J/A+A/428/837 HII regions in minor mergers of galaxies (Ferreiro+, 2004)
Sample of minor mergers of galaxies:
Optical CCD surface photometry and HII region properties.
Ferreiro D.L., Pastoriza M.G.
<Astron. Astrophys. 428, 837 (2004)>
=2004A&A...428..837F 2004A&A...428..837F
ADC_Keywords: H II regions ; Galaxies, photometry ; Photometry, surface ;
Morphology
Keywords: galaxies: photometry - galaxies: interactions - galaxies: irregular
Abstract:
We present the results of the B, V and I photometry of eleven southern
minor mergers. The total apparent B magnitude, integrated B-V and V-I
colours were measured. We built B, V, and I equivalent profiles for
each galaxy and decomposed them into bulge and disk components when
possible. From Hα+N[II] images we have estimated the basic
photometric parameters of the HII regions, such as position, size, B-V
and V-I colours, Hα+[NII] luminosity and EW(Hα+[NII])
equivalent width.
Description:
The observations were taken in 1999 July using a Tektronix 2048x2048
CCD attached to the Cerro Tololo Inter-American Observatory 0.90m
telescope.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table4.dat 61 22 B magnitude, B-V and V-Ic integrated colours,
B absolute magnitude, major and minor diameters
table5.dat 84 118 HII region, position, equivalent radius, colour,
Hα+[NII] luminosity & equivalent width, and age
table6.dat 84 22 Photometric bulge and disk parameters for each filter
tables.tex 297 352 LaTeX version of the tables
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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 A1 --- Group [MS] M: Main, S: Secondary
3- 14 A12 --- [FP2004] Galaxy name (AMHHMM+DDdWW)
16- 20 F5.2 mag Bmag B Magnitude (1)
22- 25 F4.2 mag E(B-V)i ? Internal B-V colour excess
27- 31 F5.3 mag E(B-V)g Galactic B-V colour excess
33- 36 F4.2 mag B-V B-V integrated colour (1)
39- 42 F4.2 mag V-Ic V-Ic integrated colour (1)
44- 49 F6.2 mag BMAG B absolute magnitude (1)
51- 55 F5.1 arcsec D major diameter (2)
58- 61 F4.1 arcsec d minor diameter (2)
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Note (1): All magnitudes are corrected for both galactic and internal extinction
Note (2): Major (D) and minor (d) diameters measured inside the
24mag/arcsec-2 isophote.
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 12 A12 --- [FP2004] Galaxy name (AMHHMM+DDdWW)
14- 15 A2 --- HII HII region designation
18- 20 I3 arcsec Xpos X position
22- 25 I4 arcsec Ypos Y position
27- 32 F6.2 pc req Equivalent radius
34- 38 F5.2 mag Bmag B magnitude
40- 43 F4.2 mag e_Bmag rms uncertainty on Bmag
45- 48 F4.2 mag B-V B-V colour index
50- 53 F4.2 mag V-Ic V-Ic colour index
55- 62 E8.3 10-7W L(Ha+[NII]) ? Hα+[NII] luminosity
64- 71 E8.3 10-7W e_L(Ha+[NII]) ? rms uncertainty on L(Ha+[NII])
73- 75 F3.1 [0.1nm] log(EW(Ha+[NII])) ? Hα+[NII] equivalent width
77- 80 F4.1 Gyr Age ? Age
82- 84 F3.1 Gyr e_Age ? rms uncertainty on Age
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Byte-by-byte Description of file: table6.dat
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Bytes Format Units Label Explanations
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1- 12 A12 --- [FP2004] Galaxy name (AMHHMM+DDdWW)
14- 18 F5.2 mag/arcsec2 Bme ? me=-2.5log(Ie) in B band (1)
20- 24 F5.2 kpc Breff ? Effective radius in B band
26- 30 F5.2 mag/arcsec2 Bb0 b0=-2.5log(Id) in B band (1)
32- 36 F5.2 kpc Bdl Length scale in B band
38- 42 F5.2 mag/arcsec2 Vme ? me=-2.5log(Ie) in V band (1)
44- 48 F5.2 kpc Vreff ? Effective radius in V band
50- 54 F5.2 mag/arcsec2 Vb0 ? b0=-2.5log(Id) in V band (1)
56- 60 F5.2 kpc Vdl ? Length scale in V band
62- 66 F5.2 mag/arcsec2 Ime ? me=-2.5log(Ie) in I band (1)
68- 72 F5.2 kpc Ireff ? Effective radius in I band
74- 78 F5.2 mag/arcsec2 Ib0 ? b0=-2.5log(Id) in I band (1)
80- 84 F5.2 kpc Idl ? Length scale in I band
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Note (1): Ie is the effective intensity, Id is the central intensity.
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Acknowledgements: Diego Ferreiro
(End) Patricia Vannier [CDS] 03-Sep-2004