A kék kontinuum és a nagy ledobódási sebesség (17600 km/s) nekem azt mondja,
hogy fiatal az SN, tehát még sokat fényesedhet.

Sry


> A PTF függetlenül megtalálta, és már spektrumuk is van.
>
> Sry
>
>
> ------------------------------------------------------------------------------
>
> The Astronomer´s Telegram                   http://www.astronomerstelegram.org
>
> ==============================================================================
> ATEL #3398      ATEL #3398
>
> Title: PTF Discovery of a Type II Supernova in M51
> Author: J. M. Silverman, A. V. Filippenko, S. B. Cenko (UC Berkeley)
> report on behalf of a larger collaboration:
> Queries: cenko@astro.berkeley.edu
> Posted: 3 Jun 2011; 09:15 UT
> Subjects:Optical, Supernovae
>
> The PTF (ATEL #1964, #3253; http://www.astro.caltech.edu/ptf/; Law et al.
> 2009, PASP, 121, 1395; Rau et al. 2009, PASP, 121, 1334) reports the discovery
> of a new supernova in M51. This object was independently discovered first
> by A. Riou and reported as PSN J13303600+4706330.  PTF discoveries are
> made by autonomous PTF software, as well as by the Galaxy Zoo Supernova
> Project (Smith et al. 2011, MNRAS, 412, 1309; http://supernova.galaxyzoo.org
> ).
>
> Name     | RA (J2000)  | Dec (J2000) | Discovery | Mag  | Redshift | Type
>
> | Spec.  | Phase | Instrument     | Notes
> PTF11eon | 13 30 05.08 | +47 10 11.2 | Jun 01.19 | 13.5 | 0.002    | SN
> II
> | Jun. 2 |       | Keck I+ LRIS   | exact magnitude uncertain due to
> saturation
>
> The spectrum shows a relatively blue continuum, with well-developed P-Cygni
> profiles in the Balmer series.  After removal of the host-galaxy recession
> velocity of 600 km/s (Rush, et al. 1996, ApJ, 473, 130), the minimum of
> the H-alpha absorption is blueshifted by about 17,600 km/s.
>
> PTF is a collaboration of Caltech, LCOGT, the Weizmann Institute, LBNL,
> Oxford, Columbia, IPAC, and Berkeley.
>
> ------------------------------------------------------------------------------
> Password Certification: S. Bradley Cenko (cenko@astro.berkeley.edu)
> http://www.astronomerstelegram.org/?read=3398
> ==============================================================================
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