J/MNRAS/445/881 LVL global optical photometry (Cook+, 2014)
The Spitzer Local Volume Legacy (LVL) global optical photometry.
Cook D.O., Dale D.A., Johnson B.D., Van Zee L., Lee J.C., Kennicutt R.C.,
Calzetti D., Staudaher S.M., Engelbracht C.W.
<Mon. Not. R. Astron. Soc., 445, 881-889 (2014)>
=2014MNRAS.445..881C 2014MNRAS.445..881C
ADC_Keywords: Surveys ; Galaxies, nearby ; Galaxies, photometry ;
Photometry, UBVRI ; Photometry, SDSS
Keywords: galaxies: dwarf - galaxies: irregular - Local Group -
galaxies: photometry - galaxies: spiral
Abstract:
We present the global optical photometry of 246 galaxies in the Local
Volume Legacy (LVL) survey. The full volume-limited sample consists of
258 nearby (D<11Mpc) galaxies whose absolute B-band
magnitude span a range of -9.6<MB←20.7mag. A composite optical
(UBVR) data set is constructed from observed UBVR and Sloan Digital
Sky Survey ugriz imaging, where the ugriz magnitudes are transformed
into UBVR. We present photometry within three galaxy apertures defined
at UV, optical, and IR wavelengths. Flux comparisons between these
apertures reveal that the traditional optical R25 galaxy apertures do
not fully encompass extended sources. Using the larger IR apertures,
we find colour-colour relationships where later type spiral and
irregular galaxies tend to be bluer than earlier type galaxies. These
data provide the missing optical emission from which future LVL
studies can construct the full panchromatic (UV-optical-IR) spectral
energy distributions.
Description:
The LVL sample consists of 258 of our nearest galaxy neighbours
reflecting a statistically complete, representative sample of the
local Universe. The sample selection and description are detailed in
Dale et al. (2009ApJ...703..517D 2009ApJ...703..517D, Cat. J/ApJ/703/517).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 60 258 General galaxy properties
table2.dat 146 258 Photometry within R25 apertures
table3.dat 146 258 Photometry within the IR apertures of
Dale et al. (2009, Cat. J/ApJ/703/517)
table4.dat 146 258 Photometry within the UV apertures of
Lee et al. (2011, Cat. J/ApJS/192/6)
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See also:
J/ApJ/703/517 : The Spitzer Local Volume Legacy: IR photometry (Dale+, 2009)
J/MNRAS/445/899 : LVL SEDs and physical properties (Cook+, 2014)
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
15 A1 --- n_Name [+] + = denotes where the photometry has been
removed
17- 18 I2 h RAh Right Ascension (J2000)
20- 21 I2 min RAm Right Ascension (J2000)
23- 27 F5.2 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- 45 F5.2 Mpc Dist [0.05/20] Distance from Kennicutt et al. 2008
(J/ApJS/178/247)
47- 48 I2 --- TT [-5/11] Optical morphology from Kennicutt et al.
2008 (J/ApJS/178/247)
50- 53 F4.2 mag E(B-V) [0.01/0.92] Milky Way foreground extinction from
Schlegel et al. (1998ApJ...500..525S 1998ApJ...500..525S)
55- 60 F6.2 mag BMAG [-21/-9]?=- Absolute B band magnitude derived
in this study
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Byte-by-byte Description of file: table[234].dat
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Bytes Format Units Label Explanations
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1- 14 A14 --- Name Galaxy name
15 A1 --- n_Name [+] + = denotes where the photometry has
been removed
17- 23 F7.1 arcsec a [18/]?=- Major axis of elliptical aperture
25- 31 F7.1 arcsec b [8/]?=- Minor axis of elliptical aperture
33- 37 F5.1 deg PA [-90/360]?=- Position angle (East of North)
39- 43 F5.2 mag Umag ?=- Global flux (AB magnitude system) in
the Johnson-Cousin U band
45- 49 F5.2 mag e_Umag ?=- Global flux error on Umag
51- 55 F5.2 mag Bmag ?=- Global flux (AB magnitude system) in
the Johnson-Cousin B band
57- 61 F5.2 mag e_Bmag ?=- Global flux error on Bmag
63- 67 F5.2 mag Vmag ?=- Global flux (AB magnitude system) in
the Johnson-Cousin V band
69- 73 F5.2 mag e_Vmag ?=- Global flux error on Vmag
75- 79 F5.2 mag Rmag ?=- Global flux (AB magnitude system) in
the Johnson-Cousin R band
81- 85 F5.2 mag e_Rmag ?=- Global flux error on Rmag
87 A1 --- l_umag Limit flag on umag
88- 92 F5.2 mag umag ?=- Global flux (AB magnitude system) in
the SDSS u band
94- 98 F5.2 mag e_umag ?=- Global flux error on umag
100-104 F5.2 mag gmag ?=- Global flux (AB magnitude system) in
the SDSS g band
106-110 F5.2 mag e_gmag ?=- Global flux error on gmag
112-116 F5.2 mag rmag ?=- Global flux (AB magnitude system) in
the SDSS r band
118-122 F5.2 mag e_rmag ?=- Global flux error on rmag
124-128 F5.2 mag imag ?=- Global flux (AB magnitude system) in
the SDSS i band
130-134 F5.2 mag e_imag ?=- Global flux error on imag
136-140 F5.2 mag zmag ?=- Global flux (AB magnitude system) in
the SDSS z band
142-146 F5.2 mag e_zmag ?=- Global flux error on zmag
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 04-May-2015