2025A&A...693L...3S

Query : 2025A&A...693L...3S

2025A&A...693L...3S - Astronomy and Astrophysics, volume 693L3 (2025/1-1)

A sub-Earth-mass planet orbiting Barnard's star No evidence of transits in TESS photometry.

STEFANOV A.K., GONZALEZ HERNANDEZ J.I., SUAREZ MASCARENO A., NARI N., REBOLO R., DAMASSO M., CASTRO-GONZALEZ A., ZAPATERO OSORIO M.-R., ALLENDE PRIETO C., SILVA A.M. and MARTINS C.J.A.P.

Abstract (from CDS):

A sub-Earth-mass planet orbiting Barnard's star, designated as Barnard b, has recently been announced. At almost the same time, the first photometric data of Barnard's star by the Transit Exoplanet Survey Satellite (TESS) was released in Sector 80. We explore the possibility of emergent transits of Barnard b in TESS photometry. The detrended 2 min light curve appears to be flat, with a flux root mean square of 0.411 parts per thousand. Attempts of blind and informed transit curve model inference suggest no evidence of transiting Barnard b, or any other body. This provides a 3σ upper bound of 87.9 degrees for the orbital inclination of Barnard b.

Abstract Copyright: © The Authors 2024

Journal keyword(s): techniques: photometric - stars: low-mass - stars: individual: Barnard's star - stars: individual: HIP 87937 - stars: individual: GJ 699

Simbad objects: 4

Full paper

View the references in ADS

Number of rows : 4

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	NAME Proxima Centauri	PM*	14 29 42.9461331854	-62 40 46.164680672	14.21	12.95	11.13	9.45	7.41	M5.5Ve	1483	0
2	NAME Proxima Centauri b	Pl	14 29 42.9461331854	-62 40 46.164680672						~	445	0
3	NAME Barnard's star	BY*	17 57 48.4984700685	+04 41 36.113879676	12.497	11.24	9.511	8.298	6.741	M4V	907	2
4	NAME Barnard's Star b	Pl	17 57 48.4984700685	+04 41 36.113879676						~	34	0

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