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VII/180 GALAXIES IN 3.5 DEGS OF FORNAX CLUSTER, AND IN FIVE NEARBY GROUPS ================================================================================ Population studies in groups and clusters of galaxies. II. A catalog of galaxies in the central 3.5 degs of the Fornax Cluster FERGUSON H.C. Astron. J. 98, 367 (1989) Population studies in groups and clusters of galaxies.III. A catalog of galaxies in five nearby groups FERGUSON H.C., SANDAGE A. Astron. J. 100, 1 (1990) ================================================================================ Description: (Abstract of the paper II) This paper presents a catalog of 2678 galaxies within an area of nearly 40 deg^2^ centered on the Fornax Cluster at {alpha}=3h35m and {delta}=-35.7deg. The data have been obtained from visual inspection of 26 deep large-scale (10.9arcsec/mm) plates taken with the du Pont 2.5m reflector at the Las Campanas Observatory, and from digital photometry of an ESO/SRC blue survey plate covering roughly the same area of the sky. The catalog is essentially diameter limited, with a limiting diameter of 17arcsec at an isophoto of B_T_ =26.5. Within this survey region, the catalog includes 340 likely cluster members and 2338 likely background galaxies. For cluster members, this listing should be complete to B_T_=18 (corresponding to M_B_T__=13.0, assuming a distance modulus of m-M=31.9) and contains likely members down to B_T_=20. Cluster membership is for the most part based on galaxy morphology. By virtue of their low surface brightness, dwarf galaxies in the cluster can be distinguished with a high degree of certainty from background galaxies. Radial velocities are included for 89 galaxies in the survey, providing a reliable indicator of membership in these cases. As additional support for our rejection of background galaxies, we model the spatial distribution of various types of galaxies as the sum of a King model cluster component superimposed on a uniform background. Using maximum-likelyhood fits to these spatial distributions, we find a core radius of 0.7deg. for a King model fit to the cluster, and show that there are few, if any, cluster members contained in the sample of background galaxies. (abstract of paper III) Five nearby groups of galaxies have been surveyed using large-scale plates from the 2.5 m duPont Telescope at Las Campanas Observatory. Catalogs of galaxies brighter than B_T_ ~ 20 are presented for the Leo, Dorado, NGC 1400, NGC 5044, and Antlia groups. A total of 1044 galaxies are included, from visual inspection of 14 plates, covering 31deg square. Galaxies have been classified in the extended Hubble system, and group memberships have been assigned based on velocity (where available) and morphology. About half the galaxies listed are likely members of one of the nearby groups. The catalogs are complete to B_T_ ~ I8, although the completeness limits vary slightly from group to group. Based on King model fits to the surface density profiles, the core radii of the groups range from 0.3 to 1 Mpc, and central densities range from 120 to 1900 galaxies Mpc^-3^ brighter than M_B_T__ = -12.5. Dynamical analysis indicates that all of the groups are likely to be gravitationally bound. Keywords: galaxies, population, clusters of galaxies, catalog Notes: * Tables are not the same with those in the paper. * The format of item 13 in "expl" file is not correct. It is corrected in the Byte-per-byte Description of file, below. * For the series of this paper, [paper I] Astron. J. 96, 1520 (1988) [paper IV] Astron. J. 101, 765 (1991) (There is no catalogue in these papers.) * A similar catalogue of Virgo cluster is in Astron. J. 90, 1681 (1985). File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- Intro 80 . this file p2tbl2 132 340 Likely Fornax Cluster members p2tbl3 79 2338 Possible members and likely backgr. gal. notes 40 122 Notes to Table 3 (="p2tbl3") p3tbl2 148 52 Galaxy catalogue in Leo group p3tbl3 148 79 Galaxy catalogue in Dorado group p3tbl4 148 120 Galaxy catalogue in NGC1400 group p3tbl5 148 162 Galaxy catalogue in NGC5044 group p3tbl6 148 375 Galaxy catalogue in Antlia group expl 80 186 Explanation for format and notes of paperIII -------------------------------------------------------------------------------- Historical notes: The catalogue was provided by courtesy of H.C. Ferguson to H. Andernach; it was numbered A102 and A112 in H. Andernach's "List of Astronomical Catalogues and Documents kindly provided on request by various authors" 23-Jan-1993: Paper II was archived as VII/160/. 08-Nov-1993: Paper III was archived as J/AJ/100/1/. 14-Mar-1994: Both papers were joined into VII/180/. (The date of the latest archive, see the date of each file.) ================================================================================ Byte-per-byte Description of file: p2tbl2 -------------------------------------------------------------------------------- Bytes Format Unit Label Explanation -------------------------------------------------------------------------------- 1- 4 I4 --- FCC [1,340]+ Fornax Cluster Catalog number 6- 7 I2 h RAh [3] right ascension (hours) (B1950) 9- 10 I2 min RAm [09,51]+= right ascension (minutes) 12- 15 F4.1 s RAs [0,60] right ascension (seconds) 17 A1 . DE- [-] declination sign 18- 19 I2 deg DEd declination (degrees) (B1950) 21- 22 I2 arcmin DEm declination (minutes) 24- 25 I2 arcsec DEs [0,60] declination (seconds) 27 A1 --- Mem [1-6] membership status of the galaxy 1=definite member, 2=likely member, 3=possible member, 4=likely background, 5=definite background, 6=likely plate flaw 29- 53 A25 --- MORPH []! morphological type 55- 58 F4.1 mag BT total blue apparent magnitude 60- 64 F5.1 arcsec RADef [0,]? effective radius (arcsec) 66- 69 F4.2 0.1arcmin logD decimal logarithm of the diameter in units of 0.1arcmin at an isophoto 71- 72 A2 --- SOURCE [ 0-9]! source of coordinates, magnitudes, and effective radii. See paper. 74- 78 I5 km/s Vhel []? heliocentric velocity (km/s) 80- 83 I4 km/s e_Vhel []? uncertainty of the velocity (km/s) 86 A1 --- r_Vhel [ 1-3] source of the velocity 1=Richter and Sadler(1985), 2=Jones and Jones(1980), 3=Lauberts(1982) 89 A1 --- Note [ 1-5] additional notes on individual galaxies listed in the paper 91-122 A32 --- NANE names of the galaxy (up tp 4) 124-132 A9 --- IAU [ 0-9+-] IAU coordinate designation -------------------------------------------------------------------------------- Byte-per-byte Description of file: p2tbl3 -------------------------------------------------------------------------------- Bytes Format Unit Label Explanation -------------------------------------------------------------------------------- 1 A1 --- PREFIX [B] prefix of Fornax Cluster Catalog number indicating the background galaxy 2- 5 I4 --- FCC [1,2338] Fornax Cluster Catalog number 6 A1 --- n_FCC [*] the '*' indicates that a velocity or alternate name is listed in the notes for the Table 3. See "notes". 8- 9 I2 h RAh [3] right ascension (hours) (B1950) 11- 12 I2 min RAm [09,52]+= right ascension (minutes) 14- 17 F4.1 s RAs [0,60] right ascension (seconds) 19 A1 . DE- [-] declination sign 20- 21 I2 deg DEd declination (degrees) (B1950) 23- 24 I2 arcmin DEm declination (minutes) 26- 27 I2 arcsec DEs [0,60] declination (seconds) 29 A1 --- Mem [1-6]! membership status of the galaxy 1=definite member, 2=likely member, 3=possible member, 4=likely background, 5=definite background, 6=likely plate flaw 31- 60 A30 --- MORPH []! morphological type 62- 65 F4.1 mag BT total blue apparent magnitude 67- 71 F5.1 arcsec RADef [0,]? effective radius (arcsec) 73- 76 F4.2 0.1arcmin logD decimal logarithm of the diameter in units of 0.1arcmin at an isophoto 78- 79 A2 --- SOURCE [ 0-9] source of coordinates, magnitudes, and effective radii. See paper. -------------------------------------------------------------------------------- Byte-per-byte Description of file: notes -------------------------------------------------------------------------------- Bytes Format Unit Label Explanation -------------------------------------------------------------------------------- 1 A1 --- PREFIX [B] prefix of Fornax Cluster Catalog number indicating the background galaxy 2- 5 I4 --- FCC [1,2338] Fornax Cluster Catalog number 9- 40 A32 --- Note notes for the galaxy designated '*' in Table 3, column 6. Velocity or alternate name. -------------------------------------------------------------------------------- Byte-per-byte Description of file: p3tbl2 Byte-per-byte Description of file: p3tbl3 Byte-per-byte Description of file: p3tbl4 Byte-per-byte Description of file: p3tbl5 Byte-per-byte Description of file: p3tbl6 -------------------------------------------------------------------------------- Bytes Format Unit Label Explanation -------------------------------------------------------------------------------- 1- 3 I3 --- N [1,400]+ galaxy number 5 I1 --- PLATE [0,]! Las Campanas plate ID number (plate) 6 A1 . HYPH [-]! hyphen 7- 9 A3 --- GAL [ 0-9]! Las Campanas plate ID number (galaxy) 11- 12 I2 h RAh right ascension (hours) (B1950) 14- 15 I2 min RAm right ascension (minutes) 17- 18 I2 s RAs right ascension (seconds) 20 A1 . DE- declination sign 21- 22 I2 deg DEd declination (degrees) (B1950) 24- 27 F4.1 arcmin DEm declination (minutes) 29 I1 --- Mem [1,3] membership class 1=definite member, 2=likely member, 3=possible member, 4=likely background 30 A1 --- COMM [,] comma (if another membership class follows) 31 I1 --- u_Mem [0,4]? another membership class when class or reality is uncertain 33- 36 F4.1 mag BT total B magnitude 38- 40 I3 arcsec AXma [0,] major axis in arcsec (eye estimate) 42- 44 I3 arcsec AXmi [0,] minor axis in arcsec (eye estimate) 46- 78 A33 --- MORPH []! morphological type 80-103 A24 --- Name alternate name(s) 105-109 I5 km/s Vhel []? heliocentric (usually) velocity (km/s) 111-113 I3 km/s e_Vhel [0,]? uncertainty of Vhel 115-116 I2 --- r_Vhel [1,10]? reference of Vhel (1) 118-119 I2 --- r_BT [1,11]? reference of BT (1) 121-122 I2 --- Note [1,11]? notes (2) 124-134 A11 --- MORPH1 [0-9a-m]! morphological type code (3) 136 A1 --- CONJ [0-3]! morphological type conjunction (4) 138-148 A11 --- MORPH2 [0-9a-m]! alternate morphological type(3) -------------------------------------------------------------------------------- Note (1): See note 1 of "expl" file. Note (2): See note 2 of "expl" file. Note (3): See note 3 of "expl" file. Note (4): See note 4 of "expl" file. ================================================================================ (End) Koichi Nakajima [CDS] 28-Feb-1994