J/A+AS/137/495 Halpha Catalogue of HCG Galaxies (Severgnini+, 1999)
An Hα catalogue of galaxies in Hickson Compact Groups. I. The Sample
Severgini P., Garilli B., Saracco P., Chincarini G.
<Astron. Astrophys. Suppl. Ser. 137, 495 (1999)>
=1999A&AS..137..495S 1999A&AS..137..495S (SIMBAD/NED BibCode)
ADC_Keywords: Galaxies, photometry ; Photometry, H-alpha
Keywords: galaxies: clusters: general - galaxies: evolution -
galaxies: interaction
Abstract:
We present Hα photometry for a sample of 95 galaxies in Hickson
Compact Groups (Cat. VII/213) obtained from observations of 31
groups. The Catalogue lists isophotal and adaptive aperture (Kron
aperture) flux measurements for about 75% of the accordant galaxies
inside the observed HCGs, 22 out of which are upper limits. Non
standard data reduction procedures have been used to obtain the
continuum subtracted Hα images for each HCG of the target
sample. Flux calibration has also been performed in order to obtain
Hα luminosities for the whole sample. Both the data reduction
and calibration procedures are carefully described in the paper.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
galaxies.dat 27 73 Galaxy positions
table7.dat 70 73 Hα isophotal Fluxes and Luminosities
table8.dat 47 73 Isophotal corrected and Kron fluxes
table9.dat 41 22 Upper limits to flux and luminosity
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See also:
VII/213 : Hickson Compact Groups of Galaxies (Hickson 1982)
Byte-by-byte Description of file: galaxies.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- HCG Hickson galaxy designation
5- 6 I2 h RAh Right ascension (J2000.0)
8- 9 I2 min RAm Right ascension (J2000.0)
11- 14 F4.1 s RAs Right ascension (J2000.0)
16 A1 --- DE- Declination sign (J2000.0)
17- 18 I2 deg DEd Declination (J2000.0)
20- 21 I2 arcmin DEm Declination (J2000.0)
23- 24 I2 arcsec DEs Declination (J2000.0)
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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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2- 4 A3 --- HCG Hickson galaxy designation
7- 10 F4.2 10-13mW/m2 F1 Flux uncorrected for galactic and
internal extinction
13- 16 F4.2 10-14mW/m2 e_F1 Error on F1
19- 25 F7.2 10+31W L1 Luminosity uncorrected for galactic and
internal extinction (1038erg/s)
28- 33 F6.2 10+31W e_L1 Error on L1
36- 39 F4.2 10-13mW/m2 F2 Flux corrected for galactic extinction
42- 45 F4.2 10-14mW/m2 e_F2 Error on F2
48- 52 F5.2 10-13mW/m2 F3 Flux corrected for Galactic and
internal extinction (1)
55- 61 F7.2 arcsec+2 Area Isophotal area
64- 70 F7.2 --- S/N Signal to noise ratio
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Note (1): Values of -1.00 indicate that the galaxies is not a spiral galaxy and
the value of F3 is not needed for it
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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- 3 A3 --- HCG Hickson galaxy designation
12- 16 F5.3 10-13mW/m2 Fisocor Isophotal corrected flux
23- 27 F5.3 10-14mW/m2 e_Fisocor Error on fisocor
31- 36 F6.3 10-13mW/m2 Fkron ?=-1.00 Kron flux
42- 47 F6.3 10-14mW/m2 e_Fkron ?=-1.00 Error on fkron
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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- 3 A3 --- HCG Hickson galaxy designation
10- 17 F8.6 10-13mW/m2 Fup Flux at 3σ from bkg
20- 25 F6.4 10-14mW/m2 e_Fup Error on Fup
29- 33 F5.2 10+31W Lup Luminosity at 3σ
38- 41 F4.1 10+31W e_Lup Error on Lup
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Acknowledgements: Paola Severgnini
(End) Patricia Bauer [CDS] 18-May-1999