Access to Astronomical Catalogues

← Click to display the menu
J/A+A/605/A99          UBVRI images of Barnard 207                 (Togi+, 2017)

Dust properties of the cometary globule Barnard 207 (LDN1489). Togi A., Witt A.N., St John D. <Astron. Astrophys. 605, A99 (2017)> =2017A&A...605A..99T (SIMBAD/NED BibCode)
ADC_Keywords: Bok globules; Globules; Molecular clouds; Photometry, UBVRI Keywords: dust,emission, extinction - ISM: molecules - ISM: general - ISM: individual objects: B207 Abstract: Barnard 207 (B207, LDN 1489, LBN 777), also known as the Vulture Head nebula, is a cometary globule in the Taurus-Auriga-Perseus Molecular Cloud region. B207 is known to host a Class I protostar, IRAS 04016+2610, located at a projected distance of ∼8400au from the dense core centre. Using imaging and photometry over a wide wavelength range, from UV to sub-mm, we study the physical properties of B207 and the dust grains contained within. The core density, temperature, and mass are typical of other globules found in the Milky Way interstellar medium (ISM). The increase in the dust albedo with increasing optical wavelengths, along with the detection of coreshine in the near infrared, indicates the presence of larger dust grains in B207. The measured optical, near-, mid- and far-infrared intensities are in agreement with the CMM+AMM and CMM+AMMI dust grain type of the THEMIS model, suggesting mantle formation on the dust grains throughout the globule. We investigate the possibility of turbulence being responsible for diffusing dust grains from the central core to external outer layers of B207. However, in situ formation of large dust grains cannot be excluded. Description: Reduced optical FITS file for B207. The images were obtained with the Large Monolithic Imager (LMI) instrument onboard the Discovery Channel Telescope (DCT). Objects: ------------------------------------------- RA (2000) DE Designation(s) ------------------------------------------- 04 04 47.5 +26 19 42 B207 = Barnard 207 ------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file list.dat 93 5 List of fits images fits/* 0 5 Individual fits images
Byte-by-byte Description of file: list.dat
Bytes Format Units Label Explanations
1- 9 F9.5 deg RAdeg Right Ascension of center (J2000) 10- 18 F9.5 deg DEdeg Declination of center (J2000) 20- 24 F5.3 arcsec/pix Scale Scale of the image 26- 29 I4 --- Nx Number of pixels along X-axis 31- 34 I4 --- Ny Number of pixels along Y-axis 36- 57 A22 --- Obs.Date Observatiob date (YYYY-MM-DDThh:mm:ss.ss) 59- 63 I5 Kibyte size Size of FITS file 65- 75 A11 --- FileName Name of FITS file, in subdirectory fits 77- 93 A17 --- Title Title of the FITS file
Acknowledgements: Aditya Togi, aditya.togi(at)utoledo.edu
(End) Patricia Vannier [CDS] 20-Jul-2017
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

catalogue service

© UDS/CNRS

Contact