J/A+A/416/515 Starbursts in barred spiral galaxies. VI. (Davoust+, 2004)
Starbursts in barred spiral galaxies.
VI. HI observations and the K-band Tully-Fisher relation.
Davoust E., Contini T.
<Astron. Astrophys. 416, 515 (2004)>
=2004A&A...416..515D 2004A&A...416..515D
ADC_Keywords: Galaxies, Markarian ; Galaxies, IR ; H I data ; Radial velocities
Keywords: galaxies: starburst - galaxies: active - galaxies: evolution -
galaxies: ISM - galaxies: kinematics and dynamics -
radio lines: galaxies
Abstract:
This paper reports a study of the effect of a bar on the neutral
hydrogen (HI) content of starburst and Seyfert galaxies. We also make
comparisons with a sample of "normal" galaxies and investigate how
well starburst and Seyfert galaxies follow the fundamental scaling
Tully-Fisher (TF) relation defined for normal galaxies. 111 Markarian
(Mrk) IRAS galaxies were observed with the Nancay radiotelescope, and
HI data were obtained for 80 galaxies, of which 64 are new detections.
We determined the (20 and 50%) linewidths, the maximum velocity of
rotation and total HI flux for each galaxy. These measurements are
complemented by data from the literature to form a sample of Mrk IRAS
(74% starburst, 23% Seyfert and 3% unknown) galaxies containing 105
unbarred and 113 barred ones. Barred galaxies have lower total and
bias-corrected HI masses than unbarred galaxies, and this is true for
both Mrk IRAS and normal galaxies. This robust result suggests that
bars funnel the HI gas toward the center of the galaxy where it
becomes molecular before forming new stars. The Mrk IRAS galaxies have
higher bias-corrected HI masses than normal galaxies. They also show
significant departures from the TF relation, both in the B and K
bands. The most deviant points from the TF relation tend to have a
strong far-infrared luminosity and a low oxygen abundance. These
results suggest that a fraction of our Mrk IRAS galaxies are still in
the process of formation, and that their neutral HI gas, partly of
external origin, has not yet reached a stationary state.
Description:
The observations were obtained at the large decimetric radiotelescope
of Nancay Observatory. Three runs (a total of 281h) were allocated for
the barred subsample in 1993-94, and six runs (214h) for the unbarred
subsample in 1996-99. We observed a total of 111 galaxies, and
detected 80 (+ one companion), of which 64 are new detections.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table4.dat 46 17 Galaxies with the strongest deviations from the
K-band TF relation
table5.dat 60 106 HI data for Markarian galaxies observed at the
Nancay Radiotelescope
table6.dat 86 218 Integrated quantities for the Mrk IRAS galaxies
--------------------------------------------------------------------------------
See also:
J/A+AS/130/285 : Sample of starburst nucleus galaxies (Contini+ 1998)
Byte-by-byte Description of file: table4.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1 A1 --- Type [BU] B: Barred Galaxies, U: Unbarred Galaxies
3- 6 I4 --- Mrk Galaxy name
8- 10 A3 --- SpType spectral type
12- 15 F4.2 --- O/H ? Oxygen abundance
17- 21 F5.2 [solLum] logFIR log of far infrared luminosity (1)
23- 27 F5.2 --- DMHI Excess of HI mass (1)
29- 34 F6.3 [km/s] DlogVm Difference between log of observed and
expected Vm (maximum velocity of rotation)
36- 46 A11 --- Envir Environment
--------------------------------------------------------------------------------
Note (1): Means values:
Barred Galaxies : logFIR = 10.21, DMHI = 0.30
Unbarred Galaxies : logFIR = 10.13, DMHI = 0.33
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table5.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 A8 --- Name Galaxy name (Mrk or UGC)
10- 13 F4.1 --- TType ? Morphological type
16- 17 I2 deg Incl ? Inclination
21- 25 I5 km/s HRV Heliocentric radial velocity
26 A1 --- r_HRV [)] ) when from LEDA
28- 29 I2 km/s e_HRV ? Uncertainty on heliocentric radial velocity
31- 34 F4.1 mJy rms rms noise
36- 39 F4.1 --- SNR ? Signal-to-noise ratio
41- 43 I3 km/s W20 ? Linewidth at 20% of maximum intensity
45- 47 I3 km/s W50 Linewidth at 50% of maximum intensity
48 A1 --- u_W50 [)] ) when W50 estimated (1)
50 A1 --- l_FHI Upper limit on HI flux density
51- 55 F5.2 Jy.km/s FHI HI flux density
57- 60 F4.2 Jy.km/s e_FHI ? uncertainty on HI flux density
--------------------------------------------------------------------------------
Note (1): When no line was detected, the listed W50 was estimated from
the Tully-Fisher relation and is given in brackets.
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table6.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 I4 --- Mrk Galaxy name
6- 7 A2 --- Bar bar/no bar
9- 11 A3 --- SpType spectral type
13- 16 F4.1 --- MType Morphological type
18- 21 F4.1 deg Incl Inclination
23- 27 F5.3 [0.1arcmin] logdc log of isophotal diameter
29- 33 F5.3 [0.1arcmin] e_logdc Uncertainty on log of isophotal diameter
35- 39 F5.3 [km/s] logVm log of maximum velocity of rotation
41- 45 F5.3 [km/s] e_logVm Uncertainty on log of maximum velocity of
rotation
47- 51 F5.1 Mpc Dist Distance
53- 57 F5.2 mag Kmag ?=0 K-band magnitude
59- 62 F4.2 --- O/H Oxygen abundance
64- 68 F5.2 [solMass] logMHI log of total HI mass
70- 73 F4.2 [solMass] e_logMHI Uncertainty on log of HI mass
75- 79 F5.2 [solLum] logFIR log of far infrared luminosity
81- 86 F6.2 mag BMAG Absolute B magnitude
--------------------------------------------------------------------------------
Acknowledgements: Emmanuel Davoust
References:
Contini et al., Paper I 1995A&A...303..440C 1995A&A...303..440C
Contini et al., Paper II 1997A&A...324...41C 1997A&A...324...41C
Contini et al., Paper III 1998A&AS..130..285C 1998A&AS..130..285C, Cat. J/A+AS/130/285
Considere et al., Paper IV 2000A&A...356...89C 2000A&A...356...89C
Chapelon et al., Paper V 1999A&A...345...81C 1999A&A...345...81C
(End) Patricia Bauer [CDS] 12-Mar-2004