2013ApJ...778....5Z


C.D.S. - SIMBAD4 rel 1.7 - 2020.02.25CET23:54:41

2013ApJ...778....5Z - Astrophys. J., 778, 5 (2013/November-3)

Young stars near earth: the Octans-Near association and Castor moving group.

ZUCKERMAN B., VICAN L., SONG I. and SCHNEIDER A.

Abstract (from CDS):

All cataloged stellar moving groups and associations with ages ≤ 100 Myr and within 100 pc of Earth have Galactic space motions (UVW) situated in a "good box" with dimensions ∼20 km/s on a side. Torres et al. defined the Octans Association as a group of 15 stars with age "20 Myr?" and located ∼140 pc from Earth, but with average V space velocity -3.6 km/s that is well outside of the good box. We present a list of 14 Hipparcos star systems within 100 pc of Earth that we call "Octans-Near"; these systems have UVW similar to those of the much more distant Octans Association. The Octans-Near stars have apparent ages between about 30 and 100 Myr and their relationship to the Octans Association stars is unclear. Six additional star systems have UVW similar to those of Octans-Near stars and likely ages ≤ 200 Myr. These six systems include the late-type binary star EQ Peg–6.2 pc from Earth with likely age ≤ 100 Myr and thus likely to be the nearest known pre-main sequence star system. The UVW of stars in a previously proposed ∼200 Myr old Castor moving group are not too dissimilar from the UVW of Octans-Near stars. However, stars in the Castor group–if it exists at all–are mostly substantially older than 200 Myr and thus generally can readily be distinguished from the much younger Octans-Near stars.

Abstract Copyright:

Journal keyword(s): open clusters and associations: individual (Octans-Near, Castor) - solar neighborhood - stars: evolution

Nomenclature: NAME Octans-Near.

Simbad objects: 57

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Number of rows : 57

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 NAME Tuc Moving Group MGr 00 00 -64.0           ~ 66 0
2 NAME THA As* 00 00 -62.0           ~ 325 0
3 * 34 Psc * 00 10 02.2026446215 +11 08 44.925917994   5.456 5.530   5.58 B9Vn 123 0
4 * gam Tri PM* 02 17 18.8670335 +33 50 49.895049   4.03 4.00   4.05 A1Vnn 183 0
5 HD 18809 * 03 00 19.7157756018 -37 27 16.168118978   9.13 8.47     G4V 36 0
6 HD 21379 * 03 27 18.6759652754 +12 44 07.027477358   6.266 6.291     A0Vs 36 0
7 * psi Per Be* 03 36 29.3798227 +48 11 33.478941 3.60 4.17 4.23     B5Ve 393 0
8 HD 23208 Ro* 03 42 39.8040442939 -20 32 43.628755638   9.93 9.109   8.238 G8V 34 0
9 Cl Melotte 22 OpC 03 47 00 +24 07.0           ~ 2935 0
10 HD 283420 * 04 10 35.8730924444 +25 21 45.051930051 9.540 9.580 9.140     F8 16 0
11 CD-58 860 RS* 04 11 55.6681325786 -58 01 47.402969469   10.81 10.008   9.250 G6V 14 0
12 * ome02 Tau PM* 04 17 15.6624066480 +20 34 42.949211995   5.170 4.914     A3m 109 0
13 Cl Melotte 25 OpC 04 26 54.00 +15 52 00.0           ~ 2616 0
14 V* EX Eri dS* 04 46 25.7495931083 -28 05 14.805481115   6.347 6.173     A7VkA3mA3 104 0
15 * bet Pic PM* 05 47 17.0876901 -51 03 59.441135 4.13 4.03 3.86 3.74 3.58 A6V 1622 1
16 V* AP Col Fl* 06 04 52.1487274682 -34 33 35.772083870     12.96 11.49 9.60 M5 56 0
17 HD 42994 SB* 06 17 23.3631844411 +57 24 52.843862117   7.65 7.15     F8 21 0
18 HD 45380 * 06 26 44.8516980664 -07 30 42.980412696   6.29 6.33     B9V 42 0
19 HD 59507 * 07 31 55.6340660659 +38 53 45.843897795   6.61 6.54   6.47 A2V 29 0
20 * alf Gem ** 07 34 35.87319 +31 53 17.8160 1.63 1.62 1.58 1.51 1.52 A1V+A2Vm 235 0
21 HD 77825 BY* 09 04 20.6940978894 -15 54 51.298088788   9.75 8.758   7.703 K2V 42 0
22 V* PR Vir BY* 11 56 41.1855718442 -02 46 44.235013734   10.44 9.49     K1IV/V 36 0
23 NAME Ursa Major Moving Group MGr 12 32 +57.0           ~ 373 2
24 HD 119124 PM* 13 40 23.2323586063 +50 31 09.896167059 6.830 6.840 6.320     F7.7V 94 0
25 HD 119124B PM* 13 40 24.5189711154 +50 30 57.570861588   11.22 10.22 9.98   K7 15 0
26 V* GY Boo BY* 14 12 41.5604409677 +23 48 51.525539742   9.87 8.90     K0V 29 0
27 * lam Boo dS* 14 16 23.0187965 +46 05 17.900526 4.31 4.26 4.18 4.16 4.13 A0Va_lB 325 0
28 NAME beta Pic Moving Group MGr 14 30 -42.0           ~ 535 0
29 HD 133725 * 15 04 43.5202998588 +38 36 18.821711280   7.980 7.490     F8 27 0
30 HD 142229 * 15 53 20.0102010248 +04 15 11.698233246   8.70 8.08     G5V 50 0
31 V* MS Dra BY* 17 39 55.6943269044 +65 00 05.890269248   9.33 8.40     K0V 35 0
32 NAME Gal Center reg 17 45 40.04 -29 00 28.1           ~ 11254 0
33 BD+21 3245 PM* 17 53 29.9358965571 +21 19 31.049944064   9.475 8.49 8.05   K2.5V 68 0
34 HD 186704B Fl* 19 45 57.3323886886 +04 14 44.340001274           ~ 8 0
35 HD 186704 Ro* 19 45 57.3402298694 +04 14 54.416851821   7.62 7.037   6.341 G0V 38 0
36 HD 197211 * 20 42 40.6176253562 -10 58 11.043568644   8.19 7.75     F3IV 21 0
37 * eta Ind dS* 20 44 02.3340423 -51 55 15.496981   4.767 4.495     A9IV 75 0
38 HD 201247 ** 21 10 25.35298 -54 34 25.4948   7.7 7.1     G5V+G7V(k) 29 0
39 HD 202116 PM* 21 14 32.8441691089 -22 52 41.156216435   9.01 8.40     G2V 26 0
40 Ross 776 Fl* 21 16 05.8128058768 +29 51 51.154750081   14.0   12.344   M3.3V 36 0
41 HD 202398 PM* 21 16 37.9712589901 -36 10 24.141756077   8.55 8.09     F5/6V 20 0
42 HD 209234 PM* 22 03 42.4235505340 -60 26 14.852873319   8.48 7.87     G2V 27 0
43 * 53 Aqr B PM* 22 26 34.270424 -16 44 29.72171   6.96 6.32     G3V 99 0
44 * 53 Aqr SB* 22 26 34.3001113018 -16 44 29.719953922       5.93   G2V+G3V 25 0
45 * 53 Aqr A PM* 22 26 34.300222 -16 44 31.90085   6.83 6.22     G2V 136 0
46 V* TW PsA BY* 22 56 24.0532946025 -31 33 56.035064606   7.58 6.48     K4Ve 266 0
47 * alf PsA ** 22 57 39.04625 -29 37 20.0533 1.31 1.25 1.16 1.11 1.09 A4V 1106 3
48 V* NX Aqr BY* 23 24 06.3371228961 -07 33 02.727855753   8.32 7.61     G5V 40 0
49 BD+19 5116A Er* 23 31 52.1743012110 +19 56 14.128443009   12.27 10.173 9.946   M3.5Ve 71 0
50 BD+19 5116 ** 23 31 52.17898 +19 56 14.1505 12.737 11.749 10.165 8.982 7.446 M4+M5 416 0
51 NAME Octans Association As* ~ ~           ~ 59 0
52 NAME Pleiades Moving Group MGr ~ ~           ~ 232 1
53 NAME AB Dor Moving Group MGr ~ ~           ~ 340 0
54 NAME Hercules-Lyra Moving Group MGr ~ ~           ~ 51 0
55 NAME Octans-near MGr ~ ~           ~ 17 0
56 NAME Carina-near Moving Group MGr ~ ~           ~ 46 0
57 NAME Castor Moving Group As* ~ ~           ~ 114 1

    Equat.    Gal    SGal    Ecl

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2020.02.25-23:54:41

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