Supernovae 2011dh in M51

This page is devoted to information on Supernova 2011dh in M51.   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.

image Discovered by Tom Reiland (USA); Thomas Griga (Germany); Amedee Riou (France); and Stephane Lamotte Bailey (France).   This supernova just had to happen while I was on vacation...   This one a Type IIb.   We have a Photometry reference image made by Odd Trondal.   This supernova is in the Canes Venatici.

Call for observations:

As you may know, a new supernova has been discovered in the whirlpool galaxy, M51: This is a very exciting scientific discovery, to which amateurs can further significantly contribute! We at the Palomar Transient Factory seek more image data of M51 obtained between May 30 and June 2, 2011. So, if you have imaged this galaxy using a telescope and a digital camera, your data may be very useful to this project! or else, if you can distribute this message to others which may have relevant data, that would be great!

In case such data exist, please send the raw images, specify the filter(s) used and if possible send images of the same field taken with the same instrument and telescope before May 30, all to:

Your help could be crucial for great scientific discoveries! we will not use any data without permission, and will of course credit all useful images.

Many thanks,

Iair Arcavi and Avishay Gal-Yam (for the PTF)

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 CreditDateMagFilterComments
HST Cprogenitor
Stephane Bailey 2011/05/30.105CNot present
CROSS 2011/05/30.999CNot present
Lode Stevens 2011/05/31.059CNot present
Lode Stevens 2011/05/31.105CNot present
Mike Weasner 2011/05/31.184CNot present
John Dwyer 2011/05/31.298CNot present
John Dwyer 2011/05/31.365CNot present
Vadim Alekseev 2011/05/31.840Cprediscovery
Claude Diot 2011/05/31.92612.9Cprediscovery
Lode Stevens 2011/05/31.949Cprediscovery
Stephane Bailey 2011/05/31.949CDiscovery
Lode Stevens 2011/05/31.950Cprediscovery (step binary?)
Thomas Griga 2011/05/31.95414.1CDiscovery
Patte Synco 2011/05/31.986C
Lode Stevens 2011/05/31.998C
Ray Gralak 2011/06/01.183C
PTF 2011/06/01.1913.5CPTF detection subtracted image
John Dwyer 2011/06/01.190C color image
Ed Johnson 2011/06/01.267C test image
Gennadii Borisov 2011/06/01.810C FITS
Amédée Riou 2011/06/01.893C
Thierry Remy 2011/06/01.940C
Manolo Barco 2011/05/31.949CDiscovery
Stephane Bailey 2011/06/02.036CDiscovery
Guoyou Sun, Xing Gao 2011/06/02.7214.4C
Marc Serrau 2011/06/02.87914.20CR
Fernand Van Den Abbeel 2011/06/02.90014.40CR mirror
Joao Gregorio 2011/06/02.90014.23Ic
Giancarlo Cortini 2011/06/02.9215.2C
Philippe Dupouy 2011/06/02.92814.6RDiscovery
Jean Francois Soulier 2011/06/02.94514.50CR
Soulier 2011/06/02.945C
Ron Arbour 2011/06/02.95815.0C
Manolo Barco 2011/06/02.964C
David Davies 2011/06/03.00C
Lode Stevens 2011/06/03.102C
Robert Koff 2011/06/03.1814.8C
Eric Briggs 2011/06/03.275C
Joseph Brimacombe 2011/06/03.30814.9C wide field
Toru Yusa 2011/06/03.46914.5C
Guoyou Sun, Xing Gao 2011/06/03.64714.2V
Maurice Gavin 2011/06/03.89C
Diego Rodríguez 2011/06/03.89714.4CR mirror
Manfred Mrotzek 2011/06/03.900C
Joao Gregorio 2011/06/03.90114.53C
Joao Cruz 2011/06/03.90614.13C
Juanjo González 2011/06/03.91414.27CR
Martin Mobberley 2011/06/03.916C
Thorsten Zilch 2011/06/03.916C
Rui Branco 2011/06/03.91714.48CR
Pedro Re 2011/06/03.92114.34C animated gif
Mogens Zachariasen 2011/06/03.925C
Juan-Luis Carballo 2011/06/03.92914.31CRcolor
Alex R Pratt 2011/06/03.93514.3C
Nick James 2011/06/03.938C
Nick James 2011/06/03.94014.86V
Felipe Peña 2011/06/03.94314.2C
Sonka Adrian 2011/06/03.95114.66CR
David Grennan 2011/06/03.96414.9C
Rafael Benavides 2011/06/03.97114.3CR
Thorsten Zilch 2011/06/03.972Ccolor
Raymond Kneip 2011/06/03.97914.5C
Dave Storey 2011/06/03.99214.92CV
Jerry Lodriguss 2011/06/04.0Ccolor
Sander Pool 2011/06/04.100C
George Normandin 2011/06/04.194C mirror mirror
Stan Howerton 2011/06/04.21914.5C
William Wiethoff 2011/06/04.246C
Patrick Wiggins 2011/06/04.340C
Guoyou Sun, Xing Gao 2011/06/04.66913.9V
Rui Branco 2011/06/04.90814.2CR
Joao Gregorio 2011/06/04.92514.24Rc
Markus Noller 2011/06/04.927C color
Sylvain Reuzé 2011/06/04.938C
Krzysztof Kida 2011/06/04.9414.32C
Mogens Zachariasen 2011/06/04.942C
Rafael Benavides 2011/06/04.94414.03CR
Pedro Re 2011/06/04.94814.24C animated gif
Anthony Ayiomamitis 2011/06/04.958C
Joao Cruz 2011/06/05.00014.3C
William Wiethoff 2011/06/05.224C
Salomon Ibarra 2011/06/05.29813C
Yasuo Sano 2011/06/05.63614.15CR mirror
Domenico Licchelli 2011/06/05.883Cwith supernova 2005cs
Felipe Peña 2011/06/05.91513.8C
Alexander Baransky 2011/06/05.960C
Stan Howerton 2011/06/06.15614.1C
Yasuo Sano 2011/06/06.60213.89CR
Alessandro Dimai 2011/06/06.88Ccolor
Sonka Adrian 2011/06/06.89313.82CR
Alex R Pratt 2011/06/06.95313.7C
Markus Bütikofer 2011/06/06.963Ccolor
Adam B. Smith 2011/06/07.12013.56V
George Normandin 2011/06/07.167C
Marc Murison 2011/06/0713.5Ccolor
Mantero Andrea 2011/06/07.858C
Sonka Adrian 2011/06/07.90013.56CR
Joao Gregorio 2011/06/07.900C
Maurice Gavin 2011/06/07.929C
João Porto 2011/06/08.052C
Felipe Peña 2011/06/08.91213.0C
Jose Carrillo 2011/06/08.94313.17cR
Alex Tudorica 2011/06/09.000C
Miguel Rodríguez 2011/06/09.020C
CSS 2011/06/0913.18CCSS110609:133005+471011
Giancarlo Cortini 2011/06/09.9713.3C
Joel Nicolas 2011/06/10.87712.6CR
Rafa Ferrando 2011/06/10.92913.0C
Mogens Zachariasen 2011/06/10.931C animated gif
J. Carrillo 2011/06/10.93412.86R
Pedro Re' 2011/06/10.93812.9CR
Rodrigo Losada 2011/06/10.9513.2CR
João Cruz 2011/06/10.95113.08C
Alex R Pratt 2011/06/10.95413.1C
Rui Branco 2011/06/10.97612.93CR
Stan Howerton 2011/06/11.16413.03C
Rafael Benavides 2011/06/11.91812.59CR
Rui Branco 2011/06/11.96712.84CR
Rafa Ferrando 2011/06/11.97712.9CR
Pedro Re' 2011/06/11.98512.81CR
Stan Howerton 2011/06/12.91C
Mogens Zachariasen 2011/06/12.911C
Joao Gregorio 2011/06/12.960C
Miguel Rodríguez 2011/06/13.022C
Ramon Naves 2011/06/13.87512.81V
Alex R Pratt 2011/06/13.93712.8C
Maurice Gavin 2011/06/13.962C
Andy Cason 2011/06/14.110C
Mogens Zachariasen 2011/06/14.912C
João Cruz 2011/06/14.99712.7C
J. Carrillo 2011/06/15.910C
Joel Nicolas 2011/06/15.92012.20CR
Joel Nicolas 2011/06/15.95112.34I
Joel Nicolas 2011/06/15.96912.80V
Joel Nicolas 2011/06/15.98412.50R
Joel Nicolas 2011/06/15.99113.60B
Yasuo Sano 2011/06/16.59312.58CR
Maurice Gavin 2011/06/16.897C
Alex R Pratt 2011/06/16.99212.7C
Joao Gregorio 2011/06/17.92512.5Rc
Pedro Re' 2011/06/18.93412.5CR
Rui Branco 2011/06/18.93512.43CR Animated GIF
Diego Rodríguez 2011/06/17.90912.3R
Joseph L. Salto 2011/06/18.96412.33CR
Rafael Ferrando 2011/06/18.97212.3CRcolor
Alessandro Dimai 2011/06/19.8812.2C
Joel Nicolas 2011/06/19.88612.0CR
JM Llapasset 2011/06/19.88812.1CR mirror
JM Llapasset 2011/06/19.88912.35Rc
JM Llapasset 2011/06/19.89312.15I
Joel Nicolas 2011/06/19.89812.12I
JM Llapasset 2011/06/19.89912.66V
JM Llapasset 2011/06/19.90513.6B
Mogens Zachariasen 2011/06/19.912Ccolor animated gif
Joel Nicolas 2011/06/19.91512.65V
Maurice Gavin 2011/06/19.929C
Joel Nicolas 2011/06/19.93112.3Rc
Rui Branco 2011/06/19.94412.39CR
Joel Nicolas 2011/06/19.94913.50B
Rodrigo Losada 2011/06/20.95812.5CR
Stan Howerton 2011/06/20.15312.56C
Yasuo Sano 2011/06/20.52612.45CR
Rui Branco 2011/06/20.89412.39CR
Giancarlo Cortini 2011/06/20.9512.9C
Rui Branco 2011/06/21.91912.4CR
Stan Howerton 2011/06/22.16312.57C
Rui Branco 2011/06/22.90212.43CR
J. Carrillo 2011/06/22.90512.25cR
Rafael Benavides 2011/06/22.90912.19CR
Pedro Re' 2011/06/22.93112.50CR
Rui Branco 2011/06/23.89312.47CR
Pedro Re' 2011/06/23.90613.473B
Pedro Re' 2011/06/23.96012.573V
Rafael Ferrando 2011/06/24.92912.575CR
Juan-Luis Caballo 2011/06/23.95212.13CR
Alex R Pratt 2011/06/23.96912.6C
JM Llapasset 2011/06/24.85612.08CR
JM Llapasset 2011/06/24.86913.90B
JM Llapasset 2011/06/24.86212.40Rc
JM Llapasset 2011/06/24.86412.80V mirror
Pedro Re' 2011/06/24.92912.575V
Rui Branco 2011/06/24.94712.53CR
Stan Howerton 2011/06/25.19812.71C
Yasuo Sano 2011/06/25.52412.54CR
Yasuo Sano 2011/06/25.59012.56CR
JM Llapasset 2011/06/25.85012.19CR mirror
JM Llapasset 2011/06/25.85212.11I
JM Llapasset 2011/06/25.85512.41Rc
JM Llapasset 2011/06/25.85712.88V
JM Llapasset 2011/06/25.86213.95B
Pedro Re' 2011/06/25.91612.649CR
Xavier Bros 2011/06/25.91712.29CR
Rui Branco 2011/06/25.91712.60CR
Felipe Peña 2011/06/25.95812.5C
Rafael Benavides 2011/06/25.97612.31CR
JM Llapasset 2011/06/26.86612.20CR
JM Llapasset 2011/06/26.86912.15I
JM Llapasset 2011/06/26.87212.48Rc
JM Llapasset 2011/06/26.87412.97V mirror
JM Llapasset 2011/06/26.87814.10B
Joel Nicolas 2011/06/26.89212.20CR
Joel Nicolas 2011/06/26.92712.14I
Rui Branco 2011/06/26.92812.70CR
Joel Nicolas 2011/06/26.94112.90V
Felipe Peña 2011/06/26.95312.5C
Joel Nicolas 2011/06/26.95412.45Rc
Alex R Pratt 2011/06/26.96012.85C
Yasuo Sano 2011/06/27.50012.68CR
Thorsten Zilch 2011/06/27.90013.2Ccolor
Mogens Zachariasen 2011/06/27.906CR
Rui Branco 2011/06/28.91212.86CR
Stan Howerton 2011/06/29.15613.00C
Rui Branco 2011/06/29.92012.94CR
Alex R Pratt 2011/06/29.98313.05C
Yasuo Sano 2011/06/30.57112.91CR
Rui Branco 2011/06/30.90513.01CR
Pedro Re' 2011/06/30.92012.999CR
Andy Cason 2011/07/01.126C
Yasuo Sano 2011/07/01.57212.97CR
JM Llapasset 2011/07/01.85012.60CR
JM Llapasset 2011/07/01.85212.40I
JM Llapasset 2011/07/01.85512.80Rc
JM Llapasset 2011/07/01.85713.40V
JM Llapasset 2011/07/01.86114.70B
Rui Branco 2011/07/01.92713.08CR
Jose Carrillo 2011/07/01.92712.8cR
Pedro Re' 2011/07/01.91913.093CR
Xavier Bros 2011/07/02.00212.8CR
JM Llapasset 2011/07/02.87612.65CR mirror
JM Llapasset 2011/07/02.87813.50V
Maurice Gavin 2011/07/02.930C
Rui Branco 2011/07/02.93813.15CR
Rafa Ferrando 2011/07/02.93812.8CR
Felipe Peña 2011/07/02.95012.8C
Rafael Benavides 2011/07/03.90412.87CR
William Wiethoff 2011/07/04.214C
Thomas Langhans 2011/07/04.27C
Rui Branco 2011/07/04.90413.27CR
JM Llapasset 2011/07/05.87112.80CR
JM Llapasset 2011/07/05.87313.70V
JM Llapasset 2011/07/05.87613.00Rc
Mogens Zachariasen 2011/07/05.92013.0CR
Juan-Luis Gonzalez Carballo 2011/07/05.94113.01CR
Yasuo Sano 2011/07/06.56713.23CR
Rui Branco 2011/07/06.90113.36CR
Rodrigo Losada 2011/07/06.95813.4CR
Rafa Ferrando 2011/07/07.90513.0CR
Rui Branco 2011/07/07.90813.41CR
Stan Howerton 2011/07/08.14613.56C
JM Llapasset 2011/07/08.86212.95CR
JM Llapasset 2011/07/08.86712.65I
JM Llapasset 2011/07/08.87113.10Rc
JM Llapasset 2011/07/08.87413.90V
JM Llapasset 2011/07/08.87915.20B
Mogens Zachariasen 2011/07/08.932C
Stan Howerton 2011/07/09.17413.74C
Alex R Pratt 2011/07/09.95713.6C
Willian Souza 2011/07/10.381C finder chart
Rui Branco 2011/07/10.90813.53CR
Maurice Gavin 2011/07/10.946C
Mogens Zachariasen 2011/07/11.903C
Rui Branco 2011/07/13.91713.64CR
Rui Branco 2011/07/13.92613.67CR
Alex R Pratt 2011/07/13.94913.7C
Willian Souza 2011/07/1513.77C
Thorsten Zilch 2011/07/15.91013.8C
Rui Branco 2011/07/15.96313.72CR
Stan Howerton 2011/07/16.15213.89C
Pedro Re' 2011/07/16.87913.718CR
William Wiethoff 2011/07/17.206C
Willian Souza 2011/07/1713.55C
Rui Branco 2011/07/17.92513.76CR
Yasuo Sano 2011/07/18.49813.65CR
Rui Branco 2011/07/19.91913.80CR
Rui Branco 2011/07/20.92113.82CR
Willian Souza 2011/07/2113.9C
Pedro Re' 2011/07/21.89913.833CR
Felipe Peña 2011/07/21.90213.7C
Pedro Re' 2011/07/21.94113.545R
Pedro Re' 2011/07/22.90813.842CR
Rui Branco 2011/07/22.91213.85CR
Stan Howerton 2011/07/23.14414.04C
William Wiethoff 2011/07/23.199C
Felipe Peña 2011/07/23.89913.8C
Rafael Benavides 2011/07/23.90213.51CR
Pedro Re' 2011/07/23.91813.854CR
Felipe Peña 2011/07/23.91913.7C
Alex R Pratt 2011/07/23.95113.9C
Rui Branco 2011/07/24.90313.90CR
Felipe Peña 2011/07/25.89913.8C
Stan Howerton 2011/07/26.15814.28V
Pedro Re' 2011/07/26.88813.925CR
Mogens Zachariasen 2011/07/26.89413.9C
J. Carrillo 2011/07/26.91013.64cR
Rui Branco 2011/07/26.91313.94CR
David Storey 2011/07/26.92714.67V
Rodrigo Losada 2011/07/26.9613.9CR
Rui Branco 2011/07/28.93113.97CR
JM Llapasset 2011/07/29.86013.50CR
Pedro Re' 2011/07/29.88813.967CR
Alex R Pratt 2011/07/29.91914.0C
Rui Branco 2011/07/29.92413.99CR
William Wiethoff 2011/07/30.168C
Rui Branco 2011/07/31.90214.01CR
Thorsten Zilch 2011/08/01.89614.06C
Felipe Peña 2011/08/02.88513.9C
Pedro Re' 2011/08/02.90013.995CR
Giancarlo Cortini 2011/08/02.9015.4C
Maurice Gavin 2011/08/03Ccolor
Rui Branco 2011/08/03.88614.07CR
Pedro Re' 2011/08/03.89914.039CR
Rui Branco 2011/08/05.88514.09CR
Stan Howerton 2011/08/06.14814.20CR
Rafael Ferrando 2011/08/06.86514.10CR
Felipe Peña 2011/08/06.88913.9C
Rui Branco 2011/08/07.88114.12CR
Pedro Re' 2011/08/07.88214.112CR
Alex R Pratt 2011/08/07.90014.15C
Rui Branco 2011/08/09.89114.18CR
Felipe Peña 2011/08/09.90614.5C
JM Llapasset 2011/08/10.86813.80CR
JM Llapasset 2011/08/10.87113.70I
JM Llapasset 2011/08/10.87514.00Rc
JM Llapasset 2011/08/10.87714.65V
JM Llapasset 2011/08/10.88015.70B
Rui Branco 2011/08/13.88514.23CR
Stan Howerton 2011/08/14.11714.27C
Rui Branco 2011/08/15.87114.27CR
Mogens Zachariasen 2011/08/15.871C
Alex R Pratt 2011/08/16.87814.2C
Rafa Ferrando 2011/08/17.84414.3C
Rui Branco 2011/08/17.87714.31CR
Giancarlo Cortini 2011/08/20.7515.2CR
Stan Howerton 2011/08/24.12914.52C
Felipe Peña 2011/08/26.93014.1C
Stan Howerton 2011/08/28.15114.58C
JM Llapasset 2011/08/30.84814.10CR
JM Llapasset 2011/08/30.85214.40Rc
JM Llapasset 2011/08/30.85515.10V
Stan Howerton 2011/08/31.10514.83C
Maurice Gavin 2011/08/31.87114.4Ccolor
Stan Howerton 2011/09/02.10514.88V
Felipe Peña 2011/09/05.83914.6C
JM Llapasset 2011/09/08.83314.30CR
Stan Howerton 2011/09/09.09314.98V
JM Llapasset 2011/09/14.78214.40CR
Maurice Gavin 2011/09/14.815Ccolor
Giancarlo Cortini 2011/09/17.7515.2C
Thorsten Zilch 2011/09/24.81314.54C
JM Llapasset 2011/09/25.78614.60CR
Maurice Gavin 2011/09/25.809C
Felipe Peña 2011/09/26.82115.0C
Giancarlo Cortini 2011/09/27.8C
Mogens Zachariasen 2011/09/28.805Ccolor
Maurice Gavin 2011/09/29.792C
Denis Buczynski 2011/10/05.81116.2CR
Mogens Zachariasen 2011/10/13.746Ccolor
Mogens Zachariasen 2011/10/15.767Ccolor
Giancarlo Cortini 2011/10/15.9015.5C
Mogens Zachariasen 2011/10/22.728Ccolor
Giancarlo Cortini 2011/10/23.7515.6C
Denis Buczynski 2011/10/30.02115.8CR
Mogens Zachariasen 2011/11/01.712Ccolor
Mogens Zachariasen 2011/11/12.689Ccolor
Denis Buczynski 2011/11/15.88816.3CR
Thomas Langhans 2011/12/18.54716.5CR
Denis Buczynski 2011/12/25.08516.5RC
Giancarlo Cortini 2011/12/31.1716.8CR
Paul Mortfield 2012/01/05.583C
Thomas Langhans 2012/01/13.46117.0CR
Giancarlo Cortini 2012/01/15.1917.0CR
Denis Buczynski 2012/01/23.95316.6CR
Stan Howerton 2012/01/28.37617.6C

Light curves and Spectra:

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David Bishop