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J/A+A/419/469       Abundances in the galaxy HS 0837+4717    (Pustilnik+, 2004)

HS 0837+4717 - a metal-deficient blue compact galaxy with large nitrogen excess. Pustilnik S., Kniazev A., Pramskij A., Izotov Y., Foltz C., Brosch N., Martin J.-M., Ugryumov A. <Astron. Astrophys., 419, 469-484 (2004)> =2004A&A...419..469P
ADC_Keywords: Galaxies, spectra ; Equivalent widths ; Effective temperatures ; Abundances Keywords: galaxies: starburst - galaxies: abundances - galaxies: interactions - galaxies: evolution - stars: Wolf-Rayet - galaxies: individual (HS 0837+4717) Abstract: We present the results of high S/N long-slit spectroscopy with the Multiple Mirror (MMT) and the SAO 6-m (BTA) telescopes, optical imaging with the Wise 1-m telescope and HI observations with the Nancay Radio Telescope of the very metal-deficient (12+log(O/H)=7.64) luminous (MB=-18.1mag) blue compact galaxy (BCG) HS 0837+4717. Description: Spectrophotometric observations of HS 0837+4717 with high S/N ratio were obtained with the MMT on May 1, 1997. HI line observations were carried out in February 1998 with the 300m Nancay radio telescope (NRT). Objects: ---------------------------------------------------------- RA (2000) DE Designation(s) ---------------------------------------------------------- 08 40 30.0 +47 07 13 HS 0837+4717 ---------------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 67 42 Line intensities in the supergiant HII region table3.dat 53 30 Abundances in the supergiant HII region table4.dat 63 7 Parameters of the WR lines and of the broad components
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 4 I4 0.1nm lambda0 Laboratory wavelength 6- 19 A14 --- Ion Ion/transition 21- 25 F5.3 --- F/FHbM Relative observed flux, in units of Hbeta) flux, for MMT (aperture 1.5"x3.0") (1) 27- 31 F5.3 --- e_F/FHbM rms uncertainty on F/FHbM 33- 37 F5.3 --- I/IHbM Relative line flux, for MMT (aperture 1.5"x3.0") (1) (2) 39- 43 F5.3 --- e_I/IHbM rms uncertainty on I/IHbM 45- 49 F5.3 --- F/FHbA ? Relative observed flux, in units of Hbeta) flux, for BTA (aperture 2"x2.8") (1) 51- 55 F5.3 --- e_F/FHbA ? rms uncertainty on F/FHbA 57- 61 F5.3 --- I/IHbA ? Relative line flux, for BTA (aperture 2"x2.8") (1) (2) 63- 67 F5.3 --- e_I/IHbA ? rms uncertainty on I/IHbA
Note (1): Hβ values: ----------------------------------------------------------- Parameter Units MMT BTA ----------------------------------------------------------- C(Hβ) dex 0.12±0.06 0.12±0.07 EW(abs) 0.1nm 3.75±0.41 3.55±0.42 F(Hβ) 10-19W/m^2 258±3 313±9 EW(Hβ) 0.1nm 230± 6 222± 9 ----------------------------------------------------------- C(Hβ): extinction coefficient EW(abs): equivalent width of Balmer absorption lines in the underlying continuum F(Hβ): Measured flux in emission line Hβ EW(Hβ): Equivalent widths of the emission line Hβ ----------------------------------------------------------- Note (2): Relative line fluxes corrected for extinction C(Hβ) and equivalent width of Balmer absorptions.
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 12 A12 --- Value Parameter (1) 14- 17 A4 --- x_Value Unit of the MMT and BTA values 19- 27 F9.3 --- MMT MMT value 29- 35 F7.3 --- e_MMT ? rms uncertainty on MMT 37- 45 F9.3 --- BTA ? BTA value 47- 53 F7.3 --- e_BTA ? rms uncertainty on BTA
Note (1): Parameters: Te(OIII): T_e in the region of the predominant emission of [OIII] Te(OII): T_e in the region of the predominant emission of [OII] Te(SIII): T_e in intermediate region, in which lines of [SIII] Ne(SII): as determined on the ratio of line intensities of [SII] doublet 6716 and 6730Å are emitted ICF is the ionisation correction factor
Byte-by-byte Description of file: table4.dat
Bytes Format Units Label Explanations
1- 4 I4 0.1nm lambda Wavelength 6- 15 A10 --- Ion Ion (1) 20- 24 F5.1 10-19W/m2 FluxM MMT total flux (2) 26- 30 F5.1 10-19W/m2 FluxB BTA total flux (2) 32- 36 F5.1 0.1nm EWM MMT equivalent width 38- 42 F5.1 0.1nm EWB BTA equivalent width 44- 47 I4 km/s FWHMM MMT FWHM 49- 52 I4 km/s FWHMB BTA FWHM 54- 57 F4.1 % FB/FNM ? MMT broad/nebular flux ratio 60- 63 F4.1 % FB/FNB ? BTA broad/nebular flux ratio
Note (1): Observed WR/O stars ratio: 0.02 Model WR/O stars ratio: 0.02 (data from Schaerer & Vacca (1998ApJ...497..618S) Note (2): Flux errors are ∼50% for the broad HeII λ4686 line and ~(15-25)% for the broad components of the strong lines.
Acknowledgements: Simon Pustilnik
(End) Patricia Bauer [CDS] 01-Jun-2004
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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