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J/A+A/456/451       Magellanic Clouds PNe abundances         (Leisy+, 2006)

Planetary nebulae in the Magellanic Clouds. II. Abundances and element production. Leisy P., Dennefeld M. <Astron. Astrophys., 456, 451-466 (2006)> =2006A&A...456..451L
ADC_Keywords: Magellanic Clouds ; Planetary nebulae ; Abundances ; Spectroscopy Keywords: planetary nebulae: general - galaxies: Magellanic Clouds - galaxies: evolution - ISM: abundances - stars: abundances Abstract: We present the second part of an optical spectroscopic study of planetary nebulae in the LMC and SMC. The first paper, Leisy & Dennefeld (1996, Cat. J/A+AS/116/95), discussed the CNO cycle for those objects where C abundances were available. In this paper we concentrate more on other elemental abundances (such as O, Ne, S, Ar) and their implications for the evolution of the progenitor stars. We use a much larger sample of 183 objects, of which 65 are our own observations, where the abundances have been re-derived in a homogeneous way. For 156 of them, the quality of data is considered to be satisfactory for further analysis. Description: Abundances derived with ICF (ionization correction factors) for 156 PNe in the SMC and SMC In Annexes 1 and 2. All the line fluxes used for the calculations are also provided. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table3.dat 133 37 SMC PNe abundances table3a.dat 212 8 SMC mean values of the abundances and statistics table4.dat 133 120 LMC PNe abundances table4a.dat 212 8 LMC mean values of the abundances and statistics table5.dat 110 29 Objects with peculiar emission lines table6.dat 64 10 Extended objects tablea1.dat 60 3105 SMC line fluxes tablea1a.dat 57 45 SMC PNe physical parameters tablea2.dat 60 9522 LMC line fluxes tablea2a.dat 57 138 LMC PNe physical parameters
See also: J/A+AS/116/95 : Magellanic Clouds PNe line intensities (Leisy+, 1996) J/ApJS/75/407 : LMC + SMC PNe optical spectroscopy. I (Meatheringham+ 1991) J/ApJS/76/1085 : LMC + SMC PNe optical spectroscopy. II (Meatheringham+ 1991) J/MNRAS/234/583 : Abundances in Magellanic Cloud planetary nebulae (Monk+ 1988) Byte-by-byte Description of file: table[34].dat
Bytes Format Units Label Explanations
1- 3 I3 --- Seq Sequential number 5- 16 A12 --- Name PN name 18- 21 A4 --- PapI (P1) for objects already discussed in Paper I 23- 25 A3 --- RSpec Previous spectroscopic observations (1) 27 A1 --- Type [Iin] I, i or (n)on I type of PN 29- 32 F4.2 --- CHb Extinction 34 A1 --- n_Ne- [*~] Note on Ne- (G1) 36- 40 I5 cm-3 Ne- Electronic density (electron/cm3) 42 A1 --- n_TOIII [*:~] Note on TOIII 43- 47 I5 K TOIII Electronic temperature [OIII] 49 A1 --- n_TNII [:~*] Note on TNII 50- 54 I5 K TNII Electronic temperature [NII] 56- 60 F5.1 --- Excit Excitation (scale 1-10) 62 A1 --- n_He [<:~+] Note on He (G1) 63- 67 F5.2 [---] He Helium abundance (log scale, H=12) 69 A1 --- n_C [<:] Note on C (G1) 70- 73 F4.2 [---] C Carbon abundance (log scale, H=12) 75 A1 --- n_N [<:] Note on N (G1) 76- 79 F4.2 [---] N Nitrogen abundance (log scale, H=12) 81 A1 --- n_O [<:+] Note on O (G1) 82- 85 F4.2 [---] O Oxygen abundance (log scale, H=12) 87 A1 --- n_Ne [<:] Note on Ne (G1) 88- 91 F4.2 [---] Ne Neon abundance (log scale, H=12) 93 A1 --- n_S [~<:+] Note on S (G1) 94- 97 F4.2 [---] S Sulfur abundance (log scale, H=12) 99 A1 --- n_Ar [<:+] Note on Ar 100-103 F4.2 [---] Ar Argon abundance (log scale, H=12) 105-109 F5.2 [---] C/N Carbon nitrogen abundance ratio 111-115 F5.2 [---] C/O Carbon oxygen abundance ratio 117-121 F5.2 [---] N/O Nitrogen oxygen abundance ratio 123-127 F5.2 [---] C+N Carbon and nitrogen abundance sum 129-133 F5.2 [---] C+N+O Carbon nitrogen and oxygen abundance sum
Note (1): Previous spectroscopic observations as follows: mon = Monk et al., 1988, Cat. J/MNRAS/234/583 mea = Meatheringham and Dopita, 1991, Cat. J/ApJS/75/407 and J/ApJS/76/1085 vas = Vassiliadis et al., 1992ApJ...394..489V
Byte-by-byte Description of file: table[34]a.dat
Bytes Format Units Label Explanations
1- 50 A50 --- Group Group identification 52- 56 F5.2 [---] He Helium abundance (log scale, H=12 58- 61 F4.2 [---] C carbon abundance (log scale, H=12 63- 66 F4.2 [---] N nitrogen abundance (log scale, H=12 68- 72 F5.2 [---] O Oxygen abundance (log scale, H=12 74- 78 F5.2 [---] Ne Neon abundance (log scale, H=12 80- 83 F4.2 [---] S Sulfur abundance (log scale, H=12 85- 89 F5.2 [---] Ar Argon abundance (log scale, H=12 91- 95 F5.2 [---] C/N Carbon nitrogen abundance ratio 97-101 F5.2 [---] C/O Carbon oxygen abundance ratio 103-107 F5.2 [---] N/O Nitrogen oxygen abundance ratio 109-113 F5.2 [---] C+N Carbon and nitrogen abundance sum 115-119 F5.2 [---] C+N+O Carbon nitrogen and oxygen abundance sum 121-122 I2 --- o_He ? Number of objects for helium abundance 124 I1 --- o_C ? Number of objects for carbon abundance 126-127 I2 --- o_N ? Number of objects for nitrogen abundance 129-130 I2 --- o_O ? Number of objects for oxygen abundance 132-133 I2 --- o_Ne ? Number of objects for neon abundance 135-136 I2 --- o_S ? Number of objects for sulfur abundance 138-139 I2 --- o_Ar ? Number of objects for argon abundance 141 I1 --- o_C/N ? Number of objects for C/N 143 I1 --- o_C/O ? Number of objects for C/O 145-146 I2 --- o_N/O ? Number of objects for N/O 148-149 I2 --- o_C+N ? Number of objects for C+N 151-152 I2 --- o_C+N+O ? Number of objects for C+N+O 154-157 F4.2 [---] e_He ? 1 sigma error for helium abundance 159-162 F4.2 [---] e_C ? 1 sigma error for carbon abundance 164-167 F4.2 [---] e_N ? 1 sigma error for nitrogen abundance 169-172 F4.2 [---] e_O ? 1 sigma error for oxygen abundance 174-177 F4.2 [---] e_Ne ? 1 sigma error for neon abundance 179-182 F4.2 [---] e_S ? 1 sigma error for sulfur abundance 184-187 F4.2 [---] e_Ar ? 1 sigma error for argon abundance 189-192 F4.2 [---] e_C/N ? 1 sigma error for C/N 194-197 F4.2 [---] e_C/O ? 1 sigma error for C/O 199-202 F4.2 [---] e_N/O ? 1 sigma error for N/O 204-207 F4.2 [---] e_C+N ? 1 sigma error for C+N 209-212 F4.2 [---] e_C+N+O ? 1 sigma error for C+N+O
Byte-by-byte Description of file: table5.dat
Bytes Format Units Label Explanations
1- 12 A12 --- Name PN name 14 A1 --- l_Int1 [~] Limit flag on Int1 15- 17 F3.1 --- Int1 ? NIII_4641 intensity line (1) 19 A1 --- l_Int2 [~] Limt flag on Int2 20- 22 F3.1 --- Int2 ? CIII_4649 intensity line (1) 24 A1 --- l_Int3 [~] Limt flag on Int3 25- 27 F3.1 --- Int3 ? CIV_4659 intensity line (1) 29- 36 A8 --- Int4 [Yes Possible] CIV_5806 intensity line 38- 51 A14 --- Iron line identification 53-110 A58 --- Com Comments
Note (1): All intensities are normalized to Hβ=100.
Byte-by-byte Description of file: table6.dat
Bytes Format Units Label Explanations
1- 13 A13 --- Name PN name 15- 28 A14 --- Size Extension 30- 64 A35 --- Com Comments
Byte-by-byte Description of file: tablea1.dat tablea2.dat
Bytes Format Units Label Explanations
1- 12 A12 --- Name PN name 14- 18 F5.0 0.1nm Lambda Wavelength line 20- 33 A14 --- Line Identification line(s) 36- 41 F6.3 --- flambda Extinction function value 44 A1 --- l_Fobs Limit flag on Fobs 45- 50 F6.1 --- Fobs ?=- Observed intensity (1) 51 A1 --- u_Fobs [?] Uncertainty flag on Fobs 52 A1 --- l_Fcor Limit flag on Fcor 53- 59 F7.1 --- Fcor ?=- Corrected intensity (1) 60 A1 --- u_Fcor [?] Uncertainty flag on Fcor
Note (1): All intensities are normalized to Hβ=100.
Byte-by-byte Description of file: tablea1a.dat tablea2a.dat
Bytes Format Units Label Explanations
1- 12 A12 --- Name PN name 14- 18 F5.0 10-19W/m2 FHbeta ?=- Hβ flux (in 10-16erg/cm2/s) 21- 24 F4.1 % e_FHbeta ?=- rms uncertainty on Hbeta 27 A1 --- n_Ne- [*] Note on Ne- (G1) 28- 33 F6.0 cm-3 Ne- Electronic density (in electron/cm3) 35 A1 --- l_T[OIII] [*:] Note on T[OIII] (G1) 37- 42 F6.0 K T[OIII] ?=- Electronic [OIII] temperature 45 A1 --- l_T[NII] [*:] Note on T[NII] (G1) 47- 52 F6.0 K T[NII] ?=- Electronic [NII] temperature 54- 57 F4.2 --- Copt Extinction coefficient
Note (G1): Flags as follows: "*" = no direct temperature or density determination was possible so the value is chosen arbitrarily ":" = poorly determined value "+" = if one or more ionic stage is missing, we only have a lower limit to the abundance "<" = if no line at all was observed for a given element, we use the faintest line intensity detected in the spectrum to derive an upper limit to the abundance "~" = approximated value
Nomenclature note: LMC-PNazzo identified to MGPN LMC 48 by the author Acknowledgements: Pierre Leisy, pleisy(at)ing.iac.es
(End) Patricia Vannier [CDS] 07-Sep-2006
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