LMCROSXRAY - ROSAT PSPC Catalog of LMC X-Ray Sources (Haberl & Pietsch)
The source identification recommended by the CDS Dictionary of Nomenclature of Celestial Objects, where the HEASARC has prefixed the running number given in the original computer-readable table with the acronym 'HP99'.
The right ascension of the X-ray source in the specified equinox. In the original table the RA was given in equinox 2000 and with a precision of 0.1 seconds of time.
The declination of the X-ray source in the specified equinox. In the original table this was given in equinox 2000 and with a precision of 1 arcsecond.
The galactic longitude.
The galactic latitude.
The likelihood of existence (the maximum value from the five detection energy bands).
The vignetting-corrected net exposure time in seconds.
The statistical (90% confidence) error in the X-ray position in arcsec. (There is an additional systematic uncertainty of about 7 arcsec in the position.)
The PSPC 0.1-2.4 keV count rate, in counts per second.
The error in the count rate, in counts per second.
The hardness ratio HR1, defined as HR1 = (H-S)/(H+S), where S and H are the count rates in the 0.1-0.4 keV and 0.5-2.0 keV bands, respectively. This is not calculated in cases where not all of the required count rates are available.
The error in the hardness ratio HR1 (hardness_ratio_1).
The hardness ratio HR2, defined as HR2 = (H2-H1)/(H1+H2), where H1 and H2 are the count rates in the 0.5-0.9 keV and 0.9-2.0 keV bands, respectively. This is not calculated in cases where not all of the required count rates are available.
The error in the hardness ratio HR2 (hardness_ratio_2).
The X-ray source extent derived from the same detection as for the source position, in arcsec.
The likelihood for the extent.
The ROSAT observation identifier.
The Off-axis angle of the X-ray source, in arcmin.
The distance to the detector window support structure or the detector rim, in units of the FWHM of the instrument resolution at the position of the X-ray source in the detector.
The catalog source number.
Remarks about the X-ray source: abbreviations for references given in parenthesis are as follows:
ABM72 1972A&AS....6..249A Ardeberg et al. C97 1997AJ....113.1815C Chu CMG93 1993ApJ...414..213C Chu et al. CS98 1998AN....319..101C Chu & Snowden CCH84 1984ApJ...286..196C Cowley et al. CSM97 1997PASP..109...21C Cowley et al. CGC97 1997AJ....114.2353C Crampton et al. Cat. <J/AJ/114/2353> CMN98 1998IAUC.6861R...1C Cusumano et al. DBC94 1994ApJS...93..455D Dopita et al. DEM76 1976MmRAS..81...89D Davies et al. DWS97 1997PASP..109..345D Downes et al. Cat. <V/94> FHW98 1998A&AS..130..421F Filipovic et al. Cat. <J/A+AS/130/421> FD73 1973A&AS...10..231F Fehrenbach & Duflot GGO93 1993A&AS...99..591G Gochermann et al. Cat. <J/A+AS/99/591> GH90 1990PASP..102..849G Gurwell & Hodge GOG97 1997A&AS..121..247G Grothues et al. Cat. <J/A+AS/121/247> HP99 1999A&A...344..521H Haberl & Pietsch HPD95 1995A&A...303L..49H Haberl et al. JJA91 1991A&A...252..229J Jaschek et al. LHG81 1981ApJ...248..925L Long et al. MCC98 1998ApJ...493..260M Mac Low et al. MHH96 1996ApJS..106..341M Moran et al. O94 1994A&AS..106..257O Olsen Cat. <J/A+AS/106/257> O97 1997A&A...325L...1O Orio et al. PMA95 1995MNRAS.274.1165P Pye et al. Cat. <J/MNRAS/274/1165> SCF94 1994PASP..106..843S Schmidtke et al. SCL94 1994AJ....108.1266S Smith et al. SEL95 1995AJ....110.1993S Sanders et al. Cat. <J/AJ/110/1993> T80 1980ApJS...44....1T Twarog WHHW91 1991ApJ...374..475W Wang et al. WH91 1991ApJ...373..497W Wang & Helfand WBB87 1987MNRAS.227..705W White et al. WBA91 1991MNRAS.248..398W White et al. WCD97 1997ApJ...480..618W Williams et al.
Insecure identifications from positional uncertainty begin with '?' in the remark. Candidates from literature are marked with '?' after the source class name. Other abbreviations are as follows:
SEP: in pointing near south ecliptic pole, GSC: HST guide star catalogue (Lasker et al., 1990, ADS Cat. I/220), NED: NASA/IPAC extragalactic database, operated by the Jet Propulsion Laboratory , California Institute of Technology, under contract with the National Aeronautics and Space Administration fg: foreground, var: X-ray variable, const: X-ray constant.