J/ApJ/598/260 Satellites orbiting isolated galaxies (Prada+, 2003)
Observing the dark matter density profile of isolated galaxies.
Prada F., Vitvitska M., Klypin A., Holtzman J.A., Schlegel D.J.,
Grebel E.K., Rix H.-W., Brinkmann J., Mckay T.A., Csabai I.
<Astrophys. J., 598, 260-271 (2003)>
=2003ApJ...598..260P 2003ApJ...598..260P
ADC_Keywords: Galaxies, photometry ; Radial velocities
Keywords: dark matter - galaxies: dwarf - galaxies: halos -
galaxies: kinematics and dynamics - surveys
Abstract:
Using the Sloan Digital Sky Survey (SDSS), we probe the halo mass
distribution by studying the velocities of satellites orbiting
isolated galaxies. In a subsample that covers 2500°2 on the sky,
we detect about 3000 satellites with absolute blue magnitudes going
down to MB=-14; most of the satellites have MB=-16 to -18,
comparable to the magnitudes of M32 and the Magellanic Clouds.
Description:
For the current analysis, we use data on galaxies for which spectra
were obtained before 2002 August.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 43 1781 Data for primary and satellite galaxies (sample 2)
table3.dat 43 3870 Data for primary and satellite galaxies (sample 3)
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See also:
J/AJ/123/567 : SDSS quasar catalog, I: Early Data Release (Schneider+, 2002)
J/AJ/125/1817 : SDSS Early-Type Galaxies Catalog (Bernardi+, 2003)
J/AJ/126/2579 : SDSS quasar catalog. II. First data release (Schneider+, 2003)
Byte-by-byte Description of file: table2.dat table3.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Object Object (1)
4- 12 F9.5 deg RAdeg Right Ascension expressed in degrees (J2000)
14- 22 F9.5 deg DEdeg Declination expressed in degrees (J2000)
24- 28 I5 km/s Vlgsr Velocity in the Local Group Standard of Rest
30- 34 F5.1 mag BMAG The B-band absolute magnitude
36- 39 I4 km/s DVel Absolute value of the velocity difference
between satellite and primary
41- 43 I3 kpc Dist Distance of the satellite to the primary
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Note (1): Object: convention
0 = indicates a host;
>0: indicates a satellite.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 12-Jan-2004