Dátum: 1998. augusztus 27., 12:27 |
Feladó: |
Tárgy: 1 even belul 2 szupernova az NGC 6754-ben! |
Sziasztok!
Ugy tunik, az idei evben rengeteg az SN.
1 even belul 2 szupernova az NGC 6754-ben! Ilyenrol meg nem nagyon
hallottam (az egyetlen pelda: SNe 1992R and 1992ac az MCG +10-24-007 nevu
GX-ban). Kar, hogy csak a deli egrol latszik...
Udv: Fidusz
>Date: Thu, 27 Aug 1998 12:23:14 +0900 (JST)
>From: Yamaoka Hitoshi
>Subject: [vsnet-chat 1199] SNe 1998dq and 1998X
>Dear SN watchers,
>
>According to IAUC 6998, Australian amateur astronomer B. White has
>visually discovered an apparent supernova in SBb galaxy ,
>which has also produced SN 1998X this March! The new object, SN
>1998dq, is located at R.A. = 19h11m23s.78, Decl. = -50o38'25".5
>(2000.0), which is about 19" west and 5" north from the core of the
>galaxy. This position is about 5-7" north from SN 1998X.
>
>SN 1998X was 17 mag on its discovery and was of type II. On the other
>hand, SN 1998dq was 14.3 mag around the discovery (Aug. 23.4), and
>from its unusual blue (B-V about 0) color it would be on very early
>phase of bright supernova. From the recession velosity of the galaxy,
>the expected maximum of typical SNe Ia on this galaxy would be 14.9
>mag, while SN 1998dq is already brighter. Further photometry and
>spectroscopy (which has not reported) are strongly urged.
>
>Such an event is rare as two supernovae appears in one galaxy on the
>same year. Recent example is SNe 1992R and 1992ac, which are produced
>by MCG +10-24-007.
>
>Sincerely Yours,
>Hitoshi Yamaoka, Kyushu Univ., Japan
Robert Fidrich
HAA/VSS
www.zpok.hu/albakor/fidusz