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J/A+A/597/A118      Bok globule BHR 160 radio lines spectra     (Haikala+, 2017)

The Bok globule BHR 160: structure and star formation. Haikala L.K., Reipurth B. <Astron. Astrophys. 597, A118 (2017)> =2017A&A...597A.118H (SIMBAD/NED BibCode)
ADC_Keywords: Interstellar medium ; Stars, pre-main sequence ; Radio lines ; Spectroscopy Keywords: stars: formation - stars: pre-main-sequence - ISM: individual: BHR160 - ISM: dust, extinction Abstract: BHR160 is a virtually unstudied cometary globule within the Sco OB4 association in Scorpius at a distance of 1600pc. It is part of a system of cometary clouds which face the luminous O star HD155806. BHR160 is special because it has an intense bright rim. We attempt to derive physical parameters for BHR160 and to understand its structure and the origin of its peculiar bright rim. BHR160 was mapped in the 12CO, 13CO and C18O (2-1) and (1-0) and CS (3-2) and (2-1) lines. These data, augmented with stellar photometry derived from the ESO VVV survey, were used to derive the mass and distribution of molecular material in BHR160 and its surroundings. Archival mid-infrared data from the WISE satellite was used to find IR excess stars in the globule and its neighbourhood. Description: Radio spectral lines in maps covering approximately 2' by 2' with 20" spacing and a tilt of 60 degrees of the Bok globule BHR160 are presented. The spectra were obtained at Swedish ESO Submillimetre Telescope (SEST) in 1999. The observed molecular lines were 12CO(1-0), 12CO(2-1), 13CO(1-0), 13CO (2-1), C18O(1-0), C18O(2-1), CS(2-1) and CS(3-2). The SEST 2 and 3mm SESIS and 1 and 3mm IRAM dual SIS SSB receivers and the high resolution 2000 channel AOS spectrometer (channel spacing 41.711kHz) were used. The spectrometer was split into two to observe both channels simultaneously. The observations were made in the frequency switch mode. The switch was 5MHz (the 3mm channels) and 15MHz (the 1 and 2mm channels). The calibration was obtained using the chopper wheel method. The temperature scale of the spectra is in Ta* units, i.e. corrected to outside of the atmosphere but not for beam coupling. The 12CO spectra have been processed to correct for the artefact produced by the frequency switching method by the atmospheric CO and the -5km/s component (12CO (1-0)) and the -5km/s velocity component (12CO(2-1). The spectra are presented in 9 binary table FITS files. Objects: ------------------------------------------------- RA (2000) DE Designation(s) ------------------------------------------------- 11 14 29 -60 53.1 BHR 60 = DCld 291.4-00.2 ------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file bhr160_1.dat 50 56 *12CO(1-0) spectra (118.258GHz) list bhr160_2.dat 50 56 12CO(1-0) spectra (118.258GHz) list, second order baseline subtracted after folding bhr160_3.dat 50 56 12CO(2-1) spectra (238.512GHz) list, second order baseline subtracted after folding bhr160_4.dat 50 72 13CO(1-0) spectra (118.189GHz) list, second order baseline subtracted after folding bhr160_5.dat 50 56 13CO(2-1) spectra (228.374GHz) list, second order baseline subtracted after folding bhr160_6.dat 50 49 C18O(1-0) spectra (112.770GHz) list, second order baseline subtracted after folding bhr160_7.dat 50 49 C18O(2-1) spectra (227.535GHz) list, second order baseline subtracted after folding bhr160_8.dat 50 56 CS(2-1) spectra (100.970GHz) list, second order baseline subtracted after folding bhr160_9.dat 50 72 CS(3-2) spectra (154.952GHz) list, second order baseline subtracted after folding fits/* 0 9 FITS files with spectra
Note on bhr160_1.dat: second order baseline *but no folding*. The -5km/s component (C1 component) is visible. It will be corrupted when folding the spectra.
Byte-by-byte Description of file: bhr160_?.dat
Bytes Format Units Label Explanations
1- 6 I6 --- Scan Scan number 9- 19 E11.7 Hz ImgFreq Image frequency 21- 28 F8.4 km.s DV Delta V 30- 37 F8.2 d JD Julian date (JD-2400000) or MJD 39- 50 A12 --- FileName Name of the file with fits spectra in subdirectory fits
Acknowledgements: Lauri Haikala, lkhaikala(at)gmail.com
(End) Lauri Haikala [Univ. Atacama], Patricia Vannier [CDS] 24-Nov-2016
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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