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J/AJ/133/504    Galaxies around CenA/M83 galaxy complex   (Karachentsev+, 2007)

The Hubble flow around the Centaurus A/M83 galaxy complex. Karachentsev I.D., Tully R.B., Dolphin A., Sharina M., Makarova L., Makarov D., Sakai S., Shaya E.J., Kashibadze O.G., Karachentseva V., Rizzi L. <Astron. J., 133, 504-517 (2007)> =2007AJ....133..504K
ADC_Keywords: Clusters, galaxy ; Galaxies, nearby ; Redshifts ; Photometry, HST Keywords: galaxies: clusters: general - galaxies: distances and redshifts - galaxies: kinematics and dynamics Abstract: We present Hubble Space Telescope ACS images and color-magnitude diagrams for 24 nearby galaxies in and near the constellation of Centaurus with radial velocities VLG<550km/s. Distances are determined based on the luminosities of stars at the tip of the red giant branch that range from 3.0 to 6.5Mpc. The galaxies are concentrated in two spatially separated groups around Cen A (NGC 5128) and M83 (NGC 5236). Description: We have observed 24 galaxies with the Advanced Camera for Surveys (ACS) during HST Cycles 12 and 13 (proposals 9771 and 10235). File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 105 24 New distances to galaxies in the Cen A/M83 complex table2.dat 73 87 Galaxies in and around the Cen A/M83 complex
Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 13 A13 --- Name Galaxy name(s) 15- 16 I2 h RAh Hour of Right Ascension (J2000) 18- 19 I2 min RAm Minute of Right Ascension (J2000) 21- 24 F4.1 s RAs Second of Right Ascension (J2000) 26 A1 --- DE- Sign of the Declination (J2000) 27- 28 I2 deg DEd Degree of Declination (J2000) 30- 31 I2 arcmin DEm Arcminute of Declination (J2000) 33- 34 I2 arcsec DEs Arcsecond of Declination (J2000) 36- 38 I3 km/s VLG ? Radial velocity in the Local Group rest frame 40- 44 F5.2 mag Imag Red Giant Branch tip I band magnitude 46- 49 F4.2 mag e_Imag ? The 1σ error in Imag 51- 54 F4.2 mag V-I ? Mean (V-I) color index (1) 56- 60 F5.3 mag e_V-I ? The 1σ error in V-I 62- 65 F4.2 mag SD ? Standard deviation of the RGB (V-I) color index 67- 70 F4.2 mag AI Schlegel et al. (1998ApJ...500..525S) I band extinction 72- 76 F5.2 mag m-M True distance modulus 78- 81 F4.2 mag e_m-M ? The 1σ error in distance modulus 83- 86 F4.2 Mpc Dist Linear distance 88- 93 F6.3 [Sun] [Fe/H] ? Mean Red Giant Brand metallicity 95- 99 F5.3 [Sun] e_[Fe/H] ? Random error in [Fe/H] 101-105 F5.3 [Sun] e[Fe/H] ? Systematic error in [Fe/H]
Note (1): Measured at an absolute I magnitude -3.5, correlated with metallicity (Lee et al., 1993ApJ...417..553L).
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 16 A16 --- Name Galaxy name(s) 18- 19 I2 h RAh Hour of Right Ascension (J2000) 21- 22 I2 min RAm Minute of Right Ascension (J2000) 24- 27 F4.1 s RAs Second of Right Ascension (J2000) 29 A1 --- DE- Sign of the Declination (J2000) 30- 31 I2 deg DEd Degree of Declination (J2000) 33- 34 I2 arcmin DEm Arcminute of Declination (J2000) 36- 37 I2 arcsec DEs Arcsecond of Declination (J2000) 39- 40 I2 --- TT ? Morphological type 42- 45 F4.1 --- Theta ? The "tidal index" (1) 47- 49 I3 km/s VLG ? Radial velocity with respect to the Local Group centroid 51- 52 I2 km/s e_VLG ? The 1σ error in VLG 54- 57 F4.2 Mpc Dist Distance 59- 62 F4.2 Mpc e_Dist ? The 1σ error in Dis 64- 66 A3 --- f_Dist Method to estimate Dis (2) 68- 71 A4 --- Ref Reference for the distance or new radial velocity (3) 73 A1 --- Mm Galaxy membership note (4)
Note (1): Following the Catalog of Neighboring Galaxies (Karachentsev et al., 2004, Cat. J/AJ/127/2031, CNG): for every galaxy "i" we found its "main disturber" (=MD), producing the highest tidal action Θi = max{log(Mk/Dik3)} + C (i = 1, 2... N) where Mk is the total mass of any neighboring potential MD galaxy (proportional to its luminosity with M/LB=10M/L) separated from the considered galaxy by a space distance Dik; the value of the constant C is chosen so that Θ=0 when the Keplerian cyclic period of the galaxy with respect to its MD equals the cosmic Hubble time, 1/H0; therefore positive values correspond to galaxies in groups, while the negative ones correspond to isolated galaxies. Note (2): Method as follows: cep = Cepheids rgb = tip of RGB sbf = surface brightness fluctuations mem = probable membership in the known groups h = radial velocity with the global Hubble constant H0=72km/s/Mpc (Freedman et al., 2001ApJ...553...47F). Note (3): References as follows: K06a = Karachentsev et al. (2006AJ....131.1361K) CNG = Karachentsev et al. (2004, Cat. J/AJ/127/2031) T06 = Tully et al. (2006AJ....132..729T) Ko04 = Koribalski et al. (2004, Cat. J/AJ/128/16) K07 = This work M04 = Meyer et al. (2004MNRAS.350.1195M, Cat. VIII/73) G05 = Galazutdinova (2005ApJ...629..299G) R05 = Rejkuba (2004A&A...413..903R) Sh05 = Sharina (2005, Cat. J/A+A/442/85) Note (4): Based on a positive tidal index to C or M with the following meaning: C = the Cen A group M = the M 83 group
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 12-Dec-2008
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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