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arXiv:astro-ph/0511024 (astro-ph)
[Submitted on 1 Nov 2005]

Title:Search for SiO masers in nearby Miras pulsating in the first overtone mode

Authors:Yoshifusa Ita (1)Shuji Deguchi (2), Noriyuki Matsunaga (3), Hinako Fukushi (3) ((1)ISAS/JAXA,(2)NRO, NAOJ,(3)IOA, Univ. of Tokyo)
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Abstract: We studied the period-K magnitude (P-K) relations of nearby Mira and Mira-like variables with relatively good Hipparcos parallaxes. They form at least two prominent sequences on the P-K plane, corresponding to the sequences C (Mira variables pulsating in the fundamental mode) and C'(Mira variables pulsating in the 1st overtone mode), that were found in the LMC. As a part of an ongoing study to see the differences between the Mira variables pulsating in the fundamental and the 1st overtone mode, we searched for SiO masers in the nearby variables on the sequences C' and C using the Nobeyama 45m radio telescope. We observed 28 selected nearby Mira and Mira-like variables without previous maser observations, and found 3 new emitters. The observational result shows that there is few or no SiO maser emitters pulsating in the 1st overtone mode.
Comments: 4 pages, to appear in the proceedings of the conference "Stellar Pulsation and Evolution", 2005. Monte Porzio Catone, Italy. Eds.: A. R. Walker and G. Bono
Subjects: Astrophysics (astro-ph)
Cite as: arXiv:astro-ph/0511024
  (or arXiv:astro-ph/0511024v1 for this version)
  https://doi.org/10.48550/arXiv.astro-ph/0511024
Journal reference: Mem.Soc.Ast.It.77:85-88,2006

Submission history

From: Yoshifusa Ita [view email]
[v1] Tue, 1 Nov 2005 12:05:53 UTC (46 KB)
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