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J/A+A/379/54     (S+S) binary galaxies BVRI photometry (Hernandez-Toledo+, 2001)

BVRI surface photometry of (S+S) binary galaxies. I. The data. Hernandez-Toledo H.M., Puerari I. <Astron. Astrophys. 379, 54 (2001)> =2001A&A...379...54H
ADC_Keywords: Galaxies, photometry ; Photometry, UBVRI Keywords: galaxies: spiral - galaxies: structure - galaxies: photometry - galaxies: interactions - galaxies: fundamental parameters - galaxies: kinematics and dynamics Abstract: We present multicolour broad band (BVRI) photometry for a sample of 33 spiral-spiral (S+S) binary galaxies drawn from the Karachentsev Catalogue of Isolated Pairs of Galaxies (KPG, Cat. VII/77). The data is part of a joint observational programme devoted to systematic photometric study of one of the most complete and homogeneous pair samples available in the literature. We present azimuthally averaged colour and surface brightness profiles, colour index (B-I) maps, B band and sharp/filtered B band images as well as integrated magnitudes, magnitudes at different circular apertures and integrated colours for each pair. Internal and external data comparisons show consistency within the estimated errors. Two thirds of the sample have total aperture parameters homogeneously derived for the first time. After reevaluating morphology for all the pairs, we find a change in Hubble type for 24 galaxies compared to the original POSS classifications. More than half of our pairs show morphological concordance which could explain, in part, the strong correlation in the (B-V) colour indices (Holmberg Effect) between pair components. We find a tendency for barred galaxies to show grand design morphologies and flat colour profiles. The measurements will be used in a series of forthcoming papers where we try to identify and isolate the main structural and photometric properties of disk galaxies at different stages of interaction. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 47 66 General data for the observed galaxies table3.dat 55 70 Magnitudes and colour indices table4.dat 56 66 Final results from this study tablea1.dat 74 99 Magnitudes at different circular apertures tables.tex 99 436 LaTeX version of the tables
See also: VII/77 : Isolated Pairs of Galaxies in Northern Hemisphere (Karachentsev 1972) Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 3 A3 --- --- [KPG] Karachentsev's Pairs of Galaxies 4- 6 I3 --- KPG Number in Karachentsev's (Cat. VII/77) 7 A1 --- m_KPG [AB] Multiplicity index on KPG 9- 19 A11 --- Name Other name 22- 26 F5.2 mag Bmag B magnitude 27- 29 A3 --- n_Bmag [(aps)] Note on Bmag (1) 31- 34 F4.1 kpc x12 ? Projected distance between the two galaxies of the pair 37- 41 I5 km/s RV Radial velocity 43- 47 F5.2 kpc a25 Semimajor axis measured at the magB25=mag/arcsec2 isophote
Note (1): Note on B magnitude: (a) = total (asymptotic) magnitude in the B system, derived by extrapolation from photoelectric aperture-magnitude data. (s) = total asymptotic magnitude in the B system, derived by extrapolation from (surface) photometry with photoelectric zero point. (p) = photographic magnitude reduced to the BT system.
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 3 A3 --- --- [KPG] Karachentsev's Pairs of Galaxies 4- 6 I3 --- KPG Number in Karachentsev's (Cat. VII/77) 7 A1 --- m_KPG [ABs] Multiplicity index on KPG 9- 13 F5.2 mag Bmag ? B magnitude 15- 19 F5.2 mag Vmag ? V magnitude 21- 25 F5.2 mag Rmag ? R magnitude 27- 31 F5.2 mag Imag ? I magnitude 33- 36 F4.2 mag B-V ? B-V colour index 38- 41 F4.2 mag B-I ? B-I colour index 43- 47 F5.2 mag B0T ? Dereddened total B magnitude 49- 52 F4.2 mag (B-V)0T ? Dereddened total B-V colour index 54- 55 A2 --- Notes [CP BS] Notes (2)
Note (2): Notes: CP = Pair apparently in Contact BS = Bright Star nearby in the Field
Byte-by-byte Description of file: table4.dat
Bytes Format Units Label Explanations
1- 3 A3 --- --- [KPG] Karachentsev's Pairs of Galaxies 4- 6 I3 --- KPG Number in Karachentsev's (Cat. VII/77) 7 A1 --- m_KPG Multiplicity index on KPG 9- 26 A18 --- MT(NED) NED Hubble type 28- 42 A15 --- MType This work Hubble type 44- 45 I2 --- EE [1/12]? EE arm class (1) 47- 48 A2 --- I/A [DI LI NI] I/A interaction class (2) 50 A1 --- Prof [F] Profile (F = Flat Colour Profile) 52- 56 A5 --- Notes Notes (3)
Note (1): Elmegreen and Elmegreen, 1982MNRAS.201.1021E, arm class. Arm classification system for spiral galaxies: ---------------------------------------------------------------------------- EE Prototypes Description ---------------------------------------------------------------------------- 1 NGC 2500 Chaotic appearance; no symmetry; fragmented arms with differing pitch angles 2 NGC 7793 Short fragmented spiral arm pieces defined mostly by HII regions; no regular pattern; loose, open arms 3 NGC 2841 Fragmented arms uniformly distributed around the NGC 5033 galactic center 4 NGC 2403 Only 1 prominent arm; fragmented spiral arms with no regular pattern in the rest of the galaxy 5 NGC 1313 Two symmetric, short arms in the inner regions; NGC 598 irregular arms in the outer regions 6 NGC 2935 Two symmetric inner arms; feathery appearance in the outer NGC 1637 arms, which tend to wrap tightly and form a ring-like structure. 7 NGC 2903 Two symmetric, long arms in the outer regions and irregular or feathery arms in the inner regions 8 NGC 3992 Tightly wrapped arms forming a ring-like structure with overall symmetry 9 NGC 5457 Multiple long and continuous arms in the outer parts, NGC 1232 two symmetric and continuous arms in the inner parts. 10 NGC 1300 Two long arms extending from either end of a NGC 5383 prominent bar. 11 NGC 7753 Two long, symmetric arms in the inner regions, with a NGC 5194 long, drawn out arm or arms in the outer regions; nearby galaxy apparently interacting 12 NNGC 4321 Two long, sharply defined symmetric arms dominating the total appearance. ---------------------------------------------------------------------------- Note (2): Karachentsev (1972, Catalogue of Isolated Pairs of Galaxies in the Northern Hemisphere, VII/77) interaction class Note (3): Notes: B = Bar K = Presence of Knots R = Ring Sh = Shell
Byte-by-byte Description of file: tablea1.dat
Bytes Format Units Label Explanations
1- 3 A3 --- --- [KPG] Karachentsev's Pairs of Galaxies 4- 6 I3 --- KPG Number in Karachentsev's (Cat. VII/77) 8- 12 F5.3 [arcmin] log(Ap)A Log(Aperture) of component A 14- 18 F5.3 [arcmin] log(Ap)B Log(Aperture) of component B 20- 25 F6.3 mag BmagA B magnitude of component A at log(Ap)A 27- 32 F6.3 mag BmagB B magnitude of component B at log(Ap)B 34- 39 F6.3 mag VmagA V magnitude of component A at log(Ap)A 41- 46 F6.3 mag VmagB V magnitude of component B at log(Ap)B 48- 53 F6.3 mag RmagA R magnitude of component A at log(Ap)A 55- 60 F6.3 mag RmagB R magnitude of component B at log(Ap)B 62- 67 F6.3 mag ImagA I magnitude of component A at log(Ap)A 69- 74 F6.3 mag ImagB I magnitude of component B at log(Ap)B
Acknowledgements: Ivanio Puerari
(End) Patricia Bauer [CDS] 12-Oct-2001
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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