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J/A+AS/115/407 Short WSRT HI observations of spiral galaxies (Rhee+, 1996)
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Short WSRT HI observations of spiral galaxies
Rhee M.-H., Van Albada T.S.
<Astron. Astrophys. Suppl. Ser. 115, 407 (1996)>
=1996A&AS..115..407R (SIMBAD/NED BibCode)
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ADC_Keywords: Galaxies, radio
Keywords: galaxies: fundamental parameters - galaxies: ISM -
galaxies: kinematics and dynamics - galaxies: structure -
galaxies: spiral - radio lines: galaxies
Description:
We have obtained short HI observations of 60 late type spiral galaxies
with the Westerbork Synthesis Radio Telescope (WSRT). Several HI
properties are presented, including the radial surface density
distribution of HI and a position-velocity map. When possible these
are compared to those measured from single-dish observations. We
confirm earlier results that there is no serious systematic difference
between the WSRT and single-dish observations in total flux and
linewidths.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1 76 60 General properties of the sample galaxies
table2 70 66 Observational parameters
table3 23 60 Parameters of the position-velocity maps
table4 31 60 HI fluxes, masses, diameters and effective
surface densities
table5 213 60 Systemic velocities and HI line profile widths
table6 22 60 Maximum rotation velocities
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Byte-by-byte Description of file: table1
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Bytes Format Units Label Explanations
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2- 10 A9 --- Name Galaxy name
12- 13 I2 h RAh Right ascension of the optical center (1950) (1)
15- 16 I2 min RAm Right ascension of the optical center (1950) (1)
18- 21 F4.1 s RAs Right ascension of the optical center (1950) (1)
23- 24 I2 deg DEd Declination of the optical center (1950) (1)
26- 27 I2 arcmin DEm Declination of the optical center (1950) (1)
29- 30 I2 arcsec DEs Declination of the optical center (1950) (1)
32- 35 A4 --- MType Morphological type (1)
37- 40 F4.1 Mpc Dist Distance to the galaxy (2)
42- 43 I2 deg Inclin Inclination (3)
45- 48 F4.2 mag AbB Galactic extinction in the B-band
50- 53 F4.2 mag AiB Internal extinction in the B-band
55- 58 F4.2 arcmin D25 Uncorrected blue major-axis isophotal diameter
at the 25 mag/arcsec^2 (1)
60- 63 F4.1 kpc Dbi25 Corrected blue major-axis isophotal diameter
65- 69 F5.2 mag BTmag Uncorrected total apparent blue magnitude (1)
71- 76 F6.2 mag MBabs Corrected absolute blue magnitude (4)
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Note (1): Parameters taken from LEDA, Lyon-Meudon Extragalactic Database
Note (2): Calculated from the systemic velocity (column 2 of Table 5),
corrected for the Virgo-centric flow and H0=75km/s/Mpc
Note (3): Calculated from the axial ratio b/a of the disc:
cos^2(i)=[(b/a)^2-q_0_^2]/(1-q_0_^2)
Note (4): MBasb= BTmag - AbB - AiB -5log(Dist) -25
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Byte-by-byte Description of file: table2
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Bytes Format Units Label Explanations
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2- 10 A9 --- Name Galaxy name
12- 13 I2 h RAh Right ascension of the optical center (1950)
15- 16 I2 min RAm Right ascension of the optical center (1950)
18- 19 I2 s RAs Right ascension of the optical center (1950)
21- 22 I2 deg DEd Declination of the optical center (1950)
24- 25 I2 arcmin DEm Declination of the optical center (1950)
27- 28 I2 arcsec DEs Declination of the optical center (1950)
30- 31 I2 d ObsDay Day of observation
33- 34 I2 "month" ObsMon Month of observation
36- 39 I4 yr ObsYear Year of observation
41- 43 F3.1 h ObsTime Observation length
45- 46 I2 m BasMin Minimum baseline
48- 51 I4 m BasMax Maximum baseline
53- 55 I3 deg Phi Position angle of the resolution axis
57- 60 I4 km/s Vobs Radial velocity of the central channel
62- 64 F3.1 MHz BW Bandwidth of the observation
66- 70 F5.2 km/s DeltaV Velocity spacing of the channels (1)
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Note (1): The velocity resolution is twice this value
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Byte-by-byte Description of file: table3
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Bytes Format Units Label Explanations
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1- 9 A9 --- Name Galaxy name
11- 12 I2 arcmin l Integration length perpendicular to the
resolution axis
14- 16 I3 deg Phi Position angle of the resolution axis
18- 19 I2 arcsec Theta Half power beam width of the integrated
antenna pattern
21- 23 F3.1 mJy Noise Noise level in the position-velocity map
(mJy/beam)
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Byte-by-byte Description of file: table4
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Bytes Format Units Label Explanations
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1- 9 A9 --- Name Galaxy name
11- 13 I3 Jy.km/s FHI Total H I flux integral
15- 19 F5.2 10+9solMass MHI Total H I mass
21- 23 I3 kpc DHI H I isophotal diameter at the level
of 1 solMass/pc^2
25- 26 I2 kpc Reff H I effective radius, enclosing 50%
of the H I mass
28- 31 F4.1 solMass/pc2 mueff H I surface density at the H I
effective radius
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Byte-by-byte Description of file: table5
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Bytes Format Units Label Explanations
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2- 10 A9 --- Name Galaxy name
12- 15 I4 km/s Vsyst1 Systemic velocity determined from global
profiles with the method 1 (1)
19- 20 I2 km/s e_Vsyst1 Error on Systemic velocity
22- 24 I3 km/s LW201 H I linewidth determined from method 1 (1),
W20 (2)
28- 29 I2 km/s e_LW201 Error on W20 (2)
32- 34 I3 km/s LW501 ? H I linewidth determined from method 1 (1),
W50 (2)
38- 39 I2 km/s e_LW501 ? Error on W50 (2)
41- 44 I4 km/s Vsyst2 Systemic velocity determined from global
profiles with the method 2 (1)
48- 49 I2 km/s e_Vsyst2 Error on Systemic velocity
51- 53 I3 km/s LW202 H I linewidth determined from method 2 (1),
W20 (2)
57- 58 I2 km/s e_LW202 Error on W20 (2)
60- 62 I3 km/s LW502 H I linewidth determined from method 2 (1),
W50 (2)
66- 67 I2 km/s e_LW502 Error on W50 (2)
69- 72 I4 km/s Vsyst3 Systemic velocity determined from global
profiles with the method 3 (1)
76- 77 I2 km/s e_Vsyst3 Error on Systemic velocity
79- 81 I3 km/s LW203 H I linewidth determined from method 3 (1),
W20 (2)
85- 86 I2 km/s e_LW203 Error on W20 (2)
88- 90 I3 km/s LW503 H I linewidth determined from method 3 (1),
W50 (2)
94- 95 I2 km/s e_LW503 Error on W50 (2)
97-100 I4 km/s Vsyst4 Systemic velocity determined from global
profiles with the method 4 (1)
104-105 I2 km/s e_Vsyst4 Error on Systemic velocity
107-109 I3 km/s LW204 H I linewidth determined from method 4 (1),
W20 (2)
113-114 I2 km/s e_LW204 Error on W20 (2)
117-119 I3 km/s LW504 H I linewidth determined from method 4 (1),
W50 (2)
123-124 I2 km/s e_LW504 Error on W50 (2)
126-128 I3 km/s LW201c H I linewidth determined from method 1 (1),
W20 corrected for instrumental broadening (3)
136-138 I3 km/s LW501c ? H I linewidth determined from method 1 (1),
W50 corrected for instrumental broadening (3)
155-157 I3 km/s LW202c H I linewidth determined from method 2 (1),
W20 corrected for instrumental broadening (3)
164-166 I3 km/s LW502c H I linewidth determined from method 2 (1),
W50 corrected for instrumental broadening (3)
183-185 I3 km/s LW203c H I linewidth determined from method 3 (1),
W20 corrected for instrumental broadening (3)
192-194 I3 km/s LW503c H I linewidth determined from method 3 (1),
W50 corrected for instrumental broadening (3)
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Note (1): The HI profile linewidths are defined as the radial velocity
differences between the high and low velocity edges, measured
at the signal levels equal to 20 and 50% of:
Method 1: the peak flux of the profile (e.g. Tully 1988;
Bottinelli et al. 1990)
Method 2: the peak fluxes in each half of the profile, separately;
Method 3: the average of the peak fluxes in the two halves of
the profile (e.g. Sullivan et al. 1981; Bothun et al. 1985)
Method 4: the mean flux of the profile (e.g. Haynes and Giovanelli
1984; Bicay and Giovanelli 1986)
Note (2): W20 = the 20% level linewidth
W50 = the 50% level linewidth
Note (3): W_l_ = W_l,obs_ - F_l_(r) = W_l,obs_ + (a x l + b) x r
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Byte-by-byte Description of file: table6
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Bytes Format Units Label Explanations
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1- 9 A9 --- Name Galaxy name
11- 13 I3 km/s Vmax.sini Maximum rotation velocity, uncorrected for
inclination
17- 18 I2 km/s e_Vmax.sini Error on maximum rotation velocity,
uncorrected for inclination
20- 22 I3 km/s Vmax Maximum rotation velocity, corrected for
inclination
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References:
Bicay M.D., Giovanelli R., 1986, AJ 91, 705 =1986AJ.....91..705B
Bothun G.D., Aaronson M., Schommer R., et al., 1985, ApJS 57, 423
=1985ApJS...57..423B
Bottinelli L., Gouguenheim L., Fouque P., Paturel G., 1990, A&AS 82, 391
=1990A&AS...82..391B
Haynes M.P, Giovanelli R., 1984, AJ 89, 758 =1984AJ.....89..758H
Sullivan W.T.III., Bothun G.D., Bates B., Schommer R., 1981, AJ 86, 919
Tully R.B., 1988, Nearby Galaxies Catalog. Cambridge University Press,
Cambridge (CDS Catalog <VII/145>)
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(End) Simona Mei [CDS] 25-Sep-1995