J/MNRAS/446/3749 SDSS nearby galaxies morphologies (Yoshino+, 2015)
Box/peanut and bar structures in edge-on and face-on SDSS nearby galaxies.
I. Catalogue.
Yoshino A., Yamauchi C.
<Mon. Not. R. Astron. Soc. 446, 3749 (2015)>
=2015MNRAS.446.3749Y 2015MNRAS.446.3749Y
ADC_Keywords: Galaxies, nearby ; Photometry, SDSS ; Morphology
Keywords: Galaxies: classification - fundamental parameters - statistics
Abstract:
We investigate box/peanut and bar structures in image data of edge-on
and face-on nearby galaxies taken from the Sloan Digital Sky Survey
(SDSS) to present catalogues containing the surface brightness
parameters and the morphology classification. About 1700 edge-on
galaxies and 2600 face-on galaxies are selected from SDSS DR7 in the
g, r and i-bands. The images of each galaxy are fitted with the model
of two-dimensional surface brightness of the Sersic bulge and
exponential disk. After removing some irregular data, the box/peanut,
bar and other structures are easily distinguished by eye using
residual (observed minus model) images. We find 292 box/peanut
structures in the 1329 edge-on samples and 630 bar structures in 1890
face-on samples in the i-band, after removing some irregular data. The
fraction of box/peanut galaxies is about 22 per cent against the
edge-on samples, and that of bar galaxies is about 33 per cent (about
50 per cent if 629 elliptical galaxies are removed) against the
face-on samples. Furthermore the strengths of the box/peanuts and bars
are evaluated as strong, standard or weak. We find that the strength
increases slightly with increasing B/T (bulge-to-total flux ratio),
and that the fraction of box/peanuts is generally about a half of that
of bars, irrespective of the strength and B/T. Our result supports the
idea that a box/peanut is a bar seen edge-on.
Description:
These catalogues are intended to study statistically Box/Peanut or Bar
structures in edge-on or face-on nearby galaxies, containing values of
surface brightness parameters of model galaxy, coordinate, redshift,
morphology and matched PGC number for edge-on or face-on nearby
galaxies in g, r and i-band selected from SDSS DR7.
table1[gri].dat are the catalogues for edge-on galaxies in g, r and
i-band, respectively. table2[gri].dat are those for face-on galaxies.
table3[gri].dat contain only Box/Peanut galaxies extracted from
table1[gri].dat. table4[gri].dat contain only Barred galaxies
extracted from table2[gri].dat.
Description of files:
"EON_ID" is an original identifier for the edge-on galaxies like as
"SDSS-g-eon-XXXX", where XXXX is the serial number.
"FON_ID" is an original identifier for the face-on galaxies like as
"SDSS-g-fon-XXXX", where XXXX is the serial number.
"BOX_ID" is an original identifier for the Box/Peanut galaxies like as
"SDSS-g-box-XXXX", where XXXX is the serial number.
"BAR_ID" is an original identifier for the barred galaxies like as
"SDSS-g-bar-XXXX", where XXXX is the serial number.
"SDSS_ID" is another identifier according to recommended format by
SDSS project like as "SDSS JHHMMSS.SS+DDMMSS.S".
"objid", "RA", "Dec" and "redshift" are object ID, Right Ascension,
Declination and redshift, respectively, quoted directly from SDSS DR7.
The catalogues are sorted by the "objid".
"mueB", "b/a_B", "reB" and "Sersic" are values of effective
intensity (flux), axial ratio, effective radius and index of Sersic,
respectively, for Sersic law bulge model.
"mu0D", "b/a_D" a,d "rsD" are values of central intensity, axial
ratio and scale length, respectively, for exponential law disk model.
"B" and "D" are the integrated flux for bulge and disk, respectively,
and "B/T" is the ratio.
These flux are shown in magnitude unit using SDSS asinh magnitude
system.
"chi2" is a value of reduced chi-square for the model fitting.
"morph" is a mark of morphology in this catalogue estimated by eye. It
is classified as follows. bx+:Strong Box/Peanut. bx:Standard
Box/Peanut. bx-:Weak Box/Peanut. br+:Strong bar. br:Standard bar.
br-:Weak bar. nm:Normal disk galaxy. el:Elliptical galaxy.
ir:Irregular galaxy. ov:Oval. rg:Ring. mg:Merger.
"H_type" is Hubble type classification transformed from the B/T. It is
defined as follows. Sd:B/T≤0.05. Sc:0.05<B/T≤0.1. Sbc:0.1<B/T≤0.2.
Sb:0.2<B/T≤0.3. Sab:0.3<B/T≤0.4. Sa/E(Sa or earlier):0.4<B/T.
"PGC" is a matched PGC number (Paturel et al., 2003A&A...412...45P 2003A&A...412...45P,
Cat. VII/237), if exist within 5 arcsec.
"SDSSPGCd" is the distance between SDSS object and PGC object.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1g.dat 210 1253 Edge-on galaxies in g-band (first part of table A1)
table1r.dat 210 1312 Edge-on galaxies in i-band (second part of table A1)
table1i.dat 210 1329 Edge-on galaxies in r-band (third part of table A1)
table2g.dat 210 2042 Face-on galaxies in g-band (first part of table A2)
table2r.dat 210 2020 Face-on galaxies in r-band (second part of table A2)
table2i.dat 210 1890 Face-on galaxies in i-band (third part of table A2)
table3g.dat 210 228 Box/peanut galaxies in g-band
(first part of table A3)
table3r.dat 210 283 Box/peanut galaxies in i-band
(second part of table A3)
table3i.dat 210 292 Box/peanut galaxies in r-band
(third part of table A3)
table4g.dat 210 732 Barred galaxies in g-band (first part of table A4)
table4r.dat 210 644 Barred galaxies in i-band (second part of table A4)
table4i.dat 210 630 Barred galaxies in r-band (third part of table A4)
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See also:
II/294 : The SDSS Photometric Catalog, Release 7 (Adelman-McCarthy+, 2009)
VII/237 : HYPERLEDA. I. Catalog of galaxies (Paturel+, 2003)
Byte-by-byte Description of file: table1g.dat table1i.dat table1r.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 5 A5 --- --- [SDSS-]
6- 15 A10 --- EON Object ID for this catalogue,
[gri]-eon-NNNN (EON_ID)
17- 20 A4 --- --- [SDSS]
22- 40 A19 --- SDSS Object ID in SDSS recommended format (SDSS_ID)
42- 59 I18 --- objid Object ID directly taken from SDSS DR7 (objid)
61- 72 F12.8 deg RAdeg Right Ascension J2000.0 (RA)
74- 85 F12.8 deg DEdeg Declination J2000.0 (Dec)
87- 98 E12.5 --- z [-0.0002/1.02] Redshift (redshift)
100-104 F5.2 mag/arcsec2 mueB Bulge effective intensity (flux) (mueB)
106-109 F4.2 --- b/aB [0/2] Bulge axial ratio (b/a_B)
111-115 F5.2 arcsec reB Bulge effective radius (reB)
117-120 F4.2 --- nB [0.5/1] Bulge Sersic law index (Sersic)
122-126 F5.2 mag/arcsec2 mu0D Disk central intensity (flux) (mu0D)
128-131 F4.2 --- b/aD [0/1] Disk axial ratio (b/a_D)
133-137 F5.2 arcsec rsD Disk scale length (rsD)
139-143 F5.2 mag mB Bulge integrated flux (m_B)
145-149 F5.2 mag mD Disk integrated flux (m_D)
151-155 F5.2 mag mT Total integrated flux (m_T)
157-164 E8.3 --- B/T [0/1] Bulge-to-total integrated flux ratio
166-169 F4.2 --- chi2 [0.4/9.99] Reduced chi-square (chi2)
171-177 A7 --- Morph Morphology estimated by eye (morph) (G1)
179-182 A4 --- MType Hubble type transformed from the B/T (H_type)
184-190 I7 --- PGC ?=0 PGC galaxies catalogue number (G2)
192-194 F3.1 arcsec dSP [0/5]? Distance between SDSS and PGC
(SDSSPGCd)
196-200 A5 --- --- [SDSS-]
201-210 A10 --- BOX Object ID for Box/peanut galaxies in table3
[gri]-box-NNNN (BOX_ID)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table2g.dat table2i.dat table2r.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 5 A5 --- --- [SDSS-]
6- 15 A10 --- FON Object ID for this catalogue
[gri]-fon-NNNN (FON_ID)
17- 20 A4 --- --- [SDSS]
22- 40 A19 --- SDSS Object ID in SDSS recommended format (SDSS_ID)
42- 59 I18 --- objid Object ID directly taken from SDSS DR7 (objid)
61- 72 F12.8 deg RAdeg Right Ascension J2000.0 (RA)
74- 85 F12.8 deg DEdeg Declination J2000.0 (Dec)
87- 98 E12.5 --- z [-0.0002/0.25] Redshift (redshift)
100-104 F5.2 mag/arcsec2 mueB Bulge effective intensity (flux) (mueB)
106-109 F4.2 --- b/aB [0/2] Bulge axial ratio (b/a_B)
111-115 F5.2 arcsec reB Bulge effective radius (reB)
117-120 F4.2 --- nB [0.5/1] Bulge Sersic law index (Sersic)
122-126 F5.2 mag/arcsec2 mu0D Disk central intensity (flux) (mu0D)
128-131 F4.2 --- b/aD [0/2] Disk axial ratio (b/a_D)
133-137 F5.2 arcsec rsD Disk scale length (rsD)
139-143 F5.2 mag mB Bulge integrated flux (m_B)
145-149 F5.2 mag mD Disk integrated flux (m_D)
151-155 F5.2 mag mT Total integrated flux (m_T)
157-164 E8.3 --- B/T [0/1] Bulge-to-total integrated flux ratio
166-169 F4.2 --- chi2 [0.4/9.99] Reduced chi-square (chi2)
171-177 A7 --- Morph Morphology estimated by eye (morph) (G1)
179-182 A4 --- MType Hubble type transformed from the B/T (H_type)
184-190 I7 --- PGC ?=0 PGC galaxies catalogue number (G2)
192-194 F3.1 arcsec dSP [0/5]? Distance between SDSS and PGC
(SDSSPGCd)
196-200 A5 --- --- [SDSS-]
201-210 A10 --- BAR Object ID barred galaxies in table4
SDSS-[gri]-bar-NNNN (BAR_ID)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table3g.dat table3i.dat table3r.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 5 A5 --- --- [SDSS-]
6- 15 A10 --- BOX Object ID for this catalogue
[gri]-box-NNNN (BOX_ID)
17- 21 A5 --- --- [SDSS-]
22- 31 A10 --- EON Object ID for Table1 (EON_ID)
33- 36 A4 --- --- [SDSS]
38- 56 A19 --- SDSS Object ID in SDSS recommended format (SDSS_ID)
58- 75 I18 --- objid Object ID directly taken from SDSS DR7 (objid)
77- 88 F12.8 deg RAdeg Right Ascension J2000.0 (RA)
90-101 F12.8 deg DEdeg Declination J2000.0 (Dec)
103-114 E12.5 --- z [-0.0002/0.20] Redshift (redshift)
116-120 F5.2 mag/arcsec2 mueB Bulge effective intensity (flux) (mueB)
122-125 F4.2 --- b/aB [0/2] Bulge axial ratio (b/a_B)
127-131 F5.2 arcsec reB Bulge effective radius (reB)
133-136 F4.2 --- nB [0.5/1] Bulge Sersic law index (Sersic)
138-142 F5.2 mag/arcsec2 mu0D Disk central intensity (flux) (mu0D)
144-147 F4.2 --- b/aD [0/1] Disk axial ratio (b/a_D)
149-153 F5.2 arcsec rsD Disk scale length (rsD)
155-159 F5.2 mag mB Bulge integrated flux (m_B)
161-165 F5.2 mag mD Disk integrated flux (m_D)
167-171 F5.2 mag mT Total integrated flux (m_T)
173-180 E8.3 --- B/T [0/1] Bulge-to-total integrated flux ratio
182-185 F4.2 --- chi2 [0.4/9.99] Reduced chi-square (chi2)
187-193 A7 --- Morph Morphology estimated by eye (morph) (G1)
195-198 A4 --- MType Hubble type transformed from the B/T (H_type)
200-206 I7 --- PGC ?=0 PGC galaxies catalogue number (G2)
208-210 F3.1 arcsec dSP [0/5]? Distance between SDSS and PGC
(SDSSPGCd)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table4g.dat table4i.dat table4r.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 5 A5 --- --- [SDSS-]
6- 15 A10 --- BAR Object ID for this catalogue
[gri]-bar-NNNN (BAR_ID)
17- 21 A5 --- --- [SDSS-]
22- 31 A10 --- FON Object ID for Table2 (FON_ID)
33- 36 A4 --- --- [SDSS]
38- 56 A19 --- SDSS Object ID in SDSS recommended format (SDSS_ID)
58- 75 I18 --- objid Object ID directly taken from SDSS DR7 (objid)
77- 88 F12.8 deg RAdeg Right Ascension J2000.0 (RA)
90-101 F12.8 deg DEdeg Declination J2000.0 (Dec)
103-114 E12.5 --- z [-0.0002/0.20] Redshift (redshift)
116-120 F5.2 mag/arcsec2 mueB Bulge effective intensity (flux) (mueB)
122-125 F4.2 --- b/aB [0/2] Bulge axial ratio (b/a_B)
127-131 F5.2 arcsec reB Bulge effective radius (reB)
133-136 F4.2 --- nB [0.5/1] Bulge Sersic law index (Sersic)
138-142 F5.2 mag/arcsec2 mu0D Disk central intensity (flux) (mu0D)
144-147 F4.2 --- b/aD [0/2] Disk axial ratio (b/a_D)
149-153 F5.2 arcsec rsD Disk scale length (rsD)
155-159 F5.2 mag mB Bulge integrated flux (m_B)
161-165 F5.2 mag mD Disk integrated flux (m_D)
167-171 F5.2 mag mT Total integrated flux (m_T)
173-180 E8.3 --- B/T [0/1] Bulge-to-total integrated flux ratio
182-185 F4.2 --- chi2 [0.4/9.99] Reduced chi-square (chi2)
187-193 A7 --- Morph Morphology estimated by eye (morph) (G1)
195-198 A4 --- MType Hubble type transformed from the B/T (H_type)
200-206 I7 --- PGC ?=0 PGC galaxies catalogue number (G2)
208-210 F3.1 arcsec dSP [0/5]? Distance between SDSS and PGC
(SDSSPGCd)
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Global notes:
Note (G1): Morphology estimated by eye code:
bx+ = Strong Box/Peanut
bx = Standard Box/Peanut
bx- = Weak Box/Peanut
br+ = Strong bar
br = Standard bar
br- = Weak bar
nm = Normal disk galaxy
el = Elliptical galaxy
ir = Irregular galaxy
ov = Oval
rg = Ring
mg = Merger
Note (G2): When PGC galaxy is not found within 5 arcsec, 0 is filled for
PGC and and dSP.
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Acknowledgements:
Akira Yoshino, yoshino.akira(at)jaxa.jp
History:
* 19-Jan-2015: Documentation prepared by Akira Yoshino
(End) Akira Yoshino [ISAS/JAXA], Patricia Vannier [CDS] 20-Jan-2015