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J/A+A/532/A101      Lunar occultations of 184 stellar sources  (Richichi+, 2011)

Lunar occultations of 184 stellar sources in two crowded regions toward the Galactic Bulge. Richichi A., Chen W.P., Fors O., Wang P.F. <Astron. Astrophys., 532, A101 (2011)> =2011A&A...532A.101R
ADC_Keywords: Infrared sources ; Occultations Keywords: techniques: high angular resolution - occultations - binaries: general - stars: fundamental parameters - infrared: stars - circumstellar matter Abstract: Lunar occultations (LO) provide a unique combination of high angular resolution and sensitivity at near-infrared wavelengths. At the ESO Very Large Telescope, it is possible to achieve about 1 milliarcsecond (mas) resolution and detect sources as faint as K∼12mag. We have taken advantage of a passage of the Moon over two crowded and reddened regions in the direction of the inner part of the Galactic bulge to obtain a high number of occultation light curves over two half nights. Our goal was to detect and characterize new binary systems, and to investigate highly extincted and relatively unknown infrared sources in search of circumstellar shells and similar peculiarities. Our target list included a significant number of very late-type stars, but the majority of the sources was without spectral classification. Description: Following the strategy of maximum return for minimum observing time, we observed the passage of the Moon over two crowded regions rich in near-infrared sources during the two first half nights of September 25 and 26, 2009. As in the previous papers we used ISAAC, this time at the Melipal telescope (UT3). File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 89 184 List of the recorded occultation events table3.dat 92 30 Summary of results
See also: I/123 : Lunar Occultations of IRAS Point Sources: 1986-1990 I/142 : Lunar Occultations of IRAS Point Sources: 1991-2000 VI/132 : Lunar Occultation Archive (Herald+ 2010) J/A+AS/80/215 : Lunar occultations of weak radio sources (Akujor+, 1989) J/A+AS/110/107 : Lunar occultations (Meyer+ 1995) J/AJ/112/2786 : 1985-1995 lunar occultations at TIRGO (Richichi+ 1996) J/A+A/522/A65 : Lunar occultations at the ESO VLT (Richichi+, 2010) Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 16 A16 --- 2MASS 2MASS name (HHMMSSss+DDMMSSs, Cat. II/246) 18- 27 A10 "DD-MM-YYYY" Observation date 29- 36 A8 "h:m:s" Obs.time UT time of observation 38- 42 F5.2 mag Jmag ?=- 2MASS J magnitude 44- 48 F5.2 mag Hmag ?=- 2MASS H magnitude 50- 54 F5.2 mag Kmag 2MASS Ks magnitude 56- 62 A7 --- SpType MK spectral type 64- 78 A15 --- OName Cross-Identification 80- 84 F5.1 --- SNR Signal-to-noise ratio 86- 89 F4.1 mag Klim Limiting K magnitude
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 16 A16 --- 2MASS 2MASS name (HHMMSSss+DDMMSSs) 18- 23 F6.4 m/ms V Fitted linear rate of the event value 25- 29 F5.1 % V/Vt-1 Deviation from the predicted rate Vt (V/Vt)-1 31- 35 F5.1 deg psi Local lunar limb slope ψ 37- 39 I3 deg PA Position angle 41- 43 I3 deg CA Contact angle 45- 49 F5.1 --- SNR Signal-to-noise ratio 51- 55 F5.1 mas Sep ?=- Projected separation for binary detections 57- 59 F3.1 mas e_Sep ?=- rms uncertainty on Sep 62- 67 F6.2 --- BR ?=- Brightness ratio 69- 73 F5.2 --- e_BR ?=- rms uncertainty on BR 75- 92 A18 --- Com Comments
History: From electronic version of the journal
(End) Patricia Vannier [CDS] 31-Oct-2011
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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