J/A+A/544/A101 GALEX observations of Herschel Reference Survey (Cortese+, 2012)
The GALEX view of the Herschel Reference Survey.
Ultraviolet structural properties of nearby galaxies.
Cortese L., Boissier S., Boselli A., Bendo G.J., Buat V., Davies J.I.,
Eales S., Heinis S., Isaak K.G., Madden S.C.
<Astron. Astrophys., 544, A101 (2012)>
=2012A&A...544A.101C 2012A&A...544A.101C
ADC_Keywords: Galaxies, nearby ; Photometry, ultraviolet ; Photometry, SDSS
Keywords: catalogs - galaxies: evolution - galaxies: photometry -
galaxies: structure - ultraviolet: galaxies
Abstract:
We present GALEX far-ultraviolet (FUV) and near-ultraviolet (NUV) as
well as SDSS g, r, i photometry and structural parameters for the
Herschel Reference Survey, a magnitude-, volume-limited sample of
nearby galaxies in different environments. We use this unique dataset
to investigate the ultraviolet (UV) structural scaling relations of
nearby galaxies and to determine how the properties of the UV disk
vary with atomic hydrogen content and environment.
Description:
In order to obtain homogeneous near-ultraviolet
(NUV; λ=2316Å: Δλ=1069Å) and far-ultraviolet
(FUV; λ=1539Å: Δλ=442Å) data with an
exposure time of at least ∼1.5ks (corresponding to a surface
brightness limit of ∼28.5mag/arcsec2) for all the galaxies in the
HRS observable by GALEX, we were awarded 112.5ks as part of the
legacy GI Cycle 6 proposal Completing the GALEX coverage of the
Herschel Reference Survey (P.I. L. Cortese). Unfortunately, before the
start of Cycle 6 observations, the FUV detector experienced an
over-current condition and shut down, and GALEX officially moved to
NUV-only operations. In addition, subsequent problems to the NUV
detector and budget cuts on the mission did not allow GALEX to
complete the GI and MIS surveys as planned.
We combine the GALEX data with g, r and i band images for the 313 HRS
galaxies included in the Sloan Digital Sky Survey DR7 (SDSS-DR7,
Abazajian et al., 2009ApJS..182..543A 2009ApJS..182..543A) footprint.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table6.dat 159 323 General properties of the Herschel Reference Survey
(HRS) sample and of the GALEX data used in the paper
table7.dat 148 323 Integrated FUV, NUV, g, r and i magnitudes and
stellar masses for the HRS
table8.dat 93 323 FUV, NUV, g, r and i effective and isophotal
radii and effective surface brigthnesses for the HRS
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See also:
J/PASP/122/261 : Herschel Reference Survey Sample (Boselli+, 2010)
Byte-by-byte Description of file: table6.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- HRS Herschel Reference Survey number (Boselli et al.
2010, Cat. J/PASP/122/261)
5- 11 A7 --- CGCG CGCG designation (Zwicky et al. 1961,
Cat. VII/29)
13- 16 I4 --- VCC ?=- VCC number (Binggeli et al. 1985,
Cat. J/AJ/90/1681)
18- 21 I4 --- UGC ?=- UGC number (Nilson 1973, Cat. VII/26)
23- 26 I4 --- NGC ?=- NGC number (Dreyer 1888. Cat. VII/118)
28- 31 I4 --- IC ?=- IC number (Dreyer 1895. Cat. VII/118)
33- 34 I2 h RAh Right ascension (J2000)
36- 37 I2 min RAm Right ascension (J2000)
39- 43 F5.2 s RAs Right ascension (J2000)
45 A1 --- DE- Declination sign (J2000)
46- 47 I2 deg DEd Declination (J2000)
49- 50 I2 arcmin DEm Declination (J2000)
52- 55 F4.1 arcsec DEs Declination (J2000)
57- 58 I2 --- TT Morphological type (1)
60- 64 F5.2 arcmin D25 Optical diameter D25 (2)
66- 71 F6.4 mag E(B-V) B-V colour excess based on the maps of Schlegel
et al. (1998ApJ...500..525S 1998ApJ...500..525S)
73- 78 F6.2 Mpc Dist Distance (3)
80-110 A31 --- NNUV Name of the NUV tile
112-119 F8.2 s tNUV ?=- Exposure time in NUV filter
121-149 A29 --- NFUV Name of the FUV tile
150-157 F8.2 s tFUV ?=- Exposure time in FUV filter
159 A1 --- Note [SEFN] Reason of exclusion (4)
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Note (1): Morphological type as follows:
-2 = dE/dS0
0 = E-E/S0
1 = S0
2 = S0a-S0/Sa
3 = Sa
4 = Sab
5 = Sb
6 = Sbc
7 = Sc
8 = Scd
9 = Sd
10 = Sdm-Sd/Sm
11 = Sm
12 = Im
13 = Pec
14 = S/BCD
15 = Sm/BCD
16 = Im/BCD
17 = BCD
Note (2): optical diameter as given in Boselli et al. (2010, Cat.
J/PASP/122/261). Note that for HRS295 we adopted the RC3 value instead
of that given by Boselli et al. (2010, Cat. J/PASP/122/261), since it
is much more representative of the "real" optical extent of the galaxy.
Note (3): As discussed in Boselli et al. (2010, Cat. J/PASP/122/261), we
fixed the distances for galaxies belonging to the Virgo cluster (i.e.,
23Mpc for the Virgo B cloud and 17Mpc for all the other clouds;
Gavazzi et al. 1999MNRAS.304..595G 1999MNRAS.304..595G), while for the rest of the sample
distances have been estimated from their recessional velocities
assuming a Hubble constant H0=70km/s/Mpc.
Note (4): Note indicating whether a galaxy has been excluded because GALEX
observations were not possible due to the following reasons:
S = bright stars
E = the target was too close to the edge of the field
F = the frame was too shallow to be used for reliable photometry
N = simply the galaxy was not observed
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Byte-by-byte Description of file: table7.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- HRS Herschel Reference Survey number
5- 8 F4.2 deg ell Ellipticity
10- 12 I3 deg PA [-90/90] Position angle, measured
counterclockwise from the North) of the
ellipses used for the photometry
14- 19 F6.3 mag FUVasy ?=- Asymptotic GALEX FUV magnitude
21- 25 F5.3 mag e_FUVasy ?=- rms uncertainty on FUVasy
27- 32 F6.3 mag FUVD25 ?=- FUV magnitude within the optical diameter
34- 38 F5.3 mag e_FUVD25 ?=- rms uncertainty on FUVD25
40- 45 F6.3 mag NUVasy ?=- Asymptotic GALEX NUV magnitude
47- 51 F5.3 mag e_NUVasy ?=- rms uncertainty on NUVasy
53- 58 F6.3 mag NUVD25 ?=- NUV magnitude within the optical diameter
60- 64 F5.3 mag e_NUVD25 ?=- rms uncertainty on NUVD25
66- 71 F6.3 mag gasy ?=- Asymptotic SDSS g magnitude
73- 77 F5.3 mag e_gasy ?=- rms uncertainty on gasy
79- 84 F6.3 mag gD25 ?=- g magnitude within the optical diameter
86- 90 F5.3 mag e_gD25 ?=- rms uncertainty on gD25
92- 97 F6.3 mag rasy ?=- Asymptotic SDSS r magnitude
99-103 F5.3 mag e_rasy ?=- rms uncertainty on rasy
105-110 F6.3 mag rD25 ?=- r magnitude within the optical diameter
112-116 F5.3 mag e_rD25 ?=- rms uncertainty on rD25
118-123 F6.3 mag iasy ?=- Asymptotic SDSS i magnitude
125-129 F5.3 mag e_iasy ?=- rms uncertainty on iasy
131-136 F6.3 mag iD25 ?=- i magnitude within the optical diameter
138-142 F5.3 mag e_iD25 ?=- rms uncertainty on iD25
144-148 F5.2 [Msun] logM* ?=- Stellar masses determined from i-band
luminosities (5)
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Note (5): Stellar masses determined from i-band luminosities Li using the g-i
colour-dependent stellar mass-to-light ratio relation from Zibetti et al.
(2009MNRAS.400.1181Z 2009MNRAS.400.1181Z), assuming a Chabrier (2003PASP..115..763C 2003PASP..115..763C) initial
mass function (IMF): log(M*/Li)=-0.963+1.032*(g-i). The i luminosity and
g-i colour have been corrected for Galactic extinction assuming a Cardelli
et al. (1989ApJ...345..245C 1989ApJ...345..245C) extinction law with A(V)/E(B-V)=3.1: i.e.,
A(λ)/E(B-V)=3.793 and 2.086 for g and i, respectively.
The typical uncertainty in this estimate is ∼0.15dex.
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Byte-by-byte Description of file: table8.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- HRS Herschel Reference Survey number
5- 9 F5.1 arcsec Re(FUV) ?=- Effective radius in FUV
11- 15 F5.1 arcsec Riso(FUV) ?=- Isophotal radius at 28mag/arcsec2
level in FUV
17- 21 F5.2 mag/arcsec2 FUV ?=- Effective surface brightness in FUV
23- 27 F5.1 arcsec Re(NUV) ?=- Effective radius in NUV
29- 33 F5.1 arcsec Riso(NUV) ?=- Isophotal radius at 28mag/arcsec2
level in NUV
35- 39 F5.2 mag/arcsec2 NUV ?=- Effective surface brightness in NUV
41- 45 F5.1 arcsec Re(g) ?=- Effective radius in g band
47- 51 F5.1 arcsec Riso(g) ?=- Isophotal radius at 24.5mag/arcsec2
level in g band
53- 57 F5.2 mag/arcsec2 g ?=- Effective surface brightness in g band
59- 63 F5.1 arcsec Re(r) ?=- Effective radius in r band
65- 69 F5.1 arcsec Riso(r) ?=- Isophotal radius at 24mag/arcsec2
level in r band
71- 75 F5.2 mag/arcsec2 r ?=- Effective surface brightness in r band
77- 81 F5.1 arcsec Re(i) ?=- Effective radius in i band
83- 87 F5.1 arcsec Riso(i) ?=- Isophotal radius at 23.5mag/arcsec2
level in i band
89- 93 F5.2 mag/arcsec2 i ?=- Effective surface brightness in i band
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 15-Oct-2012