Abundance analysis of benchmark M dwarfs | Astronomy & Astrophysics (A&A)

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Volume 698 (May 2025)

A&A, 698 (2025) A289

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Table 1

Target sample.

Name	SIMBAD identifier	Sp type	RA	Dec	K mag	Exp. time (s)	S/N
GJ 411	HD 95735	M2+V	11 03 20.1948	+35 58 11.576	3.340	120	281
GJ 412A	BD+44 2051	M1.0V	11 05 28.5769	+43 31 36.386	4.769	600	293
GJ 436	Ross 905	M3V	11 42 11.0933	+26 42 23.650	6.073	1600	274
GJ 526	HD 119850	M2V	13 45 43.7755	+14 53 29.471	4.415	200	216
GJ 581	BD–07 4003	M3V	15 19 26.8269	–07 43 20.189	5.837	600	181
GJ 699	Barnard's star	M4V	17 57 48.4984	+04 41 36.113	4.524	320	190
GJ 725A	HD 173739	M3V	18 42 46.7043	+59 37 49.409	4.432	240	172
GJ 725B	HD 173740	M3.5V	18 42 46.8946	+59 37 36.721	5.000	600	224
GJ 809	HD 199305	M1.0V	20 53 19.7889	+62 09 15.817	4.618	400	210

Notes. Data were obtained from SIMBAD using the Python module astroquery.simbad. Exp. time is total time on target (both A and B nodding positions and sum of individual exposures in the case of multiple observations). See the main text for specification of signal-to-noise ratio (S/N).

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