J/A+A/421/595 Deprojecting spiral galaxies method (Garcia-Gomez+, 2004)
Deprojecting spiral galaxies using Fourier analysis.
Application to the Ohio sample.
Garcia-gomez C., Barbera C., Athanassoula E., Bosma A., Whyte L.
<Astron. Astrophys., 421, 595-601 (2004)>
=2004A&A...421..595G 2004A&A...421..595G
ADC_Keywords: Galaxy catalogs ; Morphology
Keywords: galaxies: structure - galaxies: spiral
Abstract:
We use two new methods developed recently (Barbera et al., 2004, Cat.
J/A+A/415/849), as well as information obtained from the literature,
to calculate the orientation parameters of the spiral galaxies in the
Ohio State University Bright Spiral Galaxy Survey (OSUBSGS). We
compare the results of these methods with data from the literature,
and find in general good agreement. We provide a homogeneous set of
mean orientation parameters which can be used to approximately
deproject the disks of the galaxies and facilitate a number of
statistical studies of galaxy properties.
Description:
Deprojection angles of each galaxy using the BAG1 and BAG2 methods
plus the deprojection angles found in the literature. The last four
columns of table1.dat contain the values adopted for the position
angle, its dispersion, the inclination angle and its dispersion in
degrees.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1a.dat 76 158 Deprojecting information for 158 galaxies
table1b.dat 27 767 Available data in the literature
refs.dat 112 116 References
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See also:
J/A+A/415/849 : Deprojection of spiral galaxies (Barbera+, 2004)
http://www-astronomy.mps.ohio-state.edu/~survey : OSUBSGS Home Page
Byte-by-byte Description of file: table1a.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Name Galaxy name
10- 12 I3 deg PA1a Position angle obtained with BAG1 method
and first filter (Filta)
14- 15 I2 deg IA1a Inclination angle obtained with BAG1 method
and first filter (Filta)
18- 20 I3 deg PA2a ? Position angle obtained with BAG2 method
and first filter (Filta)
22- 23 I2 deg IA2a ? Inclination angle obtained with BAG2 method
and first filter (Filta)
25 A1 --- Filta [B] Image filter
27- 29 I3 deg PA1b ? Position angle obtained with BAG1 method
and second filter (Filtb)
31- 32 I2 deg IA1b ? Inclination angle obtained with BAG1 method
and second filter (Filtb)
35- 37 I3 deg PA2b [-2/184] ? Position angle obtained with BAG2
method and second filter (Filtb)
39- 40 I2 deg IA2b ? Inclination angle obtained with BAG2 method
and second filter (Filtb)
42 A1 --- Filtb [BH] Image filter (blue or infrared)
45- 47 I3 deg mPA1 Mean position angle of BAG1 method
49- 50 I2 deg mIA1 Mean inclination angle of BAG1 method
52 I1 --- w_mIA1 Weight of the averaged deprojection angles
from BAG1
55- 57 I3 deg mPA2 ? Mean position angle of BAG2 method
59- 60 I2 deg mIA2 ? Mean inclination angle of BAG2 method
62 I1 --- w_mIA2 Weight of the averaged deprojection angles
from BAG2
65- 67 I3 deg PA Adopted position angle (1)
69- 70 I2 deg e_PA ? Standard weighted deviation for the adopted
position angle
72- 73 I2 deg IA Adopted inclination angle (1)
75- 76 I2 deg e_IA ? Standard weighted Deviation for adopted
inclination angle
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Note (1): Adopted values from BAG1, BAG2 and literature (table1b.dat)
weighed values.
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Byte-by-byte Description of file: table1b.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Name Galaxy name
11- 13 I3 deg PAL ? Position angle obtained from the literature
16- 17 I2 deg IAL ? Inclination angle obtained from the literature
19- 20 I2 --- w_PAL Adopted weight for these two previous values
22- 24 A3 --- Type Deprojection method (1)
25- 27 I3 --- r_PAL ? Code number for literature reference,
in refs.dat file
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Note (1): Methods for obtaining the deprojection angles are coded as follows:
P = Photometry
KC = CO Kynematics
KO = Optical Kynematics
KH = HI Kinematics
KHP = HI Kinematics + Photometry
KS = Long slit Kinematics
S = Spirals
O = Other
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Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Ref Reference number
5- 23 A19 --- BibCode BibCode
25- 59 A35 --- Aut Author's name
64-112 A49 --- Com Comments
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Acknowledgements: Carlos Garcia-Gomez,
(End) Patricia Vannier [CDS] 07-Feb-2005