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## (from tabmap V6.0 (2016-08-18)) 2024-04-25T23:54:15 #--------------------------------------------------------------------------- #-- J/A+AS/146/251 Open clusters absolute proper motions. I. (Baumgardt+, 2000) #-------------------------------------------------------------------------- #---Table: J/A+AS/146/251/./notes.dat Individual notes (192 records) # Name A9 --- Cluster Name # Note A70 --- Text of the note -------------------------------------------------------------------------------- Name |Note ---------|---------------------------------------------------------------------- Ber 59 |The star cluster Ber 59 is embedded in the gas and dust complex Ber 59 |Sharpless 171/NGC 7822. It is called NGC 7822 by some authors, but we Ber 59 |prefer Lynga's notation. Col 121 |HIP 33316, HIP 33846, HIP 34444, HIP 34489 and HIP 34954 are Col 121 |non-members due to their large angular distance from the cluster Col 121 |centre. On the basis of their proper motions, they may be part of an Col 121 |unbound association of stars which shares the same kinematics Col 121 |as Col 121. Col 132 |It is not clear whether this is a true star cluster, see Claria Col 132 |(1977A&AS...27..145C) and Eggen (1983AJ.....88..197E). Members and Col 132 |non-members are taken from Baumgardt (1998A&A...340..402B). Col 135 |There is some discussion in the literature about the existence of this Col 135 |cluster. The Hipparcos (<I/239>) data strongly supports its reality, Col 135 |see Baumgardt (1998A&A...340..402B). Members and non-members are taken Col 135 |from this work. Col 140 |The membership of HIP 35905 in this cluster is well established (see Col 140 |for example Williams, 1978MNRAS.183...49W and Jenkner & Maitzen, Col 140 |1987A&AS...71..255J). Nevertheless its proper motion deviates strongly Col 140 |from the other members. We therefore did not use it to determine the Col 140 |mean cluster motion. Col 197 |There is an apparent clustering of possible members in the TRC Col 197 |Catalogue (<I/250>) near ({mu}_{alpha}_*/{mu}_{delta}_)=(-3/9)mas/yr. Col 197 |Since the proper motion of HIP 42908 is Col 197 |({mu_{alpha}_*/{mu}_{delta}_)=(-6.85+/-0.82/3.22+/-0.87)mas/yr Col 197 |it cannot be a member. Col 359 |The most recent study of this cluster was made by Rucinski Col 359 |(1987PASP...99..487R), who found 9 probable members and a distance Col 359 |modulus of V-M_V_=8.2mag. Seven of the possible members are included Col 359 |in the Hipparcos Catalogue, but only two share a common proper motion. Col 359 |Three other Hipparcos stars may be additional cluster members, but the Col 359 |reality of the cluster seems doubtful. Col 394 |Concerning the membership of BB Sgr (HIP 92491) see the discussion in Col 394 |the text. HM 1 |The cluster Havlen-Moffat 1. Hog 14 |It is not clear whether this cluster exists, see Moffat & Vogt Hog 14 |(1973A&AS...10..135M). According to these authors, HIP 60863 could be Hog 14 |a member if the cluster is real. IC 1848 |The Hipparcos proper motion of HIP 13308 is incompatible with the IC 1848 |assumption of cluster membership. The star is nevertheless almost IC 1848 |certainly a cluster member on the basis of its radial velocity (Liu IC 1848 |et al., 1991AJ....102.1103L) and UBV photometry. In addition its TRC IC 1848 |proper motion is close to that of the other members. We therefore IC 1848 |consider HIP 13308 to be a member but have not used it to derive IC 1848 |the mean cluster motion. IC 2395 |The Hipparcos stars show no evidence for a clustering. There is IC 2395 |however a clustering of the possible members in the TRC Catalogue IC 2395 |near ({mu}_{alpha}_*/{mu}_{delta}_)=(-4/1)mas/yr. Keeping this in IC 2395 |mind, we made the classification of the Hipparcos stars. IC 2944 |HIP 56134, HIP 56890, HIP 56961 and HIP 57057 are not considered to be IC 2944 |cluster members due to their large angular distance from the cluster IC 2944 |centre. On the basis of their proper motions, they may be part of an IC 2944 |unbound association of stars which shares the kinematics of IC 2944. IC 4665 |HIP 86944 and HIP 87184 are almost certainly members on the basis of IC 4665 |their radial velocity, ground-based proper motion (Prosser, 1993, IC 4665 |Cat. <J/AJ/105/1441>) and photometry. In addition their TRC proper IC 4665 |motions are consistent with cluster membership. The most likely IC 4665 |explanation is that the Hipparcos proper motions are disturbed by IC 4665 |binary effects. They were not used to determine the mean cluster IC 4665 |motion. Mel 227 |Mel 227 + NGC 1252: These are not open clusters, see the discussion Mel 227 |in Baumgardt (1998A&A...340..402B). NGC 1252 |See Mel 227 NGC 654 |HIP 7936 is regarded as a possible member since it has a 92% NGC 654 |membership probability in the proper motion study of Stone NGC 654 |(1977A&A....54..803S). NGC 1647 |Concerning the membership of SZ Tau (HIP 21517) see the discussion in NGC 1647 |the text. NGC 1907 |Glushkova & Rastorguev (1991PAZh...17..149G) found several giants with NGC 1907 |V-magnitudes between 11.9 and 12.5 mag to be cluster members. Except NGC 1907 |for HIP 25599, all Hipparcos stars are therefore too bright to be NGC 1907 |cluster members. HIP 25599 may be a cluster member in the blue NGC 1907 |straggler phase. NGC 2129 |The existence of this cluster is doubtful, see Pena & Peniche NGC 2129 |(1994RMxAA..28..139P). However, the radial velocities (Liu et al., NGC 2129 |1991AJ....102.1103L) and the proper motions of the two Hipparcos stars NGC 2129 |agree with each other. This may be a hint for the reality of the NGC 2129 |cluster. NGC 2251 |The membership of HIP 31365 in this cluster is uncertain, NGC 2251 |see Maitzen et al. (1981A&A....96..174M). NGC 2362 |HIP 35461 was considered to be a cluster member by Perry NGC 2362 |(1973IAUS...50..192P) on the basis of its UBV photometry. Its NGC 2362 |Hipparcos proper motion differs considerably from the other stars. NGC 2362 |Since the star is known to be double, the Hipparcos proper motion may NGC 2362 |be in error and we have not used it to derive the mean cluster NGC 2362 |parameters. NGC 2422 |HIP 36736 and HIP 36773 are not used to determine the mean cluster NGC 2422 |parameters due to their discrepant proper motions. They are possible NGC 2422 |members on the basis of their radial velocities, photometry and proper NGC 2422 |motions in the TRC Catalogue. NGC 2437 |The proper motion of HIP 37480 is not well determined by Hipparcos. NGC 2437 |The star seems to be a non-member on the basis of its proper motion in NGC 2437 |the TRC Catalogue. NGC 2451A|There is growing evidence for the presence of two star clusters in the NGC 2451A|field of NGC 2451, see Roeser & Bastian (1994A&A...285..875R), Platais NGC 2451A|et al. (1996BAAS...28V.822P) and Baumgardt (1998A&A...340..402B). The NGC 2451A|members and possible members of NGC 2451A are taken from Baumgardt NGC 2451A|(1998A&A...340..402B). HIP 37450 and HIP 37838 have somewhat NGC 2451A|discrepant proper motions. Their parallaxes are however close to the NGC 2451A|cluster mean. Furthermore the large proper motion of NGC 2451A clearly NGC 2451A|separates the members from the field stars. The two stars are NGC 2451A|therefore considered to be members. NGC 2467 |This is not a true star cluster, see Loden (1965ApJ...141..668L, NGC 2467 |1966ArA.....4...65L) and Feinstein & Vazquez (1989A&AS...77..321F). NGC 2483 |This is not a true star cluster, see Fitzgerald & Moffat NGC 2483 |(1975A&AS...20..289F) and Havlen (1976A&A....50..227H). NGC 2527 |HIP 39574 and 39602 are non-members according to Lindoff NGC 2527 |(1973A&AS....9..229L). Their proper motions are nevertheless NGC 2527 |compatible with cluster membership. NGC 2579 |Lindoff (1968ArA.....5...63L) found 9 possible members but had some NGC 2579 |doubt concerning the reality of the cluster. We could find 3 possible NGC 2579 |members in the TRC Catalogue. Their proper motions agree with each NGC 2579 |other, adding some evidence for the reality of the cluster. HIP 41024 NGC 2579 |is a possible member according to Lindoff (1968ArA.....5...63L), and NGC 2579 |furthermore its proper motion is in agreement with the two other TRC NGC 2579 |stars. It may therefore be a member. NGC 2669 |HIP 43083 is not used to determine the cluster motion. The star is a NGC 2669 |probable member based on its photometry and its proper motion in the NGC 2669 |TRC Catalogue. The Hipparcos proper motion however differs NGC 2669 |significantly from the mean of other members in the TRC Catalogue. The NGC 2669 |star may be a binary. NGC 3114 |HIP 49245 has a radial velocity in good agreement with that of other NGC 3114 |cluster members in the radial velocity study of Amieux & Burnage NGC 3114 |(1981A&AS...44..101A). Furthermore its photometry is in good agreement NGC 3114 |with the assumption of a cluster membership. We therefore regard it as NGC 3114 |a cluster member. NGC 3324 |The membership of HIP 52004 in this cluster is unclear. It is a NGC 3324 |foreground star according to Claria (1977A&AS...27..145C), but Forte NGC 3324 |(1976A&AS...25..271F) considers it to be a member on the basis of its NGC 3324 |radial velocity and due to an HII shell which surrounds the star and NGC 3324 |is also connected with the cluster. NGC 3496 |This is probably not a true star cluster, see Sher NGC 3496 |(1965MNRAS.129..237S) and Balona & Laney (1995MNRAS.277..250B). NGC 3496 |Even if there is a cluster in this field, HIP 53743 is probably not a NGC 3496 |member (Sher, 1965MNRAS.129..237S). NGC 3572 |The membership of HIP 54606 is uncertain. Schmidt-Kaler NGC 3572 | (1961ZA.....53....1S) considers the star to be a cluster member, NGC 3572 | while Moffat & Vogt (1975A&AS...20..125M) do not. NGC 4337 |The photometry of Moffat & Vogt (1973A&AS...10..135M) casts doubts on NGC 4337 |the reality of this cluster. NGC 4755 |HIP 62931 has a 54% membership probability in the proper motion study NGC 4755 |of King (1981, Syd. Obs. Papers 89). In addition its radial velocity, NGC 4755 |photometry and central position in the cluster strongly support its NGC 4755 |membership. We therefore regard it as a cluster member. NGC 5823 |The membership of both stars is uncertain since they are not well NGC 5823 |observed. Their photometry is compatible with cluster membership. NGC 6169 |This is not an open cluster, see Moffat & Vogt (1973A&AS...10..135M). NGC 6618 |M17. The membership of HIP 89804 is somewhat uncertain. It is a member NGC 6618 |according to Hobbs (1961AJ.....66..517H). NGC 6755 |The membership of both stars is somewhat uncertain since the cluster NGC 6755 |is not well observed. Svolopoulos (1961ApJ...134..612S) considers NGC 6755 |HIP 93932 to be a member on the basis of its spectral type and NGC 6755 |photometry. NGC 6834 |There is no consensus in the literature concerning the membership of NGC 6834 |HIP 97764 and HIP 97806. Our classification follows the results of NGC 6834 |Turner (1976AJ.....81.1125T). NGC 6866 |The proper motions of both stars deviate considerably from each other. NGC 6866 |However, the possible members in the TRC Catalogue show a clustering NGC 6866 |near ({mu}_{alpha}_*/{mu}_{delta}_)=(-2/-5)mas/yr and the proper NGC 6866 |motions of both stars are compatible with this value. We therefore NGC 6866 |consider them to be cluster members. NGC 6883 |The membership of HIP 99437 is very uncertain because the cluster is NGC 6883 |not well observed. NGC 7092 |The proper motion difference between HIP 106346 and the other cluster NGC 7092 |stars is too large to be explained by a statistical fluctuation. NGC 7092 |HIP 106346 was therefore not used to determine the mean cluster NGC 7092 |motion. NGC 7686 |This is probably not a real star cluster, see Johnson NGC 7686 |(1961LowOB...5..133J) and Becker (1963ZA.....57..117B). ONC |The Orion Nebula Cluster. The following three stars were not used to ONC |determine the mean cluster motion: HIP 26237, 26258 and 26442. They ONC |have proper motions close to the cluster mean in the proper motion ONC |study of McNamara et al. (1989AJ.....97.1427M), but their Hipparcos ONC |proper motions differ significantly. The most likely explanation is ONC |that the Hipparcos proper motion is influenced by binary effects. The ONC |proper motions of HIP 26000 and HIP 26199 are very close to the ONC |cluster mean in the study of McNamara et al. (1989AJ.....97.1427M). ONC |They are therefore considered to be members. Ros 5 |It is unclear whether this is a true star cluster, see Lee & Perry Ros 5 |(1971AJ.....76..464L) and Baumgardt (1998A&A...340..402B). The Ros 5 |possible members are taken from Baumgardt (1998A&A...340..402B). Rup 98 |On the basis of their proper motions HIP 58411 and HIP 58432 exclude Rup 98 |each other as members. The mean proper motion of the members in the Rup 98 |TRC Catalogue strongly supports the membership of HIP 58432. We Rup 98 |therefore consider HIP 58411 to be a field star. Tru 18 |Concerning the membership of GH Car (HIP 54621) see the discussion Tru 18 |in the text. Tru 24 |The existence of this cluster is doubtful, see the discussion in Tru 24 |Perry et al. (1991A&AS...90..195P). Tru 33 |Two cluster members in the TRC Catalogue have proper motions close to Tru 33 |({mu}_{alpha}_*/{mu}_{delta}_) = (-10.5/-2.5)mas/yr. Therefore, on the Tru 33 |basis of its proper motion, HIP 90230 cannot be a cluster member. UPG 1 |This is not a star cluster, see Baumgardt (1998A&A...340..402B). --------------------------------------------------------------------------------