J/A+A/606/A125 HD163296 DCO+, DCN and N2D+ data cubes (Salinas+, 2017)
DCO+, DCN, and N2D+ reveal three different deuteration regimes in the disk
around the Herbig Ae star HD163296.
Salinas V.N., Hogerheijde M.R., Mathews G.S., Oberg K.I., Qi C.,
Williams J.P., Wilner D.J.
<Astron. Astrophys. 606, A125 (2017)>
=2017A&A...606A.125S 2017A&A...606A.125S (SIMBAD/NED BibCode)
ADC_Keywords: Stars, variable ; Stars, pre-main sequence ;
Photometry, millimetric/submm
Keywords: astrochemistry - protoplanetary disks - stars: individual: HD 163296 -
submillimeter: stars
Abstract:
Deuterium fractionation has been used to study the thermal history of
prestellar environments. Their formation pathways trace different
regions of the disk and may shed light into the physical structure of
the disk, including locations of important features for planetary
formation.
We aim to constrain the radial extent of the main deuterated species;
we are particularly interested in spatially characterizing the high
and low temperature pathways for enhancing deuteration of these
species.
We observed the disk surrounding the Herbig Ae star HD 163296 using
ALMA in Band 6 and obtained resolved spectral imaging data of DCO+
(J=3-2), DCN (J=3-2) and N2D+ (J=3-2) with synthesized beam sizes
of 0.53"x0.42", 0.53"x0.42", and 0.50"x0.39", respectively.
We adopted a physical model of the disk from the literature and use
the 3D radiative transfer code LIME to estimate an excitation
temperature profile for our detected lines. We modeled the radial
emission profiles of DCO+, DCN, and N2D+, assuming their
emission is optically thin, using a parametric model of their
abundances and our excitation temperature estimates.
Description:
Reduced data cubes (in FITS format) of ALMA observations of
DCO+ (J=3-2), N2D+(J=3-2) and DCN(J=3-2) (project
2013.1.01268.S).
Objects:
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RA (2000) DE Designation(s)
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17 56 21.29 -21 57 21.9 HD 163296 = HIP 87819
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
list.dat 183 3 List of fits data cubes
fits/* . 3 Individual data cubes
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Byte-by-byte Description of file: list.dat
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Bytes Format Units Label Explanations
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1- 9 F9.5 deg RAdeg Right Ascension of center (J2000)
10- 18 F9.5 deg DEdeg Declination of center (J2000)
20- 22 I3 --- Nx Number of pixels along X-axis
24- 26 I3 --- Ny Number of pixels along Y-axis
28- 30 I3 --- Nz Number of slices
32- 53 A22 --- Obs.Date Observation date (YYYY-MM-DDThh:mm:ss.ss)
55- 61 F7.3 GHz bFreq Lower value of frequency interval
63- 69 F7.3 GHz BFreq Upper value of frequency interval
71- 77 F7.1 Hz dFreq Frequency resolution
79- 84 I6 Kibyte size Size of FITS file
86-143 A58 --- FileName Name of FITS file, in subdirectory fits
145-183 A39 --- Title Title of the FITS file
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Acknowledgements:
Vachail N. Salinas, salinas(at)strw.leidenuniv.nl
(End) Vachail Salinas [Leiden Sterrwacht], Patricia Vannier [CDS] 20-Jul-2017