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Novinky ze světa proměnných hvězd a Sekce PHE ČAS
26. 11. 2009: MEDUZA | Vzplanula Nova Eridani 2009
Itagaki-san objevil v souhvězdí Eridanus nový jasný objekt (8,1 mag) na souřadnicích 044754.21 -101043.1
Původní doměnka, že se jedná o trpasličí novu typu WZ Sge se nepotvrdila. Spektra ukazují, že objekt je klasická nova typu He/N.
Níže jsou zprávy z VSNETu ------------------------------
VSNET 11692:
According to CBET 2050, Itagaki-san has discovered a bright (8.1 mag)
eruptive object in Eridanus (position 044754.21 -101043.1).
Although this object has been suggested to be a possible nova,
the object might also be a WZ Sge-type dwarf nova.
Spectroscopic and time-resolved photometric observations are urged.
VSNET 11693:
Following the posting on the Central Bureau's unconfirmed-objects
webpage & Cbet No. 2050 about a possible Nova in Eri we performed some
follow-up of this object remotely through a 0.25-m, f/3,4 reflector +
CCD, from GRAS Observatory (near Mayhill, NM).
On our images taken on November 26.36 we can confirm the presence of
an optical counterpart with unfiltered CCD magnitude about 8.2
(UCAC2 Catalogue reference stars) at coordinates:
R.A. = 04 47 54.12, Decl.= -10 10 43.1
(equinox 2000.0; UCAC2 catalogue reference stars).
A comparison with a DSS red plate (limiting magnitude about 20),
obtained on 1990, Nov. 23, shows the proximity of a 15mag star to the
position of the possible nova in Eri.
On the blog our confirmation image and an animation using a DSS archive plate:
http://bit.ly/4mLBz1
or
http://remanzacco.blogspot.com/2009/11/possible-nova-in-eridanus.html
Best Regards,
Ernesto Guido & Giovanni Sostero
http://remanzacco.blogspot.com
http://twitter.com/comets77
VSNET-ALERT 11694:
M. Fujii (Okayama, Japan) obtained a low-resolution spectrum
of the object. He reports that the spectrum shows the Balmer
(FWHM of H_alpha emission is 3200 km/s), He I (447.1, 501.6,
587.6, 667.8, 706.5 nm), N III (464.0 nm), Na I D (589.2 nm),
O I(777.3, 844.6 nm), and Mg II (823.2 nm) emission lines.
http://otobs.org/FBO/fko/nova/pn_eri_20091126.gif
I also obtained a spectrum of the object which shows broad Balmer,
He I, and N III emission lines. The FWHM of H_alpha emission is 3400km/s.
http://www.kwasan.kyoto-u.ac.jp/~maehara/novae/ERInova2009_20091126.gif
These features suggest that this object is a He/N nova.
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Nová data MEDÚZA:
CCD: P. Dubovský: NOVACas2021 Cas, Z And, V 1413 Aql, NSV16874 Aur, UV Aur, : NOVACas2021 Cas, P. Dubovský: NOVACas2021 Cas, OJ287 Cnc, T CrB, TX CVn, VIZ: P. Dubovský: CR Boo, TT Boo, UZ Boo, HT Cam, Z Cam, AK Cnc, AT Cnc, EG Cnc, GY Cnc, OJ287 Cnc, SY Cnc, YZ Cnc, AL Com, T CrB, DO Dra, U Gem, AH Her, HZ Her, V 592 Her, V 660 Her,
Aktivní pozorovatelny: Pozorovatelský chat
Magpie observatory (FTP)
(Martin Bartošík)
STATUS: Aktivní20:00 - 06:00 PROGRAM: V 709 Cas, main program - CV and transits of exoplanets
Observatorio Astronómico Giordano Bruno
(Fco- Manuel Santos Álamo)
STATUS: Aktivní20:38 - 04:38 PROGRAM: De 20:00 a 02:30
Osservatorio Astronomico Citta di Seveso (Pietro Aceti)
STATUS: Aktivní12:30 - 10:45 PROGRAM:
Palidoro (Giuseppe Conzo) STATUS: Aktivní10:47 - 18:47 PROGRAM:
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