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J/A+A/335/912       Seyferts in galaxy pairs and groups (Kelm+ 1998)

Seyfert galaxies and environment: Seyferts in galaxy pairs and groups Kelm B., Focardi P., Palumbo G.G.C <Astron. Astrophys. 335, 912 (1998)> =1998A&A...335..912K (SIMBAD/NED BibCode)
ADC_Keywords: Galaxies, Seyfert Keywords: galaxies: interactions - galaxies: Seyfert Abstract: The occurrence of Seyfert galaxies in 6 samples representative of different cosmological environments (i.e. isolated pairs, compact and loose groups) is analysed. To avoid biases linked to subjective sample selection criteria only canonical samples, taken from the literature, are considered. It is found that the average frequency of Seyferts in all samples, is near 2%. Most Seyferts lying in pairs and compact groups show disturbed morphological appearance, whilst in loose groups disturbed and ``isolated'' Seyferts have roughly the same proportion. Then, within each sample, structures which host a Seyfert are compared to structures which do not. No appreciable differences regarding dynamical properties are found. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file tables.dat 73 130 Seyferts in different samples 72 692 Postscript version of the tables tables.tex 78 290 LaTeX version of the tables
See also: VII/82 : Catalogue of isolated galaxies J/other/ApL/30.1 : Southern cat. of isolated pairs extension (Reduzzi+ 1995) Byte-by-byte Description of file: tables.dat
Bytes Format Units Label Explanations
1 I1 --- Table [1/6] Table number (1) 3- 14 A12 --- Gal Galaxy Identificator 17- 18 A2 --- Type Seyfert type (2) 20- 21 I2 h RAh Right ascension (1950) 23- 24 I2 min RAm Right ascension (1950) 26- 27 I2 s RAs Right ascension (1950) 29 A1 --- DE- Declination sign 30- 31 I2 deg DEd Declination (1950) 33- 34 I2 arcmin DEm Declination (1950) 36- 37 I2 arcsec DEs Declination (1950) 39- 66 A28 --- Pair/group Group and/or Pair Identificator and, within parenthesis, number of galaxies belonging to the group. (3) 68 A1 --- pec [YN] Morphological peculiar appearance (4) 70- 73 A4 --- Ncomp Number of Seyfert close companions
Note (1): 1: Seyferts in Karachentsev's (Cat. VII/82) isolated pairs 2: Seyferts in Reduzzi & Rampazzo's (1995ApL....30....1R) isolated pairs 3: Seyferts in Hickson's (1993ApL....29....1H) compact groups 4: Seyferts in Ramella, Huchra & Geller's (1989ApJ...344...57R) groups 5: Seyferts in Maia, Da Costa & Latham's (1989ApJS...69..809M) groups 6: Seyferts in Garcia's (1993Thesi.........G) groups Note (2): Seyfert type is from Veron & Veron (1996, Cat. VII/207) catalog Note (3): Identification and number as from the original reference. Note (4): Morphological peculiarity has been derived via visual inspection of DSS and (in a few cases) of CCD R images taken at Loiano 152cm telescope.
Acknowledgements: P. Focardi
(End) Patricia Bauer [CDS] 29-Jun-1998
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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