RBS0004: Bright underlying galaxy, weak OIII5007/4959 in emission, XID uncertain
RBS0021: RPVS, XID changed (STAR)
RBS0022: Outburst magnitude given
RBS0027: high PM, XID from appearance on DSS
RBS0030: Optical spectrum resembles that of normal galaxy without emission lines, enhanced flux at wavelengths shortward the Ca-break, much too high X-ray luminosity for a normal galaxy, no X-ray extent and no obvious cluster on DSS2, XID as weak BL Lac or XTG (like RBS1135(=IC3599) or RBS1583) possible, HR1 more suggestive of the former, since the latter typically have soft spec
RBS0032: Optical coordinate revised: 8 18 37, tentative redshift measured (24102003)
RBS0037: high PM
RBS0044: high PM
RBS0051: (24102003) redshift added
RBS0062: Sy1 in cluster ACO S 0047
RBS0063: (24102003) redshift added
RBS0064: XID uncertain due to relatively large CaII break, X-ray source might be a NELG at RA=00 27 13.7, DEC=-27 08 56 with z=0.062
RBS0065: One redshift measured of galaxy at specified optical position
RBS0075: A spectrum of only one galaxy was obtained, XID tentative, no X-ray extent in RASS, XID as BL Lac also possible
RBS0077: XID changed (Sy)
RBS0088: WPVS 07 can also be regarded as X-ray transient galaxy
RBS0096: L. Wisotzki (priv. comm.)
RBS0097: XID as cluster not excluded, although RASS-data show no X-ray extent
RBS0112: XID changed (Sy)
RBS0114: The NED gives an id as normal galaxy referencing to the LCRS (Shectman et al.~1996), inspection of the spectrum made available by D. Tucker shows weak emission lines suggestive of an AGN nature
RBS0123: The star visible on the DSS at the given optical position is an unresolved (apparent) binary, the fainter component is a dMe, the likely X-ray source, the brighter a G star
RBS0126: Only one redshift taken, XID tentatively
RBS0138: XID from appearance on DSS
RBS0145: Coordinates and redshift for the (cD;E+3 pec ) galaxy ESO 541- G 013 given
RBS0150: Redshift due to Wisotzki (priv. comm.), DSS shows nearby, probably interacting companion galaxies
RBS0162: Wisotzki, priv. comm.
RBS0172: Mean of two redshifts given
RBS0178: Redshift measured for galaxy at RA=01 18 11.2, DEC=-26 58 12
RBS0181: Two redshifts measured, z=0.0508 for RA=01 20 58.5, DEC=-13 51 00, and z=0.0488 for the galaxy at RA=01 20 52.0, DEC=-13 51 16
RBS0207: XID unc, 2 close objects
RBS0214: (24102003) redshift corrected from z=-0.0179 to -179 km/s, z=-0.0006
RBS0216: Sy-galaxy in interacting group
RBS0228: BS, CO, high PM
RBS0230: Sy-galaxy in interaction with NELG at RA=01 40 28.8, DEC=-66 29 39
RBS0231: finding chart wrong
RBS0238: The redshift given is the mean of three, RA/DEC/Mag for the galaxy nearest the X-ray position
RBS0243: Tentative XID based on visual inspection of DSS
RBS0256: XID with GSC 01757-01936, a K4 star is also possible
RBS0259: (24102003) redshift added
RBS0263: XID changed (AGN)
RBS0269: BS
RBS0285: (24102003) redshift added
RBS0295: Remillard, priv. comm.
RBS0310: CO
RBS0311: CO, large positional unc, XID with G 94-B5B (white dwarf) possible from positional coincidence, but hard X-ray spectrum is suggestive of the XID as given
RBS0312: Mean of two redshifts given
RBS0316: A Sy galaxy and a cluster of galaxies (Abell S0261) as possible counterparts from NED correlation, no X-ray extent measured
RBS0321: SIMBAD lists only the F3IV/V star, Fleming identified the WD as companion and XID
RBS0325: Mean of two redshifts given
RBS0329: CO
RBS0333: BS
RBS0334: (24102003) redshift added
RBS0373: BS
RBS0378: Detection of 40 photons in 67 sec during the RASS, the source was not detected during a PSPC-survey repair pointing and a later HRI- pointing, tentative identification as X-ray transient
RBS0380: Mean of two redshifts given
RBS0387: Redshift (col.~13) of galaxy at optical position (cols.~2-3) given, the NED lists a second galaxy with redshift 0.2613 at RA=03 07 01.4, DEC=-28 41 21
RBS0397: Wisotzki, priv. comm.
RBS0405: (24102003) redshift added
RBS0408: (24102003) redshift changed from 0.703 to 0.0701 (a typo discovered by A. Edge)
RBS0419: Our XID, based on Maza et al.~(1989), differs from that given by Thomas et al.~(1997), who identify ESO 301-G13 (Sy1, z=0.064) at a distance of 67 arcsec as optical counterpart
RBS0431: Abell 3128, the same counterpart to RBS0432
RBS0432: Abell 3128b, the same counterpart to RBS0431
RBS0436: The group is overshone by two rather bright stars, the optical position given is that of a Sy1.9 galaxy
RBS0441: SIMBAD also gives a classification as [MPP88] 0331-373, a Sy1 galaxy at the same optical position
RBS0445: Low S/N spectrum which does not allow to determine the subtype and the redshift
RBS0447: Two redshifts taken near the center of the X-ray emission
RBS0453: L. Wisotzki (priv. comm.)
RBS0456: The central dominant galaxy of the cluster is a Sy2 galaxy, X-ray emission is extended, therefore likely XID as cluster, not as AGN
RBS0485: The NED lists only a single galaxy, not a group or cluster. X-ray extent measured in RASS-data, XID as cluster likely, with the galaxy as likely member
RBS0496: XID with GJ 157B (Sp M2) also possible)
RBS0507: NED lists also Abell 3223 at the X-ray position with the same redshift. The Seyfert galaxy probably belongs to the cluster, no significant X-ray extent
RBS0526: The identification spectrum is blue und featureless, indicative of a BL Lac nature, but rather faint due to the faintness of the source. The galaxy north of the BL Lac candidate has a weak Seyfert nucleus and a contribution to the observed X-ray flux cannot be excluded.
RBS0528: BS
RBS0531: XID uncertain. The optical image shows a galaxy, whose spectrum has a strong O[II]3727 emission line, weak Balmer H(beta) emission and a flat blue continuum shortward of 3700 Angstrom (rest wavelength). The X-ray image is slightly extended.
RBS0545: (24102003) redshift added
RBS0552: XID not fully convincing because of large distance between X-ray and optical positions, a star-like object within the X-ray error circle at RA=04 35 14.4, DEC=-46 15 33 has not yet been observed but might be the true counterpart
RBS0571: XID as GJ 174.1B, a M0.5 star (V=12.5 mag), also possible
RBS0589: (24102003) redshift added
RBS0599: Optical coordinates wrong in SIMBAD, used are the original coordinates by Thomas et al.~1997
RBS0602: (24102003) redshift added
RBS0607: Sy1 galaxy in group or cluster, three redshifts taken
RBS0632: XID as 4U 0513-40, a LMXB possible, but X-ray source extended
RBS0656: ID based on inspection of DSS
RBS0679: (24102003) redshift added
RBS0691: XID changed (AGN (BLL) in GC)
RBS0695: XID changed (ULX)
RBS0697: AGN in cluster, unknown to RASS, X-ray emission
RBS0701: BS
RBS0703: high proper motion star, the X-ray source therefore lies in a blank field on POSS plates, recent Schmidt plates show the star within the X-ray error circle (D. Engels, priv. comm.)
RBS0705: BS, EB
RBS0716: high PM
RBS0721: BS
RBS0730: high PM
RBS0735: Bade, priv. comm.
RBS0737: Bade, priv. comm.
RBS0745: XID changed (AGN), Sy-galaxy in cluster, X-ray source extended, XID therefore cluster
RBS0752: XID changed (BLL)
RBS0755: BS, high PM
RBS0780: Bade, priv. comm.
RBS0788: BS
RBS0797: XID changed with respect to Paper I (A. Edge, priv. comm.)
RBS0804: The identification spectrum has a strong galaxy component, DSS shows more faint galaxies, XID as cluster possible, although no significant X-ray extent was detected in the RASS-data
RBS0808: (24102003) redshift corrected from z=-0.0034 to -34 km/s, z=-0.0001
RBS0814: BS
RBS0820: high PM
RBS0825: GLS
RBS0828: BS
RBS0835: CO
RBS0840: high PM
RBS0844: The identification spectrum has a strong galaxy component, DSS shows more faint galaxies, XID as cluster possible, although no significant X-ray extent was detected in the RASS-data
RBS0858: XID changed (GC)
RBS0864: XID changed (AGN in GC)
RBS0867: Bade, priv. comm.
RBS0868: BS, CO
RBS0871: CO (STAR and Sy), X-ray source is extended, it is most likely a blend of two pointlike sources, the bright star HD 90748 (Sp F8) and the Sy-galaxy; the Sy-galaxy has a companion at RA=10 29 03.4, DEC=+27 27 40 with the same redshift
RBS0886: PM
RBS0899: XID changed (AGN in GC)
RBS0900: Bade, priv. comm.
RBS0903: Bade, priv. comm.
RBS0906: AGN in GC
RBS0913: CO, A contribution to the X-ray flux from the nearby Sy2 galaxy at RA=10 51 51.2, DEC=+21 37 59 (z=0.0529) is possible
RBS0915: Mean of two redshifts given
RBS0922: high PM
RBS0928: RPVS
RBS0935: high PM
RBS0946: CO
RBS0964: BS, CO
RBS0969: high PM, ID based on inspection of DSS
RBS0973: Alternative XID possible: SZ Crt, Sp K4/K5V(By Dra), RA=11 21 26.6, DEC=-20 27 13, mV=8.61
RBS0989: Bade, priv. comm.
RBS0999: CO
RBS1000: XID changed (BLL: in GC)
RBS1015: mean of three redshifts given
RBS1020: The dominant galaxy at RA=11 41 24.1, DEC=-12 16 39 observed by us has a Sy1.8 spectrum
RBS1026: XID changed (GC with AGN (Sy))
RBS1029: XID changed (AGN (BLL) in GC)
RBS1032: Greiner, priv. comm.
RBS1047: Bade, priv. comm.
RBS1067: BS
RBS1068: (24102003) redshift added
RBS1073: existence of source unc
RBS1075: Bade, priv. comm.
RBS1082: VIRGO according to RBS 1.0
RBS1085: XID changed (QSO), VIRGO according to RBS 1.0
RBS1089: VIRGO according to RBS 1.0
RBS1094: XID changed (AGN)
RBS1097: BS, VIRGO according to RBS 1.0
RBS1104: VIRGO according to RBS 1.0
RBS1112: Bade, priv. comm.
RBS1113: XID changed (Sy1)
RBS1118: VIRGO according to RBS 1.0
RBS1128: VIRGO according to RBS 1.0
RBS1129: VIRGO according to RBS 1.0
RBS1136: VIRGO according to RBS 1.0
RBS1137: Bade, priv. comm.
RBS1140: Miller, priv. comm.
RBS1150: XID changed (GC), VIRGO according to RBS 1.0
RBS1191: BS, PM
RBS1192: BS
RBS1210: XID changed (AGN in GC)
RBS1213: high PM
RBS1214: Bade, priv. comm.
RBS1227: GLS
RBS1259: Miller, priv. comm.
RBS1266: XID changed (AGN (BLL) in GC)
RBS1267: XID changed (AGN (BLL) in GC), Mean of two redshifts given, a third nearby galaxy RA=13 26 17.5, DEC=+12 29 18 does not belong to the cluster (z=0.1478)
RBS1276: XID changed (AGN (LINER) in GC), The identification spectrum is that of a faint normal galaxy at z=0.15. The X-ray source is not obviously extended (XID not cluster), the extreme softness of the X-ray spectrum suggests a possible XID as X-ray transient galaxy (accretion event onto a SMBH)
RBS1300: The nearby companion galaxy at RA=13 40 38.1, DEC=+40 36 28 has same redshift
RBS1302: AGN (BLL) in GC, BLL and nearby cluster ABELL 1774 have almost same redshift, no RASS X-ray extent, XID as BLL likely
RBS1307: (24102003) new observation: type Sy --> Sy1, redshift 0.176 --> 0.171
RBS1310: Bade, priv. comm.
RBS1317: Miller, priv. comm.
RBS1319: IC 4329A + ABELL 3574, negligible X-ray extent, XID as AGN likely
RBS1321: XID changed (GC), spurious ROSAT detection, Chandra does not sh, UGC 08738 is an absorption line galaxy (Thorstensen et al.~1995), a possible member of Abell 1800, the X-ray source does not show an obvious sign of an extent, the X-ray luminosity is too high to be compatible with a normal absorption line galaxy, an XID as weak BL Lac could be possible
RBS1322: AGN in GC (CCC), not resolved by ROSAT, PMN J1350+0940 possibly in cluster, X-ray extended
RBS1324: XID (based on NED correlation) is uncertain due to large separation between optical and X-ray position and the missing X-ray extent
RBS1327: Featureless blue discovery spectrum with low S/N; FIRST J135326.1+362049, a QSO with z=0.284, is offset by 80 arcsec from the X-ray position, probably too far away
RBS1338: RPVS
RBS1345: Miller, priv. comm.
RBS1353: Nearby stars at RA=14 09 18.7, DEC=+13 52 59 (Sp F) and RA=14 09 18.1, DEC=+13 52 38 (Sp K) not the XID
RBS1357: XID changed (AGN in GC)
RBS1372: The Seyfert-galaxy resides in an interacting group
RBS1374: Miller, priv. comm.
RBS1376: Greiner, priv. comm.
RBS1385: Two redshifts were taken of galaxies at RA=14 23 51.6, DEC=+40 15 32 (z=0.0829) and RA=14 23 51.4, DEC=+40 14 16 (z=0.0817)
RBS1402: Bade, priv. comm.
RBS1419: GC with AGN
RBS1423: XID changed (Sy1), XMM revises X-ray position, An optically bright, extreme blue Sy1 galaxy at RA=14 44 14.7, DEC=+06 33 7 (V=16.2, z=0.208) might also contribute to the X-ray emission
RBS1428: The discovery spectrum is that of a normal absorption line galaxy with weak H(alpha) emission; no other obvious possible optical counterpart nearby; the extreme softness of the X-ray spectrum is suggestive of an X-ray transient galaxy
RBS1429: Chandra confirms GC at revised position, Bade et al.~(1998) identify this source as an AGN. This XID is probably, we took two spectra of absorption line galaxies with almost same redshift, suggestive of an XID as cluster of galaxies
RBS1433: A nearby NELG (RA=14 48 26.7, DEC=+35 59 53) with same redshift, interaction
RBS1443: GC with AGN
RBS1444: Optical position given in NED probably wrong, no object on DSS at given position
RBS1446: GC with AGN
RBS1453: XID changed (AGN)
RBS1466: XID changed (QSO)
RBS1472: BS, EB
RBS1475: Although the optical spectrum is suggestive of a HII galaxy, the occurrence of an X-ray outburst during the RASS makes the presence of a SMBH likely (Komossa \& Bade 1999)
RBS1479: XID changed (AGN in GC), creates Persius like cavity
RBS1500: Sy1 in ABELL 2072, X-ray emission point-like, probably mainly from the Sy-galaxy
RBS1504: A contribution from HD 139777, a V=6.6 star (G0IV-V+.) at RA=15 29 11.1, DEC+80 26 54, appears to be likely
RBS1508: Strong galaxy contribution to the discovery spectrum, companion galaxy (RA=15 32 4.1, DEC=+30 15 49) at same redshift, XID as cluster unlikely due to missing X-ray extent but not completely excluded
RBS1509: GC (CCC), Classified as LINER in Paper I. A. Edge (priv. comm.) confirms its cluster nature with the optical line emission originating from the cooling flow
RBS1512: Possible contribution to the X-ray flux from a nearby dMe star (RA=15 33 44.1, DEC=+69 00 55)
RBS1521: Bade, priv. comm.
RBS1526: two extragalactic objects are found among several faint foreground stars, which are most likely not the counterparts of the X-ray source: the first is the NELG galaxy at the position and with the redshift as given in the table, the second is an absorption line galaxy at RA=15 42 36.6, DEC=+58 11 52 with a redshift of z=0.23. This observation might be suggestive of a gala
RBS1527: AGN with similar redshift close, CO
RBS1533: The NED lists at almost the same position an unspecified AGN (no type, no redshift)
RBS1540: A Sy2 galaxy belonging to the cluster lies at RA=15 56 14.4, DEC=+66 20 56; the X-ray source is clearly extended, XID as cluster
RBS1546: z unc (BS GC), CO
RBS1547: (24102003) AG Dra correctly identified as symbiotic binary
RBS1551: XID changed (BLL), XID uncertain due to the faintness of the star
RBS1553: GC (CCC)
RBS1554: GC with central point source
RBS1560: The nearby radio source FIRST J160714.6+340229 of unknown nature could also be the X-ray source
RBS1583: The discovery spectrum shows features of a normal absorption line galaxy; Grupe, Thomas \& Leighly (1999) propose an XTG-nature of this object caused by an accretion event onto a SMBH
RBS1588: GC with AGN
RBS1623: NED Sy2, SIMBAD Sy1
RBS1632: GC with AGN
RBS1634: GC with AGN
RBS1636: The galaxy at RA=17 18 12.1, DEC=+56 39 56 is a Sy1 galaxy. X-ray emission extended, XID as cluster
RBS1637: BS, CO
RBS1639: GC with AGN, GLS
RBS1641: GLS
RBS1643: XID changed (AGN in GC)
RBS1680: A spectrum of the object at RA=20 31 51.2, DEC=-40 36 53.7, was taken. It is a faint G or K star without further sign of X-ray activity, not regarded as XID; slight X-ray extent observed in RASS, cluster candidate, privately confirmed by H.~B\"ohringer and J.~Retzlaff (REFLEX cluster survey)
RBS1691: Two redshifts taken, the first of the galaxy with coordinates as given in the table (z=0.098), the second at RA=20 41 46.4, DEC=-37 36 21 (z=0.109).
RBS1697: Spectra were taken of the objects at optical position (RA,DEC) (20 45 12.8, -40 48 54), (20 45 11.2, -40 48 33), (20 45 16.0, -40 48 53), (20 45 14.5, -40 48 25.9). All objects are rather faint F or G stars, not the XID. Possible XID with GSC 07967-01203 at RA=20 45 11.5, DEC=-40 49 57, a V=10.7 mag star
RBS1705: SIMBAD lists a star of spectral type F8, the soft X-ray spectrum suggests an undetected white dwarf as XID, (24102003) SIMBAD lists a star of spectral type F8, the soft X-ray spectrum suggests an undetected white dwarf as XID
RBS1719: Three redshifts measured
RBS1728: Alternative XID as GJ 818.1 or GJ 9719
RBS1737: IR-excess, ID correct/unique?
RBS1743: Three redshifts measured
RBS1748: Two redshifts measured
RBS1751: (24102003) redshift added
RBS1752: (24102003) redshift added
RBS1756: Sy-galaxy interacting with nearby NELG at RA=21 32 02.8, DEC=-33 42 01 (z=0.0293)
RBS1769: (24102003) redshift added
RBS1774: XID changed (INS)
RBS1779: Possible contribution to the X-ray flux from a nearby Sy-galaxy (z=0.211) at RA=21 46 27.2, DEC=-47 48 25
RBS1791: (24102003) redshift added
RBS1818: optical position changed to 22 04 17.5, -42 58 14, according to Beuermann et al. 1999
RBS1819: XID changed (AGN in GC)
RBS1831: Two redshifts measured
RBS1842: A background Sy-galaxy (z=0.2379) lies in a foreground cluster of galaxies (two redshifts, z=0.136), X-ray emission extended, XID as cluster
RBS1843: BS, high PM
RBS1844: (24102003) redshift added
RBS1846: Grupe (priv. comm.) pointed to the transient nature of the source
RBS1851: redshift z=0.1544 according to NED
RBS1861: Two redshifts measured of galaxies at (22 25 51.4, -06 35 52) and (22 25 50.5, -06 36 05)
RBS1864: Not a completely convincing XID, the (noisy) spectrum of the faint galaxy at the given optical position does not show any obvious hallmark of an X-ray source, the soft X-ray colour makes this source similar to other XTGs, XID as (weak, hidden) BLL possible; the second object near the X-ray position at RA=22 28 00.3, DEC=-41 57 07 is a faint K star, definitely not the X-r
RBS1885: close visual binary (BS)
RBS1888: SIMBAD cites the XID given in our Paper I incorrectly
RBS1898: redshift z=0.252 according to NED
RBS1899: (24102003) redshift added
RBS1915: (24102003) redshift added
RBS1929: XID rests on one measured redshift of a galaxy at the given optical position, the X-ray extent measured, and the galaxy pair listed in the NED at (23 00 59.9, +06 45 02) at z=0.0402
RBS1947: Spectra of objects at (23 07 26.3, -17 56 24), a faint K star, and at (23 07 20.2, -17 56 28) an F star (=GSC 06398-00470, V=11.0) were taken. These are not regarded as XID, due to their faintness or their large distance from the X-ray position
RBS1972: No cluster is catalogued, no observation by us. RASS X-ray extent and inspection of DSS showing several galaxies around suggest the XID
RBS1985: Two redshifts taken of galaxies at (23 19 40.6, -73 13 36) and (23 19 37.9, -73 14 44)
RBS1991: Possible/likely contribution from the nearby cluster ABELL 3995, RA=23 21 35.3, DEC=-69 41 33, z=0.1864, V=17.3/10, RASS source not extended
RBS2000: (24102003) redshift added
RBS2018: XMM confirms position, BS, Possible contribution to RASS X-ray flux from CCDM J23319+1956C and D
RBS2023: The NED cites wrong coordinates for CTS 69 when compared with the original reference; CTS 69 is somewhat off the X-ray position, the celestial body right at the nominal position of the X-ray source is an absorption line galaxy with z=0.0963, not the XID
RBS2028: GC with central point source
RBS2029: GC with point source
RBS2030: GC with central AGN
RBS2035: Wrong classification in NED (normal galaxy)
RBS2042: Three redshifts taken
RBS2057: The cluster is centered 2 arcmin away from the X-ray position, the X-ray source is not obviously extended, regard the Sy as XID
RBS2061: Interacting group of galaxies
This page is maintained by Axel Schwope
(aschwope@aip.de).
last edited: July 15, 2015