Further VLA observations of hydrogen deficient stars |
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| Authors: | N Kameswara Rao V R Venugopal A R Patnaik |
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| Institution: | (1) Indian Institute of Astrophysics, 560034 Bangalore;(2) Radio Astronomy Centre, Tata Institute of Fundamental Research, Post Box 8, 643001 Udhagamandalam |
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| Abstract: | VLA observations at 6 cm have been obtained for three hydrogen-deficient objects υ Sgr, V 348 Sgr, and A bell 58. A bell 58
was also observed at 2 cm. Only upper limits to the flux density could be set for these sources. A new radio source at 6 cm
was found in the field of υ Sgr.
The upper limit for 6 cm flux density of V348 Sgr sets an upper limit to its reddening asE(B–V) ≤ 0.65. The hydrogen deficient planetary nebula A 58 shows much lower radio flux than expected from the infrared-radio flux
density relationship of planetary nebulae.
National Radio Astronomy Observatory’s Very Large Array is operated by Associated Universities Inc. under contract with National
Science Foundation, USA. |
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| Keywords: | stars hydrogen-deficient— stars radio observations— stars individual— planetary nebulae |
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