SIMBAD references

2013A&A...551A.113K - Astronomy and Astrophysics, volume 551A, 113-113 (2013/3-1)

Pure rotational spectra of TiO and TiO2 in VY Canis Majoris.

KAMINSKI T., GOTTLIEB C.A., MENTEN K.M., PATEL N.A., YOUNG K.H., BRUENKEN S., MUELLER H.S.P., McCARTHY M.C., WINTERS J.M. and DECIN L.

Abstract (from CDS):

We report the first detection of pure rotational transitions of TiO and TiO2 at (sub-)millimeter wavelengths towards the red supergiant VYCMa. A rotational temperature, Trot, of about 250K was derived for TiO2. Although Trot was not well constrained for TiO, it is likely somewhat higher than that of TiO2. The detection of the Ti oxides confirms that they are formed in the circumstellar envelopes of cool oxygen-rich stars and may be the ``seeds'' of inorganic-dust formation, but alternative explanations for our observation of TiO and TiO2 in the cooler regions of the envelope cannot be ruled out at this time. The observations suggest that a significant fraction of the oxides is not converted to dust, but instead remains in the gas phase throughout the outflow.

Abstract Copyright:

Journal keyword(s): astrochemistry - stars: winds, outflows - circumstellar matter - stars: individual: VY Canis Majoris - line: identification

VizieR on-line data: <Available at CDS (J/A+A/551/A113): spec.dat spec.fit>

Simbad objects: 4

goto Full paper

goto View the reference in ADS

To bookmark this query, right click on this link: simbad:2013A&A...551A.113K and select 'bookmark this link' or equivalent in the popup menu


2020.09.30-23:27:51

© Université de Strasbourg/CNRS

    • Contact