Table 2.
Summary of the numbers of α Per sources from earlier studies recovered in our full Gaia sample (i.e. up to three times the tidal radius of the cluster).
| Method | in Gaia | Kinematic | in Rtidal | Comments |
|---|---|---|---|---|
| Fresneau (1980) | 51/56 | 11 | 7 | Palomar Schmidt astrometric observations |
| Heckmann et al. (1956) | 139/140 | 62 | 49 | See also Mitchell (1960) |
| Prosser (1992) | 79/148 | 57 | 42 | Astrometric+photometric+spectroscopic search |
| Prosser (1994) | 26/31 | 14 | 10 | Photometric, and spectroscopic observations |
| Prosser & Randich (1998) | 54/89 | 28 | 23 | Follow-up 73 ROSAT sources (Prosser et al. 1996) |
| Prosser et al. (1998) | 45/70 | 23 | 15 | Follow-up 130 ROSAT sources (Prosser et al. 1996) |
| Stauffer et al. (1999) | 24/28 | 14 | 5 | Lithium depletion boundary |
| Barrado y Navascués et al. (2002) | 59/101 | 42 | 24 | Deep wide-field optical survey |
| Deacon & Hambly (2004) | 289/302 | 192 | 111 | Photographic plates |
| Lodieu et al. (2005) | 1/39 | 1 | 0 | Near-infrared photometric selection |
| Zuckerman et al. (2012) | 135/149+29/33 | 116+13 | 84+2 | Members+possible members (Tables 1+2) |
| Lodieu et al. (2012a): Table A1: | 367/494 | 241 | 150 | Previous members |
| Lodieu et al. (2012a): Tables B1+C1: | 690/728+617/685 | 441+494 | 240+268 | New members |
| Gaia Collaboration (2018a) | 740/740 | 739 | 467 | Gaia DR2 |
Notes. The final list of kinematic member candidates contains 23, 224, 517, 2069 sources in 2.3 (core radius), 5.6 (half-mass radius), 9.5 (tidal radius), and 28.5 pc (3×tidal radius), respectively.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.