Spitzer Microlensing Program as a Probe for Globular Cluster Planets. Analysis of OGLE-2015-BLG-0448
Autor: | Poleski, R, Zhu, W, Christie, GW, Udalski, A, Gould, A, Bachelet, E, Skottfelt, J, Novati, SC, Szymanski, MK, Soszynski, I, Pietrzynski, G, Wyrzykowski, L, Ulaczyk, K, Pietrukowicz, P, Kozlowski, S, Skowron, J, Mroz, P, Pawlak, M, Beichman, C, Bryden, G, Carey, S, Fausnaugh, M, Gaudi, BS, Henderson, CB, Pogge, RW, Shvartzvald, Y, Wibking, B, Yee, JC, Beatty, TG, Eastman, JD, Drummond, J, Friedmann, M, Henderson, M, Johnson, JA, Kaspi, S, Maoz, D, McCormick, J, McCrady, N, Natusch, T, Ngan, H, Porritt, I, Relles, HM, Sliski, DH, Tan, T-G, Wittenmyer, RA, Wright, JT, Street, RA, Tsapras, Y, Bramich, DM, Horne, K, Snodgrass, C, Steele, IA, Menzies, J, Jaimes, RF, Wambsganss, J, Schmidt, R, Cassan, A, Ranc, C, Mao, S, Bozza, V, Dominik, M, Hundertmark, MPG, Jorgensen, UG, Andersen, MI, Burgdorf, MJ, Ciceri, S, D'Ago, G, Evans, DF, Gu, S-H, Hinse, TC, Kains, N, Kerins, E, Korhonen, H, Kuffmeier, M, Mancini, L, Popovas, A, Rabus, M, Rahvar, S, Rasmussen, RT, Scarpetta, G, Southworth, J, Surdej, J, Unda-Sanzana, E, Verma, P, von Essen, C, Wang, Y-B, Wertz, O, Grp, OGLE, Team, S, Grp, FUN, Project, R, Grp, M |
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Přispěvatelé: | University of St Andrews. School of Physics and Astronomy |
Jazyk: | angličtina |
Rok vydání: | 2015 |
Předmět: |
planets and satellites: detection
Proper motion detection [planets and satellites] NDAS GRAVITATIONAL LENSING EXPERIMENT FOS: Physical sciences Astrophysics gravitational lensing: micro Astrophysics::Cosmology and Extragalactic Astrophysics 010501 environmental sciences GALACTIC BULGE Gravitational microlensing 01 natural sciences Settore FIS/05 - Astronomia e Astrofisica proper motions Planet SYSTEMS 0103 physical sciences Cluster (physics) QB Astronomy PHOTOMETRY Astrophysics::Solar and Stellar Astrophysics 010303 astronomy & astrophysics Solar and Stellar Astrophysics (astro-ph.SR) Astrophysics::Galaxy Astrophysics QC 0105 earth and related environmental sciences QB Physics globular clusters: individual (NGC6558) RR LYRAE STARS MILKY-WAY BULGE Astronomy and Astrophysics Radius Light curve OGLE-III DIFFERENCE IMAGE-ANALYSIS CATALOG Space and Planetary Science Photometry (astronomy) RED CLUMP QC Physics Astrophysics - Solar and Stellar Astrophysics Globular cluster individual (NGC6558) [globular clusters] micro [gravitational lensing] individual: NGC6558 [Globular clusters] Astrophysics::Earth and Planetary Astrophysics |
Zdroj: | NASA Astrophysics Data System Poleski, R, Zhu, W, Christie, G W, Udalski, A, Gould, A, Bachelet, E, Skottfelt, J F, Novati, S C, Szymanski, M K, Soszynski, I, Pietrzynski, G, Wyrzykowski, L, Ulaczyk, K, Pietrukowicz, P, Kozlowski, S, Skowron, J, Mróz, P, Pawlak, M, Beichman, C, Bryden, G, Carey, S, Fausnaugh, M, Gaudi, B S, Henderson, C B, Pogge, R W, Shvartzvald, Y, Wibking, B, Yee, J C, Beatty, T G, Eastman, J D, Drummond, J, Friedmann, M, Henderson, M, Johnson, J A, Kaspi, S, Maoz, D, McCormick, J, McCrady, N, Natusch, T, Ngan, H, Porritt, I, Relles, H M, Sliski, D H, Tan, T-G, Wittenmyer, R A, Wright, J T, Street, R A, Tsapras, Y, Rasmussen, R T, von Essen, C, OGLE GRP, SPITZER Team, FUN Grp, RoboNet Project & MINDSTEP GRP 2016, ' THE SPITZER MICROLENSING PROGRAM AS A PROBE FOR GLOBULAR CLUSTER PLANETS : ANALYSIS OF OGLE-2015-BLG-0448 ', Astrophysical Journal, vol. 823, no. 1, 63 . https://doi.org/10.3847/0004-637X/823/1/63 |
ISSN: | 0004-637X |
Popis: | The microlensing event OGLE-2015-BLG-0448 was observed by Spitzer and lay within the tidal radius of the globular cluster NGC 6558. The event had moderate magnification and was intensively observed, hence it had the potential to probe the distribution of planets in globular clusters. We measure the proper motion of NGC 6558 ($\mu_{\rm cl}$(N,E) = (+0.36+-0.10, +1.42+-0.10) mas/yr) as well as the source and show that the lens is not a cluster member. Even though this particular event does not probe the distribution of planets in globular clusters, other potential cluster lens events can be verified using our methodology. Additionally, we find that microlens parallax measured using OGLE photometry is consistent with the value found based on the light curve displacement between Earth and Spitzer. Comment: ApJ submitted, 12 pages, 8 figures, 2 tabels |
Databáze: | OpenAIRE |
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