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J/MNRAS/390/1733  CN column densities and excitation temperatures  (Slyk+, 2008)

CN column densities and excitation temperatures. Slyk K., Bondar A.V., Galazutdinov G.A., Krelowski J. <Mon. Not. R. Astron. Soc., 390, 1733-1750 (2008)> =2008MNRAS.390.1733S
ADC_Keywords: Stars, nearby ; Spectroscopy ; Equivalent widths Keywords: ISM: clouds - ISM: molecules Abstract: We analyse abundances and rotational temperatures of the interstellar CN molecule. We have calculated the column densities and excitation temperatures of the molecule along 73 lines of sight basing on our original measurements of the B2{SIGMA}+-X2{SIGMA}+(0,0) vibrational band recorded in high signal-to-noise ratio spectra and also for 88 directions based on measurements already available in literature. We compare the column densities obtained from different bands of CN molecule available to ground-based instruments. The obtained excitation temperatures in the analysed directions show always an excess over the cosmic microwave background radiation (CMBR) temperature. Description: The spectra, analysed in this project, were acquired using several instruments. * (i) FEROS echelle spectrograph fed with the 2.2-m telescope at ESO La Silla which allows resolution R=48000. (34 spectra) * (ii) UVES instrument attached to the ESO VLT Kueyen telescope (R=80000) available from the UVES Paranal Observatory Project - a public library of high-resolution stellar spectra (Bagnulo et al. 2003, The ESO Messenger, 114, 10), and the ESO archive. (21 spectra) * (iii) BOES - the echelle spectrograph installed at the 1.8-m telescope of Bohyunsan Optical Astronomy Observatory in South Korea working with three possible resolutions: R=30000, 45000 and 90000. (11 spectra) * (iv) MAESTRO - the coude echelle spectrometer fed by the 2-m telescope of the Observatory at the Peak Terskol (Northern Caucasus), with the resolution R=120000. (seven spectra) * (v) HARPS spectrograph attached to the ESO La Silla 3.6-m telescope, a fibre-fed high-resolution echelle spectrograph R=115000. (seven spectra) * (vi) Gecko spectrograph on the 3.6-m Canada-France-Hawaii Telescope (CFHT) (R=120000). (six spectra) File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 39 73 The list of observed stars table2.dat 102 93 Equivalent width measurements of CN B-X (0,0) band and CH 3886 and 4300 lines for observed stars table3.dat 102 87 *Literature data of equivalent width measurements of CN B-X (0,0) band and CH 3886 and 4300 lines table5.dat 117 101 *CN column densities and excitation temperatures for observed stars table6.dat 117 88 *CN column densities and excitation temperatures based on the measurements from the literature refs.dat 73 18 References
Note on table5.dat: HD 151962 corrected into HD 151932. Note on table3.dat, table6.dat: the four star names starting by CD corrected into CP (actually CPD star identifiers, not CD)
Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 10 A10 --- Star Star name 12- 22 A11 --- SpType MK spectral type 24- 28 F5.2 mag vmag Visual apparent magnitude 30- 33 F4.2 mag E(B-V) ? B-V colour excess 35- 39 A5 --- Sp Spectrograph used (G1)
Byte-by-byte Description of file: table[23].dat
Bytes Format Units Label Explanations
1- 10 A10 --- Star Star name 12 I1 --- f_Star ? Observation number 13 A1 --- n_Star [i] i for the "directions for which we have our original measurements" 14 A1 --- Sp Spectrograph (G1) 15 A1 --- l_EWR1 Limit flag on EWR1 16- 21 F6.3 0.1pm EWR1 ?=- R(1) equivalent width 23- 27 F5.3 0.1pm e_EWR1 ?=- rms uncertainty on R1 29 A1 --- l_EWR0 Limit flag on EWR0 30- 35 F6.3 0.1pm EWR0 ?=- R(0) equivalent width 37- 41 F5.3 0.1pm e_EWR0 ?=- rms uncertainty on R0 43- 44 A2 --- l_EWP1 [≤ ] Limit flag on EWP1 45- 50 F6.3 0.1pm EWP1 ?=- P(1) equivalent width 52- 56 F5.3 0.1pm e_EWP1 ?=- rms uncertainty on P1 58- 62 F5.2 0.1pm EWCH3886 ?=- CH3886 equivalent width 64- 66 F3.1 0.1pm e_EWCH3886 ?=- rms uncertainty on CH3886 68- 72 F5.2 0.1pm EWCH4300 ?=- CH4300 equivalent width 73- 76 F4.1 0.1pm e_EWCH4300 ?=- rms uncertainty on CH4300 79- 82 F4.2 km/s b(CH) ?=- b parameter of CH lines 84- 89 F6.2 10+12cm-2 N(CH) ?=- Lower limit of CH column density obtained from CH 3886 line 90 A1 --- l_N(CN)tot Limit flag on N(CN)tot 91- 96 F6.2 10+12cm-2 N(CN)tot ? Total CN column density (table3 only) 98-102 A5 --- Ref References for table3, in refs.dat file
Byte-by-byte Description of file: table[56].dat
Bytes Format Units Label Explanations
1- 10 A10 --- Star Star name 11 A1 --- Sp Spectrograph (G1) 13 I1 --- f_Star ? Observation number 15- 18 F4.2 --- DR ?=- Doublet ratio 20- 25 F6.3 km/s bDR ?=- Doppler broadening parameter b from doublet ratio method 26 A1 --- r_bDR Reference for bDR (1) 28- 31 F4.2 km/s b ?=- Doppler broadening parameter b from rescaling the CH b parameter 33- 37 F5.2 10+12cm-2 NR1DR ?=- Column density of the upper state of CN 38 A1 --- n_NR1DR [b] b for Final value 39- 45 F7.2 10+12cm-2 NR0DR ?=- Column density of the lower state of CN 46 A1 --- n_NR0DR [b] b for Final value 47 A1 --- f_NR0DR [i] i for infinity 48- 52 F5.2 K TDR ?=- Excitation temperature from doublet ratio method 53 A1 --- n_TDR [b] b for Final value 54- 58 F5.2 10+12cm-2 NR1CH ?=- Column density of the upper state of CN 59 A1 --- n_NR1CH [b] b for Final value 60- 65 F6.2 10+12cm-2 NR0CH ?=- Column density of the lower state of CN 66 A1 --- n_NR0CH [b] b for Final value 67- 70 F4.2 K TCH ?=- Excitation temperature from rescaling CH b parameter 71 A1 --- n_TCH [b] b for Final value 72- 76 F5.2 10+12cm-2 NR1b=1 ?=- Column density of the upper state of CN for b=1km/s 77 A1 --- n_NR1b=1 [b] b for Final value 78 A1 --- f_NR1b=1 [i] i for infinity 79- 84 F6.2 10+12cm-2 NR0b=1 ?=- Column density of the lower state of CN for b=1km/s 85 A1 --- n_NR0b=1 [b] b for Final value 86 A1 --- f_NR0b=1 [ic] i=infinity, c=from CN A-X (2,0) band 89- 92 F4.2 K Tb=1 ?=- Excitation temperature of CN for b=1km/s 93 A1 --- n_Tb=1 [b] b for Final value 95- 99 F5.2 10+12cm-2 NR1b=inf ?=- Column density of the upper state of CN in the limit of unsaturated lines for line R1 101-105 F5.2 10+12cm-2 NR0b=inf ?=- Column density of the lower state of CN in the limit of unsaturated lines for line R0 107-112 F6.3 10+12cm-2 NP1b=inf ?=- Column density of the lower state of CN in the limit of unsaturated lines for line P1 114-117 F4.2 K Tb=inf ?=- Excitation temperature in the limit of unsaturated lines
Note (1): b values adopted from the following references: a = Meyer & Jura (1985ApJ...297..119M) b = Roth & Meyer (1995ApJ...441..129R) c = Federman & Lambert (1988ApJ...328..777F) d = Crutcher (1985ApJ...288..604C) e = Pan et al. (2004ApJS..151..313P) f = Palazzi et al. (1992ApJ...398...53P)
Byte-by-byte Description of file: refs.dat
Bytes Format Units Label Explanations
1- 2 I2 --- Ref Reference number 4- 22 A19 --- BibCode BibCode resuming the reference 24- 51 A28 --- Aut Author's name 53- 73 A21 --- Com Comment
Global notes: Note (G1): Spectrograph flag as follows: m = MAESTRO b = BOES g = Gecko f = FEROS u = UVES h = HARPS
History: * 17-May-2010: From electronic version of the journal * 26-Jul-2010: CD identifiers from tables 3 and 6 corrected into CP (actually CPD identifiers)
(End) Patricia Vannier, Francois Ochsenbein [CDS] 17-May-2010
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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