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J/A+A/309/749       Fundamental plane of early type galaxies    (Prugniel+ 1996)

The fundamental plane of early-type galaxies: stellar populations and mass-to-light ratio Prugniel P., Simien F. <Astron. Astrophys. 309, 749 (1996)> =1996A&A...309..749P
ADC_Keywords: Galaxies, optical; Galactic plane; Populations, stellar Keywords: galaxies: elliptical & lenticular, cD - galaxies: fundamental parameters - galaxies: photometry - galaxies: kinematics and dynamics Abstract: We analyse the residuals to the fundamental plane (FP) of elliptical galaxies as a function of stellar-population indicators; these are based on the line-strength parameter Mg2 and on UBVRI broad-band colors, and are partly derived from new observations. The effect of the stellar populations accounts for approximately half the observed variation of the mass-to-light ratio responsible for the FP tilt. The residual tilt can be explained by the contribution of two additional effects: the dependence of the rotational support, and possibly that of the spatial structure, on the luminosity. We conclude to a constancy of the dynamical-to-stellar mass ratio. This probably extends to globular clusters as well, but the dominant factor would be here the luminosity dependence of the structure rather than that of the stellar population. This result also implies a constancy of the fraction of dark matter over all the scalelength covered by stellar systems. Our compilation of internal stellar kinematics of galaxies is appended. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file tablea1.dat 95 3147 Catalogue of central velocity dispersion tablea2.dat 58 883 Catalogue of maximum velocity of rotation tablea3.dat 165 287 Bibliographic references for tablea1 and tablea2 tableb1.dat 72 427 Fundamental parameters for the galaxies in the sample
See also: http://www-obs.univ-lyon1.fr/~prugniel/cgi-bin/hypercat/ : the HYPERCAT database J/A+AS/128/299 : Prugniel & Heraudeau, 1998, Photometry of galaxies J/A+AS/127/117 : Prugniel et al., 1998, Kinematics of galaxies J/A+AS/132/255 : A catalogue of Mg2 indices (Golev+ 1998) Byte-by-byte Description of file: tablea1.dat
Bytes Format Units Label Explanations
2- 12 A11 --- Name Galaxy identifier (1) 14- 15 I2 h RAh ? Right Ascension 1950 (hours) 16- 17 I2 min RAm ? Right Ascension 1950 (min) 18- 21 F4.1 s RAs ? Right Ascension 1950 (sec) 22 A1 --- DE- [±] Sign of declination 23- 24 I2 deg DEd ? Declination 1950 (degrees) 25- 26 I2 arcmin DEm ? Declination 1950 (minutes) 27- 28 I2 arcsec DEs ? Declination 1950 (seconds) 30- 32 I3 km/s sigmam ? Adopted central velocity dispersion (2) 36 A1 --- l_sigma ? Upper (<) or lower (>) limit 37- 41 F5.1 km/s sigma Central velocity dispersion (raw) (3) 42- 46 F5.1 km/s e_sigma ? Mean error on sigma 49- 55 A7 --- Ref_a Acronym of the source reference (4) 57- 59 I3 --- Ref_c Numerical code of the source ref (5) 61 I1 --- Reject ? [1 ] Rejection flag, 1=rejected 63- 95 A33 --- Note Descriptive note or alternative name
Note (1): The Name has been adopted by descending the hierarchy: (1) Usual name for the dwarf spheroidal galaxy and the Milky Way, (2) NGC name, (3) IC, (4) UGC or ESO, (5) PGC (Principal Galaxies Catalogue) (6) LEDA (Lyon- Meudon Extragalactic Database) internal identifier. For about 50 object left unfolted into this hierarchy we kept the designation from the original reference. When Name differed from the original designation, the latter is indicated in the field Note. Note (2): The velocity dispersions reported here are from absorption lines, except for Milky Way and the dwarf spheroidal galaxy: from individual stellar velocity, and for the references Hui93 (Hui, X. 1993) and Arna+94 (Arnaboldi et al., 1994): from planetary nebulae. Note (3): sigmam is a mean of the re-scaled measured velocity dispersion, (sigma) weighted by the inverse of the squared mean error (e_sigma). The scaling factors are listed in tablea3 (scale). Note (4): Refers to tablea3 Note (5): Refers to tablea3
Byte-by-byte Description of file: tablea2.dat
Bytes Format Units Label Explanations
2- 12 A11 --- Name Galaxy identifier (1) 14- 15 A2 --- Axis [MJ MI PA] Axis used for rotation measure (2) 17- 31 A15 --- Note Note on the galaxy 33 A1 --- l_Vmax ? Upper (<) or lower (>) limit 34- 36 I3 km/s Vmax ? Maximum velocity of Rotation 38- 40 I3 km/s e_Vmax ? Mean error on Vmax 42- 58 A17 --- Ref_a Acronym of the source reference (3)
Note (1): See tablea1 Note (2): Indicate the axis along which the rotation has been measured, coded as follow: MJ: Major axis MI: Minor axis PA: Pair axis, for binary galaxies Note (3): Refers to tablea3
Byte-by-byte Description of file: tablea3.dat
Bytes Format Units Label Explanations
2- 4 I3 --- Ref_c Numerical code of the source ref (1) 6- 12 A7 --- Ref_a Acronym of the source reference 13- 17 F5.3 --- Scale ? Scaling factor to be applied (2) 19-165 A147 --- Ref Full text of the reference
Note (1): References codes in the range [1-138] are present in McElroy (1995ApJS..100..105M); numbers in the range [201-351] are not; reference 500 gathers new unpublished measurements from Observatoire de Haute-Provence observations Note (2): The raw measurement of the velocity dispersion (sigma in tablea1) has to be multiplied by the scaling factor Scale to convert it in a homogeneous scale.
Byte-by-byte Description of file: tableb1.dat
Bytes Format Units Label Explanations
2- 12 A11 --- Name Galaxy identifier (1) 14 I1 --- SSample [1-6] Sub-sample 16- 20 F5.2 mag Dmod Distance modulus 22- 26 F5.2 mag Bt Total apparent B magnitude (2) 28- 32 F5.2 mag/arcsec2 mue Mean B surface brightness with r_e (3) 33- 37 F5.2 mag U-B ?=9.99 U-B color within r_e, corrected (4) 39- 42 F4.2 mag B-V ?=9.99 B-V color within r_e, corrected (5) 44- 47 F4.2 mag V-R ?=9.99 V-R color within r_e, corrected (6) 49- 52 F4.2 mag V-I ?=9.99 V-I color within r_e, corrected (7) 54- 58 F5.3 mag Mg2 ?=9.999 Mg2 index 60- 62 I3 km/s sigmam Adopted central velocity dispersion (8) 64- 66 I3 km/s Vmax ?=999 Maximum velocity of rotation, (9) 68- 72 F5.2 --- Rfp Residual from the Fundamental Plane
Note (1): See tablea1. Note (2): Corrected for galactic absorption (Burstein & Heiles) and k. Note (3): Mean B surface brightness within the effective circular aperture. Corrected for galactic absorption (Burstein & Heiles), k and cosmologic (1+z)**4 dimming. Note (4): corrected for Galactic absorption with: E(U-B)=0.20 Ab k-corrected with: (U-B)corr=(U-B)raw+0.055*velocity[km/s]*1.e-4 Note (5): corrected for Galactic absorption with: E(B-V)=0.25 Ab k-corrected with: (B-V)corr=(B-V)raw+0.095*velocity[km/s]*1.e-4 Note (6): corrected for Galactic absorption with: E(V-R)=0.20 Ab k-corrected with: (V-R)corr=(V-R)raw+0.030*velocity[km/s]*1.e-4 Note (7): corrected for Galactic absorption with: E(V-I)=0.35 Ab k-corrected with: (V-I)corr=(V-I)raw+0.030*velocity[km/s]*1.e-4 Note (8): average weighted by the inverse square error of the re-scaled measurements Note (9): average weighted by the inverse square error of the MJ measurements
Courtesy: P. Prugniel,
(End) Patricia Bauer [CDS] 12-Jan-1996
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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