ADC/CDS Standard Document for Catalog:/journal_tables/A+AS/116/429/
ADC/CDS Standard Document for Catalog:| 1. Use the ADC Data Viewer Suite to visualize the data. |
|
| 2. Get the data files via anonymous FTP. (See Note.) |
|
J/A+AS/116/429 Classification of Coma early galaxies (Andreon+ 1996)
================================================================================
Morphological classification and structural parameters for early-type galaxies
in the Coma cluster.
Andreon S., Davoust E., Michard R., Nieto J.-L., Poulain P.
<Astron. Astrophys. Suppl. Ser. 116, 429 (1996)>
=1996A&AS..116..429A (SIMBAD/NED BibCode)
================================================================================
ADC_Keywords: Galaxy catalogs ; Morphology ; Photometry, surface
Keywords: galaxies: clusters: individual: Coma -
galaxies: elliptical and lenticular, cD -
galaxies: fundamental parameters
Description:
We present the results of an isophotal shape analysis of three samples
of galaxies in the Coma cluster. Quantitative morphology, together
with structural and photometric parameters, is given for each galaxy.
Special emphasis has been placed on the detailed classification of
early-type galaxies. The three samples are: i) a sample of 97
early-type galaxies brighter than m_B_=17.00 falling within one degree
from the center of the Coma cluster; these galaxies were observed with
CCD cameras, mostly in good to excellent resolution conditions; ii) a
magnitude complete sample of 107 galaxies of all morphological types
down to m_B_=17.00 falling in a circular region of 50arcmin diameter,
slightly offcentered to the North-West of the cluster center; the
images for this and the next sample come from digitized photographic
plates; iii) a complete comparison sample of 26 galaxies of all
morphological types down to m_R_=16.05 (or m_B_=~17.5), also in a
region of 50arcmin diameter, but centered 2.6degrees West of the
cluster center. The reliability of our morphological classifications
and structural parameters of galaxies, down to the adopted magnitude
limits, is assessed by comparing the results on those galaxies for
which we had images taken with different instrumentation and/or seeing
conditions, and by comparing our results with similar data from other
observers.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1 43 151 Observing log
table2a 133 105 CCD Telescope Bernard Lyot (TBL) subsample
photometric parameters and classification
table2b 133 17 CCD CFH subsample photometric parameters and
classification
table3 133 113 KP1608 sample photometric parameters and
classification
table4 121 47 FW sample photometric parameters and
classification
notes 270 86 Individual notes
--------------------------------------------------------------------------------
See also:
J/A+AS/126/67 : Coma and Perseus clusters galaxies (Andreon+ 1997)
Byte-by-byte Description of file: table1
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 5 A5 --- Name Abridged GMP or NGC number
8- 9 I2 s Exp ? Exposure time
12 A1 --- Filt Filter
14 I1 --- Run Observing run
17- 20 F4.2 arcsec FWHM ? Seeing
21 A1 --- u_FWHM [?] Uncertainty flag on FWHM
24- 28 F5.2 mag/arcsec+2 Sky ? Sky brightness
31- 35 F5.2 mag/arcsec+2 Isolim ? Level of last measured isophote
37- 40 A4 --- Notes Notes (1)
--------------------------------------------------------------------------------
Note (1): (1) presumably absorbed weather;
(2) not analysed;
(3) spiral;
(4) calibration from mean sky brightness;
(5) elongated stellar images;
(6) calibration uncertain, mean of previous night;
(7) near edge of image;
(8) very doubtful identity;
(9) blended binary;
(10) inadequate field;
(11) Superimposed on NGC 4889, measured after subtraction of a model
image of the cD;
(12) underexposed image with bright sky;
(13) companion to the W;
(14) halo of a very bright star;
(15) suspiciously high seeing;
(16) very poor seeing;
(17) calibrator of KP2225.
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table2a table2b table3
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 I4 --- GMPa Number in the abridged version of GMP
catalogue <VII/42>
7- 10 I4 --- GMP Number in the unabridged version of GMP
catalogue <VII/42>
13- 15 I3 --- Dress ? Number in Dressler catalogue <VII/174>
18- 24 A7 --- Name NGC, Ic or RB (Rood & Baum 1967) number.
25 A1 --- m_Name Multiplicity index on Name
28- 32 I5 arcsec Xpos X differential position (1)
35- 39 I5 arcsec Ypos Y differential position (1)
42- 46 F5.2 mag Rmag ? Asymptotic magnitude in R_c_
49- 52 F4.2 arcsec log(Reff) ? Effective radius (10)
55- 58 F4.2 arcsec log(a) ? Semi-major axis of the effective
isophote (10)
61- 65 F5.2 mag/arcmin+2 SuBr ? Mean surface brightness inside the
effective isophote, in R magnitude
68- 69 A2 --- Diskp Photometric evidence for a disk (2)
72- 75 F4.2 --- b/a ? Typical axis ratio (9)
78- 81 F4.1 % e4 ? Typical e4 parameter (9)
84- 85 A2 --- n_e4 Location where the e4 parameter was
estimated (3)
88- 91 F4.2 --- b/ae ? Axis ratio at the envelope, i.e. at the
isophote {mu}_r_=24mag/arcsec^2^
94- 95 I2 deg Ampli ? Amplitude of isophotal twist in the range
of reliable measurements
98-101 A4 --- Bar Detection of bar (4)
104-107 A4 --- Disk Detection and classification of a disk (5)
110-114 A5 --- Spiral Detection of a spiral pattern (6)
117-120 A4 --- Envelope Classification of an envelope (7)
123-130 A8 --- MType Morphological classification (8)
132 A1 --- Note [*] Individual notes (see notes file)
--------------------------------------------------------------------------------
Note (1): X and Y positions in arc seconds relative to the approximate
center of the cluster, increasing westwards and northwards
respectively. The origin of these coordinates is at
RA=12h57.3 Dec=+28d14.4'(1950.0).
Note (2): st: strong;
cl: clear;
ft: faint;
no: none
Note (3): ex: at its extremum,
re: at the effective isophote,
co: if the value is the same at both locations
Note (4): bar: bar seen,
bar?: bar suspected,
no: no bar seen
Note (5): emDi: embedded disk,
miDi: mixed disk,
exDi: extended disk,
-?Di: detected but unclassified disk,
-no- (no disk seen)
Note (6): spiP: spiral pattern seen,
spiP?: spiral pattern suspected,
-no-: no spiral pattern seen
Note (7): spH: spheroidal halo,
thD: thick disk,
exD: extended disk,
pec: peculiar envelope,
-?-: unclassified envelope
Note (8): boE: boxy E,
unE: undetermined E,
diE: disky E,
SA0, SAB0, SB0, Sa, etc.,
S...: spiral of unknown stage)
Note (9): Typical value, either its minimum value, if clearly defined,
or its value at the effective isophote otherwise
Note (10): The units are erroneously indicated as 0.1arcmin in the
printed paper.
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table4
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
2- 3 I2 h RAh Right ascension (1950.0)
5- 6 I2 min RAm Right ascension (1950.0)
8- 9 I2 s RAs Right ascension (1950.0)
12- 13 I2 deg DEd Declination (1950.0)
15- 16 I2 arcmin DEm Declination (1950.0)
18- 19 I2 arcsec DEs Declination (1950.0)
22- 28 A7 --- Name NGC, IC or RB (Rood & Baum 1967) number.
FW and D from Strom & Strom (1978),
anon = anonymous (m_R_<=16.05),
supll = anonymous (m_R_> 16.05)
29 A1 --- m_Name Multiplicity index on Name
32- 36 F5.2 mag Rmag ? Asymptotic magnitude in R_c_
39- 42 F4.2 arcsec log(Reff) ? Effective radius (10)
45- 48 F4.2 arcsec log(a) ? Semi-major axis of the effective
isophote (10)
51- 55 F5.2 mag/arcmin+2 SuBr ? Mean surface brightness inside the
effective isophote, in R magnitude
58- 59 A2 --- Diskp Photometric evidence for a disk (1)
62- 65 F4.2 --- b/a ? Typical axis ratio (8)
68- 69 I2 % e4 ? Typical e4 parameter (8)
72- 73 A2 --- n_e4 Location where the e4 parameter was
estimated (2)
76- 79 F4.2 --- b/ae ? Axis ratio at the envelope, i.e. at the
isophote {mu}_r_=24mag/arcsec^2^
82- 83 I2 deg Ampli ? Amplitude of isophotal twist in the
range of reliable measurements
86- 89 A4 --- Bar Detection of bar (3)
92- 95 A4 --- Disk Detection and classification of a disk (4)
98-102 A5 --- Spiral Detection of a spiral pattern (5)
105-108 A4 --- Envelope Classification of an envelope (6)
111-118 A8 --- MType Morphological classification (7)
120 A1 --- Note [*] Individual notes (see notes file)
--------------------------------------------------------------------------------
Note (1): st (strong); cl (clear); ft (faint); no (none)
Note (2): ex (at its extremum), re (at the effective isophote),
co (if the value is the same at both locations)
Note (3): bar (bar seen), bar? (bar suspected), no (no bar seen)
Note (4): emDi (embedded disk), miDi (mixed disk), exDi (extended disk),
-?Di (detected but unclassified disk), -no- (no disk seen)
Note (5): spiP (spiral pattern seen), spiP? (spiral pattern suspected),
-no- (no spiral pattern seen)
Note (6): spH (spheroidal halo), thD (thick disk), exD (extended disk),
pec (peculiar envelope), -?- (unclassified envelope)
Note (7): boE (boxy E), unE (undetermined E), diE (disky E), SA0, SAB0, SB0,
Sa, etc., S... (spiral of unknown stage)
Note (8): Typical value, either its minimum value, if clearly defined, or its
value at the effective isophote otherwise
Note (10): The units are erroneously indicated as 0.1arcmin in the
printed paper.
--------------------------------------------------------------------------------
References:
Dressler A., 1980, ApJS 42, 565 =Catalogue <VII/174>
Godwin, Metcalf and Peach (GMP), 1983, MNRAS 202, 113 =Catalogue <VII/42>
Rood & Baum 1967, AJ 72, 398 =1967AJ.....72..398R
Strom & Strom 1978, AJ 83, 73 =1978AJ.....83...73S
================================================================================
(End) Patricia Bauer [CDS] 13-May-1996