2022AJ....163..278N

Query : 2022AJ....163..278N

2022AJ....163..278N - Astron. J., 163, 278-278 (2022)

Mapping out the Stellar Populations of IC 2602 and IC 2391.

NISAK A.H., WHITE R.J., YEP A., HENRY T.J., PAREDES L., JAMES H.-S. and JAO W.-C.

Abstract (from CDS):

IC 2391 and IC 2602 are important benchmarks for testing early star and planet evolution theories, both structural and dynamical, because they are the nearest open clusters with ages of ∼50 Myr. We refine membership lists for these clusters by identifying candidate members using Gaia DR2 kinematic and distance information. We identify 451 candidate members of IC 2602 and 350 candidate members of IC 2391. If confirmed, this would increase the known populations of these clusters by 275% and 130%, respectively. We use CHIRON on the CTIO/SMARTS 1.5 m telescope via fiber mode which yields a resolution of 27,400 to acquire high-resolution spectra of 26 new candidate cluster members brighter than G = 13 magnitude, as well as an additional 12 previously known members. Measures of lithium, Hα, stellar properties (Teff, log(g), [Fe/H]), radial velocities, and v\sin i values from these spectra are used to confirm cluster membership. We find that 37 of 38 stars we observe are bona fide cluster members, of which four are new candidate photometric binaries and 10 are new candidate spectroscopic binaries.

Abstract Copyright: © 2022. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Open star clusters - Young star clusters

VizieR on-line data: <Available at CDS (J/AJ/163/278): table3.dat table4.dat tablea1.dat tablea2.dat>

Status at CDS : All or part of tables of objects could be ingested in SIMBAD with priority 2.

Simbad objects: 54

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Number of rows : 54
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 2MASS J08202510-5340306 * 08 20 25.1043982304 -53 40 30.644735327           ~ 4 0
2 UCAC4 172-017169 * 08 32 00.2129665344 -55 39 04.762946736   14.134 12.997 12.759   ~ 8 0
3 2MASS J08365944-5219251 * 08 36 59.4429610558 -52 19 25.143613864           ~ 2 0
4 UCAC4 186-019841 * 08 37 24.6359790000 -52 54 10.932237864   14.575 13.339 12.990   ~ 13 0
5 CD-52 2467 * 08 38 22.9092124584 -52 56 48.041148444   11.61 10.93 10.81   ~ 40 0
6 2MASS J08383609-5206388 * 08 38 36.0945046896 -52 06 38.793042468           ~ 15 0
7 V* HW Vel bC* 08 39 23.8445033904 -53 26 23.167592268 4.72 5.291 5.439     B5V 114 0
8 CD-52 2482 * 08 39 38.8131754176 -53 10 07.119992820   10.59 9.95     G: 27 0
9 V* V364 Vel BY* 08 39 53.0493554064 -52 57 56.847553812   12.75 11.89 11.69   K0 49 0
10 HD 74146 SB* 08 39 57.5984976576 -53 03 17.016627132 4.48 5.05 5.19     B5IV 121 0
11 VXR PSPC 16a * 08 40 16.2484046424 -52 56 29.172145452   12.48 11.76 11.60   G9 40 0
12 HD 74196 * 08 40 17.4649643448 -53 00 55.430609904 4.97 5.47 5.61     B9/A0 144 0
13 * omi Vel Pu* 08 40 17.5993322082 -52 55 18.875623881 2.8 3.44 3.63     B3/5(V) 181 1
14 Cl* IC 2391 SMY 23 * 08 40 49.1007179088 -53 37 45.364323468   11.91 11.15 10.84   G6 47 0
15 IC 2391 OpC 08 41 17.5 -53 03 00           ~ 871 0
16 HD 74560 SB* 08 42 25.3866034128 -53 06 50.343377699 3.97 4.655 4.815     B3IV 182 0
17 UCAC4 193-021349 * 08 43 38.4442035192 -51 30 28.938126276   12.087 11.236 11.506   ~ 16 0
18 UCAC4 193-021352 * 08 43 38.9238787896 -51 30 24.895453716       12.102   ~ 7 0
19 V* V376 Vel BY* 08 44 05.2223496648 -52 53 17.190402504   11.37 10.75 10.74   G3e: 52 0
20 2MASS J08443450-5255325 * 08 44 34.5051616368 -52 55 32.505732192           ~ 6 0
21 UCAC4 189-021345 * 08 47 38.6113070112 -52 16 09.959258244   13.039 12.020 11.752   ~ 9 0
22 2MASS J08583097-5040359 * 08 58 30.97056 -50 40 35.9724           ~ 1 0
23 2MASS J08583180-5040360 * 08 58 31.80480 -50 40 36.0804           ~ 1 0
24 2MASS J08593213-5106511 * 08 59 32.1319800095 -51 06 51.109746338           ~ 2 0
25 UCAC4 139-037529 * 10 20 00.5314604784 -62 17 46.350801420   14.047 13.020 12.807   ~ 16 0
26 2MASS J10280304-6316132 * 10 28 03.0191792673 -63 16 13.244183644           ~ 3 0
27 TYC 8960-1957-1 * 10 28 31.2267933336 -63 44 15.602582148   12.06 11.31     ~ 39 0
28 UCAC4 138-043101 * 10 31 53.1390999216 -62 34 33.263688216   14.665 13.421 12.960   ~ 15 0
29 RX J1032.4-6506 X 10 32 28.6 -65 06 26   14.00 12.77     ~ 6 0
30 UCAC4 125-033636 * 10 32 29.5580855400 -65 06 40.328828208   13.801 12.740 12.518   ~ 17 0
31 UCAC4 139-043232 * 10 35 30.4631762688 -62 18 36.695159100   14.742 13.527 12.943   ~ 14 0
32 2MASS J10384893-6330430 * 10 38 48.9292004592 -63 30 43.049582388           ~ 17 0
33 2MASS J10385502-6257272 Y*? 10 38 55.0284026400 -62 57 27.161802072           ~ 11 0
34 V* V364 Car a2* 10 40 11.4474547680 -65 06 00.752607072 4.79 5.36 5.52     ApSi 154 0
35 UCAC4 123-035323 * 10 41 17.5518318504 -65 26 57.456228156   13.647 12.565 12.267   ~ 10 0
36 UCAC4 139-045788 * 10 41 41.7332919168 -62 22 20.415562356   12.630 11.798 11.823   ~ 13 0
37 2MASS J10420316-6520590 * 10 42 03.1640462784 -65 20 58.907884164           ~ 19 0
38 V* V555 Car BY* 10 42 07.0839584184 -64 46 07.839386688   12.40       G 52 0
39 IC 2602 OpC 10 42 55.9 -64 25 22           ~ 735 0
40 CPD-63 1609 * 10 43 15.7109211168 -64 23 54.173477652   11.39 10.75   10.02 ~ 17 0
41 V* V558 Car BY* 10 44 06.8106499248 -63 59 35.059923708   11.75       G4 57 0
42 HD 93194 * 10 44 06.9012455223 -63 57 39.869369989 4.03 4.649 4.789     B3/5Vn 94 0
43 V* V559 Car BY* 10 44 22.5515649000 -64 15 30.116510712   11.61       G0 62 0
44 HD 93540 Pu* 10 46 16.5473233704 -64 30 52.422448716 4.79 5.24 5.34     B6Vnn 100 0
45 HD 93549 SB* 10 46 29.5881441504 -64 15 47.653678296 4.69 5.136 5.229     B6-7V 93 0
46 HD 93607 * 10 46 51.2189828556 -64 23 00.504549149 4.06 4.69 4.83     B4V 101 0
47 2MASS J10482786-6554502 * 10 48 27.8657932632 -65 54 50.189050368           ~ 19 0
48 2MASS J10521708-6502488 Y*? 10 52 17.0939284872 -65 02 48.939391860           ~ 11 0
49 UCAC4 121-036192 * 10 52 19.1310594840 -65 58 06.839584392   14.338 13.152 12.733   ~ 15 0
50 UCAC4 127-040152 mul 10 59 12.180288 -64 38 09.17628   12.97 12.14 11.98   K0V(e) 3 0
51 NAME Pleiades Moving Group MGr ~ ~           ~ 297 0
52 NAME Pleiades Supercluster of Stars Cl* ~ ~           ~ 18 0
53 NAME IC 2391 Supercluster MGr ~ ~           ~ 20 0
54 NAME Argus Association As* ~ ~           ~ 266 0

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