AGAPEROS: searching for microlensing in the LMC with the pixel method. I. Data treatment and pixel light curves production

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Publication Type Journal Article
School or College College of Science
Department Physics
Creator Gondolo, Paolo
Other Author Melchior, A. L.; Afonso, C.; Ansari, R.; Aubourt, E.; Baillon, P.; Bareyre, P.; Bauer, F.; Beaulieu, J.-Ph.; Bouquet, A.; Brehin, S.; Cavalier, F.; Char, S.; Couchot, F.; Coutures, C.; Ferlet, R.; Fernandez, J.; Gaucherel, C.; Giraud-Heraud, Y.; Glicenstein, J.-F.; Goldman, B.; Gros, M.; Guibert, J.; Hardin, D.; Kaplan, J.; de Kat, J.; Lachieze-Rey, M.; Laurent, B.; Lesquoy, E.; Magneville, Ch.; Mansoux, B.; Marquette, J.-B.; Maurice, E.; Milsztajn, A.; Moniez, M.; Moreau, O.; Moscoso, L.; Palanque-Delabrouille, N.; Perdereau, O.; Prevot, L.; Renault, C.; Queinnec, F.; Rich, J.; Spiro, M.; Vidal-Madjar, A.; Vigroux, L.; Zylberajch, S.
Title AGAPEROS: searching for microlensing in the LMC with the pixel method. I. Data treatment and pixel light curves production
Date 1999
Description Recent surveys monitoring millions of light curves of resolved stars in the LMC have discovered several microlensing events. Unresolved stars could however signi _x000C_cantly contribute to the microlensing rate towards the LMC. Monitoring pixels, as opposed to individual stars, should be able to detect stellar variability as a variation of the pixel flux. We present a _x000C_rst application of this new type of analysis (Pixel Method) to the LMC Bar. We describe the complete procedure applied to the EROS 91-92 data (one tenth of the existing CCD data set) in order to monitor pixel fluxes. First, geometric and photometric alignments are applied to each image. Averaging the images of each night reduces signi_x000C_cantly the noise level. Second, one light curve for each of the 2:1 106 pixels is built and pixels are lumped into 3.6"x 3.6" superpixels, one for each elementary pixel.
Type Text
Publisher EDP Sciences
First Page 377
Last Page 391
Subject Data analysis techniques; Halo; Galaxies; Gravitational lensing; Pixel method; Large Magellanic Cloud; LMC
Subject LCSH Astronomical photometry; Dark matter (Astronomy); Magellanic Clouds; Microlensing (Astrophysics)
Language eng
Bibliographic Citation Melchior, A. L., Afonso, C., Ansari, R., Aubourt, E., Baillon, P., Bareyre, P., Bauer, F., Beaulieu, J.-Ph., Bouquet, A., Brehin, S., Cavalier, F., Char, S., Couchot, F., Coutures, C., Ferlet, R., Fernandez, J., Gaucherel, C., Giraud-Heraud, Y., Glicenstein, J.-F., Goldman, B., Gondolo, P., Gros, M., Guibert, J., Hardin, D., Kaplan, J., de Kat, J., Lachieze-Rey, M., Laurent, B., Lesquoy, E., Magneville, Ch., Mansoux, B., Marquette, J.-B., Maurice, E., Milsztajn, A., Moniez, M.; Moreau, O., Moscoso, L., Palanque-Delabrouille, N., Perdereau, O., Prevot, L., Renault, C., Queinnec, F., Rich, J., Spiro, M., Vidal-Madjar, A., Vigroux, L., & Zylberajch, S. (1999). AGAPEROS: searching for microlensing in the LMC with the pixel method. I. Data treatment and pixel light curves production. Astronomy and Astrophysics Supplement Series, 134, Jan., 377-91.
Rights Management (c)EDP Sciences http://publications.edpsciences.org/
Format Medium application/pdf
Format Extent 1,790,540 bytes
Identifier ir-main,9241
ARK ark:/87278/s6805m7g
Setname ir_uspace
Date Created 2012-06-13
Date Modified 2021-05-06
ID 706953
Reference URL https://collections.lib.utah.edu/ark:/87278/s6805m7g
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