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[vsnet-j 845] HD 172481

HD 172481

　こんな話すらあるそうです。「新星」という用語がいかに広い範囲の事象を指す
　可能性があるかを如実に示すものでしょう。

Paper: astro-ph/0102498
From: Patricia Whitelock <paw@canopus.saao.ac.za>
Date: Wed, 28 Feb 2001 19:03:49 GMT   (78kb)

Title: An Extremely Slow Nova?
Authors: Patricia Whitelock and Freddy Marang (South African Astronomical
  Observatory)
Comments: 4 pages, 1 figure, to be published in MNRAS
Report-no: SAAO-PDOC-1712
\\
  The binary companion to the peculiar F supergiant HD 172481 is shown to be a
Mira variable with a pulsation period of 312 days. Its characteristics are
within the normal range found for solitary Miras of that period, although its
pulsation amplitude and mass-loss rate (M(dot) ~ 3 x 10^{-6} solar masses per
year) are higher than average. Reasons are given for suspecting that the F
supergiant, which has L ~ 10^4 solar luminosities, is a white dwarf burning
hydrogen accreted from its companion.
\\ ( http://arXiv.org/abs/astro-ph/0102498 ,  78kb)

　天体は以下の通り。変光星としてはまだ名前がないようです。

＃ Nova Sgr 2001 のついでにちょっと観測、かな？

GSC6866.928 184136.98 -275701.4 (2000.0)  8.71 6
GSC6866.928 184137.07 -275701.1 (2000.0)  8.90 6
USNO0600.19450037 184137.058 -275701.15 (2000.0)  9.3 10.4
184136.3 -275709 (2000.0) CPD-28.6640 8.6
184135.9 -275700 (2000.0) F2/3IA(Buscombe) V=8.97 B-V=.62 -
184136.3 -275700 (2000.0) HD172481 *F2/3IA(Michigan)
184136.6 -275659 (2000.0) V=9.051(16) b-y=0.352(28) m1=0.052(24) c1=1.356(7) beta=2.656(-)
184136.8 -275700 (2000.0) SAO187137 99.9 8.6 G0
184136.8 -275700 (2000.0) SS2-405 8.3 G0_Ia:w HD172481.
184137.1 -275701 (2000.0) FSC18384-2759 5.192 5.467 0.646 2.163L
184136.9 -275701 (2000.0) 909 0.53 TYC6866.928.1 plx=-5.3(12.6) (0.02 0.03)
184136.9 -275700 (2000.0) 907 0.48 TYC2-6866.928.1 (9.12 0.02) (9.69 0.02)
184136.3 -275709 (2000.0) CPD-28.6640 8.6
184135.3 -275725 (2000.0) HD172481 8.3 9.0 G0