C.D.S. - SIMBAD4 rel 1.8 - 2024.04.25CEST18:50:41 ACO 1644 --------- Object ACO 1644 --- ClG --- OID=@4488021 (@@-1,255) --- coobox=15588 Coordinates(ICRS,ep=J2000,eq=2000): 12 57 11.6 -17 24 34 (~) D [~ ~ ] 2007MNRAS.379..260M Coordinates(FK4,ep=B1950,eq=1950): 12 54 32.8 -17 08 21 Coordinates(Gal,ep=J2000,eq=2000): 304.8888 +45.4404 hierarchy counts: #parents=0, #children=304, #siblings=0 Proper motions: ~ ~ [~ ~ ] ~ ~ Parallax: ~ [~] ~ ~ Radial Velocity: 13759 [~] D 2021A&A...652A..12K Redshift: 0.0470 [~] D 2021A&A...652A..12K cz: 14090 [~] D 2021A&A...652A..12K Flux Spectral type: ~ ~ ~ Morphological type: ~ ~ ~ Angular size: 23.333333969 23.333333969 0 (Xray) E 2021A&A...652A..12K Identifiers (24): XCLASS 23 PSZRX G304.88+45.45 RXC J1257.1-1724 BAX 194.3115-17.3535 1A 1254-16 1H 1255-172 1RXS J125710.0-172345 2E 2909 3A 1254-171 ACO 1644 ClG 1254-1706 H 1256-171 RBS 1187 XSS J12575-1727 [F81] 251 [S85] 215 1ES 1254-17.1 2E 1254.5-1708 RX J1257.1-1724 PLCKESZ G304.89+45.45 MCXC J1257.1-1724 PSZ1 G304.91+45.46 2MAXI J1257-173 PSZ2 G304.91+45.43 Bibcodes 1850-2024 () (366): 2024A&A...682A.147M 2024ApJ...961..185L 2023A&A...669A.133E 2023A&A...670A.104M 2023A&A...673A..91D 2023ApJ...952..105G 2023ApJ...954...56O 2023MNRAS.518..878R 2023MNRAS.521.1292P 2022A&A...657L...1E 2022A&A...662A.123E 2022A&A...665A..71O 2022A&A...666A..41E 2022ApJ...932...64B 2022ApJ...933...84F 2022ApJ...940..140C 2022ApJ...941..114J 2022MNRAS.509.2869R 2022MNRAS.514..518V 2022MNRAS.515..581M 2021A&A...646A..92G 2021A&A...652A..12K 2021ApJ...910...56T 2021ApJ...911...82C 2021ApJ...914...58A 2021ApJ...922...81U 2021MNRAS.500..310D 2021MNRAS.501.3767S 2020A&A...636A..15M 2020A&A...637A..54D 2020A&A...638A..27Q 2020ApJ...894...60L 2020ApJ...895..143N 2020MNRAS.494..271C 2020MNRAS.495.2007M 2020MNRAS.495.2022D 2020MNRAS.495.4392N 2019A&A...621A..39E 2019A&A...621A..40E 2019A&A...621A..41G 2019A&A...626A...7T 2019A&A...626A..48R 2019A&A...627A..19G 2019A&A...628A..43K 2019A&A...630A.121B 2019ApJ...875..141P 2019ApJ...882..119Z 2019ApJ...887...31A 2019MNRAS.483..540L 2019MNRAS.484.2807L 2019MNRAS.489..349R 2019RAA....19..104Z 2018A&A...609A.133C 2018ApJ...858...45M 2018ApJ...868..121D 2018ApJS..238...32K 2018MNRAS.474.1342M 2018MNRAS.478.5473L 2017A&A...599A..83M 2017A&A...599A.138Z 2017A&A...606A.108C 2017A&A...607A..81B 2017ApJ...843...76A 2017ApJ...851...66H 2017MNRAS.464.3169Y 2017MNRAS.467.1449J 2017MNRAS.467.1478J 2017MNRAS.467.2766G 2017MNRAS.468.1917R 2017MNRAS.468.3322S 2017MNRAS.469.3738S 2017MNRAS.471.1370S 2017MNRAS.471.2952M 2016A&A...588A.103B 2016A&A...594A..27P 2016MNRAS.455..892G 2016MNRAS.457.4515R 2015A&A...575A..30S 2015A&A...575A.127P 2015A&A...581A..11M 2015A&A...581A..14P 2015A&A...581A.126S 2015A&A...582A..79I 2015ApJ...798...90Z 2015ApJ...799...47Z 2015ApJ...805....3E 2015MNRAS.447.2915M 2015MNRAS.450.3675S 2014A&A...566A..32F 2014A&A...571A..29P 2014A&A...572A..87D 2014ARep...58..587B 2014ApJ...787...18A 2014ApJ...792...45R 2014MNRAS.438...49R 2014MNRAS.438.2341P 2014MNRAS.444..808G 2014MNRAS.444.1236P 2014MNRAS.444L..63F 2013A&A...550A.131P 2013A&A...560A..64H 2013ApJ...764...46F 2013ApJ...770...56G 2013ApJ...771..137M 2013ApJS..207...36H 2013MNRAS.429.2069D 2013MNRAS.431.2933L 2013MNRAS.433.3290P 2012ApJ...746...94G 2012ApJ...746..139A 2012ApJ...746..153M 2012ApJ...748...67W 2012ApJ...749...19K 2012ApJ...755..116L 2012ApJ...760...67R 2012ApJS..199...23H 2012MNRAS.420.1481V 2012MNRAS.421.3409H 2012MNRAS.425..477N 2012MNRAS.427.2047T 2012MNRAS.427.3468B 2011A&A...526A..79E 2011A&A...526A.105Z 2011A&A...527A.134M 2011A&A...530A..24B 2011A&A...532A.133M 2011A&A...534A.109P 2011A&A...536A...7P 2011A&A...536A...8P 2011A&A...536A..11P 2011A&A...536A..34V 2011ApJ...726...69A 2011ApJ...731...33M 2011ApJ...734...95M 2011ApJ...743...15M 2011ApJS..195...15D 2011MNRAS.412..246V 2011MNRAS.413..921V 2011MNRAS.413.2057R 2011MNRAS.418.1089C 2011MmSAI..82..573B 2011PASJ...63S.677H 2010A&A...510A..82L 2010A&A...510A..83R 2010A&A...511A..15L 2010A&A...513A..37H 2010A&A...516A..32G 2010ARep...54..696K 2010ApJ...710.1776J 2010ApJ...711.1316M 2010ApJ...717..908Z 2010ApJ...719L..74K 2010ApJ...721.1262M 2010MNRAS.404.1490F 2009A&A...495..707C 2009A&A...497..667V 2009A&A...501..835M 2009A&A...501..851V 2009A&A...508..565D 2009ApJ...691.1307H 2009ApJ...692..702O 2009ApJ...692.1033V 2009ApJ...704.1349O 2009ApJ...704.1586S 2009ApJS..182...12C 2009ApJS..184..138H 2009MNRAS.395....2P 2009MNRAS.398..133L 2008ApJ...685..875D 2008MNRAS.385.2097R 2008MNRAS.391.1009L 2008MNRAS.391.1341M 2007A&A...466..805C 2007A&A...470...39R 2007AstL...33..355B 2007MNRAS.379..260M 2007PhR...443....1M 2006A&A...445..805F 2006A&A...450....9F 2006MNRAS.367..527B 2006MNRAS.373..881P 2006MNRAS.373..959D 2005A&A...442..827F 2005A&A...444..387D 2005MNRAS.364.1343D 2005MNRAS.364.1354B 2004A&A...418..927R 2004A&A...424.1097S 2004A&A...425..367B 2004AJ....128.1078R 2004AJ....128.1558S 2004AJ....128.2022R 2004ApJ...601..610V 2004ApJ...607..202M 2004ApJ...608..179R 2004ApJ...610..745L 2004ApJ...612..797F 2004ApJ...613..811M 2004ApJ...617..867D 2004ApJ...617..879L 2003AJ....126.2740L 2003ApJ...588..155R 2003MNRAS.342..901S 2002A&A...383..773I 2002AJ....123...66Y 2002AJ....123...87Y 2002AJ....124.1266R 2002AJ....124.1918M 2002ApJ...567..716R 2002ApJ...569..720G 2002AstL...28..793V 2001AJ....121.2271S 2001AJ....122.1289T 2001AJ....122.2222E 2001ARep...45..581B 2001ApJ...554L.129M 2001ApJ...561L..41R 2001MNRAS.325...77P 2000A&A...361...13A 2000A&A...362..809B 2000A&AS..141..385V 2000AN....321....1S 2000ApJ...530...62G 2000ApJ...533...62R 2000ApJ...533L..93B 2000ApJS..126....1Q 2000ApJS..129..547B 1999A&A...344..749F 1999AJ....118.1506B 1999ApJ...511...65J 1999ApJ...520..507B 1999ApJ...520L...5L 1999ApJ...524...22W 1998A&A...331..439A 1998A&A...338..813W 1998AJ....115...26R 1998ApJ...496..693R 1998ApJ...504...27M 1998ApJ...505...74G 1998MNRAS.298..416P 1998PPMtO..17b...1Y 1997A&AS..123..119E 1997AJ....113...80K 1997AJ....114.1297H 1997ApJ...479..621H 1997ApJ...482...41G 1997ApJ...490..577D 1997ApJS..108...41O 1997MNRAS.284..286D 1997MNRAS.289..787E 1997MNRAS.292..419W 1996AJ....111...53O 1996AN....317...77B 1996ApJ...457...61G 1996ApJ...459...27G 1996ApJ...465..534G 1996ApJ...473..670F 1996MNRAS.279..349D 1996MNRAS.281..799E 1995A&A...300..711A 1995A&AS..113..451K 1995AJ....109...14O 1995AJ....109..853L 1995AJ....110..463Q 1995AJ....110.1959L 1995AN....316..319B 1995ApJ...438..527G 1995ApJ...440...28P 1995ApJ...445L..81B 1995ApJ...447....8M 1995ApJ...452L..99K 1995ApJ...453...40B 1995ApJS...99..405C 1995MNRAS.274..623M 1994A&A...290..725P 1994A&AS..106....1G 1994AJ....108....1S 1994ARA&A..32..277F 1994ApJ...423..539E 1994ApJ...425..418L 1994ApJS...95..401P 1994MNRAS.269..301E 1993AJ....105.1596B 1993AJ....106.1273Z 1993AJ....106.1301Z 1993AJ....106.1314Z 1993ApJ...402..398S 1993ApJ...404...38G 1993ApJ...407..489W 1993ApJ...410....1S 1993ApJ...411L..13B 1993ApJ...412..479D 1993ApJ...415L..17L 1993ApJS...87..135O 1993PASJ...45L..13M 1992A&A...259..423C 1992A&A...266..127A 1992AJ....103.1051H 1992AJ....103.1721R 1992AN....313...21B 1992AN....313..275B 1992AcA....42..253U 1992ApJ...384..404P 1992ApJ...396...35B 1992ApJS...80..257E 1992MNRAS.258..177E 1991A&A...246..301R 1991A&A...252...13N 1991A&AS...91..513R 1991AJ....101.1561P 1991ApJ...372..410H 1991ApJS...77..363S 1991MNRAS.248..101R 1991MNRAS.249..662P 1991MNRAS.250..103E 1991MNRAS.250..607P 1991MNRAS.252..394D 1990A&A...237..283V 1990ApJ...350...36W 1990ApJS...74....1Z 1990MNRAS.242..478M 1990MNRAS.245..559E 1990RMxAA..21...61S 1989AJ.....97.1279S 1989AN....310....7B 1989ApJ...346...34T 1989ApJ...347..610W 1989ApJS...70....1A 1989MNRAS.238..881L 1989Natur.342..251R 1988AJ.....95..284D 1988AJ.....95..985D 1987A&A...183..217R 1987AJ.....94..899D 1987ApJ...323....1T 1987ApJS...63..543S 1987ApJS...63..555S 1986Ap&SS.118..529T 1986ApJ...300..557B 1985AJ.....90.1413B 1985AJ.....90.1648H 1985ApJ...294...70D 1985ApJS...57...77S 1984ApJ...279..511S 1984ApJS...56..507W 1983ApJ...271..442S 1983ApJ...273..167W 1983ApJ...274..491B 1983PASAu...5..114S 1982A&A...107..338B 1982A&A...108L...7S 1982AJ.....87....7S 1982Ap&SS..82....3A 1982ApJ...253..485P 1982PASP...94..421G 1981MNRAS.196..409C 1981MNRAS.197..893M 1981SvA....25..647F 1980ApJ...236..351D 1980ApJ...241..486H 1980ApJ...241..493H 1980ApJ...242..857H 1979ApJS...40..657M 1978MNRAS.183p..51R 1974AJ.....79..427O 1971ApJS...23..371S Measures (velocities:4 XMM:2 ): velocities:4XMM:2 Notes (1) : (S) 09-Aug-2006 - dc ref:~ obj:~ sometimes designated DC 26 (26th cluster in 1980ApJS...42..565D, table 1). ================================================================================