2021RNAAS...5...36P

Query : 2021RNAAS...5...36P

2021RNAAS...5...36P - Research Notes of the AAS, 5, 36 (2021/February-0)

Close Companions to the T Tauri Stars CVSO 109 and CVSO 165 Observed by the HST ULLYSES Program.

PROFFITT C.R., ROMAN-DUVAL J., TAYLOR J.M., MONROE T.R., FISCHER T.C., FISCHER W.J., FULLERTON A.W., ALOISI A., BRITT C.T., BUSKO I., CARLBERG J.K., DE ROSA G., FRAZER E.M., HERNANDEZ S., HIRSCHAUER A.S., JAMES B.L., JEDRZEJEWSKI R.I., LOCKWOOD S., OLIVEIRA C., PLESHA R.J., RIEDEL A.R., RILEY A., SAHNOW D.J., SANKRIT R., SHAW R.A., SMITH L.J., SOHN S.T., SOM D., UBEDA L. and WELTY D.E.

Abstract (from CDS):

The Hubble Space Telescope (HST) Ultraviolet Legacy Library of Young Stars as Essential Standards (ULLYSES) program is a HST Director's Discretionary program that is in the process of obtaining a large library of ultraviolet spectroscopic observations of young stars of both high and low masses. We present information on close companions to the T Tauri stars CVSO 109 and CVSO 165 in Orion that were observed with the HST as part of this program. CVSO 109 has a fainter companion at an angular separation ρ = 0.″64 near PA = 218° and Δ(F28X50LP) ≈ 0.6 mag, while the CVSO 165 companion is at ρ = 0.″30 near PA = 326° with Δ(F28X50LP) ≈ 1.7 mag. Both components of CVSO 165 appear to be active stars with strong emission features, while the CVSO 109 companion shows only modest indications of stellar activity. Extracted spectra for each of these components will be included in ULLYSES Data Release 2.

Abstract Copyright: © 2021. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): T Tauri stars - Binary stars - Companion stars

Simbad objects: 3

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Number of rows : 3
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 Haro 5-66 TT* 05 32 32.6499109067 -01 13 45.834165548     13.89   12.27 M0 42 0
2 UCAC4 444-011018 * 05 39 02.3451479569 -01 20 28.170796396       15.139   ~ 1 0
3 Kiso A-0904 76 TT* 05 39 02.5746849144 -01 20 32.445597480     13.73   12.33 K6 29 1

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