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J/A+AS/126/67 Coma and Perseus clusters galaxies (Andreon+ 1997)
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Morphological classification and structural parameter of galaxies in the
Coma and Perseus clusters
Andreon S., Davoust E., Poulain P.
<Astron. Astrophys. Suppl. Ser. 126, 67 (1997)>
=1997A&AS..126...67A (SIMBAD/NED BibCode)
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ADC_Keywords: Galaxy catalogs ; Morphology ; Photometry, surface
Keywords: galaxies: clusters: individual: Coma (Abell 1656) -
individual: Perseus (Abell 426) -
galaxies: elliptical and lenticular, cD -
galaxies: fundamental parameters
Description:
We present the results of an isophotal shape analysis of galaxies in
the Coma and Perseus clusters. These data, together with those of two
previous papers, provide two complete samples of galaxies with
reliable Hubble types in rich clusters: 1) all galaxies brighter than
m_b_=16.5 falling within one degree (=2.3Mpc) from the center of the
Coma cluster (187 galaxies), 2) all galaxies brighter than
m_(Zwicky)=15.7 in a region of 5 deg 3' times 5 deg 27' around the
center of the Perseus cluster (139 galaxies). These two complete
samples cover 5 orders of magnitude in galaxy density and span areas
of 91 and 17Mpc^2^, clustercentric radii up to 2.3 and 6.4Mpc, for
Perseus and Coma respectively. They will be used in subsequent papers
to study the dependence of galaxy types on cluster environment and as
reference samples in comparisons with distant clusters.
See also:
J/A+AS/116/429 : Classification of Coma early galaxies. (Andreon+ 1996)
(Paper I)
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1 68 51 Observing log of Perseus galaxies
table2 91 35 Galaxies classified as S from visual inspection
of the plates OCA2842 and OCA2849 (all but two
not presented in Paper I)
table3 107 37 Morphological description of spiral galaxies
in Perseus
table4 99 28 Morphological description of early-type
galaxies in Coma
table5 102 29 Morphological description of early-type
galaxies in Perseus
tables.tex 170 514 LaTeX version of the tables
comafig.ps 102 4078 Galaxies in the Coma sample
persfig.ps 102 3106 Galaxies of the Perseus sample
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Byte-by-byte Description of file: table1
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Bytes Format Units Label Explanations
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1- 8 A8 --- Name Name
10- 14 A5 --- Run Observing run (1)
16 A1 --- Filt Filter
18- 19 I2 min Exp ? Exposure time
21- 23 F3.1 arcsec FWHM ? Seeing
25- 68 A44 --- Notes Notes
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Note (1): Run indicates:
feb93: CCD Thompson 1024x1024, pixel size=0.24
dec93: CCD Thompson 1024x1024, pixel size=0.48 (0.24 2x2 binned)
feb94: CCD Thompson 1024x1024, pixel size=0.24 (the observations in
the x filter were done with an unknown filter, because of a
mechanical fault).
dec94: CCD Tektronics 1024x1024, pixel size=0.30
feb95: CCD Tektronics 1024x1024, pixel size=0.30
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Byte-by-byte Description of file: table2
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Bytes Format Units Label Explanations
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1- 4 I4 --- GMP GMP (Cat. <VII/42>) galaxy number
6- 9 I4 --- GMPa Abriged galaxy number
11- 29 A19 --- Char Characteristics
32- 50 A19 --- Obs Other observations (1)
53- 91 A39 --- Note Notes (1)
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Note (1):
BO= Butcher & Oemler (1985ApJS...57..665B)
GavI= Gavazzi, Garilli & Boselli (1990A&AS...83..399G )
GavIII= Gavazzi & Randone (1994), Cat. <J/A+AS/107/285>
GavIV= Gavazzi, Boselli & Carrasco (1995), Cat. <J/A+AS/112/257>
D80= Dressler (1980), Cat. <VII/174>
kp1608= KPNO photographic plate (see Paper I)
run 7= CCD observations in March 1993 (see Paper I)
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Byte-by-byte Description of file: table3
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Bytes Format Units Label Explanations
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1- 11 A11 --- Name Name
13- 28 A16 --- Palomar Appearance on the Digitized Palomar Sky Survey
31- 40 A10 --- OCA2977 Appearance on plate OCA #2977
42- 67 A26 --- n_OCA2977 Note on OCA2977
69- 95 A27 --- CCD Appearance on CCD image
97-101 A5 --- Run Run number
103 A1 --- Notes [*] Notes (1)
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Note (1): For Zw 541-3, embedded in the halo of a bright star,
out of redshift limits
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Byte-by-byte Description of file: table4
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Bytes Format Units Label Explanations
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1- 5 A5 --- GMPa Number in the abridged version of GMP
7- 10 I4 --- GMP Number in the unabridged version of GMP
catalogue <VII/42>
12- 14 I3 --- Dress ? Number in Dressler's catalogue
(Dressler 1980, <VII/174>).
16- 23 A8 --- Name Usual designation, such as NGC,
IC (Dreyer 1888, <VII/118>), and
RB (Rood & Baum, 1967AJ.....72..398R)
numbers.
25- 29 F5.2 mag Vmag ? Asymptotic magnitude, in V (Johnson)
31- 34 F4.2 [arcsec] log(Reff) ? Logarithm of the effective radius
36- 39 F4.2 [arcsec] log(a) ? Logarithm of the semi major axis of the
effective isophote
41- 45 F5.2 mag/arcmin2 SuBr ? Mean surface brightness inside the
effective isophote, in V magnitude
47- 48 A2 --- Diskp Photometric evidence for a disk (1)
50- 53 F4.2 --- b/a Typical axis ratio (2)
55- 56 A2 --- n_b/a Location where axis ratio was estimated (3)
58- 61 F4.1 % e4 Typical e_4_ parameter (4)
63- 64 A2 --- n_e4 Location where e_4_ was estimated (3)
66- 69 F4.2 --- b/ae Axis ratio in the envelope, i.e. at the
isophote {mu}_V_=24.85mag/arcsec^2^.
71- 72 I2 deg Ampli Amplitude of isophotal twist in the range
of reliable measurements
74- 77 A4 --- Bar Detection of a bar (5)
79- 82 A4 --- Disk Detection and classification of a disk (6)
84- 87 A4 --- Spiral Detection of a spiral pattern (7)
89- 91 A3 --- Envelope Classification of an envelope (8)
93- 97 A5 --- MType Our morphological classification (9)
99 A1 --- Note [*] An asterisk refers to a note (10)
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Note (1): st: strong
cl: clear
ft: faint
no: none.
Note (2): Typical value, either its minimum value, if clearly defined, or its
value at the effective isophote otherwise.
Note (3): ex: at its extremum
re: at the effective isophote
co: if the value is the same at both locations.
Note (4): Typical value, either its extremum value, if clearly defined, or its
value at the effective isophote otherwise. The estimates are in %.
Note (5): bar: bar seen
bar?: bar suspected
-no: no bar seen.
Note (6): emDi: embedded disk
miDi: mixed disk
exDi: extended disk
-?Di: detected but unclassified disk
-no-: no disk seen.
Note (7): spiP: spiral pattern seen
spiP?: spiral pattern suspected
-no-: no spiral pattern seen.
Note (8): spH: spheroidal halo
thD: thick disk
exD: extended disk
pec: peculiar envelope
-?-: unclassified envelope.
Note (9): boE: boxy E
unE: undetermined E
diE: disky E
SA0, SAB0, SB0, Sa, etc., S...: spiral of unknown stage.
Note (10): Individual notes
0552: dust along the major axis. Type given in Paper I confirmed.
0718: two bumps on the major axis profile. Inner ring and lens.
Type given in Paper I confirmed.
0750R: image of run 9 (see Paper I).
0750: 30 degree twist at r ~10 arcsec on the V image. same twist in R,
but image not deep enough for full confirmation. Type given in
Paper I confirmed.
0754: type given in Paper I fully confirmed.
0828: E boxy outside r_e_ and possibly disky inside. In Paper I it is
classified diE because the boxiness of the outer region is not
detected with certainty, partly because of the presence of a
companion galaxy at 15 arcsec in the minor axis direction.
0857: the bar suspected in Paper I is not detected in our better images.
0908: slightly boxy isophotes out to r_e_, then slightly disky isophotes.
Uncertain detailed classification.
0967: focus problems made the PSF slightly elongated in the NS direction
and galaxy data inside 3 arcsec not usable.
1109: the bar suspected in Paper I is detected.
1154: asymmetric with respect to its major axis.
1432: classified SA0/a by morphologists, probably because of the low
contrast spiP.
1564: ellipticity and e_4_ profile unusual for a lenticular galaxy.
It seems to be asymmetric.
1594: the better data with respect to Paper I allow us to classify it
elliptical.
1625: the bar suspected in Paper I is detected.
1844: isophote twist toward GMP 1852. Type given in Paper I confirmed.
1852: isophote twist opposite to GMP 1844, bar suspected but nearby star
slightly elongated in the same direction. Type given in Paper I
confirmed.
1925: large isophote twist at low SuBr.
2085: rich in globular clusters. The expression "globular cluster" here
and hereafter does not imply a group of dynamically bound stars,
but a clump of light.. The better data with respect to Paper I
allow us to classify it elliptical.
2109: focus problems made the PSF slightly elongated in a direction
orthogonal to the galaxy major axis. Data inside 4 arcsec are not
usable. Also classified unE with CFH data of Paper I.
2134: rich in globular clusters. Its intensity profile obeys the r^-1.44^
law from 1 arcsec out to 60 arcsec, putting this galaxy in the D
class following Schombert (1987IAUS..127..383S) and
Tonry (1987IAUS..127...89T). Classified as unE in Paper I from a
slightly shallower image.
2283: the analysis is made difficult by the crowded field and a nearby
saturated star.
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Byte-by-byte Description of file: table5
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Bytes Format Units Label Explanations
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1- 7 A7 --- Zw Zwicky name (Cat. <VII/49>)
9- 16 A8 --- Name Usual designation, such as NGC,
UGC (Nilson 1976, <VII/26>),
T (Tifft 1978ApJ...222...54T),
BGP (Bucknell et al. 1979MNRAS.188..579B),
CR (Chincarini & Rood 1971ApJ...168..321C)
18- 26 A9 --- ObsMat Flag for filter or observational material.
28- 32 F5.2 mag mag ? Asymptotic magnitude.
33 A1 --- n_mag [n] Note on mag (1)
35- 38 F4.2 [arcsec] log(Reff) ? Logarithm of the effective radius
40- 43 F4.2 [arcsec] log(a) ? Logarithm of the semi major axis of the
effective isophote
45- 49 F5.2 mag/arcmin2 SuBr ? Mean surface brightness inside the
effective isophote
50 A1 --- n_SuBr [n] Note on SuBr (1)
52- 53 A2 --- Diskp Photometric evidence for a disk (2)
55- 58 F4.2 --- b/a ? Typical axis ratio (3)
60- 61 A2 --- n_b/a Location where axis ratio was estimated (4)
63- 66 F4.1 % e4 ? Typical e_4_ parameter (5)
68- 69 A2 --- n_e4 Location where e_4_ was estimated (4)
71- 74 F4.2 --- b/ae ? Axis ratio in the envelope, i.e. at the
isophote V_=24.85 or R=24mag/arcsec^2^.
75 A1 --- n_b/ae [n:] Note on b/ae (1)
77- 78 I2 deg Ampli ? Amplitude of isophotal twist in the range
of reliable measurements
79 A1 --- u_Ampli Uncertainty flag on Ampli
80- 83 A4 --- Bar Detection of a bar (6)
84- 87 A4 --- Disk Detection and classification of a disk (7)
89- 92 A4 --- Spiral Detection of a spiral pattern (8)
94- 96 A3 --- Envelope Classification of an envelope (9)
98-100 A3 --- MType Our morphological classification (10)
102 A1 --- Note [*] An asterisk refers to a note (11)
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Note (1): A n means that the parameter has not been computed because the night
was not photometric, or because of the pan-chromaticity of the plate.
: is an uncertainty flag
Note (2): st: strong
cl: clear
ft: faint
no: none.
Note (3): Typical value, either its minimum value, if clearly defined, or its
value at the effective isophote otherwise.
Note (4): ex: at its extremum
re: at the effective isophote
co: if the value is the same at both locations.
Note (5): Typical value, either its extremum value, if clearly defined, or its
value at the effective isophote otherwise. The estimates are in %.
Note (6): bar: bar seen
bar?: bar suspected
-no: no bar seen.
Note (7): emDi: embedded disk
miDi: mixed disk
exDi: extended disk
-?Di: detected but unclassified disk
-no-: no disk seen.
Note (8): spiP: spiral pattern seen
spiP?: spiral pattern suspected
-no-: no spiral pattern seen.
Note (9): spH: spheroidal halo
thD: thick disk
exD: extended disk
pec: peculiar envelope
-?-: unclassified envelope.
Note (10): boE: boxy E
unE: undetermined E
diE: disky E
SA0, SAB0, SB0, Sa, etc., S...: spiral of unknown stage.
Note (11): Individual notes
T40: the identification of Tiff 40 is doubtful. The observed galaxy is
the nearest one to the Tiff 40 coordinates. A brighter (spiral)
galaxy is 4 arcmin SE, which is more likely Tiff 40, if we believe
Kent & Sargent's (1983AJ.....88..697K) classification (S).
540-32: companion of NGC 1177, roundish.
540-33: peanut shaped SA0.
540-41: face on.
540-46: the small field of view did not allow us to image the whole envelope
540-57: there is a bump on the major axis SuBr profile at V=23 mag arcsec^2^
540-73: this galaxy is 19 arcsec from a very bright star, preventing the
detailed structural analysis. However, bulge and disk are clearly
visually detected as a change of axis ratio and as a bump on the
major axis profile, leading to our estimated type. The galaxy is
edge-on.
540-74: our morphological type fully confirms that of
Poulain, Nieto & Davoust (1992A&AS...95..129P).
540-76: strong, but smooth, dust lane on major axis. A second faint dust
lane is present with an inclination of about 10 degrees with
respect to the galaxy major axis 10 arcsec Southward.
540-81: dust just in the inner part of this galaxy observed near the
CCD's edge.
540-89: a very bright star 20 arcsec from the galaxy center perturbs the
isophotal analysis at that radius. e_4_ never dominates the Fourier
terms, f_4_ asymmetry.
540-106: almost edge-on, a bit S-shaped, asymmetric.
540-114: the c/a profile starts to rise at fainter SuBr than sampled by
plate, thus explaining the difference in the envelope
classification.
541-15S: face on.
541-16N: the galaxy Zw 540-16S and nearby stars prevented us from measuring
the shape of this galaxy's envelope.
541-16S: the galaxy 540-16N makes it impossible to measure the SuBr profile
at r>12 arcsec.
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Acknowledgements: Stefano Andreon <andreon@cerere.na.astro.it>
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(End) Patricia Bauer [CDS] 19-Feb-1997