Sziasztok!
Tom Krajci szerint ez a "szupernova-imposztor" szepen fenyesedik, es mar 14 magni
koruli. Erdemes megprobalni eszlelni, fotozni...
udv:
Fidusz
* * *
Date: Sat, 15 Oct 2011 12:38:29 -0600
From: Tom Krajci
Subject: [baavss-alert] PSN J10081059+5150570 IN UGC 5460
Images from morning of 15 Oct at Astrokolkhoz with AAVSONet scope K35
(C14, STL-1001, BVRI Astrodon interference filters) show this object is
now at about mag 14. (Last week it was mag 15)
This object keeps getting brighter, and easier to image. You don´t need
a big scope to cover it.
--
-------------------------------------------
Tom Krajci
Cloudcroft, New Mexico
http://picasaweb.google.com/tom.krajci
Center for Backyard Astrophysics (CBA)
http://cbastro.org/ CBA New Mexico
American Association of Variable Star
Observers (AAVSO): KTC http://www.aavso.org/
-------------------------------------------
> ----- Original Message -----
> From: "Tom Boles" >
> To: "Roger Pickard"
> >
> Sent: Thursday, October 06, 2011 4:50 PM
> Subject: Images of UGC5460
>
> > Hi Roger
> >
> > I have been requested by our Italian colleagues in Italy to see if
> > ongoing images of the optical transient that I discovered in UGC
> > 5460 can be captured. This is not a supernova but could potentially
> > be a much more interesting object. I have copied the relevant
> > circular below.
> >
> > Fits images can either be sent to me at: tom.boles@zen.co.uk
>
> > or directly to Andrea Pastorello at: a.pastorello@qub.ac.uk
>
> >
> > Best wishes and thanks
> > Tom
> >
> > Electronic Telegram
> > No. 2851
> > Central Bureau for Astronomical Telegrams
> > INTERNATIONAL ASTRONOMICAL UNION
> > CBAT Director: Daniel W. E. Green; Hoffman Lab 209; Harvard
> > University; 20 Oxford St.; Cambridge, MA 02138; U.S.A.
> > e-mail: cbatiau@eps.harvard.edu
> (alternate cbat@iau.org )
> > URL http://www.cbat.eps.harvard.edu/index.html
> > Prepared using the Tamkin Foundation Computer Network
> >
> > PSN J10081059+5150570 IN UGC 5460
> > T. Boles, Coddenham, England, reports the discovery of an
> > apparent supernova (mag 17.0) on an unfiltered CCD image taken on
> > Sept. 29.182 UT using a 0.35-m reflector, with the new object
> > located at R.A. = 10h08m10s.58 +/- 0s.01, Decl. = +51o50´57".1 +/-
> > 0".1 (equinox 2000.0), which is approximately 12".4 east and 17".2
> > north of the center of UGC 5460. Additional magnitudes for the
> > variable (which was designated PSN J10081059+5150570 when it was
> > posted on the Central Bureau´s TOCP webpage), provided by Boles:
> > 1989 Dec. 6, [20.5 (Digitized Sky Survey, red); 1992 Feb. 24, [21.0
> > (Digitized Sky Survey, > blue); 2011 Apr. 6, [19.5; 30, [19.5; Sept.
> > 30.086, 16.9.
> >
> > A. Pastorello, Dipartimento di Astronomia, Universita di Padova
> > and Instituto Nazionale di Astrofisica, Osservatorio Astronomico di
> > Padova; V. Stanishev, Centro Multidisciplinar de Astrofisica,
> > Istituto Superior Tecnico, Lisbon; and S. J. Smartt and M. Fraser,
> > Queen´s University, Belfast, on behalf of a larger collaboration,
> > report that a spectrogram (range 320-910 nm, resolution 1.4 nm) of
> > PSN J10091059+5150570, obtained by M. Lindborg on Sept. 30.22 UT
> > with the Nordic Optical Telescope (+ ALFOSC), suggests that
> > it is a "supernova impostor" sharing some similarity with the
> > eruption of the luminous blue variable "UGC 2773-OT" (Smith et al.
> > 2010, A.J. 139, 1451). The spectrum shows very narrow lines of H, Ca
> > II (H and K and the near-infrared triplet, with P-Cyg profile), and
> > a forest of narrow Fe II absorption features. Also, prominent Na I
> > D, Sc II, and Ba II features are clearly detected in absorption.
> > Note that, adopting for UGC 5460 a distance of 19.2 Mpc
> > and a negligible red dening, the a bsolute magnitude of the
> > transient would be about -14.4.
> >
> > NOTE: These ´Central Bureau Electronic Telegrams´ are sometimes
> > superseded by text appearing later in the printed IAU Circulars.
> >
> > (C) Copyright 2011 CBAT
> > 2011 October 2 (CBET 2851) Daniel W. E. Green
----- End forwarded message -----
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Fidusz (FIDRICH Robert)
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