2018ApJ...865..136G

Query : 2018ApJ...865..136G

2018ApJ...865..136G - Astrophys. J., 865, 136-136 (2018/October-1)

Volans-Carina: a new 90 Myr old stellar association at 85 pc.

GAGNE J., FAHERTY J.K. and MAMAJEK E.E.

Abstract (from CDS):

We present a characterization of the new Volans-Carina Association (VCA) of stars near the Galactic plane (b ≃ -10°) at a distance of ≃75-100 pc, previously identified as group 30 by Oh et al. We compile a list of 19 likely members from Gaia DR2 with spectral types B8-M2, and 46 additional candidate members from Gaia DR2, 2MASS, and AllWISE with spectral types A0-M9 that require further follow-up for confirmation. We find an isochronal age of 89–7+5 Myr based on MIST isochrones calibrated with Pleiades members. This new association of stars is slightly younger than the Pleiades, with less members but located at a closer distance, making its members ≃3 times as bright as those of the Pleiades on average. It is located further than members of the AB Doradus moving group, which have a similar age, but it is more compact on the sky, which makes it less prone to contamination from random field interlopers. Its members will be useful benchmarks to understand the fundamental properties of stars, brown dwarfs, and exoplanets at ≃90 Myr. We also provide an updated version of the BANYAN Σ Bayesian classification tool that includes the VCA.

Abstract Copyright: © 2018. The American Astronomical Society. All rights reserved.

Journal keyword(s): methods: data analysis - proper motions - stars: kinematics and dynamics

Nomenclature: NAME Volans-Carina Association N=1. Tables 1-2: VCA NN (Nos 1-19).

Simbad objects: 99

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Number of rows : 99
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NAME THA MGr 00 00 -62.0           ~ 540 0
2 Cl Alessi 13 OpC 03 27 32.7 -35 50 45           ~ 92 0
3 Cl Melotte 22 OpC 03 46 38.0 +24 10 41           ~ 3679 0
4 Cl Melotte 25 OpC 04 30 27.4 +16 46 43           ~ 3309 0
5 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 4971 0
6 NAME 32 Ori group OpC 05 27 11 +06 16.0           ~ 84 0
7 NAME 118 Tau group Cl* 05 32 +24.0           ~ 24 0
8 NAME Columba Association As* 06 04 19.4 -22 20 40           ~ 337 0
9 NAME AB Dor Moving Group MGr 06 38 53.4 -42 50 04           ~ 540 0
10 TYC 9205-1922-1 PM* 08 15 00.0694024512 -73 47 52.824216804   10.96 10.28 10.16   ~ 4 0
11 TYC 8933-327-1 SB* 08 26 49.6347326736 -63 46 36.825191040   11.54 10.80     ~ 7 0
12 2MASS J08383351-6716368 PM* 08 38 33.5083428936 -67 16 36.782193288           ~ 1 0
13 Cl Mamajek 1 OpC 08 42 32.9 -78 57 47           ~ 392 0
14 HD 75171 PM* 08 44 29.9582562360 -65 49 31.550027520   6.232 6.021     A4V 49 0
15 2MASS J08485563-6113261 PM* 08 48 55.6273586400 -61 13 26.086757484           ~ 2 0
16 UCAC4 092-015404 PM* 08 51 15.7905645264 -71 40 15.309660936   13.17 12.03 11.61   ~ 2 0
17 Gaia DR2 5298305642425782528 WD? 08 52 40.4258136987 -61 43 47.038995876           ~ 1 0
18 UCAC4 121-018181 PM* 08 52 40.6480222656 -65 52 27.812052876       16.06   ~ 4 0
19 2MASS J08524155-6401229 PM* 08 52 41.5601518080 -64 01 22.916359920           ~ 3 0
20 UCAC4 096-017311 PM* 08 54 45.7079890800 -70 55 07.998271968       15.96   ~ 3 0
21 * c Car PM* 08 55 02.8480985300 -60 38 40.594250640 3.28 3.74 3.80     B8II-III 83 0
22 2MASS J08555655-6146057 * 08 55 56.5471713024 -61 46 05.761309296           ~ 2 0
23 UCAC4 104-024769 PM* 08 59 13.6635166656 -69 19 44.244660252   14.87 13.43 12.99   ~ 4 0
24 UCAC4 104-024773 PM* 08 59 15.2808263952 -69 18 42.588966240   14.87 13.45 12.94   ~ 7 0
25 * b02 Car PM* 08 59 24.1816749896 -59 05 01.362386263   5.58 5.16     F4V 86 0
26 UCAC4 133-019108 PM* 09 04 06.8681341392 -63 25 33.696097644       16.18   ~ 2 0
27 Cl Platais 8 OpC 09 06 04.4 -58 25 09           ~ 97 0
28 2MASS J09090086-6826022 PM* 09 09 00.8642167296 -68 26 02.274597240           ~ 1 0
29 UCAC4 118-020952 PM* 09 11 14.4347868984 -66 31 38.916465888       15.73   ~ 3 0
30 HD 79629 PM* 09 11 20.1694059240 -69 15 07.729740036   7.510 7.129     F3/5V 23 0
31 2MASS J09133635-6522114 PM* 09 13 36.3555774408 -65 22 11.482793256           ~ 3 0
32 HD 80563 PM* 09 17 34.1407376928 -63 23 14.513109324   8.74 8.31     F3V 40 0
33 UCAC4 118-021664 PM* 09 17 49.7237445240 -66 28 14.120244624   15.43 13.92 13.57   ~ 4 0
34 2MASS J09181573-6310540 PM* 09 18 15.7429845384 -63 10 53.998307292           ~ 3 0
35 2MASS J09191188-6640123 PM* 09 19 11.8907003160 -66 40 12.310378860           ~ 5 0
36 UCAC4 120-020514 PM* 09 20 19.8613038864 -66 07 41.777628708   13.75 12.51 12.13   ~ 7 0
37 2MASS J09202620-6329547 LM* 09 20 26.1945893760 -63 29 54.812993316           ~ 3 0
38 UCAC4 135-021824 PM* 09 20 36.4947064560 -63 09 59.781334644   15.21 13.79 13.34   ~ 6 0
39 UCAC4 111-021741 PM* 09 22 19.9290307728 -67 56 51.911624292       15.14   ~ 3 0
40 2MASS J09223111-6206070 PM* 09 22 31.1054419464 -62 06 07.194820608           ~ 3 0
41 UCAC4 121-021394 PM* 09 23 41.9993100384 -65 56 51.246572892       15.53   ~ 3 0
42 2MASS J09244301-6254468 PM* 09 24 43.0126311216 -62 54 46.798898868           ~ 3 0
43 2MASS J09244337-6856223 PM* 09 24 43.3632986160 -68 56 22.264544040           ~ 3 0
44 2MASS J09244959-6216319 LM* 09 24 49.5869430384 -62 16 31.895319144           ~ 2 0
45 HD 309681 PM* 09 25 01.6236248136 -64 37 31.174564224   9.81 9.23     G0 10 0
46 2MASS J09254243-6408524 * 09 25 42.43272 -64 08 52.4508           ~ 1 0
47 UCAC4 137-022243 PM* 09 26 31.4461567080 -62 36 23.684337468   14.79 13.41 13.09   ~ 3 0
48 2MASS J09280826-6553589 PM* 09 28 08.2432206432 -65 53 58.889897304           ~ 3 0
49 HD 82406 PM* 09 28 30.5329079616 -66 42 06.761817972   5.904 5.886     A0V 38 0
50 HD 82244 SB* 09 28 31.0581029400 -59 29 15.171253188   9.64 9.21     F5/6IV/V 26 0
51 2MASS J09285886-6541371 * 09 28 58.7873118720 -65 41 37.220078148           ~ 1 0
52 ** KPP 3788B PM* 09 29 31.1834715864 -63 45 37.822894164           ~ 2 0
53 ** KPP 3788A PM* 09 29 31.2301254432 -63 45 39.684812472           ~ 3 0
54 UCAC4 132-021298 ** 09 29 31.239960 -63 45 39.55104       15.84   ~ 1 0
55 UCAC4 129-021088 PM* 09 31 16.2577021392 -64 14 27.112553412   14.98 13.60 13.13   ~ 7 0
56 2MASS J09312193-6419239 PM* 09 31 21.9194895408 -64 19 24.033059328           ~ 3 0
57 2MASS J09313619-6659363 LM* 09 31 36.2003313456 -66 59 36.328614288         18.309 ~ 5 0
58 UCAC4 120-021739 PM* 09 31 44.0461484352 -66 00 53.892158868       16.26   ~ 4 0
59 2MASS J09323325-6908439 PM* 09 32 33.2492732280 -69 08 43.914972624           ~ 2 0
60 UCAC4 136-023859 PM* 09 33 00.1598426016 -62 51 20.802458916   14.42 13.08 12.62   ~ 7 0
61 UCAC4 133-023598 PM* 09 33 00.2658780336 -63 30 38.178095076   16.64 15.17 14.78   ~ 3 0
62 UCAC4 125-022457 PM* 09 34 55.7790080184 -65 00 07.733143548       12.47   K7 11 0
63 HD 83359 PM* 09 34 56.4584935968 -64 59 58.038561996   8.47 8.01     F5V 38 0
64 HD 83523 PM* 09 36 05.1829149624 -64 57 00.885809844   6.639 6.568     A2V 32 0
65 NAME Volans-Carina Association As* 09 37 00.0 -65 18 00           ~ 24 0
66 2MASS J09374003-6226201 PM* 09 37 40.0138882560 -62 26 20.190044328           ~ 1 0
67 HD 83948 PM* 09 38 45.2225445000 -66 51 32.673867588   7.64 7.39     A9IV/V 29 0
68 HD 83946 PM* 09 38 54.1043271648 -64 59 26.735510724   9.34 8.86     F5V 23 0
69 TYC 8953-1289-1 PM* 09 39 10.4597681376 -66 46 15.539217096   11.95 10.91     ~ 13 0
70 UCAC4 116-024312 PM* 09 41 06.8354632656 -66 58 58.421500644       15.94   ~ 2 0
71 2MASS J09430009-6422290 PM* 09 43 00.0963078768 -64 22 29.122437000           ~ 3 0
72 UCAC4 105-027776 PM* 09 45 15.2485982208 -69 08 23.404404552   15.71 14.25 13.75   ~ 4 0
73 TYC 8950-1447-1 PM* 09 48 19.2492045696 -64 03 21.796281504   12.04 11.22     ~ 13 0
74 2MASS J09522444-6731136 PM* 09 52 24.4487491512 -67 31 13.631124216           ~ 3 0
75 2MASS J09575077-6415362 mul 09 57 50.77128 -64 15 36.2556           ~ 1 1
76 Gaia DR3 5246642713478298624 PM* 09 57 50.7760975752 -64 15 36.151304112           ~ 1 0
77 UCAC4 125-026881 PM* 10 01 48.1210826856 -65 08 43.454256072       16.04   ~ 3 0
78 UCAC4 107-026470 PM* 10 02 41.3747995728 -68 45 17.925337044   16.45 15.27 15.26   ~ 2 0
79 TYC 9210-1818-1 PM* 10 08 21.9951536952 -67 56 40.205865012   12.27 11.60     ~ 13 0
80 2MASS J10082205-6757040 PM* 10 08 22.0414112472 -67 57 04.047873192           ~ 2 0
81 2MASS J10101695-6616006 PM* 10 10 16.9592348232 -66 16 00.682905360           ~ 3 0
82 CD-67 852 PM* 10 12 29.8985544528 -67 52 33.420952344   10.63 9.90     ~ 11 0
83 UCAC4 120-028626 PM* 10 16 49.2244647168 -66 03 05.976549648           ~ 3 0
84 2MASS J10222892-6115485 PM* 10 22 28.9188416808 -61 15 48.531244248           ~ 2 0
85 UCAC4 157-043712 PM* 10 22 38.6825997384 -58 48 00.002778336   15.33 14.38 13.06   ~ 1 0
86 NAME UMa Region reg 11 00 +50.0           ~ 333 0
87 NAME TW Hya Association As* 11 01.9 -34 42           ~ 1018 0
88 NAME eps Cha Association OpC 11 59 51 -78 12.4           ~ 188 0
89 NAME Lower Centaurus Crux As* 12 19 -57.1           ~ 565 1
90 NAME Coma Dwarf Galaxy G 12 26 59.0 +23 54 15     14.1     ~ 482 1
91 NAME beta Pic Moving Group MGr 14 30 -42.0           ~ 894 0
92 NAME Upper Centaurus Lupus MGr 15 24 -41.9           ~ 567 1
93 NAME Upper Sco Association As* 16 12 -23.4           ~ 1586 1
94 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3969 1
95 NAME Corona Australis Cloud MoC 19 01 51 -36 58.9           ~ 554 0
96 NAME Octans Association As* ~ ~           ~ 101 0
97 NAME Carina-near Moving Group MGr ~ ~           ~ 118 0
98 NAME Carina Association As* ~ ~           ~ 188 1
99 NAME Upper CrA As* ~ ~           ~ 22 0

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