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J/ApJ/704/1586                BCGs with radio AGN                    (Sun, 2009)

Every BCG with a strong radio AGN has an X-ray cool core: is the cool core-noncool core dichotomy too simple? Sun M. <Astrophys. J., 704, 1586-1604 (2009)> =2009ApJ...704.1586S
ADC_Keywords: Clusters, galaxy ; Active gal. nuclei ; X-ray sources Keywords: cooling flows - galaxies: active - galaxies: clusters: general - radio continuum: galaxies - X-rays: galaxies - X-rays: galaxies: clusters Abstract: The radio active galactic nucleus (AGN) feedback in X-ray cool cores has been proposed as a crucial ingredient in the evolution of baryonic structures. However, it has long been known that strong radio AGNs also exist in "noncool core" clusters, which brings up the question whether an X-ray cool core is always required for the radio feedback. In this work, we present a systematic analysis of brightest cluster galaxies (BCGs) and strong radio AGNs in 152 groups and clusters from the Chandra archive. All 69 BCGs with radio AGN more luminous than 2x1023W/Hz at 1.4GHz are found to have X-ray cool cores. BCG cool cores can be divided into two classes: the large cool core (LCC) class and the corona class. As examples of the corona class, we also present detailed analyses of a BCG corona associated with a strong radio AGN (ESO 137-006 in A3627) and one of the faintest coronae known (NGC 4709 in the Centaurus cluster). File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 25 152 Sample of 152 groups and clusters table2.dat 130 55 Galaxies in the corona class with L1.4GHz>1024W/Hz AGNs
See also: B/chandra : The Chandra Archive Log (CXC, 1999-) II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003) VIII/65 : 1.4GHz NRAO VLA Sky Survey (NVSS) (Condon+ 1998) J/ApJS/195/15 : Luminosity profiles of BCGs (Donzelli+, 2011) J/A+A/425/367 : REFLEX Galaxy Cluster Survey catalogue (Boehringer+, 2004) J/AJ/125/478 : HST imaging of brightest cluster galaxies (Laine+, 2003) J/MNRAS/318/333 : Extended ROSAT Bright Cluster Sample (Ebeling+ 2000) J/ApJS/129/435 : NORAS galaxy cluster survey. I. (Bohringer+, 2000) J/MNRAS/306/857 : ROSAT Brightest Cluster Sample. III. (Crawford+, 1999) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 15 A15 --- Name System designation 17- 22 F6.4 --- z NED redshift 24- 25 I2 --- N The number of Chandra observation(s)
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 23 A23 --- Gal Galaxy name 25- 35 A11 --- Name Cluster name 37- 41 F5.2 [Lsun] logLKs 2MASS Ks-band luminosity of the galaxy (1) 43- 47 F5.2 [W/Hz] logL1.4 1.4GHz luminosity of the galaxy (2) 49 A1 --- l_Lx Limit flag on Lx 50- 54 F5.3 10+34W Lx The rest-frame 0.5-2keV luminosity in unit of 1041erg/s 56- 60 F5.3 10+34W E_Lx ? Positive error in Lx 62- 66 F5.3 10+34W e_Lx ? Negative error in Lx 68- 71 F4.2 keV kT ? Plasma temperature 73- 76 F4.2 keV E_kT ? Positive error in kT 78- 81 F4.2 keV e_kT ? Negative error in kT 83 A1 --- f_kT [o] o: other kT value (0.81±0.08keV) 85-123 A39 --- Note Note (3) 124 A1 --- u_LAGN [~] Uncertainty flag on LAGN 125-130 E6.2 10-7W LAGN ? The AGN luminosity (measured in the rest frame 0.5-10keV), if it is higher than 1041erg/s
Note (1): 2MASS Ks band luminosity of the galaxy as shown as log(LKs/L), with MK☉=3.39mag. Note (2): 1.4GHz luminosity of the galaxy from NVSS (Cat. VIII/65) or SUMSS (Sydney University Molonglo Sky Survey (SUMSS, Cat. VIII/81; Bock et al. 1999AJ....117.1578B)), assuming a spectral index of -0.8. Note (3): brightest cluster galaxies are marked as "BCG". Most of the non-BCGs are NAT (narrow-angle tail) sources. "code 3" refers to "soft X-ray sources" defined in Sun et al., 2007ApJ...657..197S, and Section 3.
History: From electronic version of the journal
(End) Emmanuelle Perret [CDS] 28-Nov-2011
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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