Spectral characterization of newly detected young substellar binaries with SINFONI

Per Calissendorff; Markus Janson; Rubén Asensio-Torres; Rainer Köhler

doi:10.1051/0004-6361/201935319

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Volume 627 (July 2019)

A&A, 627 (2019) A167

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Table 1.

Log of VLT/SINFONI observations.

Object ID	Short	Obs. Date	YMG	Membership prob.	Status
2MASS J02103857–3015313	2M0210	2018 Aug. 22	THA	99.9	No source detected
2MASS J14252798–3650229	2M1425	2018 May 23	ABD	99.9	No source detected
2MASS J15104786–2818174	2M1510	2018 Jul. 15	ARG	99.2	Binary candidate
2MASS J15474719–2423493	2M1547	2018 May 23	Field	–	Binary candidate
2MASS J17125805+0645416	2M1712	2018 May 23	–	–	No source detected
WISE J18082129–0459401 ^(a)	2M1808	2018 Jul. 15	ARG	94.5	Poor quality
2MASS J20113196–5048112	2M2011	2018 May 29	THA	42.6	No source detected
2MASS J20135152–2806020	2M2013	2018 Jun. 06	BPMG	99.7	No source detected
2MASS J20334473–5635338	2M2033	2018 Aug. 18	THA	93.4	Unresolved source
2MASS J21171431–2940034	2M2117	2018 Aug. 06	BPMG	98.4	Unresolved source
2MASS J22025794–5605087 ^(b)	2M2202	2018 Aug. 17	THA-ABD	98.4–32.1	Binary candidate
2MASS J22351658–3844154	2M22351	2018 Sep. 27	THA	96.2	No source detected
2MASS J22353560–5906306	2M22353	2018 Aug. 09	THA	99.9	Unresolved source
2MASS J23225299–6151275	2M2322	2018 Sep. 18	THA	96.7	Unresolved source

Notes. Young Moving Group and associations are Argus (ARG), AB Doradus moving group (ABD), Tucana-Horologium (THA), β pic Moving Group (BPMG). Membership probabilities are obtained from the BANYAN Σ online tool.

^(a)

Membership probabilities are based on the BANYAN Σ-tool using optimal parallax and radial velocity for Argus group. With no prior on those quantities the membership probability is reduced to 3.4%.

^(b)

Different YMGs for different a version of the BANYAN tool. The former value depicts the result from the BANYAN II tool and paper that discovered the object, whereas the latter value shows the updated group values for the BANYAN Σ-tool.

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