J/MNRAS/384/1544 Surface photometry of local dwarf galaxies (Sharina+, 2008)
Photometric properties of the Local Volume dwarf galaxies.
Sharina M.E., Karachentsev I.D., Dolphin A.E., Karachentseva V.E.,
Tully R.B., Karataeva G.M., Makarov D.I., Makarova L.N., Sakai S.,
Shaya E.J., Nikolaev E.Y., Kuznetsov A.N.
<Mon. Not. R. Astron. Soc., 384, 1544-1562 (2008)>
=2008MNRAS.384.1544S 2008MNRAS.384.1544S
ADC_Keywords: Galaxies, nearby ; Photometry ; Morphology
Keywords: galaxies: fundamental parameters - galaxies: general -
galaxies: photometry - galaxies: structure
Abstract:
We present surface photometry and metallicity measurements for 104
nearby dwarf galaxies imaged with the Advanced Camera for Surveys and
Wide Field and Planetary Camera 2 aboard the Hubble Space Telescope.
In addition, we carried out photometry for 26 galaxies of the sample
and for Sextans B on images of the Sloan Digital Sky Survey. Our
sample comprises dwarf spheroidal, irregular and transition type
galaxies located within ∼10Mpc in the field and in nearby groups:
M81, Centaurus A, Sculptor and Canes Venatici I cloud. It is found
that the early-type galaxies have on average higher metallicity at a
given luminosity in comparison to the late-type objects. Dwarf
galaxies with MB≥-12 to -13mag deviate towards larger scalelengths
from the scalelength-luminosity relation common for spiral galaxies,
h∝L0.5B.
Description:
Our sample (see Table 1) consists of 104 dwarf galaxies observed with
the Wide Field and Planetary Camera 2 (WFPC2) using the WF3-fix
aperture (proposals GO 8192 and 8601) and with the Advanced Camera for
Surveys (ACS) (proposals 9771 and 10235). All HST observations were
carried out with the filters F606W and F814W, the response
characteristics of which can be transformed to the filters V and I in
the Johnson-Cousins system. The exposure times were 600s in each
filter for the WFPC2 sample. The ACS images were taken with the
exposure times of 900 and 1200s in the F606W and F814W filters,
respectively.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 189 107 Properties of the Local Volume dwarf galaxies
table2.dat 140 27 *Fundamental photometric parameters of galaxies from
Table 1 measured on the SDSS images in g and r bands
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Note on table2.dat: The data were transformed into B and R bands of the
Johnson-Cousins system using the transformations by Jordi et al.
(2006A&A...460..339J 2006A&A...460..339J).
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See also:
II/282 : SDSS Photometric Catalog, Release 6 (Adelman-McCarthy+, 2007)
J/AJ/127/2031 : Catalog of neighboring galaxies, CNG (Karachentsev+, 2004)
http://www.sdss.org : SDSS Home Page
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 14 A14 --- Name Galaxy Name
16- 20 A5 --- n_Name Notes (1)
22- 23 I2 h RAh Right ascension (J2000) (2)
25- 26 I2 min RAm Right ascension (J2000) (2)
28- 31 F4.1 s RAs Right ascension (J2000) (2)
33 A1 --- DE- Declination (J2000) (2)
34- 35 I2 deg DEd Declination (J2000) (2)
37- 38 I2 arcmin DEm Declination (J2000) (2)
40- 43 F4.1 arcsec DEs Declination (J2000) (2)
45- 49 F5.2 mag mu0 ? Distance modulus
51- 55 F5.3 mag AV ? Galactic extinction in V-band from
Schlegel et al. (1998ApJ...500..525S 1998ApJ...500..525S)
57- 61 F5.2 [Sun] [Fe/H] ? Mean metallicity of the RGBs
63- 66 F4.2 [Sun] e_[Fe/H] ? Random error on [Fe/H]
67 A1 --- --- [,]
68- 71 F4.2 [Sun] e[Fe/H] ? Systematic error on [Fe/H]
73- 76 F4.2 mag e_V-Ic ? σ(V-Ic) of RGBs measured at
MI=-3.5
78- 81 F4.2 arcmin Dlim ? Limiting diameter of our photometry
83- 86 F4.2 arcmin Diam Projected major axis from
CNG (Cat. J/AJ/127/2031)
88- 92 F5.2 mag VmagL ? Apparent V magnitude integrated
within the diameter Dlim
94- 97 F4.1 mag/arcsec2 SBVL Limiting V surface brightnesses taken
at the distance Dlim/2 from centers of
galaxies (G1)
99-103 F5.2 mag (V-Ic)e Effective (V-Ic) colour index (G1)
104 A1 --- n_(V-Ic)e [a] a for average colour index
106-110 F5.2 mag/arcsec2 SBV25 ?=- Mean surface brightness within the
isophote of 25mag/arcsec2
in the V band (G1)
112-116 F5.2 mag V25 ?=- Apparent V magnitude integrated
within the isophote level
25mag/arcsec2 (G1)
118-122 F5.2 arcsec RV25 ?=- Projected major axis radius at the
isophote level 25mag/arcsec2 in
the V band (G1)
124-128 F5.2 mag IcmagL ? Apparent Ic magnitude integrated
within the diameter Dlim
130-133 F4.1 mag/arcsec2 SBIcL ? Limiting Ic surface brightness taken
at the distance Dlim/2 from center
of galaxy (G1)
135-139 F5.2 mag/arcsec2 SBVe ? Effective SB in the V-band (G1)
141-145 F5.2 mag/arcsec2 SBIc25 ? Mean surface brightness within the
isophote of 25mag/arcsec2 in the
Ic band (G1)
147-151 F5.2 mag Ic25 ? Apparent Ic magnitude integrated
within the isophote level
25mag/arcsec2 (G1)
153-158 F6.2 arcsec RIc25 ? Projected major axis radius at the
isophote level 25mag/arcsec2
in the Ic band (G1)
160-164 F5.2 mag/arcsec2 SBVC Best exponential fitting central
surface brightness in V band (G1)
166-169 F4.2 mag/arcsec2 e_SBVC rms uncertainty on SBVC
171-175 F5.2 mag/arcsec2 SBIcC Best exponential fitting central
surface brightness in Ic band (G1)
177-180 F4.2 mag/arcsec2 e_SBIcC rms uncertainty on SBIcC
182-183 I2 arcsec Re ? Effective radius
185-186 I2 --- T Morphological type (3)
188-189 I2 arcsec h ? Sersic scale length
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Note (1): Corresponding name of the HST proposal as follows:
1 = refers to the proposals ID 9771 and 10235
2 = refers to the proposal ID 10210
3 = refers to the proposals ID 8192 and 8601
S = SDSS images were used
Note (2): Equatorial coordinates (J2000) from CNG (Cat. J/AJ/127/2031).
Note (3): From CNG (Cat. J/AJ/127/2031) in numerical code according to
de Vaucouleurs et al. (1991, Cat. VII/155).
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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- 7 A7 --- Name Galaxy Name
9- 10 I2 h RAh Right ascension (J2000)
12- 13 I2 min RAm Right ascension (J2000)
15- 18 F4.1 s RAs Right ascension (J2000)
20 A1 --- DE- Declination (J2000)
21- 22 I2 deg DEd Declination (J2000)
24- 25 I2 arcmin DEm Declination (J2000)
27- 30 F4.1 arcsec DEs Declination (J2000)
32- 35 F4.2 arcmin Diam Projected major axis from
CNG (Cat. J/AJ/127/2031)
37- 40 F4.2 arcmin Dlim ? Limiting diameter of our photometry
42- 46 F5.2 mag BmagL ? Apparent Johnson B magnitude integrated
within the diameter Dlim
48- 52 F5.2 mag/arcsec2 SBBL Limiting Johnson B surface brightness taken
at the distance Dlim/2 from center of
galaxy (G1)
54- 57 F4.2 mag (B-R)e Effective Johnson-Cousins (B-R) colour
index (G1)
59- 63 F5.2 mag/arcsec2 SBB25 ?=- Mean surface brightness within the
isophote of 25mag/arcsec2
in the Johnson B band (G1)
65- 69 F5.2 mag B25 ?=- Apparent Johnson B magnitude
integrated within the isophote
level 25mag/arcsec2 (G1)
71- 75 F5.2 arcsec RB25 ?=- Projected major axis radius at the
isophote level 25mag/arcsec2 in
the Johnson B band (G1)
77- 81 F5.2 mag RcmagL ? Apparent Cousins R magnitude
integrated within the diameter Dlim
83- 87 F5.2 mag/arcsec2 SBRcL ? Limiting Cousins R surface brightness
taken at the distance Dlim/2 from
center of galaxies (G1)
89- 93 F5.2 mag/arcsec2 SBRce ? Effective surface brightness in the
Cousins R-band (G1)
95- 99 F5.2 mag/arcsec2 SBRc25 ? Mean surface brightness within the
isophote of 25mag/arcsec2 in the
Cousins R band (G1)
101-105 F5.2 mag Rc25 ? Apparent Cousins R magnitude
integrated within the isophote level
25mag/arcsec2 (G1)
107-112 F6.2 arcsec RRc25 ? Projected major axis radius at the
isophote level 25mag/arcsec2
in the Cousins R band (G1)
114-118 F5.2 mag/arcsec2 SBBC Best exponential fitting central
surface brightness in B band (G1)
120-123 F4.2 mag/arcsec2 e_SBBC rms uncertainty on SBBC
125-129 F5.2 mag/arcsec2 SBRcC Best exponential fitting central surface
brightness in Cousins R band (G1)
131-134 F4.2 mag/arcsec2 e_SBRcC rms uncertainty on SBRcC
136-137 I2 arcsec Re ? Effective radius
139-140 I2 arcsec h ? Exponential scale length
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Global notes:
Note (G1): not corrected for Galactic extinction.
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 09-Apr-2009