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J/ApJ/788/41        BVRI light curve of OGLE LMC-ECL-11893   (Dong+, 2014)

OGLE-LMC-ECL-11893: the discovery of a long-period eclipsing binary with a circumstellar disk. Dong S., Katz B., Prieto J.L., Udalski A., Kozlowski S., Street R.A., Bramich D.M., Tsapras Y., Hundertmark M., Snodgrass C., Horne K., Dominik M., Figuera Jaimes R. <Astrophys. J., 788, 41 (2014)> =2014ApJ...788...41D
ADC_Keywords: Binaries, eclipsing ; Stars, variable ; Photometry, CCD Keywords: binaries: eclipsing - circumstellar matter - stars: individual: (OGLE-LMC-ECL-11893) - stars: variables: T Tauri - Herbig Ae/Be Abstract: We report the serendipitous discovery of a disk-eclipse system OGLE-LMC-ECL-11893. The eclipse occurs with a period of 468 days, a duration of about 15 days, and a deep (up to ΔmI∼1.5), peculiar, and asymmetric profile. A possible origin of such an eclipse profile involves a circumstellar disk. The presence of the disk is confirmed by the H-alpha line profile from the follow-up spectroscopic observations, and the star is identified as Be/Ae type. Unlike the previously known disk-eclipse candidates, the eclipses of OGLE-LMC-ECL-11893 retain the same shape throughout the span of ∼17yr (13 orbital periods), indicating no measurable orbital precession of the disk. Description: Time-series B, V, R, and I photometry for OGLE-LMC-ECL-11893 from the LCOGT network of telescopes. Objects: -------------------------------------------------------------------- RA (2000) DE Designation(s) -------------------------------------------------------------------- 05 17 21.17 -69 00 55.7 OGLE LMC-ECL-11893 = OGLE LMC-ECL-11893 -------------------------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 84 298 CCD time-series B, V, R, and I photometry for OGLE-LMC-ECL-11893 from the LCOGT (Las Cumbres Observatory Global Telescope Network, CA)
See also: J/AcA/61/103 : VI light curves of LMC eclipsing binaries (Szymanski+, 2011) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 20 A20 --- TelName LCOGT site/dome/telescope/instrument code 22 A1 --- Flt [BVRI] Observation filter 24- 36 F13.5 d HJD [2456343/2456373] Heliocentric Julian date at mid-exposure 38- 43 F6.3 mag mag Instrumental magnitude in Flt filter 45- 49 F5.3 mag e_mag Magnitude uncertainty 51- 56 F6.3 s-1 Fref Reference flux (in ADU/s unit) 58- 62 F5.3 s-1 e_Fref Reference flux uncertainty (in ADU/s unit) 64- 71 F8.3 s-1 DFlux Difference flux (in ADU/s unit) 73- 77 F5.3 s-1 e_DFlux Difference flux uncertainty (in ADU/s unit) 79- 84 F6.4 --- p Photometric scale factor
Acknowledgements: Daniel Bramich, dan.bramich(at)
(End) Daniel Bramich [QEERI, Qatar], Patricia Vannier [CDS] 07-Jul-2014
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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