Supernovae 2011by in NGC 3972

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Supernovae 2011by in NGC 3972

This page is devoted to information on Supernova 2011by in NGC 3972. Basic information on this SN, including the last reported brightness, on this Supernova can be found on the main page. Information on the original web pages for many of these images can be found on the links web page.

Discovered by Zhangwei Jin and Xing Gao (China). This one a Type Ia found young. We have a Photometry reference image made by Odd Trondal. This supernova is in the Constellation Ursa Major.

Web pages dedicated to this SN.

AAVSO Alert Notice 438
AAVSO Alert Notice 439
[vsnet-campaign-sn 1055] nearby SN Ia 2011by
[vsnet-campaign-sn 1058] nearby SN Ia 2011by
[vsnet-campaign-sn 1059] SN2011by spectrum (May 11.8)
Polish Society of Amateur Astronomers 2011by page

The following is a list of images of this SN, in chronological order. Click on the name in the "Image Credit" column to see the image. Times and dates are in UT unless otherwise noted. If you know of any others, please tell me!

Image Credit	Date	Mag	Filter	Comments
Thomas Hebbeker	2011/04/25.947		C	Prediscovery
Zhangwei Jin and Xing Gao	2011/04/26.823	14.2	C	Discovery
Fabio Martinelli and Fabio Briganti	2011/04/26.855		C
Diego Rodr�guez	2011/04/27	14.38	C
Joseph Brimacombe	2011/04/27.332	14.5	CR
Andy Lee	2011/04/27		C
Krzysztof Kida	2011/04/27.90	14.3	C	negative
Nick James	2011/04/27.913	14.38	CR
Rodrigo Losada	2011/04/27.937	14.25	C
Robert Koff	2011/04/28	14.59	V
Henryk Lauterbach	2011/04/28.863	14.3	C
Denis Buczynski	2011/04/28.944	14.3	C
Robert Wahlstrom	2011/04/28.953	14.1	V
David Storey	2011/04/29.068	13.9	V
Tomasz L. Czarnecki	2011/04/29.154	14.13	C
William Wiethoff	2011/04/29.2		C
Joel Nicolas	2011/04/29.904	13.7	CR
Manfred Mrotzek	2011/04/29.921		C
JM Llapasset	2011/04/30.821	13.4	CR	mirror
JM Llapasset	2011/04/30.828	13.40	I
JM Llapasset	2011/04/30.832	13.60	Rc
JM Llapasset	2011/04/30.836	13.70	V	mirror
JM Llapasset	2011/04/30.842	13.90	B
Les Thomas	2011/04/30.900		C
George Kristiansen	2011/04/30.929	13.48	C	Drawing mirror
Paul Cannon	2011/04/30.985	14.5	CR
David Storey	2011/05/01.083	13.8	V
Andy Cason	2011/05/01.086	13.64	V
Wojciech Piskorz	2011/05/01.361	13.6	C	Negative version
JM Llapasset	2011/05/01.823	13.2	CR	mirror
JM Llapasset	2011/05/01.827	13.20	I
JM Llapasset	2011/05/01.830	13.30	Rc
JM Llapasset	2011/05/01.834	13.60	V	mirror
JM Llapasset	2011/05/01.839	13.70	B
Joel Nicolas	2011/05/01.873	13.3	CR
Giancarlo Cortini	2011/05/01.8	13.3	C
Paolo Demaria	2011/05/01.950	13.4	R	color, black and white version
Tomasz L. Czarnecki	2011/05/02.078	13.45	C
Nick Hows	2011/05/02.891	13.5	C
Lode Stevens	2011/05/03.00	13.4	C
Joel Nicolas	2011/05/03.838	13.0	CR
Richie Jarvis	2011/05/03		C
Martin Mobberley	2011/05/03.886		C
Raymond Kneip	2011/05/03.875	13.2	C
Patrick Sogorb	2011/05/03.877	13.00	CR
Nick Hows	2011/05/03.914	13.3	C
Phil Sullivan	2011/05/04.219	13.297	V
Joel Nicolas	2011/05/04.901	12.9	CR
Nick Hows	2011/05/04.924	13.3	C
Maurice Gavin	2011/05/05.863		C
Nick Hows	2011/05/05.910		C
Giancarlo Cortini	2011/05/05.95	12.9	C
Joel Nicolas	2011/05/06.900	12.8	CR
Krzysztof Kida	2011/05/06.91	13.0	V	negative image
Tibor Horvath	2011/05/06.987		C
George Kristiansen	2011/05/07.083	13.0	C
Stan Howerton	2011/05/07.217	12.94	C
Rafael Ferrando	2011/05/07.934	12.8	CR
Rafael Benavides	2011/05/07.962	12.71	CR
Jorma Mantyla	2011/05/08.057		C
JM Llapasset	2011/05/08.823	12.70	CR
JM Llapasset	2011/05/08.831	12.60	Rc
JM Llapasset	2011/05/08.835	12.66	V
JM Llapasset	2011/05/08.840	13.00	B
Adolfo San Segundo	2011/05/08.845	13.82	V
Paolo Corelli	2011/05/08.846	13.0	V
JM Llapasset	2011/05/08.848	12.70	I
Manfred Mrotzek	2011/05/08.863	12.2	V
Raymond Kneip	2011/05/08.885	12.8	C
Juanjo Gonz�lez	2011/05/08.888	12.7	R	color, nice
Diego Rodr�guez	2011/05/08.908	12.81	R
Rui Branco	2011/05/08.924	12.6	C
Nick Howes	2011/05/08.927	12.9	C
Rui Branco	2011/05/08.964	12.8	C
Heinz Kerner and Thomas Wahl	2011/05/08.990		C
Jose Carrillo	2011/05/09.890	12.98	cR
Nick Howes	2011/05/09.927	12.3	C	color version
Thomas Langhans	2011/05/11.25		C
Jordi Camarasa	2011/05/11.854	12.77	R
Marc Serrau	2011/05/12.877	12.70	B
Joel Nicolas	2011/05/12.878	12.80	CR
Marc Serrau	2011/05/12.900	13.10	V
Nick Howes	2011/05/13.415	12.5	R
Rui Branco	2011/05/14.500	12.9	C
Marc Serrau	2011/05/14.895	13.10	R
Raymond Kneip	2011/05/14.896	12.8	C
Marc Serrau	2011/05/14.907	12.70	V
Marc Serrau	2011/05/14.917	12.70	B
JM Llapasset	2011/05/16.061	12.86	CR	mirror
JM Llapasset	2011/05/16.068	12.96	Rc
JM Llapasset	2011/05/16.065	13.1	I
JM Llapasset	2011/05/16.072	12.98	V	mirror
JM Llapasset	2011/05/16.077	13.3	B
JM Llapasset	2011/05/16.884	12.9	CR
Giancarlo Cortini	2011/05/16.95	13.1	C
Nick Howes	2011/05/18.936	13.4	C
JM Llapasset	2011/05/19.891	13.1	CR
JM Llapasset	2011/05/19.898	13.1	Rc
JM Llapasset	2011/05/19.904	13.0	V
JM Llapasset	2011/05/19.910	13.5	B
JM Llapasset	2011/05/19.926	13.5	I
Tomasz L. Czarnecki	2011/05/20.050	13.15	C
Marc Serrau	2011/05/20.863	13.10	B
Jose Carrillo	2011/05/20.874	13.1	R
Marc Serrau	2011/05/20.885	13.60	V
Marc Serrau	2011/05/20.890	14.20	R
Rafael Ferrando	2011/05/20.898	13.3	CR
Felipe Pe�a	2011/05/20.922	13.2	C
Pedro Re'	2011/05/20.943	13.17	C
Ramon Naves	2011/05/21.852	13.21	V
Pedro Re'	2011/05/21.883	13.10	C
Rodrigo Losada	2011/05/22.042	13.3	CR
Marc Serrau	2011/05/23.868	13.60	R
Marc Serrau	2011/05/23.876	13.60	V
JM Llapasset	2011/05/23.895	13.45	CR	mirror
Markus B�tikofer	2011/05/23.927		C	color
Rui Branco	2011/05/22.920	13.15	C
Joel Nicolas	2011/05/23.943	13.5	CR
JM Llapasset	2011/05/25.888	13.5	CR
JM Llapasset	2011/05/25.897	13.6	Rc
JM Llapasset	2011/05/25.902	13.65	V
Giancarlo Cortini	2011/05/26.03	13.5	C
Joel Nicolas	2011/05/28.911	13.60	CR
Rafael Benavides	2011/05/28.913	13.57	CR
William Wiethoff	2011/06/02.264		C
Rui Branco	2011/06/02.886	13.85	C
Pedro Re'	2011/06/02.894	13.85	C
Raymond Kneip	2011/06/02.937	13.8	C
Pedro Re'	2011/06/03.889	13.91	C
David Storey	2011/06/03.945	14.16	V
Stan Howerton	2011/06/04.262	14.1	C
Pedro Re'	2011/06/04.881	14.14	C
Anthony Ayiomamitis	2011/06/05.000		C
William Wiethoff	2011/06/05.255		C
Giancarlo Cortini	2011/06/09.95	14.1	C
Pedro Re'	2011/06/10.889	15.54	CR
Pedro Re'	2011/06/11.897	14.61	CR	thin clouds
Rui Branco	2011/06/11.986	14.62	CR
Joel Nicolas	2011/06/15.911	14.50	CR
Thomas Langhans	2011/06/17.22		C
Pedro Re'	2011/06/18.895	15.02	CR
Rui Branco	2011/06/18.950	15.04	CR
JM Llapasset	2011/06/19.877	14.6	CR
Joel Nicolas	2011/06/19.877	14.7	CR
Giancarlo Cortini	2011/06/20.95	14.4	C
JM Llapasset	2011/06/24.890	14.8	CR
Alessandro Dimai	2011/06/24.92	14.9	C
Rafael Benavides	2011/06/25.947	14.89	CR
JM Llapasset	2011/06/26.859	15.0	CR
JM Llapasset	2011/07/01.870	15.05	CR
Thomas Langhans	2011/07/04.23		C
Rafael Benavides	2011/07/04.928	14.97	CR
JM Llapasset	2011/07/08.852	15.3	CR
JM Llapasset	2011/07/29.854	15.9	CR
Giancarlo Cortini	2011/08/02.90	16.2	C
JM Llapasset	2011/08/04.839	16.0:	CR
Giancarlo Cortini	2011/08/20.83	16.5	C
JM Llapasset	2011/09/08.824	16.90	CR
Giancarlo Cortini	2011/11/19.20	18.3	C
Joseph Brimacombe	2011/11/26.425	18.4	L
Thomas Langhans	2012/01/28.530	> 20.0	C

Light curves and Spectra:

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David Bishop