Research output: Contribution to journal › Article
AMBER/VLTI high spectral resolution observations of the Br γ emitting region in HD 98922: A compact disc wind launched from the inner disc region. / Caratti O Garatti, A.; Tambovtseva, L.V.; Garcia Lopez, R.; Kraus, S.; Schertl, D.; Grinin, V.P.; Weigelt, G.; Hofmann, K.-H.; Massi, F.; Lagarde, S.; Vannier, M.; Malbet, F.
In: ASTRONOMY & ASTROPHYSICS, Vol. 582, A44, 2015.Research output: Contribution to journal › Article
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TY - JOUR
T1 - AMBER/VLTI high spectral resolution observations of the Br γ emitting region in HD 98922: A compact disc wind launched from the inner disc region
AU - Caratti O Garatti, A.
AU - Tambovtseva, L.V.
AU - Garcia Lopez, R.
AU - Kraus, S.
AU - Schertl, D.
AU - Grinin, V.P.
AU - Weigelt, G.
AU - Hofmann, K.-H.
AU - Massi, F.
AU - Lagarde, S.
AU - Vannier, M.
AU - Malbet, F.
PY - 2015
Y1 - 2015
N2 - © ESO, 2015.Context. High angular and spectral resolution observations can provide us with fundamental clues to the complex circumstellar structure of young stellar objects (YSOs) and to the physical processes taking place close to these sources. Aims. We analyse the main physical parameters and the circumstellar environment of the young Herbig Be star HD 98922. Methods. We present AMBER/VLTI high spectral resolution (R = 12 000) interferometric observations across the Brγ line, accompanied by UVES high-resolution spectroscopy and SINFONI-AO assisted near-infrared (NIR) integral field spectroscopic data. To interpret our observations, we develop a magneto-centrifugally driven disc-wind model. Results. Our analysis of the UVES spectrum shows that HD 98922 is a young (∼5 × 105 yr) Herbig Be star (SpT = B9V), located at a distance of 440± 6050 pc, with a mass accretion rate (Macc) of ∼(9 ± 3) × 10-7 M⊙ yr-1. SINFONI K-band AO-assisted imaging shows a spatially resolved circumstellar disc-like region (∼140 AU in
AB - © ESO, 2015.Context. High angular and spectral resolution observations can provide us with fundamental clues to the complex circumstellar structure of young stellar objects (YSOs) and to the physical processes taking place close to these sources. Aims. We analyse the main physical parameters and the circumstellar environment of the young Herbig Be star HD 98922. Methods. We present AMBER/VLTI high spectral resolution (R = 12 000) interferometric observations across the Brγ line, accompanied by UVES high-resolution spectroscopy and SINFONI-AO assisted near-infrared (NIR) integral field spectroscopic data. To interpret our observations, we develop a magneto-centrifugally driven disc-wind model. Results. Our analysis of the UVES spectrum shows that HD 98922 is a young (∼5 × 105 yr) Herbig Be star (SpT = B9V), located at a distance of 440± 6050 pc, with a mass accretion rate (Macc) of ∼(9 ± 3) × 10-7 M⊙ yr-1. SINFONI K-band AO-assisted imaging shows a spatially resolved circumstellar disc-like region (∼140 AU in
U2 - 10.1051/0004-6361/201526002
DO - 10.1051/0004-6361/201526002
M3 - Article
VL - 582
JO - ASTRONOMY & ASTROPHYSICS
JF - ASTRONOMY & ASTROPHYSICS
SN - 0004-6361
M1 - A44
ER -
ID: 4002051