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 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:
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FileName Lrecl Records Explanations
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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
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See also:
VII/77 : Isolated Pairs of Galaxies in Northern Hemisphere (Karachentsev 1972)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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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
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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.
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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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)
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Note (2): Notes:
CP = Pair apparently in Contact
BS = Bright Star nearby in the Field
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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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)
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Note (1): Elmegreen and Elmegreen, 1982MNRAS.201.1021E 1982MNRAS.201.1021E, arm class.
Arm classification system for spiral galaxies:
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EE Prototypes Description
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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.
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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
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Byte-by-byte Description of file: tablea1.dat
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Bytes Format Units Label Explanations
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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
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Acknowledgements: Ivanio Puerari
(End) Patricia Bauer [CDS] 12-Oct-2001