J/AJ/127/3213 BVR imaging survey of nine early-type galaxies (Marcum+, 2004)
Early-type galaxies in extremely isolated environments: typical ellipticals.
Marcum P.M., Aars C.E., Fanelli M.N.
<Astron. J., 127, 3213-3234 (2004)>
=2004AJ....127.3213M 2004AJ....127.3213M
ADC_Keywords: Galaxies, photometry
Keywords: galaxies: elliptical and lenticular, cD - galaxies: evolution -
galaxies: photometry
Abstract:
We have conducted a BVR imaging survey of nine early-type galaxies
previously verified to exist in extremely isolated environments. Our
goals are to establish a baseline of morphological and photometric
properties for spheroidal systems evolving in extremely low-density
environments and to compare these properties with signatures predicted
for merged galaxy groups.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 50 9 Physical Properties of isolated elliptical galaxies
table3.dat 151 9 Integrated Photometric Properties
tablea1.dat 87 198 Growth curve photometry
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See also:
VII/82 : Catalogue of Isolated Galaxies (Karachentseva+ 1986)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- --- [KIG]
5- 7 I3 --- KIG KIG number (Karachentseva, 1973, Cat. VII/82)
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 sign (J2000)
21- 22 I2 deg DEd Declination (J2000)
24- 25 I2 arcmin DEm Declination (J2000)
27- 28 I2 arcsec DEs Declination (J2000)
30- 34 I5 km/s RV Recessional velocity, corrected to the
Galactic standard of rest
36- 40 F5.1 Mpc Dist Distance, calculated using H0=70km/s
42- 45 F4.1 kpc d25kpc 25th mag/arcsec+2 B-band isophotal
physical diameter
47- 50 F4.1 arcsec d25 25th mag/arcsec+2 B-band isophotal
angular diameter
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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 --- --- [KIG]
5- 7 I3 --- KIG KIG number
9- 13 F5.2 mag Bmag0O Total B magnitude for an old stellar
population (1)
15- 18 F4.2 mag e_Bmag0O ? rms uncertainty on Bmag0O
20- 23 F4.2 mag (B-V)0O Broadband B-V colour for an old stellar
population (1)
25- 28 F4.2 mag e_(B-V)0O ? rms uncertainty on (B-V)0
30- 33 F4.2 mag (V-R)0O ?=- Broadband V-R colour for an old stellar
population (1)
35- 38 F4.2 mag e_(V-R)0O ? rms uncertainty on (V-R)0
40- 45 F6.2 mag BMAG0O Absolute B magnitude for an old stellar
population
47- 50 F4.2 mag cABO Adopted k correction in B for an old stellar
population
52- 55 F4.2 mag cAB-VO Adopted k correction in B-V for an old stellar
population
57- 60 F4.2 mag cAV-RO Adopted k correction in V-R for an old stellar
population
62- 66 F5.2 mag Bmag0Y Total B magnitude for an young stellar
population (1)
68- 71 F4.2 mag e_Bmag0Y ? rms uncertainty on Bmag0Y
73- 76 F4.2 mag (B-V)0Y Broadband B-V colour for an young stellar
population (1)
78- 81 F4.2 mag e_(B-V)0Y ? rms uncertainty on (B-V)0Y
83- 86 F4.2 mag (V-R)0Y ?=- Broadband V-R colour for an young stellar
population (1)
88- 91 F4.2 mag e_(V-R)0Y ? rms uncertainty on (V-R)0Y
93- 98 F6.2 mag BMAG0Y Absolute B magnitude for an young stellar
population
100-103 F4.2 mag cABY Adopted k correction in B for an young
stellar population
105-108 F4.2 mag cAB-VY Adopted k correction in B-V for an young
stellar population
110-113 F4.2 mag cAV-RY Adopted k correction in V-R for an young
stellar population
115-119 F5.2 mag Bmag0 Total B magnitude with no-k correction (1)
121-124 F4.2 mag (B-V)0 Broadband B-V colour with no-k correction (1)
126-129 F4.2 mag (V-R)0 ?=- Broadband V-R colour with no-k
correction (1)
131-136 F6.2 mag BMAG0 Absolute B magnitude with no-k correction
138-141 F4.2 --- Bcoeff reddening coefficient in the B filter
143-146 F4.2 --- B-Vcoeff reddening coefficient in the B-V
148-151 F4.2 --- V-Rcoeff reddening coefficient in the V-R
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Note (1): within the elliptical aperture at 25th mag arcsec-2 B-band isophote
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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 --- --- [KIG]
5- 7 I3 --- KIG KIG number
9- 12 F4.2 --- Ellipt Ellipticity
14- 16 I3 deg PA Position angle (1)
18- 21 F4.1 arcsec MajAxis Semi-major axis of elliptical aperture
23- 27 F5.2 mag Bmag ?=99.99 Integrated B band magnitude (2)
29- 32 F4.2 mag e_Bmag ?=9.99 The 1σ error in Bmag
34- 38 F5.2 mag Vmag ?=99.99 Integrated V band magnitude (2)
40- 43 F4.2 mag e_Vmag ?=9.99 The 1σ error in Vmag
45- 49 F5.2 mag Rmag ?=99.99 Integrated R band magnitude (2)
51- 54 F4.2 mag e_Rmag ?=9.99 The 1σ error in Rmag
56- 60 F5.2 mag/arcsec2 BSB ?=99.99 Isophotal azimuthally-averaged
B band surface brightness (3)
62- 65 F4.2 mag/arcsec2 e_BSB ?=9.99 Uncertainty in BSB
67- 71 F5.2 mag/arcsec2 VSB ?=99.99 Isophotal azimuthally-averaged
V band surface brightness (3)
73- 76 F4.2 mag/arcsec2 e_VSB ?=9.99 Uncertainty in VSB
78- 82 F5.2 mag/arcsec2 RSB ?=99.99 Isophotal azimuthally-averaged
R band surface brightness (3)
84- 87 F4.2 mag/arcsec2 e_RSB ?=9.99 Uncertainty in RSB
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Note (1): Position angle measured positive in going eastwards from north,
in the traditional sense.
Note (2): Interior to indicated aperture for the given filter, with applied
Galactic extinction and k-corrections as listed in Table 3.
Note (3): At indicated radius for the given filter, with applied Galactic
extinction and k-corrections as listed in Table 3. The listed
R-band data for KIG 870 are not calibrated, and therefore the data
are in units of relative magnitudes.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 29-Dec-2006