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J/A+A/510/A54      NaI and CaII interstellar absorption    (Welsh+, 2010)

New 3-D density maps of NaI and CaII interstellar absorption within 300pc. Welsh B.Y., Lallement R., Vergely J.-L., Raimond S. <Astron. Astrophys. 510, A54 (2010)> =2010A&A...510A..54W
ADC_Keywords: Stars, nearby ; Abundances ; Interstellar medium Keywords: solar neighborhood - ISM: atoms - ISM: clouds Abstract: We present new high resolution (R>50000) absorption measurements of the NaI doublet (5889-5895Å) along 482 nearby sight-lines, in addition to 807 new measurements of the CaII K (3933Å) absorption line. We have combined these new data with previously reported measurements to produce a catalog of absorptions towards a total of 1857 early-type stars located within 800pc of the Sun. Using these data we have determined the approximate 3-dimensional spatial distribution of neutral and partly ionized interstellar gas density within a distance-cube of 300pc from the Sun. Description: All newly recorded spectra were analyzed by means of a multi-component line profile-fitting program, in most cases using simultaneous fits to the line doublets. Normalized absorption profiles were fitted by varying the velocity, doppler width and column density for all intervening interstellar clouds. The resulting total column densities were then used in conjunction with the Hipparcos distances of the target stars to construct inversion maps of the 3D spatial density distribution of the NaI and CaII bearing gas. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 96 1851 NaI and CaII absorption measurements refs.dat 150 104 References
See also: J/ApJS/147/61 : Interstellar Ca I absorption (Welty+, 2003) J/A+A/441/181 : Interstellar 12C/13C ratios (Casassus+, 2005) J/ApJ/652/1230 : H2CO absorption toward Galactic anticenter (Rodriguez+ 2006) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 10 A10 --- Name HD or HIP number of the observed star 12- 16 F5.1 deg GLON Galactic longitude of star 18- 22 F5.1 deg GLAT Galactic latitude of star 24 A1 --- l_Dist Limit glag on Dist 25- 27 I3 pc Dist ? Distance to star 29 A1 --- l_EWD1 Limit flag on EWD1 30- 35 F6.2 0.1pm EWD1 ? Equivalent width of the NaI D1 line 37 A1 --- l_EWD2 Limit flag on EWD2 38- 43 F6.2 0.1pm EWD2 ? Equivalent width of the NaI D2 line 45 A1 --- l_N(NaI) Limit flag on log[N(NaI)] 46- 50 F5.2 [cm-2] N(NaI) ? Log of total NaI column density 52- 61 A10 --- n_N(NaI) Observatory (with date) where new data was taken 63- 65 I3 --- r_N(NaI) ? Published reference for NaI data 67 A1 --- l_EWCaII Limit flag on EWCaII 68- 73 F6.2 0.1pm EWCaII ? Equivalent width of the CaII K-line 75 A1 --- l_N(CaII) Limit flag on log[N(CaII)] 76- 80 F5.2 [cm-2] N(CaII) ? Log of total CaII column density 82- 93 A12 --- n_N(CaII) Observatory (with date) where new data was taken 94- 96 I3 --- r_N(CaII) ? Published reference for CaII data
Byte-by-byte Description of file: refs.dat
Bytes Format Units Label Explanations
1- 3 I3 --- Ref Reference code 5- 23 A19 --- BibCode BibCode 25- 43 A19 --- Aut Author's name 44-150 A107 --- Com Comments
Acknowledgements: Barry Welsh, bwelsh(at) History: * 11-Feb-2010: on-line version * 23-Jun-2015: units corrected into 0.1pm (instead of 0.1nm)
(End) Patricia Vannier [CDS] 15-Dec-2009
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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