J/ApJS/147/61 Interstellar Ca I absorption (Welty+, 2003)
High-resolution observations of interstellar Ca I absorption.
Implications for depletions and electron densities in diffuse clouds.
Welty D.E., Hobbs L.M., Morton D.C.
<Astrophys. J. Suppl. Ser. 147, 61 (2003)>
=2003ApJS..147...61W 2003ApJS..147...61W
ADC_Keywords: Interstellar medium ; Spectroscopy
Keywords: ISM: abundances - ISM: atoms - ISM: kinematics and dynamics -
line: profiles
Abstract:
We present high-resolution (FWHM∼0.3-1.5km/s) spectra, obtained with
the AAT UHRF, the McDonald Observatory 2.7m coude spectrograph, and/or
the KPNO coude feed, of interstellar Ca I absorption toward 30
Galactic stars. Comparisons of the column densities of Ca I, Ca II,
K I, and other species - for individual components identified in the
line profiles and also when integrated over entire lines of sight -
yield information on relative electron densities and depletions
(dependent on assumptions regarding the ionization equilibrium).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table9.dat 72 135 Column Densities for Ca I, Ca II, Fe I, and S I
refs.dat 86 49 References
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See also:
http://astro.uchicago.edu/home/web/welty/coldens.html :
Catalogue of Interstellar Column Densities (Galactic)
Byte-by-byte Description of file: table9.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- HD ? HD number
8- 22 A15 --- Name Name
23 A1 --- WH [*] *: sight lines included in the Appendix
to Welty & Hobbs (2001ApJS..133..345W 2001ApJS..133..345W)
25 A1 --- l_CaI Limit flag on CaI
26- 30 F5.2 10+8cm-2 CaI CaI column density
31 A1 --- u_CaI Uncertainty flag on CaI
33- 35 I3 --- r_CaI Reference for CaI, in refs.dat file
37 A1 --- l_CaII Limit flag on CaII
38- 42 F5.2 10+8cm-2 CaII ? CaII column density
44- 46 I3 --- r_CaII ? Reference for CaII, in refs.dat file
48 A1 --- l_FeI Limit flag on FeI
49- 53 F5.2 10+8cm-2 FeI ? FeI column density
54 A1 --- u_FeI Uncertainty flag on FeI
56- 58 I3 --- r_FeI ? Reference for FeI, in refs.dat file
60 A1 --- l_SI Limit flag on SI
61- 65 F5.2 10+8cm-2 SI ? SI column density
66 A1 --- u_SI Uncertainty flag on SI
68- 70 I3 --- r_SI ? Reference for SI, 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- 3 I3 --- Ref Reference number
5- 23 A19 --- BibCode BibCode
25- 47 A23 --- Aut Author's name
51- 85 A35 --- Com Comments
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History:
From electronic version of the journal
(End) James Marcout, Patricia Bauer [CDS] 31-Jul-2003