J/MNRAS/368/253 Faint emission lines in M16, M20, NGC 3603 (Garcia-Rojas+, 2006)
Faint emission lines in the Galactic HII regions M16, M20 and NGC 3603.
Garcia-Rojas J., Esteban C., Peimbert M., Costado M.T., Rodriguez M.,
Peimbert A., Ruiz M.T.
<Mon. Not. R. Astron. Soc., 368, 253-279 (2006)>
=2006MNRAS.368..253G 2006MNRAS.368..253G
ADC_Keywords: H II regions ; Galaxies, spectra ; Spectrophotometry
Keywords: ISM: abundances - H II regions - ISM: individual: M16 -
ISM: individual: M20 - ISM: individual: NGC 3603
Abstract:
We present deep echelle spectrophotometry of the Galactic HII regions
M16, M20 and NGC 3603. The data have been taken with the Very Large
Telescope Ultraviolet-Visual Echelle Spectrograph in the
3100-10400Å range. We have detected more than 200 emission lines in
each region. Physical conditions have been derived using different
continuum and line intensity ratios. We have derived He+, C++ and
O++ abundances from pure recombination lines as well as
collisionally excited lines (CELs) for a large number of ions of
different elements.
Description:
The observations were made on 2003 March 29, 30 and 31 with UVES, at
the VLT Kueyen Telescope in Cerro Paranal Observatory (Chile). We used
the standard settings in both the red and blue arms of the
spectrograph, covering the spectral region from 3100 to 10400Å.
Objects:
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RA (2000) DE Designation(s)
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18 18 48. -13 49 00 M 16 = NGC 6611
18 02 23.0 -23 01 48 M 20 = NGC 6514
11 15 09.1 -61 16 17 NGC 3603 = Cl VDBH 115
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 76 754 Observed and reddening-corrected relative line
fluxes F(Lambda) and I(Lambda), respectively.
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See also:
J/A+A/397/213 : Galactic HII regions (Paladini+, 2003)
J/ApJ/582/756 : Velocities of HII regions (Kolpak+, 2003)
J/MNRAS/362/301 : Spectrophotometry of the HII region S311 (Garcia-Rojas+ 2005)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Cluster Cluster name
10- 17 F8.2 0.1nm Lambda0 ? Laboratory wavelength
19- 27 A9 --- Ion Ion
29- 43 A15 --- Mult Multiplet number
46- 53 F8.2 0.1nm LambdaObs ? Observed wavelength in the heliocentric
rest frame
55- 62 F8.3 --- F(Lambda) ? Observed flux relative to Hbeta (1)
64- 70 F7.3 ---- I(Lambda) ? Reddening-corrected flux relative to
Hbeta (1)
72- 73 I2 % e_F(Lambda) ? Fractional error (1sigma) in the line
intensities
74 A1 --- u_F(Lambda) Uncertainty flag on F(Lambda)
76 A1 --- Notes [b-g] Notes (2)
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Note (1): In units of F(Hbeta)=100. c(Hbeta), I(Hbeta) values per nebula are:
M16 (1.21, 7.331x10-12erg/cm2/s)
M20 (0.36, 1.081x10-12erg/cm2/s)
NGC 3603 (2.36, 6.506x10-11erg/cm2/s)
Note (2): Notes as follows:
b = Colons indicate uncertainties larger than 40%
c = Affected by telluric emission lines
d = Affected by atmospheric absorption bands
e = Affected by internal reflections or charge transfer in the CCD
f = Blend with an unknown line
g = Dubious identification
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 17-Oct-2006