CDROM/AJ/V107/P1629 The Hercules Region (Tarenghi+ 1994) ================================================================================ Galaxy Structures in the Hercules Region Massimo Tarenghi, Bianca Garilli, & Dario Maccagni <1994, AJ, 107, 1629> =1994AJ....107.1629T ================================================================================ Abstract: 216 redshifts have been obtained in a region of 981 sq deg south of the Hercules supercluster. 172 of these redshifts are of galaxies with mpg <= 15.1, 110 of which had no previous velocity measurement. 44 new redshifts are of galaxies fainter than mpg = 15.1. With these new data we have been able to define a sample in a vast region (~1700 sq deg) around Hercules limited to mpg <= 15.1 with a velocity completeness of 81.5%. 189 galaxies have been morphologically classified so that all galaxies in the sample with known velocity now also have known morphology. The magnitude limited sample, including 556 galaxies, is then used to identify and describe galaxy structures in the region. We find that the overdense volume is small, that its overall appearance is that of "a coral branch floating in a sea of nothing" and that early and late type galaxies define different structures. Description: Table 1 lists all the galaxies with Zwicky magnitude brighter than 15.1 either included in the CGCG (Zwicky et al. 1960; Zwicky & Herzog 1963, 1966) or in the 1990 public version of ZCAT and lying in the area delimited by (RA=14h40m, Dec=-3d), (RA=14h40m, Dec=39d), (RA=16h40m, Dec=39d), (RA=16h40m, Dec=15d), (RA=18h18m, Dec=15d) and (RA=18h18m, Dec=-3d). For the sake of completeness and in order that information can be disseminated, Table 2 lists all galaxies with either unpublished velocities (44) or morphologies, or for which there is an estimate of the magnitude. References: Zwicky, F., Herzog, E., & Wild, P. 1960, Catalog of Galaxies and of Clusters of Galaxies (Vol. 1) (California Institute of Technology, Pasadena) (CGCG) Zwicky, F., & Herzog, E. 1963, Catalog of Galaxies and of Clusters of Galaxies (Vol. 2) (California Institute of Technology, Pasadena) (CGCG) Zwicky, F., & Herzog, E. 1966, Catalog of Galaxies and of Clusters of Galaxies (Vol. 3) (California Institute of Technology, Pasadena) (CGCG) File Summary: -------------------------------------------------------------------------------- File Name Lrecl Records Explanations -------------------------------------------------------------------------------- table1.dat 72 556 Magnitudes, velocities and morphological classifications of galaxies with mpg <= 15.1 table2.dat 77 139 Magnitudes, velocities and morphological classifications of galaxies with mpg > 15.1 -------------------------------------------------------------------------------- Byte-by-byte Description of file: table1.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 3 I3 h RAh Right Ascension (1950.0) 4- 6 I3 min RAm R.A. 7- 9 I3 s RAs R.A. 10- 1X --- --- Blank 11 A1 --- DE- [ -] Sign of Declination (1950.0) 12-13 I2 deg DEd Dec. 14-16 I3 arcmin DEm Dec. 17-19 I3 arcsec DEs Dec. 20-27 A8 --- Zwicky Zwicky name 28- 1X --- --- Blank 29-37 A9 --- Name Other name 38- 1X --- --- Blank 39-42 F4.2 mag Mag Apparent magnitude 43- 1X --- --- Blank 44 A1 --- n_Mag *[*] Magnitude note 45-50 I6 km/s Vel []? Heliocentric velocity 51- 1X --- --- Blank 52 A1 --- n_Vel *[*] Velocity note 53- 1X --- --- Blank 54-61 A8 --- Type Morphological classification 62 A1 --- n_Type *[*] Morphology note 63- 1X --- --- Blank 64-72 A9 --- Comment General comment about the galaxy -------------------------------------------------------------------------------- Notes for file: table1.dat -------------------------------------------------------------------------------- n_Mag: An asterisk denotes eye estimates for those galaxies not in the CGCG and for the members of double and multiple systems. The eye estimates were obtained by comparison with a certain number (about a dozen) of Zwicky galaxies in the same field on the blue glass copies of the Palomar Observatory Sky Survey (POSS), and they should be within 0.1 mag of CGCG measurements. n_Vel: One of 110 new velocities obtained by M. Tarenghi in the early eighties. n_Type: Whenever the morphology was not available in the literature, B. Garilli and D. Maccagni independently classified the galaxies by inspecting the blue glass copies of the POSS. -------------------------------------------------------------------------------- Byte-by-byte Description of file: table2.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 3 I3 h RAh Right Ascension (1950.0) 4- 6 I3 min RAm R.A. 7- 9 I3 s RAs R.A. 10- 1X --- --- Blank 11 A1 --- DE- [ -] Sign of Declination (1950.0) 12-13 I2 deg DEd Dec. 14-16 I3 arcmin DEm Dec. 17-19 I3 arcsec DEs Dec. 20-27 A8 --- Zwicky Zwicky name 28- 1X --- --- Blank 29-37 A9 --- Name Other name 38 A1 --- l_Mag [ >] Limiting character for magnitude 39-42 F4.2 mag Mag Apparent magnitude 43- 1X --- --- Blank 44 A1 --- n_Mag *[*] Magnitude note 45-50 I6 km/s Vel []? Heliocentric velocity 51- 1X --- --- Blank 52 A1 --- n_Vel *[*] Velocity note 53- 1X --- --- Blank 54-61 A8 --- Type Morphological classification 62 A1 --- n_Type *[*] Morphology note 63- 1X --- --- Blank 64-77 A14 --- Comment General comment about the galaxy -------------------------------------------------------------------------------- Notes for file: table2.dat -------------------------------------------------------------------------------- n_Mag: An asterisk denotes eye estimates for those galaxies not in the CGCG, and for the members of double and multiple systems. The eye estimates were obtained by comparison with a certain number (about a dozen) of Zwicky galaxies in the same field on the blue glass copies of the Palomar Observatory Sky Survey (POSS), and they should be within 0.1 mag of CGCG measurements. n_Vel: One of 110 new velocities obtained by M. Tarenghi in the early eighties. n_Type: Whenever the morphology was not available in the literature, B. Garilli and D. Maccagni independently classified the galaxies by inspecting the blue glass copies of the POSS. -------------------------------------------------------------------------------- ================================================================================ (End) Lee Brotzman [ADS] 08-May-1994