J/A+A/417/499 Spectrophotometry of Virgo cluster galaxies (Gavazzi+, 2004)
Spectrophotometry of galaxies in the Virgo cluster. II: The data.
Gavazzi G., Zaccardo A., Sanvito G., Bonfanti C., Boselli A.
<Astron. Astrophys. 417, 499 (2004)>
=2004A&A...417..499G 2004A&A...417..499G
ADC_Keywords: Clusters, galaxy ; Galaxies, spectra ; Galaxies, photometry
Keywords: galaxies: clusters: individual: Virgo - techniques: spectroscopic -
catalogs
Abstract:
Drift-scan mode (3600-6800Å) spectra with 500<R<1000 resolution are
presented for 333 galaxies members to nearby clusters, covering the
whole Hubble sequence. The majority (225) were obtained for galaxies
in the Virgo cluster where a completeness of 36%, if all Hubble types
are considered, and of 5 %, restricting to late-types, was reached at
mp≤16. Our data can be therefore considered representative of the
integrated spectral properties of giant and dwarf galaxies in this
cluster. Intensities and equivalent widths (EWs) are derived for the
principal lines, both in emission and in absorption. Deblending of the
underlying absorption from emission was achieved in most cases.
Description:
Long-slit spectra of 333 galaxies, obtained during approximately 50
nights distributed in 6 years (1998-2003) using the 1.93m telescope
of the Observatoire de Haute Provence (OHP), the ESO 3.6m telescope,
the Loiano 1.52m telescope and the San Pedro Martir (SPM) 2.1m
telescope are presented. The observations were taken in the
"drift-scan" mode, i.e. with the slit, generally parallel to the
galaxy major axis, drifting over the optical surface of the galaxy.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table6.dat 124 339 Parameters of the observed galaxies
table7.dat 165 331 Emission lines properties
table8.dat 42 331 Balmer absorption lines
table9.dat 33 86 Absorption indices
spectra/* . 339 FITS spectra
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See also:
J/AJ/90/1681 : The Virgo Cluster Catalog (VCC) (Binggeli+, 1985)
J/A+AS/118/441 : Virgo + Fornax clusters galaxies UBVRI data (Schroeder+ 1996)
J/A+AS/121/507 : Near-IR surface photometry of Virgo galaxies (Boselli+ 1997)
J/A+AS/127/367 : Virgo Photometry Catalogue (VPC) (Young+ 1998)
J/A+A/343/86 : Virgo cluster radio luminosity function. I. (Gavazzi+ 1999)
J/A+A/396/449 : Hα surface photometry in Virgo (Gavazzi+, 2002)
J/A+A/401/471 : A1367, Coma and Virgo r' photometry (Cortese+, 2003)
J/A+A/402/37 : UV to radio SED of galaxies in Virgo cluster (Boselli+, 2003)
J/A+A/406/867 : Mid-IR galaxies in Virgo cluster. III. (Boselli+, 2003)
Byte-by-byte Description of file: table6.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Name Galaxy designation
10- 11 I2 h RAh Right ascension (J2000.0)
12- 13 I2 min RAm Right ascension (J2000.0)
14- 18 F5.2 s RAs Right ascension (J2000.0)
20 A1 --- DE- Declination sign (J2000.0)
21- 22 I2 deg DEd Declination (J2000.0)
23- 24 I2 arcmin DEm Declination (J2000.0)
25- 28 F4.1 arcsec DEs Declination (J2000.0)
31- 35 I5 km/s HV ? Heliocentric velocity (2)
37- 45 A9 --- Cluster Cluster membership (2)
47- 52 A6 --- MType Morphological type (2)
54 A1 --- Nuc [SLH-] Nuclei nature:
S=Seyfert, L=Liner, H=HII (2)
56- 60 F5.2 arcmin a ? Major B band optical diameter (2)
62- 66 F5.2 arcmin b ? Minor B band optical diameter (2)
68- 72 F5.1 Mpc Dist ? Distance (1)
74- 78 F5.2 mag Vmag ? Total apparent (uncorrected) V magnitude (2)
80- 84 F5.2 mag Bmag ? Total apparent (uncorrected) B magnitude (2)
86- 90 F5.2 mag Hmag ? Total apparent (uncorrected) H magnitude (2)
92- 94 A3 --- Run Observing run (2)
96 A1 --- q_Vmag [PTC] Photometric quality:
P: Photometric; T: Transparent; C: thin Cyrrus
98-100 I3 0.1nm/mm Disp ? Dispersion (2)
102 I1 --- Nexp Number of exposures (2)
104 A1 --- --- [x]
106-109 I4 s Time ? Individual exposure time (2)
111-124 A14 --- FITSfile Name of FITS file in "spectra" subdirectory (2)
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Note (1): We assume a distance of 17Mpc for the members
(and possible members) of Virgo cluster A, 22Mpc for Virgo cluster B,
32Mpc for objects in the M and W clouds. We adopt a distance of 65Mpc
for A262 and of 33Mpc for the Centaurus cluster; 51-74Mpc for the
Cancer cluster, according to the membership to the individual
sub-groups. Distances of 96 and 91.3Mpc are assumed for Coma and A1367
respectively. We adopt H0=75km/s/Mpc
Note (2): 10 galaxies having spectroscopic properties (tables 7,8,9)
were added in June 2004. These galaxies have no properties other
than their position in this table. These 10 galaxies are
VCC0324 VCC0334 VCC0355 VCC0562 VCC0841 VCC0848 VCC1226 VCC2037
Z097087 Z160241.
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Byte-by-byte Description of file: table7.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Name Galaxy designation
10 A1 --- l_C1 Limit flag on C1
11- 14 F4.2 --- C1 ? Balmer decrement C1
16 A1 --- l_[OII]3727 Limit flag on [OII]3727
17- 21 F5.2 --- [OII]3727 ? [OII]3727 flux normalized to Hα
23- 27 F5.2 --- Hdelta ? Hδ4101 flux normalized to Hα
29- 33 F5.2 --- Hgamma ? Hγ4340 flux normalized to Hα
35- 39 F5.2 --- Hbeta ? Hβ4861 flux normalized to Hα
41- 45 F5.2 --- [OIII]4959 ? [OIII]4959 flux normalized to Hα
47- 51 F5.2 --- [OIII]5007 ? [OIII]5007 flux normalized to Hα
53- 57 F5.2 --- [NII]6548 ? [NII]6548 flux normalized to Hα
59- 63 F5.2 --- Halpha ? Normalized Hα6563 flux
65- 69 F5.2 --- [NII]6584 ? [NII]6584 flux normalized to Hα
71- 75 F5.2 --- [SII]6717 ? [SII]6717 flux normalized to Hα
77- 81 F5.2 --- [SII]6731 ? [SII]6731 flux normalized to Hα
83 A1 --- l_EW[OII]3727 Limit flag on EW[OII]3727
84- 89 F6.2 0.1nm EW[OII]3727 ? [OII]3727 equivalent width
91- 96 F6.2 0.1nm EWHdelta ? Hδ4101 equivalent width
98-103 F6.2 0.1nm EWHgamma ? Hγ4340 equivalent width
105-110 F6.2 0.1nm EWHbeta ? Hβ4861 equivalent width
112-117 F6.2 0.1nm EW[OIII]4959 ? [OIII]4959 equivalent width
119-124 F6.2 0.1nm EW[OIII]5007 ? [OIII]5007 equivalent width
126-131 F6.2 0.1nm EW[NII]6548 ? [NII]6548 equivalent width
133-138 F6.2 0.1nm EWHalpha ? Hα6563 equivalent width
140-145 F6.2 0.1nm EW[NII]6584 ? [NII]6584 equivalent width
147-152 F6.2 0.1nm EW[SII]6717 ? [SII]6717 equivalent width
154-159 F6.2 0.1nm EW[SII]6731 ? [SII]6731 equivalent width
161-165 A5 --- Notes Notes (1)
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Note (1): Notes:
1: Hδ flux corrected for underlying absorption
2: Hγ flux corrected for underlying absorption
3: Hβ flux corrected for underlying absorption
4: Hα flux corrected for underlying absorption.
5: [NII] deblended from Halpha.
6: the [SII] doublet is blended. [SII]6717 is the sum of the two.
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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- 8 A8 --- Name Galaxy designation
10- 15 F6.2 0.1nm EWHdelta ? Hδ4101 equivalent width
17- 22 F6.2 0.1nm EWHgamma ? Hγ4340 equivalent width
24- 29 F6.2 0.1nm EWHbeta ? Hβ4861 equivalent width
32- 36 F5.2 0.1nm EWHalpha ? Hα6563 equivalent width
38- 42 A5 --- Notes Notes (1)
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Note (1): Notes:
1: Hδ lines measured at the position of the corresponding emission lines
2: Hγ lines measured at the position of the corresponding emission lines
3: Hβ lines measured at the position of the corresponding emission lines
4: Hα lines measured at the position of the corresponding emission lines
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Byte-by-byte Description of file: table9.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Name Galaxy designation
10- 13 F4.2 mag Delta4000 Calcium Break (4000) index
15- 18 F4.2 0.1nm EWG4300 ? G band (4283-4317) line strength
20- 23 F4.2 0.1nm EWHbeta ? Hβ (4849-4877) line strength
25- 28 F4.2 mag Mg2 Mg2 (5156-5197) metallicity index
30- 33 F4.2 0.1nm NaD ? NaD (5879-5911) index
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Acknowledgements: Giuseppe Gavazzi
History:
* 06-Feb-2002: First version by Giuseppe Gavazzi
* 26-Jun-2004: 10 galaxies appearing in tables 7-9 added to table6;
these 10 galaxies have empty parameters in table6 (see Note(2) above)
References:
Gavazzi et al., Paper I 2002ApJ...576..135G 2002ApJ...576..135G
(End) Giuseppe Gavazzi [Univ. Milano-Bicocca], Patricia Bauer [CDS] 10-Feb-2004