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Table 3.

Groups and clusters which are members of the Local SC.

Name RA Dec Redshift FX Error LX m200 rout nH Alt. name
RXCJ1226.2+1257 186.5540 12.9577 0.0033 (a) 34.2216 3.80 0.0166 0.295 17.5 2.6 M86
RXCJ1230.7+1223 187.6838 12.3915 0.0033 371.7451 1.20 0.1792 1.291 17.5 2.5 M87 (Virgo)
RXCJ1242.8+0241 190.7098 2.6884 0.0031 16.6059 8.50 0.0112 0.231 10.5 1.8 NGC 4636
RXCJ1501.1+0141 225.2994 1.6981 0.0061 13.1537 6.30 0.0267 0.396 8.5 4.2 NGC 5813
RXCJ1506.4+0136 226.6237 1.6022 0.0062 8.2915 13.80 0.0111 0.230 13.0 4.3 NGC 5846

Notes. The flux, FX, is in units of 10−12 erg s−1 cm−2 in the 0.1–2.4 keV band and the error in the following column is in per cent. The X-ray luminosity, LX, is in units of 1044 erg s−1 at 0.1 to 2.4 keV within r500, m200 is the cluster mass estimated from the LX-mass relation within r200, rout is the radius in arcmin out to which the X-ray luminosity is detected in the RASS, and nH is the interstellar column density in the line-of-sight in units of 1020 cm−2. In the last column we designate groups by the name of the central dominant galaxy.

(a)

M86 has a blueshift in a heliocentric reference system of about 223 km s−1. Here we give as a distance measure the redshift of the Virgo cluster, to which M86 belongs.

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