Query : 2003A&A...403L..51E

2003A&A...403L..51E - Astronomy and Astrophysics, volume 403, L51-54 (2003/6-1)

Detection of 1612 MHz OH emission in the semiregular variable stars RT Vir, R Crt and W Hya.


Abstract (from CDS):

We present evidence of 1612-MHz emission in SR variable stars. The two SRb, RT Vir and R Crt, as well as the SRa W Hya have been monitored with the upgraded Nancay radio telescope since February 2001. All three objects have shown a weak 1612-MHz emission occuring in the velocity range of the strongest emission observed in the main-lines. Such a detection is the second observational evidence for emission in the 1612-MHz OH maser satellite line from SRb stars. It also confirms the presence of 1612-MHz emission in the SRa W Hya discovered by Etoka et al. (2001A&A...378..522E). Such a finding strongly suggests that the shell properties of those three objects are quite similar to those of the Mira stars with similar IR characteristics.

Abstract Copyright:

Journal keyword(s): masers - stars: variable - stars: AGB and post-AGB - circumstellar matter - stars: individual: RT Vir, R Crt, W Hya

Simbad objects: 3

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Number of rows : 3
N Identifier Otype ICRS (J2000)
ICRS (J2000)
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
1 V* R Crt AB* 11 00 33.8541158313 -18 19 29.574953304   10.33 9.80     M7/8III 202 0
2 V* RT Vir AB* 13 02 37.9836301550 +05 11 08.360733054 10.07 9.07 7.41     M8III 302 0
3 V* W Hya Mi* 13 49 02.0018313132 -28 22 03.532006894   8.97 7.70     M7.5-9e 613 0

    Equat.    Gal    SGal    Ecl

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