---------------------------------------------------------

Files:

gl_2012_J2000.cat1 - the correction to absolute proper motions
(i.e. an inertial reference frame) is done via:
- extragalactic objects (galaxies and QSOs)
- on ICRS via Hipparcos (in some few cases Tycho2, PPM, ACT) 
- with respect to a kinematic model of the Galaxy
- millisecond pulsars



bulge_J2000.cat1 - absolute proper motions are with respect to bulge stars
considered to be at rest. This file contains four clusters:
NGC 6522, NGC 6528, NGC 6553, and HP 1

See readme file for the explanation of the file format
------------------------------------------------------

Other Cluster Data:

RA, Dec., l,b, dist from the Sun, heliocentric
radial velocity, metallicity are from the Harris database, the 2010 update.
(Exceptions from this database are specified below for each cluster).

The error in the distance is taken to be 10% of the distance.


Solar Motion: Schonrich, Binney and Dehnen  2010, MNRAS 403, 1829
Rotation velocity of the LSR: 232 km/s (Carlin et al. 2012, 744, 25;
see also Bovy et al. 2012, Schonrich 2012)

For clusters measured with respect to bulge star (i.e. at l ~ few deg about 0, |b| ~ few deg), velocities are calculated as follows.
Assume the bulge stars are at rest, at r ~ 8.0 kpc; the cluster
is near the rotation axis of the disk, so the reflex proper motion is 
only that of the Sun (with values as listed above). Thus the bulge rotation 
is not taken into account.

------------------------------------------------------

Proper Motions:

Proper-motion sources are given for each cluster.

Major proper-motion sources:


CH93 = Cudworth, K. M. \& Hanson, R. B. 1993, AJ 109, 2533 - kinematic model 
of the Galaxy 


O97 = Odenkirchen, M. et al. 1997, New Astronomy 2, 4770 - Hipparcos

Paper I = Dinescu et al. 1997, AJ 114, 1014  - galaxies as inertial frame
Paper II = Dinescu et al. 1999, AJ 117, 277  - galaxies and Hipparcos
(clusters on the Hipparcos system are NGC 6093, NGC 6121, NGC 6144)
Paper III = Dinescu et al. 1999, AJ 117, 1792 - compilation (various)
Paper IV  = Dinescu et al. 2003, AJ 125, 1373 - Hipparcos
Paper V   = Casetti-Dinescu et al. 2007, AJ 134, 195 - Hipparcos
Paper VI  = Casetti-Dinescu et al. 2010 AJ 140, 1282 - Hipparcos
paper VII = Casetti-Dinescu et al. 2013 (in prep.) - Hipparcos

Paper I, II and IV have used only photographic plate material (from SPM) for 
both epochs.
Paper V, VI, VII have photographic plates as first epoch and CCD data as 
second epoch.



Proper motion errors:

For single determination, we use the formal error published with 
that determination.

For some clusters that have several determinations in the literature,
we have used only those preferred by us judging from the method,
reliability of measurement, how deviant from a group of determinations
it is, etc. 
These details are not all included here, but can be provided if needed. 



When we have multiple determinations, we calculate a simple (non-weighted)
average. The formal error of this average is that determined from the
scatter of the determinations.
When the scatter of the determinations is smaller than the average of the
individual (formal) errors of each measurement, we use 
as the error of the average, the average of individual errors (divided
by sqrt(N_det)).



---------------------------------------------------------------------

References for individual clusters:


NGC 104, 47 Tuc
~~~~~~~~~~~~~~~

proper motion determinations:
- Freire et al 2003, mnras 340, 1359 for 10 pulsars;
- Anderson & King 2003 aj 126, 772 Erratum: AJ 128, 950 + SMC's 
proper motion from Kalivayallil et al.  2006, ApJ 652, 1213
- Anderson & King 2003 aj 126, 772 Erratum: AJ 128, 950 + SMC's
proper motion from Vieira et al. 2010, AJ 140, 1934

*note: last two det are not completely independent

NGC 288
~~~~~~~

proper motion determinations:
- Paper I 
- Guo 1995 (PhD Thesis, Yale University)

NGC 362
~~~~~~~

proper motion determinations:
 - O97
 - Tuchloke 1992 (AAS 93, 311) corrected for SMC using Kallivayalil et al. 2006 APJ 652, 1213
 - Tuchloke 1992 (AAS 93, 311) corrected for SMC using Vieira et al. 2010 AJ 140, 1934 

*note: last two det are not completely independent


NGC 1851
~~~~~~~~

Paper I


NGC 1904 (M 79)
~~~~~~~~~~~~~~~

Paper I


NGC 2298
~~~~~~~~

Paper I


NGC 2808
~~~~~~~~


Paper V


NGC 3201
~~~~~~~~


Paper V



NGC 4147
~~~~~~~~

proper motion determinations:
- O97 
- Wang et al. 2000 AAS 142, 373 


NGC 4372
~~~~~~~~~

Paper V



NGC 4590  (M 68)
~~~~~~~~~~~~~~~~

Paper II



NGC 4833
~~~~~~~~~

Paper V


NGC 5024  (M 53)
~~~~~~~~~~~~~~~~

O97

NGC 5139 (w Cen)
~~~~~~~~~~~~~~~~

Paper II



NGC 5272 (M 3)
~~~~~~~~~~~~~~

proper motion determinations:

- O97
- Geffert 1998 (AA 340, 305) 
- Wu et al. 2002 (ChJAA 2, 216) 


NGC 5466
~~~~~~~~


- O97 



Pal 5
~~~~~


Kyle Cudworth 1998 unpublished

(see Odenkirchen et al. 2009, for a discussion why proper motion obtained from
fitting an orbit to tidal tails is not necessarily correct).



NGC 5897
~~~~~~~~

Paper II 




NGC 5904 (M 5)
~~~~~~~~~~~~~~

proper motion determinations:
- CH93
- O97
- Freire et al. 2008 (ApJ 679, 1433)



NGC 5927
~~~~~~~~

Paper V


NGC 5986
~~~~~~~~


Paper V


NGC 6093 (M 80)
~~~~~~~~~~~~~~~

Paper II



NGC 6121 (M 4)
~~~~~~~~~~~~~~

proper motion determinations:

- Paper II
- Bedin et al. 2003 (AJ 126, 247) 
- Kalirai et al. 2004 (ApJ 601, 277)



NGC 6144
~~~~~~~~

Paper II 


NGC 6171 (M 107)
~~~~~~~~~~~~~~~~

CH93


NGC 6205  (M 13)
~~~~~~~~~~~~~~~~

proper motion determinations:
- CH93
- O97
- Chen et al. 2002, IAU Symp. 209, 119

Notes: 
-the O97 measurement is IDENTICAL with that of CH93 (errors only are
different)
-the Chen et al. measurement has very little information on 
how the reductions were done


NGC 6218 (M 12)
~~~~~~~~~~~~~~~

proper motion determinations:
- O97
- Chen et al. 1999 (AAS 145, 223) 


NGC 6254 (M10)
~~~~~~~~~~~~~~

proper motion determinations:
- O97
- Chen et al. 1999 AASup.Ser 145, 223 (wr to ACT stars)


NGC 6266 (M 62)
~~~~~~~~~~~~~~~


Paper IV




NGC 6273 (M 19)
~~~~~~~~~~~~~~~


Paper VI


NGC 6284
~~~~~~~~

Paper VI


NGC 6287
~~~~~~~~


Paper VI


NGC 6293
~~~~~~~~


Paper VI




NGC 6304
~~~~~~~~


Paper IV


NGC 6316
~~~~~~~~


Paper IV

Note: 
In the original paper for one determination corresponding to SPM field 507,
we have mistakenly subtracted the relative proper motion instead of
adding it to the zero point value. This error is only for the proper motion 
in Dec. Thus instead of

mu_alpha cos (del) = -2.42(0.63)
mu_del             = -1.71(0.56)


use:

mu_alpha cos (del) = -2.42(0.63)
mu_del             = -2.65(0.56)





NGC 6333  (M 9)
~~~~~~~~~~~~~~~


Paper VI



NGC 6341 (M 92)
~~~~~~~~~~~~~~~


proper motion determinations:
- CH93
- Geffert 1998 (AA 340, 305)




NGC 6342
~~~~~~~~

Paper VI




NGC 6356
~~~~~~~~



Paper VI




NGC 6362
~~~~~~~~


Paper I




HP 1
~~~~

Ortolani et al. 2011 (ApJ 737, 21) (wrt bulge stars)

distance is taken from Ortolani et al. 2011 (6.8 kpc compare to 8.2 kpc in 
Harris 2010)


NGC 6388
~~~~~~~~


Paper VI




NGC 6397
~~~~~~~~

proper motion determinations:
HST determinations 
(Milone et al. 2006 (AA 456, 517) and Kalirai et al. 2007 (ApJ 675, L93))
are discrepant from ground-based determinations in mu_delta by ~ 2 mas/yr.

below is the summary of all determinations:
  3.39 +- 0.15  -17.55 +- 0.15 Milone et al 2006 AA 456, 517
  3.56 +- 0.04  -17.34 +- 0.04 Kalirai et al. 2007 apj 675 L93 (HST + gal)
  3.33 +- 0.50  -15.20 +- 0.60 Cudworth & Hanson 1993
  3.30 +- 0.60  -15.00 +- 0.70 Rees et al 2012 paper draft
  3.69 +- 0.29  -14.88 +- 0.26 our 2013 det. (Hipp based) -paper VII

(see also paper by Rees et al. 2012- now a draft, with the discussion on this
result)

adopt Paper VII - our recent measurement


NGC 6441
~~~~~~~~


Paper VI




NGC 6522
~~~~~~~~


Terndrup et al 1998 (AJ 115, 1476) w/r bulge stars



NGC 6528
~~~~~~~~

Feltzing & Johnson 2002 (AA 385, 67)



NGC 6553
~~~~~~~~


Zoccali et al. 2001 (AJ 121, 2638)



NGC 6584
~~~~~~~~

Paper I


NGC 6626 (M 28)
~~~~~~~~~~~~~~


Paper VII
 

NGC 6656 (M 22)
~~~~~~~~~~~~~~

Paper VII


NGC 6712 
~~~~~~~~

CH93



NGC 6723
~~~~~~~~~

Paper IV


NGC 6752
~~~~~~~~

Paper I


NGC 6779 (M 56)
~~~~~~~~~~~~~

O97

NGC 6809 (M 55)
~~~~~~~~~~~~

proper-motion determinations:
- Paper II
- Zloczewski et al. 2011 MNRAS 414,3711


NGC 6838 (M 71)
~~~~~~~~~~~~~~

CH93

NGC 6934
~~~~~~~~~


O97



NGC 7006
~~~~~~~~


Dinescu et al. 2006 (AJ 122, 1916)



NGC 7078 (M 15)
~~~~~~~~~~~~~

proper-motion determinations:
- CH93
- Geffert 1993, AJ 106, 168
- O97

- rather poor result (very scattered measurements)

NGC 7089 (M 2)
~~~~~~~~~~~~~

proper-motion determinations:
- CH93
- O97



NGC 7099 (M 30)
~~~~~~~~~~~~~~~


Paper II



Pal 12
~~~~~~


Dinescu et al. 2000 (AJ 120, 1892)



Pal 13
~~~~~~


Siegel et al. (AJ 121, 935)