J/A+A/692/A54 Confused NRT HI spectra (Gerard+, 2024)
H I line observations of 290 evolved stars made with the Nancay Radio Telescope.
I. Data.
Gerard E., van Driel W., Matthews L.D., Le Bertre T., Martin J.-M.,
Rieu N.Q.
<Astron. Astrophys. 692, A54 (2024)>
=2024A&A...692A..54G 2024A&A...692A..54G (SIMBAD/NED BibCode)
ADC_Keywords: Stars, giant ; Radio lines
Keywords: stars: AGB and post-AGB - circumstellar matter -
stars: winds, outflows - radio lines: stars
Abstract:
We present a compendium of HI 21-cm line observations of
circumstellar envelopes (CSEs) of 290 evolved stars, mostly (∼84%) on
the asymptotic giant branch (AGB), made with the 100 m-class,
single-dish Nancay Radio Telescope. The observational and data
reduction procedures were optimised to separate genuine CSE HI
emission from surrounding Galactic line features. For most targets
(254), the results have not been previously published. Clear
detections were made of 34 objects, for 33 of which the total HI flux
and the size of the CSE could be determined. Possible detections were
made of 21 objects, and upper limits could be determined for 95
undetected targets, while for 140 objects confusion from Galactic HI
emission along the line of sight precluded meaningful upper limits.
The collective results of this survey can provide guidance on the
detectability of circumstellar HI gas for future mapping and imaging
studies.
Description:
List of stars whose CSE spectra are completely obscured by Galactic
lines.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table6.dat 112 140 Confused NRT HI spectra
refs.dat 143 82 References
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Byte-by-byte Description of file: table6.dat
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Bytes Format Units Label Explanations
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1- 13 A13 --- Name Name
14- 16 A3 --- n_Name [nd*, ] Note, not explained in the paper
18- 19 I2 h RAh Right ascension (J2000)
21- 22 I2 min RAm Right ascension (J2000)
24- 27 F4.1 s RAs Right ascension (J2000)
29 A1 --- DE- Declination sign (J2000)
30- 31 I2 deg DEd Declination (J2000)
33- 34 I2 arcmin DEm Declination (J2000)
36- 37 I2 arcsec DEs Declination (J2000)
39- 51 A13 --- Type Type
53- 64 A12 --- SpType Spectral type
66- 71 A6 --- r_SpType Spectral type reference, in refs.dat file
73- 77 F5.1 km/s VLSR ? LSR velocity
79- 82 A4 --- r_VLSR LSR velocity reference, in refs.dat file
84- 86 A3 --- Line Line
88- 95 A8 --- Notes Notes
97-112 A16 --- HIrefs HI references, in refs.dat file
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Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
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1- 6 A6 --- Ref Reference code
8- 26 A19 --- BibCode BibCode
28- 59 A32 --- Aur Author's name
61-143 A83 --- Com Comments
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 15-Apr-2025