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J/A+AS/129/455  Dwarf galaxy candidates around interacting galaxies (Deeg+ 1998)

A catalogue of dwarf galaxy candidates around interacting galaxies Deeg H.J., Munoz-Tunon C., Tenorio-Tagle G., Telles E., Vilchez J.M., Rodriguez-Espinosa J.M., Duc P.A., Mirabel I.F <Astron. Astrophys. Suppl. Ser. 129, 455 (1998)> =1998A&AS..129..455D (SIMBAD/NED BibCode)
ADC_Keywords: Galaxies, photometry Keywords: galaxies: interactions - galaxies: statistics - galaxies: formation Abstract: We present results from the imaging of a sample of 12 interacting galaxies for which we have catalogued all potential dwarf systems in the vicinity of these strongly interacting galaxies. After careful cleaning of the images and applying a restrictive S/N criterion we have identified, measured and catalogued all possible extended objects in each field. On the frames, covering 11.4x10.5arcmins, on the order of 100 non-stellar, faint, extended objects were found around each interacting galaxy. The vast majority (>98%) of these objects had not been previously identified. The number of expected objects in the magnitude range R=18-19.5 exceeds the expected count of background galaxies. This supports the possibility that a density enhancement of extended objects around some interacting galaxies results from the addition of a locally formed dwarf galaxy population. Description: The tables list positions, sizes and photometry in V and R band of extended objects found in fields, which include a nearby interacting galaxy. The tables' filenames are a combination of the table number and the interacting galaxy's name. The column-descriptions of all tables are identical, expect that the positional offsets refer to different reference positions in each table, given in Note (2). These reference positions are in the center of the interacting galaxy. Objects: ---------------------------------------------------------- RA (2000) DE Designation(s) ---------------------------------------------------------- 01 24 34.6 +03 47 50 NGC 520 01 59 12 +19 01 NGC 772 02 40 18 +39 04 NGC 1023 03 14 07.2 -02 48 52 NGC 1253 07 14 24 +73 29 Arp 141 08 11 13.4 +25 12 26 NGC 2535 08 11 16.1 +25 10 45 NGC 2536 08 38 24 +25 45 NGC 2623 09 14 06 +40 08 NGC 2782 10 23 27.3 +19 53 55 NGC 3226 10 23 30.5 +19 51 54 NGC 3227 11 23 36 +53 51 NGC 3656 11 28 33.6 +58 33 51 NGC 3690 11 51 06.0 +55 04 39 NGC 3921 ---------------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file t4n520.dat 76 85 Extended objects near NGC 520 t5n772.dat 76 119 Extended objects near NGC 772 t6n1023.dat 76 21 Extended objects near NGC 1023 t7n1253.dat 76 44 Extended objects near NGC 1253 t8a141.dat 76 183 Extended objects near Arp 141 t9n2535.dat 76 120 Extended objects near NGC 2535/6 t10n2623.dat 76 113 Extended objects near NGC 2623 t11n2782.dat 76 93 Extended objects near NGC 2782 t12n3226.dat 76 156 Extended objects near NGC 3226/7 t13n3656.dat 76 257 Extended objects near NGC 3656 t14n3690.dat 76 116 Extended objects near NGC 3690 t15n3921.dat 76 137 Extended objects near NGC 3921
Byte-by-byte Description of file: t*.dat
Bytes Format Units Label Explanations
1- 4 I4 --- ID + Identification number 7- 12 F6.2 arcsec hmaj Major halfaxis 15- 20 F6.2 arcsec hmin Minor halfaxis 23- 28 F6.2 deg PA [-90,90] Position Angle 31- 36 F6.2 mag Vmag ?=99.99 V magnitude (1) 39- 44 F6.2 mag e_Vmag ?=99.99 V magnitude error 47- 52 F6.2 mag Rmag ?=99.99 R magnitude (1) 55- 60 F6.2 mag e_Rmag ?=99.99 R magnitude error 62- 68 F7.1 arcsec oRA Positional offset in Right ascension (2) 71- 76 F6.1 arcsec oDE Positional offset in Declination (2)
Note (1): The NULL value (99.99) indicates that no photometric values are available. The value -99.99 indicates an oversaturated (too bright) object Note (2): The positional offsets are relative to the reference positions given in the paper's Table 1. They are reproduced here: --------------------------------------------------------- File Galaxy RA (J2000) DE --------------------------------------------------------- t4n520.dat NGC 520 1 24 35.33 3 47 37.0 t5n772.dat NGC 772 1 59 19.60 19 0 27.9 t6n1023.dat NGC 1023 2 40 24.09 39 3 45.9 t7n1253.dat NGC 1253 3 14 9.11 -2 49 22.2 t8a141.dat ARP 141 7 14 20.58 73 28 36.2 t9n2535.dat NGC 2535 8 11 14.60 25 11 36.0 t10n2623.dat NGC 2623 8 38 23.98 25 45 17.0 t11n2782.dat NGC 2782 9 14 5.08 40 6 49.4 t12n3226.dat NGC 3226 10 23 28.82 19 52 53.5 t13n3656.dat NGC 3656 11 23 38.43 53 50 30.9 t14n3690.dat NGC 3690 11 28 31.87 58 33 45.2 t15n3921.dat NGC 3921 11 51 6.63 55 4 45.0
Acknowledgements: Hans-Jorg Deeg
(End) Deeg [IAC], Patricia Bauer [CDS] 13-Jan-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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