%0 Journal Article %T 86-GHz SiO masers in Galactic centre OH/IR stars %+ Institut d'Astrophysique de Paris (IAP) %A Messineo, Maria %A Sjouwerman, Lorant O. %A Habing, Harm J. %A Omont, Alain %< avec comité de lecture %J Publications of the Astronomical Society of Japan %V 72 %8 2020 %D 2020 %Z 2007.03398 %Z 2020PASJ...72...63M %R 10.1093/pasj/psaa040 %K circumstellar matter %K Galaxy: stellar content %K infrared: stars %K masers %K stars: late-type %K Astrophysics - Astrophysics of Galaxies %K Astrophysics - Solar and Stellar Astrophysics %Z Sciences of the Universe [physics]Journal articles %X We present results on a search for 86.243-GHz SiO (J = 2→1, $v$ = 1) maser emission toward 67 OH/IR stars located near the Galactic centre. We detected 32 spectral peaks, of which 28 correspond to SiO maser lines arising from the envelopes of these OH/IR stars. In OH/IR stars, we obtained an SiO maser detection rate of about $40\%$ . We serendipitously detected two other lines from OH/IR stars at ≍86.18 GHz, which could be due to a CCS-molecule transition at 86.181 GHz or probably to an highly excited OH molecular transition at 86.178 GHz. The detection rate of 86-GHz maser emission is found to be about $60\%$ for sources with the Midcourse Space Experiment (MSX) A - E < 2.5 mag; but it drops to $25\%$ for the reddest OH/IR stars with MSX A - E > 2.5 mag. This supports the hypothesis by Messineo (2002, A&A, 393, 115) that the SiO masers are primarily found in relatively thinner circumstellar material. %G English %L insu-03748048 %U https://insu.hal.science/insu-03748048 %~ INSU %~ CNRS %~ IAP %~ SORBONNE-UNIVERSITE %~ SORBONNE-UNIV %~ SU-SCIENCES %~ SU-TI %~ ALLIANCE-SU