J/MNRAS/357/819 Colours and HI line observations in Virgo (Sabatini+, 2005)
The dwarf low surface brightness galaxy population of the Virgo Cluster -
II. Colours and HI line observations.
Sabatini S., Davies J., Van Driel W., Baes M., Roberts S., Smith R.,
Linder S., O'neil K.
<Mon. Not. R. Astron. Soc., 357, 819-833 (2005)>
=2005MNRAS.357..819S 2005MNRAS.357..819S
ADC_Keywords: Clusters, galaxy ; Galaxies, photometry ; H I data
Keywords: galaxies: clusters: individual: Virgo Cluster - galaxies: dwarf
Abstract:
In order to investigate the nature of dwarf low surface brightness
(LSB) galaxies we have undertaken a deep B- and I-band CCD survey of a
14-deg2 strip in the Virgo Cluster and applied a Fourier convolution
technique to explore its dwarf galaxy population down to a central
surface brightness of ∼26Bmag/arcsec2 and a total absolute B
magnitude of ~-10. In this paper we carry out an analysis of their
morphology, (B-I) colours and atomic hydrogen content.
Description:
The optical data that we use in this paper are part of the 2.5-m Isaac
Newton Telescope Wide Field Camera (INT WFC) survey of the Virgo
Cluster (see paper I, Sabatini et al., 2003MNRAS.341..981S 2003MNRAS.341..981S, for
further details). Here we present results from the west-east B- and
i-band strip in the cluster, extending from the centre of the cluster
(identified as M87) eastwards for 7°, with a total area of
14deg2. This region of the cluster is part of the dynamical unit
named cluster A (M87), excluding members of other units like cluster
B, clouds M and W.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table3.dat 80 236 Objects not detected in H I at Arecibo
--------------------------------------------------------------------------------
See also:
J/ApJS/128/99 : HST photometry of 4 Virgo LSB galaxies (O'Neil+, 2000)
J/A+A/428/823 : HI catalog of low surface brightness galaxies (O'Neil+, 2004)
J/A+A/365/1 : HI observations of LSB galaxies (Matthews+, 2001)
J/A+A/405/99 : LSB galaxies in near-infrared. I. (Monnier-Ragaigne+, 2003)
J/A+A/408/67 : LSB galaxies in near-infrared. II. (Monnier-Ragaigne+, 2003)
J/A+A/408/465 : LSB galaxies in near-infrared. III. (Monnier-Ragaigne+, 2003)
Byte-by-byte Description of file: table3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 3 I3 --- [SDV2005] ? Sequential number
5- 11 A7 --- Name Identification from other catalogues (1)
13- 14 I2 h RAh Right ascension (J2000.0)
16- 17 I2 min RAm Right ascension (J2000.0)
19- 20 I2 s RAs Right ascension (J2000.0)
22 A1 --- DE- Declination sign (J2000.0)
23- 24 I2 deg DEd Declination (J2000.0)
26- 27 I2 arcmin DEm Declination (J2000.0)
29- 30 I2 arcsec DEs Declination (J2000.0)
32- 39 A8 --- TType Morpholigical T type
41- 44 F4.1 mag Btmag Total apparent blue magnitude
46- 49 F4.1 mag/arcsec2 SuBrB ? Central blue surface brightness
51 I1 arcsec alphaB ? Disc scalelength
53- 56 F4.1 mag B-Ic ? Johnson-Cousins B-I colour index
58- 61 F4.1 mJy rms ?=- rms noise level of H I spectrum
63 A1 --- l_IHI Limit flag on IHI
64- 67 F4.1 Jy.km/s IHI ? Estimated 3 sigma upper limit to the
integrated H I line flux, for assumed
75km/s wide flat-topped profiles
69 A1 --- l_MHI Limit flag on MHI
70- 73 F4.1 10+7solMass MHI ? Estimated upper limit to the H I mass,
at the assumed 16Mpc distance of the
Virgo Cluster
75 A1 --- l_MHI/LB Limit flag on MHI/LB
76- 80 F5.1 Sun MHI/LB ? Estimated upper limit to H I mass to blue
luminosity ratio
--------------------------------------------------------------------------------
Note (1): tNNN = [TH2002] NNN in Simbad
--------------------------------------------------------------------------------
History:
* 04-Nov-2005: From electronic version of the journal
* 27-Jan-2006: table3, #111: name changed from VCC1717 into VCC1794.
(VCC1717 is #181)
References:
Sabatini et al., Paper I 2003MNRAS.341..981S 2003MNRAS.341..981S
(End) Patricia Vannier [CDS] 04-Nov-2005