2020A&A...635L..13A

Query : 2020A&A...635L..13A

2020A&A...635L..13A - Astronomy and Astrophysics, volume 635L13-13 (2020/3-1)

Lithium-rotation connection in the newly discovered young stellar stream Psc-Eri (Meingast 1).

ARANCIBIA-SILVA J., BOUVIER J., BAYO A., GALLI P.A.B., BRANDNER W., BOUY H. and BARRADO D.

Abstract (from CDS):


Context. As a fragile element, lithium is a sensitive probe of physical processes occurring in stellar interiors.
Aims. We aim to investigate the relationship between lithium abundance and rotation rate in low-mass members of the newly discovered 125Myr-old Psc-Eri stellar stream.
Methods. We obtained high-resolution optical spectra and measured the equivalent width of the 607.8 nm LiI line for 40 members of the Psc-Eri stream, whose rotational periods have been previously derived.
Results. We show that a tight correlation exists between the lithium content and rotation rate among the late-G to early-K-type stars of the Psc-Eri stream. Fast rotators are systematically Li rich, while slow rotators are Li depleted. This trend mimics that previously reported for the similar age Pleiades cluster.
Conclusions. The lithium-rotation connection thus seems to be universal over a restricted effective temperature range for low-mass stars at or close to the zero-age main sequence, and does not depend on environmental conditions.

Abstract Copyright: © ESO 2020

Journal keyword(s): stars: low-mass - stars: pre-main sequence - stars: abundances - open clusters and associations: individual: Psc-Eri - stars: rotation

Errata: erratum vol. 640, art. C2 (2020)

Simbad objects: 43

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Number of rows : 43
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 RX J0047.3-2245 Ro* 00 47 17.9670658608 -22 45 08.102880036   12.33 11.462   10.163 ~ 10 0
2 TYC 8034-121-1 Er* 00 47 38.4423256944 -47 41 46.154951232   13.29 12.20     ~ 13 0
3 UCAC4 343-001044 Ro* 00 55 21.4231520524 -21 24 03.750584154   14.260 12.915 12.492   ~ 7 0
4 CD-31 496 Ro* 01 13 42.3333866256 -31 11 39.703513092   11.86 11.00     ~ 9 0
5 UCAC4 240-001343 Ro* 01 21 49.6539577163 -42 01 22.625296586   14.748 13.408 12.895   ~ 8 0
6 UCAC2 30625698 Ro* 01 24 24.6540972936 -03 16 38.786406348   13.05 12.06 11.90 11.02 ~ 12 0
7 TYC 4693-410-1 Ro* 02 10 22.2936871296 -03 50 56.575884948   12.72 11.75 11.72 10.86 ~ 13 0
8 ATO J034.3109-27.2783 Ro* 02 17 14.6228560584 -27 16 41.988998748   14.31 13.09 12.71 11.55 ~ 12 0
9 BPS CS 29510-0032 Ro* 02 26 06.9531768000 -24 54 49.090427676   13.43 12.23 11.87   ~ 6 0
10 2MASS J02265329-0517449 Ro* 02 26 53.2963720752 -05 17 45.033079632           ~ 12 0
11 UCAC2 23779959 Ro* 02 29 28.4554081992 -20 12 16.785384444   13.22 12.02 11.746 10.79 ~ 13 0
12 BD-03 391 Ro* 02 30 58.8297076944 -03 03 04.714551972   11.28 10.62     ~ 8 0
13 UCAC4 423-003275 Ro* 02 39 10.8831489552 -05 32 22.295430060   13.071 12.101 12.094   ~ 16 0
14 TYC 5287-187-1 Ro* 02 59 52.0304484144 -09 47 35.666034252   12.99 11.63     ~ 9 0
15 CD-37 1123 Er* 03 00 46.8644321640 -37 08 01.755110040   11.25 10.46     G9V 21 0
16 Gaia DR3 5159567164990031360 Ro* 03 04 45.9618752566 -12 16 57.793832487           ~ 5 0
17 LAMOST J030514.06+060853.7 Em* 03 05 14.0704234512 +06 08 53.687694624           K1 9 0
18 V* ES Eri RS* 03 18 03.8333177688 -19 44 14.272436616   11.61 10.63     K5V 27 0
19 UCAC4 371-003776 Pe* 03 24 25.1935436057 -15 50 05.286753147   12.893 11.926 11.602   ~ 7 0
20 TYC 4715-271-1 Ro* 03 29 30.3250550904 -07 10 13.748750652   11.74 11.00     ~ 12 0
21 2MASS J03323092-0613091 Ro* 03 32 30.9240040104 -06 13 08.982515280           ~ 11 0
22 Cl Melotte 22 OpC 03 46 38.0 +24 10 41           ~ 3679 0
23 Gaia DR3 5114686272872474880 Ro* 03 47 25.7876590032 -12 32 30.840086040           ~ 5 0
24 CD-42 1249 Ro* 03 47 56.3013336768 -41 56 25.162944324   11.71 10.89     ~ 10 0
25 TYC 4723-1066-1 Ro* 03 48 38.2894079832 -06 41 52.429175448   12.28 11.75     ~ 13 0
26 2MASS J03540106-0614146 Ro* 03 54 01.0556986488 -06 14 14.501525352           ~ 10 0
27 TYC 5308-1051-1 Ro* 03 57 03.9745500744 -10 14 00.911055156   12.17 11.21     ~ 13 0
28 TYC 6455-1224-1 Ro* 03 57 35.0875550904 -24 28 42.179685924   12.51 11.70     ~ 7 0
29 UCAC2 25238237 Ro* 03 58 54.6912492264 -17 05 53.200089996   12.91 11.93 11.79 10.85 ~ 10 0
30 UCAC4 369-004980 Ro* 04 12 45.9955665432 -16 19 29.041542984   13.116 12.229 12.025   ~ 11 0
31 TYC 7041-1489-1 SB* 04 28 28.9547799978 -33 53 45.271392530   12.802 11.872 11.711   ~ 9 0
32 NAME Orion Nebula Cluster OpC 05 35.0 -05 29           ~ 2514 0
33 NGC 2264 OpC 06 40 53.7 +09 52 32           ~ 1876 0
34 NAME beta Pic Moving Group MGr 14 30 -42.0           ~ 894 0
35 UCAC4 365-190082 Ro* 22 31 13.8644805960 -17 04 52.274252028   13.221 12.251 12.113   ~ 12 0
36 TYC 6389-694-1 Ro* 22 39 01.3243158768 -18 52 55.559078148   12.23 11.73     ~ 12 0
37 UCAC2 25675386 Ro* 22 39 53.5029803928 -16 36 23.238410112   12.68 11.81 11.55 10.77 ~ 12 0
38 TYC 5832-54-1 Ro* 23 36 52.0465976280 -11 25 01.622448444   12.81 11.98     ~ 10 0
39 UCAC2 24994457 Ro* 23 40 37.4455089816 -18 11 37.823148744   12.83 11.78 11.62 11.00 ~ 12 0
40 2MASS J23483240-1832572 Ro* 23 48 32.4190654512 -18 32 57.282067968           ~ 10 0
41 UCAC2 26135561 Ro* 23 49 55.0530562968 -15 43 41.931576444   12.81 11.84 11.71 10.82 ~ 12 0
42 UCAC2 22602414 Ro* 23 56 53.6814729096 -23 17 24.662567724   12.97 11.87 11.65 10.64 ~ 11 0
43 NAME Psc-Eri Stream St* ~ ~           ~ 70 0

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