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J/AJ/140/119    βPic and AB Dor moving groups members    (Schlieder+, 2010)
β Pictoris and AB Doradus moving groups: likely new low-mass members.
    Schlieder J.E., Lepine S., Simon M.
   <Astron. J. 140, 119 (2010)>
   =2010AJ....140..119S
ADC_Keywords: Clusters, open ; Stars, pre-main sequence ; Photometry ;
              Radial velocities ; Rotational velocities
Keywords: open clusters and associations: individual
           (beta Pictoris moving group, AB Doradus moving group) -
           stars: kinematics and dynamics - stars: pre-main sequence

Abstract:
    We present results from our continuing program to identify new,
    low-mass, members of the nearby young moving groups (NYMGs) using a
    proper motion selection algorithm and various observational
    techniques. We have three goals: (1) to provide high priority targets
    for exoplanet searches by direct imaging, (2) to complete the census
    of the membership in the NYMGs down to ∼0.1M☉, and thus (3) provide
    a well-characterized sample of nearby (median distances at least twice
    as close as the Taurus and Ophiuchus star-forming regions), young
    (8-50Myr) stars for detailed study of their physical properties and
    multiplicity.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table1.dat       142       20   Candidate β Pictoris Moving Group Members
table2.dat       142       42   Candidate AB Doradus Moving Group Members
table3.dat        73        9   RV data of selected known AB Doradus
                              Moving Group Members
table4.dat       102       18   RV data of probable young candidates (PYCs)


See also:
 J/A+A/460/695 : Search for Associations Containing Young stars (Torres+, 2006)


Byte-by-byte Description of file: table1.dat table2.dat

   Bytes Format Units     Label     Explanations

       1  A1    ---       S         [TSAB] Sample (1)
   3- 17  A15   ---       Name      Name
  19- 28  A10   ---       OName     HIP name
  30- 39  F10.6 deg       RAdeg     Right ascension in decimal degrees (ICRS)
  41- 50  F10.6 deg       DEdeg     Declination in decimal degrees (ICRS)
  52- 57  F6.1  mas/yr    pmRA      Proper motion along RA
  59- 61  F3.1  mas/yr    e_pmRA    ? rms uncertainty on pmRA (2)
  63- 68  F6.1  mas/yr    pmDE      Proper motion along DE
  70- 72  F3.1  mas/yr    e_pmDE    ? rms uncertainty on pmDE (2)
  74- 78  F5.2  mag       Vmag      V magnitude
  80- 83  F4.2  mag       Ksmag     Ks magnitude
  85- 88  F4.1  pc        dkin      Kinematic distance
  90- 93  F4.1  pc        dplx      ?=- Distance from parallax
  95- 98  F4.1  pc        e_dplx    ?=- rms uncertainty on dplx
 100-103  I4    ct/ks     CR        ? Rosat X-ray count rate
 105-107  I3    ct/ks     e_CR      ? rms uncertainty on CR
 109-113  F5.2  ---       HR1       ? Rosat Hardness ratio 1 (0.1-0.4/0.5-2keV)
 115-118  F4.2  ---       e_HR1     ? rms uncertainty on HR1
 120-124  F5.2  ---       HR2       ? Rosat Hardness ratio 2 (0.5-0.9/0.9/2keV)
 126-129  F4.2  ---       e_HR2     ? rms uncertainty on HR2
 131-133  F3.1  0.1nm     EWHa      ? Hα equivalent width
     134  A1    ---       n_EWHa    [n] n for not detected
 136-142  A7    ---       LNM       [No Table 4] Likely new member ?

Note (1): Sample as follows:
   T = Tycho-2 candidates
   S = SUPERBLINK (DBK) proper motion candidates.
   A = AB Doradus Interlopers
   B = β Pictoris Interlopers
Note (2): Error in SUPERBLINK proper motions is ±8mas/yr.



Byte-by-byte Description of file: table3.dat

   Bytes Format Units   Label     Explanations

   1- 15  A15   ---     Name      Name
  17- 26  A10   ---     OName     Other name
  28- 37  F10.6 deg     RAdeg     Right ascension in decimal degrees (ICRS)
  39- 47  F9.6  deg     DEdeg     Declination in decimal degrees (ICRS)
  49- 53  F5.1  km/s    RVp       Predicted radial velocity
  55- 59  F5.1  km/s    RVm       Measured radial velocity
  61- 63  F3.1  km/s    e_RVm     rms uncertainty on RVm
      65  I1    km/s    vsini     Rotational velocity
      67  I1    km/s    e_vsini   rms uncertainty on vsini
  69- 73  A5    ---     SpT       MK spectral type


Byte-by-byte Description of file: table4.dat

   Bytes Format Units   Label     Explanations

       1  A1    ---     S         [AB] Sample (1)
   3- 18  A16   ---     Name      Name
  20- 40  A21   ---     OName     Other name
  42- 51  F10.6 deg     RAdeg     Right ascension in decimal degrees (ICRS)
  53- 62  F10.6 deg     DEdeg     Declination in decimal degrees (ICRS)
  64- 68  F5.1  km/s    RVp       Predicted radial velocity (2)
  70- 74  F5.1  km/s    RVm       ? Measured radial velocity
  76- 78  F3.1  km/s    e_RVm     ? rms uncertainty on RVm
      79  A1    ---     r_RVm     [bce] Origin of RVm (3)
  81- 82  I2    km/s    vsini     ? Projected rotational velocity
      84  I1    km/s    e_vsini   ? rms uncertainty on vsini
  86- 89  F4.1  pc      dkin      Kinematical distance
  91- 94  A4    ---     SpT       MK spectral type
      96  A1    ---     r_SpT     [bcf] Origin of SpT (3)
  98-100  A3    ---     LNM       [YES NO] Likely new member ?
     102  A1    ---     n_LNM     [d] Reconfirmation (3)

Note (1): Sample as follows:
    B = β Pic Moving Group Member (BPMG) probable young candidates
    A = AB Dor Moving Group Member (ABDMG) probable young candidates
Note (2): Typical error in RVp is ±2.0km/s (the typical UVW velocity
    spread in the NYMGs).
Note (3): Notes as follows:
    b = Jeffries (1995MNRAS.273..559J)
    c = Torres et al. (2006, Cat. J/A+A/460/695)
    d = Reconfirmation of Torres et al. (2008, ASP Monograph Pub., Vol. 5)
    e = Zwitter et al. (2008AJ....136..421Z, See Cat. III/265).
    f = SpType classified by visual inspection of spectra.


History:
    From electronic version of the journal
(End)                                      Patricia Vannier [CDS]    08-Jun-2012