Access to Astronomical Catalogues

← Click to display the menu
J/MNRAS/368/247     Abundances of 6 suspected CP stars        (Catanzaro+, 2006)

Spectroscopic analyses of six suspected chemically peculiar stars. Catanzaro G. <Mon. Not. R. Astron. Soc., 368, 247-252 (2006)> =2006MNRAS.368..247C
ADC_Keywords: Stars, peculiar ; Abundances, peculiar Keywords: stars: abundances - stars: chemically peculiar - stars: individual: HD 155102 - stars: individual: HD 159082 - stars: individual: HD 162132 Abstract: The abundance pattern of six stars classified as suspected chemically peculiar in the General Catalogue of Ap and Am stars (III/162) by Renson has been derived to ascertain the real nature of these objects. Spectroscopic observations in the range λλ4800-5600Å have been carried out at the stellar station of the INAF Catania Astrophysical Observatory. Among the studied stars, for only three of them we confirmed their peculiarity, HD 155102 being a silicon star, HD 159082 a mercury-manganese star and HD 162132 a moderate metallic A-type star. The other three objects have chemical abundances not so different from the standard values derived in the literature for A-type stars and, furthermore, they do not show light variability. Hence, we suggest that they could be ruled out from Renson's catalogue. Description: Spectroscopic observations were carried out at the 91-cm telescope of the INAF Catania Astrophysical Observatory. The telescope is linked with a REOSC spectrograph through an ultraviolet(UV)-near-infrared fibre of 200-m core diameter. Objects: -------------------------------------------------------------- RA (2000) DE Designation(s) (File) -------------------------------------------------------------- 17 07 46.7 +40 30 58 HD 155102 = HIP 83816 (tablea1.dat) 17 10 22.7 -15 43 30 HD 155125 = HIP 84012 (tablea2.dat) 17 24 31.5 +16 18 04 HD 157740 = HIP 85185 (tablea3.dat) 17 26 46.1 +34 41 45 HD 158261 = HIP 85382 (tablea4.dat) 17 32 14.9 +11 55 48 HD 159082 = HIP 85826 (tablea5.dat) 17 47 08.0 +47 36 44 HD 162132 = HIP 87045 (tablea6.dat) --------------------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 74 7 Journal of observations table2.dat 88 13 Derived abundances and errors for the suspected CP stars of our sample tablea1.dat 38 44 Spectral lines identified in HD 155102 spectrum tablea2.dat 38 84 Spectral lines identified in HD 155125 spectrum tablea3.dat 38 48 Spectral lines identified in HD 157740 spectrum tablea4.dat 38 44 Spectral lines identified in HD 158261 spectrum tablea5.dat 38 32 Spectral lines identified in HD 159082 spectrum tablea6.dat 38 19 Spectral lines identified in HD 162132 spectrum refs.dat 217 18 References
See also: III/162 : General Catalogue of Ap and Am stars (Renson+ 1991) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 2 A2 --- --- [HD] 4- 9 I6 --- HD HD number 11- 15 I5 K Teff Effective temperature 17- 19 I3 K e_Teff rms uncertainty on Teff 21- 24 F4.2 [cm/s2] logg Surface gravity 26- 29 F4.2 [cm/s2] e_logg rms uncertainty on logg 31- 32 I2 km/s vsini Rotational velocity 34- 36 F3.1 km/s ksi Microturbulence velocity 38- 50 F13.5 d HJD Heliocentric Julian date 52- 57 F6.2 km/s HRV Heliocentric velocity 59- 62 F4.2 km/s e_HRV rms uncertainty on HRV 64- 74 A11 --- FileName Name of the file containing the spectral lines identified in the spectrum
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 5 A5 --- El Element 7- 11 F5.2 [-] AHD155102 ? HD 155102 abundance (logNel/Ntot) 13- 16 F4.2 [-] e_AHD155102 ? rms uncertainty on AHD155102 18- 22 F5.2 [-] AHD155125 ? HD 155125 abundance (logNel/Ntot) 24- 27 F4.2 [-] e_AHD155125 ? rms uncertainty on AHD155125 29- 33 F5.2 [-] AHD157740 ? HD 157740 abundance (logNel/Ntot) 35- 38 F4.2 [-] e_AHD157740 ? rms uncertainty on AHD157740 40- 44 F5.2 [-] AHD158261 ? HD 158261 abundance (logNel/Ntot) 46- 49 F4.2 [-] e_AHD158261 ? rms uncertainty on AHD158261 51- 55 F5.2 [-] AHD159082 ? HD 159082 abundance (logNel/Ntot) 57- 60 F4.2 [-] e_AHD159082 ? rms uncertainty on AHD159082 62- 66 F5.2 [-] AHD162132 ? HD 162132 abundance (logNel/Ntot) 68- 71 F4.2 [-] e_AHD162132 ? rms uncertainty on AHD162132 73- 77 F5.2 [-] ASun ? Sun Abundance (logNel/Ntot) (1) 79- 83 F5.2 [-] AA-type A-type Abundance (logNel/Ntot) (2) 85- 88 F4.2 [-] e_AA-type rms uncertainty on A-type (2)
Note (1): Solar values from Grevesse & Sauval, 1998, Space Sci. Rev., 85, 161. Note (2): Mean abundances derived for A-type stars (Erspamer & North, 2003, Cat. J/A+A/398/1121).
Byte-by-byte Description of file: tablea?.dat
Bytes Format Units Label Explanations
1- 5 A5 --- El Element 7- 14 F8.3 0.1nm Lambda Laboratory central wavelength 16- 20 F5.1 0.1pm EW Measured equivalent width 22- 27 F6.3 [-] loggf Adopted oscillator strength value 29- 33 F5.2 Sun Abund Derived abundance (logNel/Ntot) 35- 38 A4 --- r_loggf References for oscillator strength value
Byte-by-byte Description of file: refs.dat
Bytes Format Units Label Explanations
1 A1 --- Ref Reference code 3- 21 A19 ---- BibCode BibCode 23- 41 A19 --- Aut Author's name 43-217 A175 --- Com Comments
History: From electronic version of the journal
(End) Patricia Vannier [CDS] 16-Oct-2006
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

catalogue service

© UDS/CNRS

Contact