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Dátum: 2013-07-20 12:06:23
Feladó: hadhazics@primposta.hu
Tárgy: AAVSO Alert Notice 487: Supernova 2013dy in NGC 7250 = PSN J22181760+4034096
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=0A  =0A=0AAAVSO Alert Notice 487=0A =0A Supernova 2013dy in NGC 7250 =3D P=
SN J22181760+4034096=0A July 19, 2013=0A =0A Event: Supernova 2013dy in NGC=
7250 (Lacerta) =3D PSN J22181760+4034096=0A =0A Independent discovery by: =
=0A  - Lick Observatory Supernova Search (LOSS), reported by C. =0A Casper,=
W. Zheng, W. Li, and A. V. Filippenko (University of =0A California at Ber=
keley) and S. B. Cenko (Goddard Space Flight =0A Center)=0A  - Kuniaki Goto=
(Miyoshi-shi, Hiroshima Prefecture, Japan), =0A communicated by Shoichi It=
oh (National Astronomical Observatory =0A of Japan) =0A =0A Discovery Magni=
tude: =0A  - LOSS: CCD magnitude 17.0, on unfiltered Katzman Automated =0A =
Imaging Telescope (KAIT) images=0A  - Goto: about 16, using 35-cm Schmidt-C=
assegrain telescope=0A =0A Discovery date: =0A  - LOSS: 2013 July 10.45 UT=
=0A  - Goto: 2013 July 11.735 UT =0A =0A Coordinates: R.A. =3D 22 18 17.60,=
Decl.=3D +40 34 09.6 (2000.0)=0A SN 2013dy is offset 2.1" west, 24.9" nort=
h from the nucleus of NGC =0A 7250 (coordinates and offset from LOSS).=0A =
=0A Spectra: SN 2013dy is a Type-Ia supernova discovered one to two =0A wee=
ks before maximum, according to spectra by: =0A  - D. D. Balam (Dominion As=
trophysical Observatory, National =0A Research Council of Canada (NRCC)), M=
. L. Graham (Las Cumbres =0A Observatory Global Telescope, University of Ca=
lifornia at San =0A Diego), and E. Y. Hsiao (Las Campanas Observatory) obta=
ined on =0A Jul 13.31 UT with the NRCC 1.82-m Plaskett Telescope;=0A  - J.-=
J. Zhang (Yunnan Astronomical Observatory (YNAO)) and X.-F. =0A Wang (Tsing=
hua University) obtained on Jul 14.75 UT with the=0A 2.4-m telescope (+YFOS=
C) at YNAO LiJiang Gaomeigu Station;=0A  - W. Zheng (University of Californ=
ia, Berkeley), S. B. Cenko =0A (Goddard Space Flight Center, NASA), K. I. C=
lubb, O. D. Fox, P. L. =0A Kelley, and A. V. Filippenko (University of Cali=
fornia, Berkeley), =0A and J. M. Silverman (University of Texas) obtained o=
n Jul 11.7 =0A with the 10-m Keck II telescope (+ DEIMOS spectrograph) at K=
eck =0A Observatory.=0A =0A Observations reported to the AAVSO:=0A 2013 Jul=
8.45 UT, <18.5 U (unfiltered KAIT CCD photometry, via =0A CBET 3588);=
=0A 10.086, 19.1 (F. Ciabattari, Borgo a Mozzano, Italy, 0.5-m =0A Newtonia=
n telescope + FLI Proline 4710 camera, via CBET 3588);=0A 10.7, 16.6 (A. Ma=
ntero, Bernezzo, Italy; 0.25-m f/4 reflector, =0A via CBET 3588);=0A 11.909=
, 16.0 (G. Masi and F. Nocentini, remotely using 43-cm =0A robotic telescop=
e, Virtual Telescope Project facility in Ceccano, =0A Italy, via CBET 3588)=
;=0A 11.994, 16.3 V (M. Martignoni, Magnago, Italy;0.25-m f/10 Schmidt-=0A =
Cassegrain reflector, via CBET 3588);=0A 12.423, 15.7 (L. Elenin, Lyubertsy=
, Russia, and I. Molotov, =0A Moscow, Russia; remotely using 0.45-m f/2.8 t=
elescope at ISON-NM =0A Observatory near Mayhill, NM, via CBET 3588);=0A 14=
.37, 14.5 U (KAIT, via CBET 3588);=0A 15.96528, 14.5 (K. Wenzel, Grossosthe=
im, Germany, visual);=0A 16.19444, 14.4 (T. C. Hoffelder, Norway, ME, visua=
l);=0A 16.93750, 13.9 (Wenzel, visual);=0A 18.91319, 13.5 (Wenzel, visual);=
=0A =0A Charts: Charts for SN 2013dy may be created using the AAVSO =0A Var=
iable Star Plotter (VSP) at http://www.aavso.org/vsp.=0A =0A Submit observa=
tions: Please submit observations to the AAVSO =0A International Database u=
sing the name SN 2013dy.=0A =0A Notes:=0A a. Announced on IAU CBAT Central =
Bureau Electronic Telegram 3588 =0A (Daniel W. E. Green, ed.). Except for o=
bservations reported to the=0A AAVSO and Note e, all information in this Al=
ert Notice comes from =0A CBET 3588.=0A =0A b. SN 2013dy was designated PSN=
J22181760+4034096 when it was =0A posted on the CBAT TOCP webpage =0A (htt=
p://www.cbat.eps.harvard.edu/unconf/tocp.html). Note that=0A the offset was=
incorrectly posted on the TOCP page as 24.9" south.=0A  =0A c. Position en=
d figures and additional observation details for all =0A observations repor=
ted here via CBET 3588 are available in CBET 3588.=0A =0A d. SN 2013dy imag=
es:=0A  - F. Ciabattari (Jul 10.086, 19.1), at =0A http://www.flickr.com/ph=
otos/snimages/9277396759/ =0A  - Andrea Mantero (Jul 10.7, 16.6), at =0A ht=
tp://www.flickr.com/photos/andreagalaxy/9261869119/ =0A  - L. Elenin and I.=
Molotov (Jul 12.423, 15.7), at =0A http://spaceobs.org/images/TOCP/PSNJ221=
81760+4034096-20130712.png).=0A =0A e. J. Ryan (Harvard-Smithsonian Center =
for Astrophysics) reports =0A in ATel #5216 (http://www.astronomerstelegram=
.org/?read=3D5216) that =0A he and colleagues will be taking HST UV spectra=
of SN 2103dy 10 =0A times over the next month, beginning 2013 July 21 ~11:=
00 UT. He =0A requests observations at all wavelengths.=0A =0A Congratulati=
ons to the LOSS team and to Kuniaki Goto on their =0A independent discoveri=
es!=0A =0A =0A This AAVSO Alert Notice was prepared by Elizabeth O. Waagen.=
=0A =0A -------------------------------------------=0A SUBMIT OBSERVATIONS =
TO THE AAVSO=0A =0A Information on submitting observations to the AAVSO may=
be found at:=0A =0A http://www.aavso.org/observing/submit/=0A =0A ALERT NO=
TICE ARCHIVE AND SUBSCRIPTION INFORMATION=0A =0A An Alert Notice archive is=
available at the following URL:=0A http://www.aavso.org/publications/alert=
s/=0A =0A Subscribing and Unsubscribing may be done at the following URL:=
=0A http://www.aavso.org/publications/email/=0A

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RIGHT: 0px">
o;position:relative">AAVSO Alert Notice 487

Supernova 2013dy in NG=
C 7250 =3D PSN J22181760+4034096
July 19, 2013

Event: Supernov=
a 2013dy in NGC 7250 (Lacerta) =3D PSN J22181760+4034096

Independe=
nt discovery by:
  - Lick Observatory Supernova Search (LOSS), reported=
by C.
Casper, W. Zheng, W. Li, and A. V. Filippenko (University of r> California at Berkeley) and S. B. Cenko (Goddard Space Flight
Cente=
r)
  - Kuniaki Goto (Miyoshi-shi, Hiroshima Prefecture, Japan),
com=
municated by Shoichi Itoh (National Astronomical Observatory
of Japan)=


Discovery Magnitude:
  - LOSS: CCD magnitude 17.0, on unfilt=
ered Katzman Automated
Imaging Telescope (KAIT) images
  - Goto: ab=
out 16, using 35-cm Schmidt-Cassegrain telescope

Discovery date: <=
br>  - LOSS: 2013 July 10.45 UT
  - Goto: 2013 July 11.735 UT

=
Coordinates: R.A. =3D 22 18 17.60, Decl.=3D +40 34 09.6 (2000.0)
SN 201=
3dy is offset 2.1" west, 24.9" north from the nucleus of NGC
7250 (coo=
rdinates and offset from LOSS).

Spectra: SN 2013dy is a Type-Ia su=
pernova discovered one to two
weeks before maximum, according to spect=
ra by:
  - D. D. Balam (Dominion Astrophysical Observatory, National r> Research Council of Canada (NRCC)), M. L. Graham (Las Cumbres
Obser=
vatory Global Telescope, University of California at San
Diego), and E=
. Y. Hsiao (Las Campanas Observatory) obtained on
Jul 13.31 UT with th=
e NRCC 1.82-m Plaskett Telescope;
  - J.-J. Zhang (Yunnan Astronomical O=
bservatory (YNAO)) and X.-F.
Wang (Tsinghua University) obtained on Ju=
l 14.75 UT with the
2.4-m telescope (+YFOSC) at YNAO LiJiang Gaomeigu S=
tation;
  - W. Zheng (University of California, Berkeley), S. B. Cenko <=
br> (Goddard Space Flight Center, NASA), K. I. Clubb, O. D. Fox, P. L.
=
Kelley, and A. V. Filippenko (University of California, Berkeley),
an=
d J. M. Silverman (University of Texas) obtained on Jul 11.7
with the =
10-m Keck II telescope (+ DEIMOS spectrograph) at Keck
Observatory. >
Observations reported to the AAVSO:
2013 Jul 8.45 UT, <18.5 U=
(unfiltered KAIT CCD photometry, via
CBET 3588);
10.086, 19.1 (F.=
Ciabattari, Borgo a Mozzano, Italy, 0.5-m
Newtonian telescope + FLI P=
roline 4710 camera, via CBET 3588);
10.7, 16.6 (A. Mantero, Bernezzo, I=
taly; 0.25-m f/4 reflector,
via CBET 3588);
11.909, 16.0 (G. Masi =
and F. Nocentini, remotely using 43-cm
robotic telescope, Virtual Tele=
scope Project facility in Ceccano,
Italy, via CBET 3588);
11.994, =
16.3 V (M. Martignoni, Magnago, Italy;0.25-m f/10 Schmidt-
Cassegrain r=
eflector, via CBET 3588);
12.423, 15.7 (L. Elenin, Lyubertsy, Russia, a=
nd I. Molotov,
Moscow, Russia; remotely using 0.45-m f/2.8 telescope a=
t ISON-NM
Observatory near Mayhill, NM, via CBET 3588);
14.37, 14.=
5 U (KAIT, via CBET 3588);
15.96528, 14.5 (K. Wenzel, Grossostheim, Ger=
many, visual);
16.19444, 14.4 (T. C. Hoffelder, Norway, ME, visual); > 16.93750, 13.9 (Wenzel, visual);
18.91319, 13.5 (Wenzel, visual);
=

Charts: Charts for SN 2013dy may be created using the AAVSO
Vari=
able Star Plotter (VSP) at _blank">http://www.aavso.org/vsp.

Submit observations: Please =
submit observations to the AAVSO
International Database using the name=
SN 2013dy.

Notes:
a. Announced on IAU CBAT Central Bureau Ele=
ctronic Telegram 3588
(Daniel W. E. Green, ed.). Except for observatio=
ns reported to the
AAVSO and Note e, all information in this Alert Noti=
ce comes from
CBET 3588.

b. SN 2013dy was designated PSN J221=
81760+4034096 when it was
posted on the CBAT TOCP webpage
( f=3D"http://www.cbat.eps.harvard.edu/unconf/tocp.html" target=3D"_blank">ht=
tp://www.cbat.eps.harvard.edu/unconf/tocp.html). Note that
the offs=
et was incorrectly posted on the TOCP page as 24.9" south.
 
c. Pos=
ition end figures and additional observation details for all
observati=
ons reported here via CBET 3588 are available in CBET 3588.

d. SN =
2013dy images:
  - F. Ciabattari (Jul 10.086, 19.1), at
http://www.flickr.com/photos/snimages/9277396759/" target=3D"_blank">http:/=
/www.flickr.com/photos/snimages/9277396759/
  - Andrea Mantero (Jul=
10.7, 16.6), at
9261869119/" target=3D"_blank">http://www.flickr.com/photos/andreagalaxy/92=
61869119/
  - L. Elenin and I. Molotov (Jul 12.423, 15.7), at
=
g" target=3D"_blank">http://spaceobs.org/images/TOCP/PSNJ22181760+4034096-2=
0130712.png).

e. J. Ryan (Harvard-Smithsonian Center for Astro=
physics) reports
in ATel #5216 ( ram.org/?read=3D5216" target=3D"_blank">http://www.astronomerstelegram.org/=
?read=3D5216) that
he and colleagues will be taking HST UV spectra=
of SN 2103dy 10
times over the next month, beginning 2013 July 21 ~11=
:00 UT. He
requests observations at all wavelengths.

Congratu=
lations to the LOSS team and to Kuniaki Goto on their
independent disc=
overies!


This AAVSO Alert Notice was prepared by Elizabeth O.=
Waagen.

-------------------------------------------
SUBMIT OB=
SERVATIONS TO THE AAVSO

Information on submitting observations to =
the AAVSO may be found at:

ng/submit/" target=3D"_blank">http://www.aavso.org/observing/submit/ >
ALERT NOTICE ARCHIVE AND SUBSCRIPTION INFORMATION

An Alert =
Notice archive is available at the following URL:
.aavso.org/publications/alerts/" target=3D"_blank">http://www.aavso.org/pub=
lications/alerts/

Subscribing and Unsubscribing may be done at=
the following URL:
" target=3D"_blank">http://www.aavso.org/publications/email/
=


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