Publication Date:
2019-06-28
Description:
A search was made for 183 GHz line emission from water vapor in the direction of twelve Mira and two semiregular variables. Upper limits to the emission are in the range of 2000 to 5000 Jy. It is estimated that thermal emission from the inner regions of late type stellar envelopes will be on the order of ten Jy. Maser emission, according to one model, would be an order of magnitude stronger. From the limited set sampled, the possibility of very strong maser emission at 183 GHz cannot yet be ruled out.
Keywords:
ASTRONOMY
Type:
NASA-TM-85987
,
A-9825
,
NAS 1.15:85987
Format:
application/pdf