X TrA through the eyes of MATISSE: More evidence of clumpy molecular layers around C-type asymptotic giant branch stars

Open Access

Table 1

Carbon stars recently imaged with MATISSE.

Object	T_eff [K]	L [L_⊙]	$\dot{M}$ $\[\dot{\mathrm{M}}\]$ [M_⊙yr⁻¹]	C/O	ϕ	θ_3.1/3.5
R Scl	2700 ^a	8000 ^a	1.6 × 10^{−6 b}	1.4 ^c	0.95 ^a	2 ^a
X TrA	2700 ^d	8600 ^e	1.3–1.8 ×10 ^{−7 f}	1.35 ^g	−	1.8
V Hya	2650 ^h	18 000 ^h	~10⁻⁵ ⁱ	1.4 ^h	0.10–0.27 ^h	1.4 ^h

Notes. Some stellar parameters of C-rich stars imaged with MATISSE: effective temperature, luminosity, mass-loss rate, carbon-to-oxygen ratio and pulsation phase of MATISSE observation epoch. The final column lists the overall angular size ratio of the 3.1 and 3.5 μm reconstructed images of each star (C₂H₂ + HCN feature versus pseudo-continuum). ^(a)Drevon et al. (2022) ^(b)De Beck et al. (2010) ^(c)Hron et al. (1998) ^(d)Kipper (2004) ^(e)Rau et al. (2017) ^(f)Schöier & Olofsson (2001); Bergeat & Chevallier (2005) ^(g)Rau et al. (2017) ^(h)Planquart et al. (2024) ⁽ⁱ⁾Knapp et al. (1997).

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.