc.contributor.authorSchmidt, R.
dc.contributor.authorSnodgrass, C.
dc.contributor.authorWambsganss, J.
dc.contributor.authorSteele, I. A.
dc.contributor.authorMenzies, J.
dc.contributor.authorMao, S.
dc.contributor.authorPoleski, R.
dc.contributor.authorPawlak, M.
dc.contributor.authorSzymanski, M. K.
dc.contributor.authorSkowron, J.
dc.contributor.authorMroz, P.
dc.contributor.authorKozlowski, S.
dc.contributor.authorWyrzykowski, L.
dc.contributor.authorPietrukowicz, P.
dc.contributor.authorSoszynski, I.
dc.contributor.authorUlaczyk, K.
dc.contributor.authorAbe, F.
dc.contributor.authorAsakura, Y.
dc.contributor.authorBarry, R. K.
dc.contributor.authorBennett, D. P.
dc.contributor.authorBhattacharya, A.
dc.contributor.authorBond, I. A.
dc.contributor.authorFreeman, M.
dc.contributor.authorHirao, Y.
dc.contributor.authorItow, Y.
dc.contributor.authorKoshimoto, N.
dc.contributor.authorLi, M. C. A.
dc.contributor.authorLing, C. H.
dc.contributor.authorMasuda, K.
dc.contributor.authorFukui, A.
dc.contributor.authorMatsubara, Y.
dc.contributor.authorMuraki, Y.
dc.contributor.authorNagakane, M.
dc.contributor.authorNishioka, T.
dc.contributor.authorOhnishi, K.
dc.contributor.authorOyokawa, H.
dc.contributor.authorRattenbury, N. J.
dc.contributor.authorSaito, To.
dc.contributor.authorSharan, A.
dc.contributor.authorSullivan, D. J.
dc.contributor.authorSuzuki, D.
dc.contributor.authorTristram, P. J.
dc.contributor.authorYonehara, A.
dc.contributor.authorJorgensen, U. G.
dc.contributor.authorBurgdorf, M. J.
dc.contributor.authorCiceri, S.
dc.contributor.authorD'Ago, G.
dc.contributor.authorEvans, D. F.
dc.contributor.authorHinse, T. C.
dc.contributor.authorKains, N.
dc.contributor.authorKerins, E.
dc.contributor.authorKorhonen, H.
dc.contributor.authorMancini, L.
dc.contributor.authorPopovas, A.
dc.contributor.authorRabus, M.
dc.contributor.authorRahvar, S.
dc.contributor.authorScarpetta, G.
dc.contributor.authorSkottfelt, J.
dc.contributor.authorSouthworth, J.
dc.contributor.authorPeixinho, N.
dc.contributor.authorVerma, P.
dc.contributor.authorSbarufatti, B.
dc.contributor.authorKennea, J. A.
dc.contributor.authorGehrels, N.
dc.date.accessioned2025-01-23T21:28:26Z
dc.date.available2025-01-23T21:28:26Z
dc.date.issued2016
dc.description.abstractSimultaneous observations of microlensing events from multiple locations allow for the breaking of degeneracies between the physical properties of the lensing system, specifically by exploring different regions of the lens plane and by directly measuring the "microlens parallax." We report the discovery of a 30-65M(J) brown dwarf orbiting a K dwarf in the microlensing event OGLE-2015-BLG-1319. The system is located at a distance of similar to 5 kpc toward the Galactic Bulge. The event was observed by several ground-based groups as well as by Spitzer and Swift, allowing a measurement of the physical properties. However, the event is still subject to an eight-fold degeneracy, in particular the well-known close-wide degeneracy, and thus the projected separation between the two lens components is either similar to 0.25 au or similar to 45 au. This is the first microlensing event observed by Swift, with the UVOT camera. We study the region of microlensing parameter space to which Swift is sensitive, finding that though Swift could not measure the microlens parallax with respect to ground-based observations for this event, it can be important for other events. Specifically, it is important for detecting nearby brown dwarfs and free-floating planets in high magnification events.
dc.fuente.origenWOS
dc.identifier.doi10.3847/0004-637X/831/2/183
dc.identifier.eissn1538-4357
dc.identifier.issn0004-637X
dc.identifier.urihttps://doi.org/10.3847/0004-637X/831/2/183
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/101408
dc.identifier.wosidWOS:000400474400003
dc.issue.numero2
dc.language.isoen
dc.revistaAstrophysical journal
dc.rightsacceso restringido
dc.subjectbinaries: general
dc.subjectbrown dwarfs
dc.subjectGalaxy: bulge
dc.subjectgravitational lensing: micro
dc.subject.ods13 Climate Action
dc.subject.odspa13 Acción por el clima
dc.titleTHE FIRST SIMULTANEOUS MICROLENSING OBSERVATIONS BY TWO SPACE TELESCOPES: <i>SPITZER</i> AND <i>SWIFT</i> REVEAL A BROWN DWARF IN EVENT OGLE-2015-BLG-1319
dc.typeartículo
dc.volumen831
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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