J/A+A/429/115 JHK' photometry of Blue Compact Dwarf Galaxies (Noeske+, 2005)
New insights to the photometric structure of Blue Compact Dwarf Galaxies from
deep near-infrared studies. II. The sample of northern BCDs.
Noeske K.G., Papaderos P., Cairos L.M., Fricke K.J.
<Astron. Astrophys. 429, 115 (2005)>
=2005A&A...429..115N 2005A&A...429..115N
ADC_Keywords: Galaxies, photometry ; Photometry, infrared
Keywords: galaxies: dwarf - galaxies: evolution - galaxies: structure -
galaxies: starburst
Abstract:
This paper is part of a series of publications which present a
systematic study of Blue Compact Dwarf (BCD) Galaxies in the near
infrared (NIR). Compared to the visible light, NIR data allow a better
separation of the starburst emission from the light distribution of
the old stellar low-surface brightness (LSB) host galaxy. We analyze
deep NIR broad band images of a sample of 11 BCDs, observed with the
Calar Alto 3.6m telescope. This work enlarges the samples presented
in preceding papers of this study (Noeske et al., 2003A&A...410..481N 2003A&A...410..481N,
Cairos et al., 2003ApJ...593..312C 2003ApJ...593..312C) by BCDs of the most common
morphological type, displaying a regular elliptical LSB host galaxy.
The data presented here allow the detection and quantitative study of
the extended stellar LSB host galaxy in all sample BCDs.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 113 11 Sample galaxies
table2.dat 116 33 *Structural properties of the dwarfs
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Note on table2.dat: All values are corrected for Galactic extinction,
adopting the AB from table1.dat
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Name Name
10- 16 A7 --- Class Classification (1)
18- 19 I2 h RAh Right ascension (J2000)
21- 22 I2 min RAm Right ascension (J2000)
24- 27 F4.1 s RAs Right ascension (J2000)
29 A1 --- DE- Declination sign (J2000)
30- 31 I2 deg DEd Declination (J2000)
33- 34 I2 arcmin DEm Declination (J2000)
36- 39 F4.1 arcsec DEs Declination (J2000)
41- 44 I4 s tJ Exposition tine in J band
46- 49 I4 s tH Exposition tine in H band
51- 54 I4 s tK' Exposition tine in K' band
56- 60 F5.1 mag BMAG Absolute B magnitude
62 A1 --- r_BMAG Reference for BMAG (2)
64- 67 F4.2 mg AB Absorption in B band
69- 72 F4.1 Mpc Dist Distance
74- 76 A3 --- r_Dist Reference for Dist (2)
78- 80 F3.1 arcsec FWHM Final FWHM
82-113 A32 --- ONames Other names
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Note (1): Classification, from Loose and Thuan, 1986, in
"Star Forming Dwarfs Galaxies and Related Objects":
iE = irregular distributed
iI = irregular isophote
C = cometary
nE = centrally confined
Note (2): References are the following:
a: Tully (1988, Cat. VII/145)
b: Schulte-Ladbeck et al. (2001AJ....121.3007S 2001AJ....121.3007S)
c: inferred from the heliocentric velocity vhel listed in the NED,
corrected for solar motion with respect to the center of the
Virgo Cluster and adopting H0=75km/s/Mpc (cf. Noeske et al.,
2003A&A...410..481N 2003A&A...410..481N)
d: Drozdovsky et al. (2001ApJ...551L.135D 2001ApJ...551L.135D)
e: see Sect. 4.11
f: mB from Table 2 in Cairos et al. (2001ApJS..133..321C 2001ApJS..133..321C)
g: mB from Papaderos et al. (1996A&AS..120..207P 1996A&AS..120..207P)
h: mB from Thuan et al. (1996ApJ...463..120T 1996ApJ...463..120T)
i: mB from the RC3 (de Vaucouleurs et al., 1991, Cat. VII/155)
j: mB from Vennik et al. (2000A&AS..142..399V 2000A&AS..142..399V).
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Name Galaxy name
11- 13 F3.1 ---- b ? b parameter for eq. 2 (1)
14 A1 --- --- [,]
16- 19 F4.2 --- q ? q parameter for eq. 2 (1)
21 A1 --- Note [*] * Objects for which the LSB component
was modelled by a pure exponential,
SuBr(R*)=SuBrE,0 + 1.0857(R*/alpha)
22 A1 ---- n_Name [fg] Note on Name (2)
24- 25 A2 --- Band Filter (J, H, K')
26- 27 A2 --- n_Band [dieh ] Note on Band (3)
29- 33 F5.2 mag/arcsec+2 SuBrE,0 ? Extrapolated central surface brightness
in the band (5)
35- 38 F4.2 mag/arcsec+2 e_SuBrE,0 ? rms uncertainty on SuBrE,0 (5)
40- 43 F4.2 kpc alpha ? Exponential scale length, alpha (1)
45- 48 F4.2 kpc e_alpha ? rms uncertainty on alpha
50- 54 F5.2 mag mLSB ? Total apparent magnitude of the LSB
component, computed by extrapolating
the fitted model to R*=∞
56- 59 F4.2 kpc Piso ? Radial extent of the star-forming
component, at an isophotal level iso (4)
61- 65 F5.2 mag mPiso ? Encircled magnitude of the star-forming
component, at an isophotal level iso (4)
67- 70 F4.2 kpc Eiso ? Radial extent of the underlying stellar
LSB component, at an isophotal level
iso (4)
72- 76 F5.2 mag mEiso ? Encircled magnitude of the underlying
stellar LSB component, at an isophotal
level iso (4)
78- 82 F5.2 mag mSBP Magnitude from surface brightness profile
(SBP) integration out to the last data
point
84- 88 F5.2 mag mtot Total magnitude from aperture
measurements (5)
90- 93 F4.2 mag e_mtot rms uncertainty on mtot (5)
95- 98 F4.2 kpc reff Effective radius, enclosing 50% of the
SPP's flux
99 A1 --- --- [,]
100-103 F4.2 kpc r80 Radius, enclosing 80% of the SPP's flux
105-108 F4.2 --- etaSBP Formal Sersic exponent for the whole SBP
110-113 F4.2 mag sigma J, H, K' calibration uncertainty for
each galaxy (5)
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Note (1): When a central flattening of the outer exponential intensity
distribution of the LSB host had to be postulated, a modified
exponential distribution Eq. (2) was applied to decompose the total
SPPs:
Eq. (2): I(R*)=I(E,0)exp(-R*/alpha){1-q.exp(-P3(R*))} with
P3(R*)=(R*/b.alpha)3 + [(R*/alpha).(1-q)/q]
Note (2): Notes on name are the following:
f: Small systematic deviations from the exponential LSB profile,
likely type V surface brightness profile (SBP) (see notes of
caution in Sect. 3)
g: Small systematic deviations from the exponential LSB profile,
likely type V SBP (see Sect. 4.4 and notes of caution in Sect. 3)
Note (3): Notes on Band are the following:
d: Decomposition less reliable in this filter (low S/N, or data
affected by nearby bright stars)
i: Likely type V SBP, cannot be reliably modelled; exponential LSB
fit yields unphysical H band decomposition (see Sect. 4.2)
e: K' SBP less deep than J and H; effects on mSBP, mtot and etaSBP
h: Detected or likely type V SBP restricts exponential part of LSB
fit to low S/N region, preventing robust decomposition in the K band.
Note (4): The isophotal levels iso are
23mag/arcsec2 for J, 22mag/arcsec2 for H and K'.
Note (5): Errors do not include the calibration uncertainties given
last column (sigma).
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History:
From electronic version of the journal
References:
Noeske et al., Paper I 2003A&A...410..481N 2003A&A...410..481N
(End) Patricia Vannier [CDS] 14-Dec-2004