J/MNRAS/383/1519 Abell 1367 HI sources from AGES (Cortese+, 2008)
The Arecibo Galaxy Environment Survey.
II. A HI view of the Abell cluster 1367 and its outskirts.
Cortese L., Minchin R.F., Auld R.R., Davies J.I., Catinella B., Momjian E.,
Rosenberg J.L., Taylor R., Gavazzi G., O'Neil K., Baes M., Boselli A.,
Bothun G., Koribalski B., Schneider S., Van Driel W.
<Mon. Not. R. Astron. Soc., 383, 1519-1537 (2008)>
=2008MNRAS.383.1519C 2008MNRAS.383.1519C
ADC_Keywords: Surveys ; Clusters, galaxy ; Radio sources ; H I data
Keywords: surveys - galaxies: clusters: individual: A1367 -
galaxies: evolution - galaxies: peculiar - radio lines: galaxies
Abstract:
We present 21cm HI line observations of 5x1deg2 centred on the local
Abell cluster 1367 obtained as part of the Arecibo Galaxy Environment
Survey. One hundred sources are detected (79 new HI measurements and
50 new redshifts), more than half belonging to the cluster core and
its infalling region. Combining the HI data with Sloan Digital Sky
Survey (SDSS) optical imaging, we show that our HI selected sample
follows scaling relations similar to the ones usually observed in
optically selected samples. Interestingly, all galaxies in our sample
appear to have nearly the same baryon fraction independently of their
size, surface brightness and luminosity. The most striking difference
between HI and optically selected samples resides in their
large-scale distribution: whereas optical and X-ray observations trace
the cluster core very well, in HI there is almost no evidence of the
presence of the cluster. Some implications on the determination of the
cluster luminosity function and HI distribution for samples selected
at different wavelength are also discussed.
Description:
As part of the AGES, we observed the Abell 1367 region in 2006 May and
2007 April using the ALFA feed array at the 305-m Arecibo Telescope.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 93 100 HI parameters for the 100 sources detected in
the Abell 1367 cube
table2.dat 57 22 HI parameters for the 22 sources observed with
L-wide and confirmed
table3.dat 75 109 List of optical counterparts for the 100 HI
sources in A1367
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See also:
J/AJ/140/1093 : NGC7332/7339 and NGC 1156 HI sources from AGES (Minchin+, 2010)
J/MNRAS/415/1883 : NGC 7448 HI sources from AGES (Davies+, 2011)
http://www.naic.edu/~ages/public_data.html : AGES databases
http://www.sdss.org : SDSS Home Page
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 4 A4 --- --- [AGES]
6- 19 A14 --- AGES AGES designation (JHHMMSS+DDMMSS)
21- 22 I2 h RAh HI Right ascension (J2000)
24- 25 I2 min RAm HI Right ascension (J2000)
27- 30 F4.1 s RAs HI Right ascension (J2000)
32- 34 F3.1 s e_RAs rms uncertainty on RA
36 A1 --- DE- HI Declination sign (J2000)
37- 38 I2 deg DEd HI Declination (J2000)
40- 41 I2 arcmin DEm HI Declination (J2000)
43- 44 I2 arcsec DEs HI Declination (J2000)
46- 47 I2 arcsec e_DEs rms uncertainty on Declination
49- 53 I5 km/s HV Heliocentric velocity (G1)
55- 56 I2 km/s e_HV rms uncertainty on HV
58- 60 I3 km/s W50 Velocity width of the source line profile
measured at the 50% level of peak maximum (G2)
62- 63 I2 km/s e_W50 rms uncertainty on W50
65- 67 I3 km/s W20 Velocity width of the source line profile
measured at the 20% level of peak maximum (G2)
69- 70 I2 km/s e_W20 rms uncertainty on W20
72- 75 F4.1 mJy Fpeak Peak flux density at 21cm
77- 79 F3.1 mJy e_Fpeak rms uncertainty on Fpeak
81- 84 F4.2 Jy.km/s Ftot Total flux at 21cm
86- 89 F4.2 Jy.km/s e_Ftot rms uncertainty on Ftot
91- 93 A3 --- Flag Detection confidence (3)
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Note (3): Object flag, defined as follows:
0 = sources detected by all the three independent methods used
for source extraction making them reliable sources
1 = objects confirmed only after L-wide follow-up observations
2 = objects which are contaminated by RFI: they are in general sure
detections but the HI parameters (e.g. flux, velocity width,
etc.) can be strongly affected and should not be used.
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 A4 --- --- [AGES]
6- 19 A14 --- AGES AGES designation (JHHMMSS+DDMMSS)
21- 25 I5 km/s HV Heliocentric velocity (G1)
27- 28 I2 km/s e_HV rms uncertainty on HV
30- 32 I3 km/s W50 Velocity width of the source line profile
measured at the 50% level of peak maximum (G2)
34- 35 I2 km/s e_W50 rms uncertainty on W50
37- 39 I3 km/s W20 Velocity width of the source line profile
measured at the 20% level of peak maximum (G2)
41- 42 I2 km/s e_W20 rms uncertainty on W20
44- 47 F4.2 Jy.km/s Ftot Total flux at 21cm
49- 52 F4.2 Jy.km/s e_Ftot rms uncertainty on Ftot
54- 57 F4.2 mJy rms ms noise per channel at 10km/s velocity
resolution
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 4 A4 --- --- [AGES]
6- 19 A14 --- AGES AGES designation (JHHMMSS+DDMMSS)
21- 44 A24 --- OName Optical counterpart name
46- 47 I2 h RAh ? Optical Right ascension (J2000)
49- 50 I2 min RAm ? Optical Right ascension (J2000)
52- 56 F5.2 s RAs ? Optical Right ascension (J2000)
58 A1 --- DE- Optical Declination sign (J2000)
59- 60 I2 deg DEd ? Optical Declination (J2000)
62- 63 I2 arcmin DEm ? Optical Declination (J2000)
65- 68 F4.1 arcsec DEs [0/60]? Optical Declination (J2000)
70- 74 I5 km/s Vopt ? Optical recessional velocity
75 A1 --- n_Vopt [*] new optical redshift obtained in 2007 (1)
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Note (1): new optical redshift obtained in 2007 Winter
using the Loiano 1.5m telescope.
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Global notes:
Note (G1): Measured as the mid-point between the velocities where the flux
density reaches 50% of peak maximum level.
Note (G2): The velocity widths are not corrected for instrumental broadening,
turbulent motions, disc inclination or cosmological effects.
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References:
Auld et al., Paper I 2006MNRAS.371.1617A 2006MNRAS.371.1617A
Minchin et al., Paper III 2010AJ....140.1093M 2010AJ....140.1093M, Cat. J/AJ/140/1093
Davies et al., Paper IV 2011MNRAS.415.1883D 2011MNRAS.415.1883D, Cat. J/MNRAS/415/1883
History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 05-May-2008