J/AJ/121/225 Photometry and kinematics of NGC 1433 and NGC 6300 (Buta+, 2001)
Dynamics of ringed barred spiral galaxies. I. Surface photometry and kinematics
of NGC 1433 and NGC 6300.
Buta R., Ryder S.D., Madsen G.J., Wesson K., Crocker D.A., Combes F.
<Astron. J., 121, 225-243 (2001)>
=2001AJ....121..225B 2001AJ....121..225B (SIMBAD/NED BibCode)
ADC_Keywords: Rotational velocities ; Photometry, surface
Keywords: Galaxies: Individual: NGC Number: NGC 1433, Galaxies: Individual:
NGC Number: NGC 6300, Galaxies: Kinematics and Dynamics,
Galaxies: Structure
Abstract:
This paper presents new near-infrared images and surface photometry
and Hα Fabry-Perot radial velocities for NGC 1433 and NGC 6300,
two large and previously well-studied nearby ringed barred spiral
galaxies. Stellar absorption-line radial velocities and new optical
surface photometry are also presented for NGC 1433. The data are
intended to set the stage for dynamical modeling of the two galaxies,
with the principal goals being to derive mass distributions, bar
mass-to-light ratios, bar pattern speeds, and resonance locations,
parameters which have been derived for very few ringed disk galaxies.
The presence of strong rings and pseudorings in the two galaxies
allows the possibility to link specific orbital resonances with the
observed rings. The new data allow us to derive a fairly complete
composite rotation curve of NGC 1433, leading us to make some
interesting preliminary judgments about the structure of the galaxy.
The new data also verify the previous finding that the radial velocity
of the Seyfert nucleus in NGC 6300 differs from the actual systemic
velocity of the galaxy by nearly 100 km s-1. We demonstrate in this
paper that the offset is not an artifact of significant extinction in
the inner regions of the galaxy.
Objects:
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RA (2000) DE Designation(s)
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03 42 01.5 -47 13 19 NGC 1433
17 16 59.2 -62 49 11 NGC 6300
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 21 20 Hα Fabry-Perot Rotation Velocities
in NGC 1433
table4.dat 26 16 Stellar Rotation Velocities in NGC 1433
table6.dat 11 27 Bulge Profile for NGC 6300
table8.dat 24 16 Hα Fabry-Perot Rotation Velocities
in NGC 6300
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 5 F5.1 arcsec Rad Radius along the major axis
7- 10 F4.1 arcsec HalfR Radius range half-width
12- 16 F5.1 km/s Vel Mean rotation velocity
18- 21 F4.1 km/s e_Vel Internal error in Vel
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 4 F4.1 arcsec Rad Radius along the major axis
6- 9 F4.1 arcsec Half Spectral aperture half-width
11- 15 F5.1 km/s Vel Mean stellar rotation velocity
17- 20 F4.1 km/s e_Vel Error in Vel
22- 26 F5.1 km/s VelT ? True circular velocity after approximate
correction for asymmetric drift
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Byte-by-byte Description of file: table6.dat
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Bytes Format Units Label Explanations
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1- 5 F5.2 arcsec Rad Radius
7- 11 F5.2 mag/arcsec2 SB The H-band surface brightness
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Byte-by-byte Description of file: table8.dat
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Bytes Format Units Label Explanations
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1- 5 F5.1 arcsec Rad Radius along the major axis
7- 9 F3.1 arcsec HalfR Radius range half-width
11- 15 F5.1 km/s Vel Mean rotation velocity
17- 20 F4.1 km/s SDVel Standard deviation in Vel
22- 24 F3.1 km/s e_Vel Mean error of Vel
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Laurent Cambresy [CDS] 28-Jul-2004