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
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
Externí odkaz: