J/A+A/646/A74 Distance of HiGAL sources (Mege+, 2021)
Distance of HiGAL sources.
Mege P., Russeil D., Zavagno A., Elia D., Molinari S., Brunt C.M.,
Butora R., Cambresy L., Di Giorgio A.M., Fenouillet T., Fukui Y.,
Lambert J.C., Makai Z., Merello M., Meunier J.C., Molinaro M., Moreau C.,
Pezzuto S., Poulin Y., Schisano E., Schuller F.
<Astron. Astrophys. 646, A74 (2021)>
=2021A&A...646A..74M 2021A&A...646A..74M (SIMBAD/NED BibCode)
ADC_Keywords: Milky Way; Molecular clouds; Stars, distances; Radial velocities
Keywords: stars: distances - catalogs
Abstract:
Distances are key to determine the physical properties of sources.
In the Galaxy, large (>10000) homogeneous samples of sources for which
distance are available, covering the whole galactic distance range,
are still missing. Here we present a catalog of velocity and distance
for a large sample (>100000) of Hi-GAL compact sources.
We develop a fully automatic Python-package to extract the velocity
and determine the distance. To assign a velocity to a Hi-GAL compact
source, the code uses all the available spectroscopic data
complemented by a morphological analysis. Once the velocity is
determined, if no stellar or maser parallax distance is known, the
kinematic distance is calculated and the distance ambiguity (for
sources located inner the Solar circle) is solved with the HII
self-absorption method or from distance-extinction data.
Among the 150223 compact sources of the Hi-GAL catalog, we obtained a
distance for for 124069 sources for the 5-sigma catalog (and 128351
sources for the 3-sigma catalog), where sigma represents the noise
level of each molecular spectrum used for the lines detection made at
5-sigma and 3-sigma, to produce the respective catalog.
Description:
Velocity and Distance of HiGAL sources.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tablee1.dat 278 150223 5_sigma catalogue
tablee1b.dat 278 150223 3_sigma catalogue
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See also:
J/MNRAS/471/100 : Hi-GAL compact source catalog. -71.0<l<67.0 (Elia+, 2017)
Byte-by-byte Description of file: tablee1.dat tablee1b.dat
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Bytes Format Units Label Explanations
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1- 22 A22 --- Source Hi-GAL source identification
(HIGALBMLLL.llll+B.bbbb)
24- 31 F8.4 deg RAdeg Right Ascension (J2000)
33- 40 E8.4 deg DEdeg Declination (J2000)
42- 49 F8.4 deg GLON Galactic longitude
51- 57 F7.4 deg GLAT Galactic Latitude
59- 67 F9.4 km/s VLSR ?=-999 Velocity (LSR)
69- 78 F10.4 km/s e_VLSR ?=99.9 Velocity uncertainty
80- 97 A18 --- Tracer Molecular Line used
99-109 F11.6 kpc Dist ?=-999 Adopted distance
111-117 E7.3 kpc e_Dist ?=-999 Distance uncertainty
119-129 A11 --- Status Distance determination method
131-134 F4.2 --- Proba Distance assigment probability
136-147 F12.6 kpc Dfar ?=-999 Far kinematic distance
149-156 E8.3 kpc E_Dfar []?=-999 Upper far distance uncertainty
158-166 E9.3 kpc e_Dfar []?=-999 Lower far distance uncertainty
168-179 F12.6 kpc Dnear ?=-999 Near kinematic distance
181-187 E7.3 kpc E_Dnear []?=-999 Upper near distance uncertainty
189-197 E9.3 kpc e_Dnear []?=-999 Lower near distance uncertainty
199-210 F12.6 kpc Rgal ?=-999 Galactocentric distance
212-217 F6.1 kpc Dist1 ?=-999 Distance for pair 1 (1)
219-223 F5.3 mag Aks1 ? Extinction Aks for pair 1 (1)
225-228 F4.1 kpc Dist2 ? Distance for pair 2 (1)
230-234 F5.3 mag Aks2 ? Extinction Aks for pair 2 (1)
236-239 F4.1 kpc Dist3 ? Distance for pair 3 (1)
241-245 F5.3 mag Aks3 ? Extinction Aks for pair 3 (1)
247-250 F4.1 kpc Dist4 ? Distance for pair 4 (1)
252-256 F5.3 mag Aks4 ? Extinction Aks for pair 4 (1)
258-261 F4.1 kpc Dist5 ? Distance for pair 5 (1)
263-267 F5.3 mag Aks5 ? Extinction Aks for pair 5 (1)
269-272 F4.1 kpc Dist6 ? Distance for pair 6 (1)
274-278 F5.3 mag Aks6 ? Extinction Aks for pair 6 (1)
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Note (1): Extinction information given as a list of pairs of distance (kpc)
and Aks (mag) locating the extinction steps detected along the line of sight.
The number of pairs varies from source to source.
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Acknowledgements:
Delphine Russeil, delphine.russeil(at)lam.fr
(End) Pierre Mege [LAM, France], Patricia Vannier [CDS] 02-Dec-2020