**Table 1:** Summary of the characteristics of TX Cam.
Parameters		Value $^{\ast}$
Other identifiers		IRAS 04566+5606, IRC +60150
Spectral type		M 8-M 10
Variable type		Mira
Pulsation period		557.4 days
Distance^a		380 pc
Radial velocity^b		11 km s^-1
Masers from other molecules^c		H₂O and OH, absent

$^{\ast}$ Unmarked values are from the SIMBAD data base.
^a Olofsson et al. (1998).
^b From the SIMBAD data base but since the velocity differs from molecule to molecule and due to the variability of SiO masers, different values can be found in other references. Some references are, 9.6-12.5 $\rm {km~s^{-1}}$ from CO by Olofsson et al. (1991); 11.8 $\rm {km~s^{-1}}$ from CO, 9.8 $\rm {km~s^{-1}}$ from SiO ( v=1,J=2-1) by Cernicharo et al. (1997); mean velocities of 10.7-11.0 $\rm {km~s^{-1}}$ from SiO ( v=1,2,3, J=1-0) by Cho et al. (1996).
^c Benson et al. (1990); Benson & Little-Marenin (1996); Lewis (1997).

Source LaTeX | All tables | In the text

	1 Introduction
	2 Observations
	3 Data reduction
	4 Results
	5 Discussion
	6 Summary and conclusions
	References