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 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:
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FileName Lrecl Records Explanations
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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)
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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
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Bytes Format Units Label Explanations
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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 ?
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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.
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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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
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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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)
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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 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 2008AJ....136..421Z, See Cat. III/265).
f = SpType classified by visual inspection of spectra.
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 08-Jun-2012