Εκρήξεις Supernova και Nova!!

Δημιουργώ αυτό το θέμα για κάθε φορά που έχουμε ένα γεγονός supernova.

Αυτή τη φορά έχουμε ένα νέο supernova το ονόματι 2011by στο γαλαξία NGC 3972. Αναλυτικότερα τα στοιχεία του είναι τα εξής:

Όνομα: SN2011by

Γαλαξίας: NGC 3972

Φαινόμενο μέγεθος (αυτή τη στιγμή): 14,2

RA: 11h 55m

Dec: +55 19'

Αστερισμός: Μεγ. Άρκτος

Το supernova βρίσκεται κοντά στο κέντρο του γαλαξία και συγκεκριμένα 5,9'' Ανατολικά και 19,1'' Βόρεια από το κέντρο του. Η παρακάτω εικόνα είναι από το DSS και είναι πριν την έκρηξη οπότε μπορείτε να την εκτυπώσετε και να κάνετε σύγκριση με το προσοφθάλμιο.

Καλό κυνήγι!!

Με πρόλαβες Δημήτρη, πάνω που πήγα να ανεβάσω όλη την ανακοίνωση απο το AAVSO

Αντε όποιος έχει καθαρό ουρανό ας βγει έξω για παρατήρηση ή φωτογραφιση.

Discovery Magnitude: approximately 14.2 using a Celestron C14

Schmidt-Cassegrain telescope (+ unfiltered CCD camera) at Mt.

Nanshan

 

 

Position: R.A. = 11:55:45.56 Decl. = +55:19:33.8 (equinox 2000.0)

SN 2011at is about 5.3" east and 19.1" north of the center of

NGC 3972.

 

 

Spectra: Spectra obtained on 2011 Apr. 27.5 UT with the 2.16-m

telescope (+ BFOSC) at the Xinglong Station of the NAOCT by T. Zhang

and Z. Zhou, National Astronomical Observatories of China (NAOC),

and X. Wang, Tsinghua Center for Astrophysics, Tsinghua University,

show SN 2011by to be a type-Ia supernova at a very early phase, about

10 days before maximum.

 

 

Charts: Finder charts for SN 2011by (AUID 000-BKB-410) may be plotted

by entering the name or the coordinates above into VSP:

http://www.aavso.org/vsp

 

 

Reporting Observations: Please report all observations to the AAVSO

as SN 2011by.

 

Notes:

a. Initially announced in Central Bureau for Electronic Telegrams

2708 (Daniel W. E. Green, ed.). All information in this Alert Notice

comes from CBET 2708.

 

b. According to Green, the object was designated PSN J11554556+5519338

when posted on the Central Bureau's Transient Objects Confirmation

Page (TOCP) webpage, and was designated SN 2011by based on

spectroscopic reports.

 

c. Nothing was visible down to magnitude 19.5 at this position on

images taken by Zhangwei Jin and Xing Gao on Apr. 8 and 10, or on

a Digitized Sky Survey image from 1991 May 7 down to 19.5 (plate

type or bandpass not reported).

 

d. Discovery image by Zhangwei Jin and Xing Gao posted at the

following website URL: http://www.xjltp.com/XOSS/XM20ZJ/XM20ZJ.htm.

 

e. Unfiltered CCD images obtained remotely by Joseph Brimacombe,

Cairns, Australia, using a 51-cm RCOS telescope (+ STL11K camera) at

the New Mexico Skies Observatory near Mayhill, New Mexico, on Apr.

27.332 UT yield magnitude 14.5 and position end figures

45.57s, 33.9"; image posted at website URL

http://www.flickr.com/photos/43846774@N02/5661036373/.

 

Congratulations to Zhangwei Jin and Xing Gao on their discovery!

 

This AAVSO Alert Notice was compiled by Elizabeth O. Waagen.

---------------------------------------------------

SUBMIT OBSERVATIONS TO THE AAVSO

 

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

http://www.aavso.org/webobs

 

ALERT NOTICE ARCHIVE AND SUBSCRIPTION INFORMATION

 

An Alert Notice archive is available at the following URL:

http://www.aavso.org/alert-notice-archive

 

Subscribing and Unsubscribing may be done at the following URL:

http://www.aavso.org/observation-notification#alertnotices

 

 

 

-------------------------------------------

SUBMIT OBSERVATIONS TO THE AAVSO

 

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

 

http://www.aavso.org/observing/submit/

 

ALERT NOTICE ARCHIVE AND SUBSCRIPTION INFORMATION

 

An Alert Notice archive is available at the following URL:

http://www.aavso.org/publications_files/alerts/

 

Subscribing and Unsubscribing may be done at the following URL:

http://www.aavso.org/publications_files/email/

 

AAVSO Alert Notice 439

 

Correction to Alert Notice 438: SN 2011by

April 28, 2011

 

In AAVSO Alert Notice 438 on Supernova 2011by in NGC 3972 (issued 2011 April 28), the position was attributed to the wrong object. Here is the corrected text:

 

Position: R.A. = 11:55:45.56 Decl. = +55:19:33.8 (equinox 2000.0)

SN 2011by is about 5.3" east and 19.1" north of the center of

NGC 3972.

 

Sincere apologies for the error.

 

 

This Alert Notice was issued by Elizabeth O. Waagen.

 

 

 

 

 

 

-------------------------------------------

SUBMIT OBSERVATIONS TO THE AAVSO

 

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

 

http://www.aavso.org/observing/submit/

 

ALERT NOTICE ARCHIVE AND SUBSCRIPTION INFORMATION

 

An Alert Notice archive is available at the following URL:

http://www.aavso.org/publications_files/alerts/

 

Subscribing and Unsubscribing may be done at the following URL:

http://www.aavso.org/publications_files/email/

 

 

η φωτο του Δημήτρη Invert

Ο ΟΥΡΑΝΟΣ ΚΑΙ ΟΙ ΠΛΑΝΗΤΕΣ ΑΥΤΗΝ ΤΗΝ ΕΒΔΟΜΑΔΑ - ΠΛΑΝΗΤΑΡΙΟ Θεσσαλονίκης

(Επιμέλεια: Αντώνης Παντελίδης)

* Το αστέρι T της Πυξίδας έγινε καινοφανής (nova). H φωτογραφία αυτή των Ernesto Guido & Giovanni Sostero στις15 Απριλίου δείχνει το αστέρι αυτό μία ημέρα μετά την ανακάλυψή του. Δείτε την κινούμενη εικόνα πριν και μετά το nova: http://i176.photobucket.com/albums/w189/walcom77/T_Pyx_animation_April_15_2011.gif. Ο επαναληπτικός αυτός καινοφανής έγινε ορατός την περασμένη εβδομάδα, πρώτη φορά από τον Δεκέμβριο του 1966. Είναι τώρα μεγέθους 7,5 (στις 22 Απριλίου) και είναι πιθανό να φτάσει σε μέγεθος περίπου 6,4 στις 20 Μαΐου. Είναι ορατός αφού πέσει το σκοτάδι από τα μέσα βόρεια γεωγραφικά πλάτη.

Πολύ εύκολο, το είδαμε. Δοκιμάστε το!

Εδω μια φωτογραφία του Γαλαξία Ngc3972 με τον Υπερκαινοφανή που έβγαλα την Παρασκευή 29 Απριλίου.

http://www.astrovox.gr/forum/album_showpage.php?pic_id=12616

Κατάφερε κανείς να δει τον καινοφανή στην Πυξίδα;;

Ο ΣΝ1011by αποτελεσε και το ευνασμα ωστε να σημειωθει προοδος στην ερασιτεχνικη φασματοσκοπια .

Ο Buil "επιασε" φασμα !

Δεν ειναι κι ο,τι ποιο ευκολο να πιασεις φασμα απο 14ου μεγεθους αστερα με ερασιτεχνικα μεσα !

http://astrosurf.com/buil/forum/sn2011by_20110428_881.png

Μάνο, παρατήρησες καμιά πτώση στην φωτεινότητα;;

Καλημέρα !

Τι μέγεθος έχει περίπου ;

Κάποιο supernova ανακαλύφθηκε την 1η Ιονίου στον Σκορπιό !

R.A. = 16 55 09.46,

Dec.= -38 38 04.5

Mέγεθος 9.4 !!

Τι μέγεθος έχει περίπου ;

Παρακάτω είναι μια φωτό από AAVSO το οποίο δείχνει την καμπύλη του. Όπως θα παρατηρήσετε είχε ανέβει περίπου στα 12,8 mag και τώρα είναι περίπου στα ίδια επίπεδα με τις πρώτες παρατηρήσεις.

Όσο για το άλλο που ρωτάς δεν είναι supernova αλλά nova.

Τι μέγεθος έχει περίπου ;

Εδω το δελτίο τύπου του AAVSO για το πιθανό Nova στον Σκορπιό.

AAVSO Special Notice #240

 

Possible nova in Scorpius

June 1, 2011

 

John Seach (Chatsworth Island, NSW, Australia) has identified a transient object on 3 images taken with a digital SLR camera. The coordinates are:

 

RA 16 55 11

Dec -38 38 12

J2000

 

The discovery magnitude on June 1.40UT was 9.5

No object was seen on images taken the previous night, and no minor planet, comet or variable star is known at that position. He also does not see any DSS object at those coordinates.

 

Confirmation of this object is requested. If you do see a new variable object at these coordinates, continue to monitor it; V-band time series would be useful at this early stage.

Arne

 

 

---------------------------------------------------

SUBMIT OBSERVATIONS TO THE AAVSO

 

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

http://www.aavso.org/webobs

 

SPECIAL NOTICE ARCHIVE AND SUBSCRIPTION INFORMATION

 

A Special Notice archive is available at the following URL:

http://www.aavso.org/special-notice-archive/

 

Subscribing and Unsubscribing may be done at the following URL:

http://www.aavso.org/observation-notification#specialnotices

ΥΣ

Ελπίζω να κάνει καλό καιρό αυτές τις μέρες ώστε να δοκιμάσω το Star Analyser στο SN2011by ήρθεεε!!!!

Πολυ ομορφα τα νεα για το star analyzer

Παντου να το δοκιμασεις οχι μονο στο SN2011by !!!

ΠΡΟΧΟΧΗ!!!

SUPERNOVA ΣΤΟ Μ51

RA: 13H 30M

DEC: +47 10'

MAG 13.5

AAVSO Notice:

AAVSO Special Notice #241

 

Supernova in M51

June 3, 2011

 

A new supernova in M51 was discovered by A. Riou and confirmed by several sources, including the Palomar Transient Factory (Silverman et al., ATEL 3398). It is located at

13:30:05.08 +47:10:11.2 J2000

and has a magnitude of about 13.5. Nice images of the supernova can be found at:

http://6888comete.free.fr/fr/imageSN.htm

 

PTF also obtained a spectra from Keck, indicating that this is a type II supernova with a relatively blue continuum with P-Cygni profiles in the Balmer series.

 

This is a unique event, because it occurs in a galaxy that is imaged almost constantly. There must be many photos available that show the rise of this SNe, so the data-mining opportunity is obvious. It is transiting at local twilight and should be observable for northern hemisphere observers for several months.

 

A new APASS sequence should be uploaded soon. We recommend taking nightly monitoring images in B and V for CCD observers, along with visual estimates, until the supernova is no longer visible.

 

Here is an excuse to take the 10 millionth image of M51!

Arne

---------------------------------------------------

SUBMIT OBSERVATIONS TO THE AAVSO

 

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

http://www.aavso.org/webobs

 

SPECIAL NOTICE ARCHIVE AND SUBSCRIPTION INFORMATION

 

A Special Notice archive is available at the following URL:

http://www.aavso.org/special-notice-archive/

 

Subscribing and Unsubscribing may be done at the following URL:

http://www.aavso.org/observation-notification#specialnotices

ΠΡΟΧΟΧΗ!!!

 

SUPERNOVA ΣΤΟ Μ51

 

RA: 13H 30M

DEC: +47 10'

MAG 13.5

Ενδιαφέρον!! θα το έχουμε υπ' όψιν μας!!

Μόλις έλαβα κι εγω το mail

AAVSO Special Notice #241

 

Supernova in M51

June 3, 2011

 

A new supernova in M51 was discovered by A. Riou and confirmed by several sources, including the Palomar Transient Factory (Silverman et al., ATEL 3398). It is located at

13:30:05.08 +47:10:11.2 J2000

and has a magnitude of about 13.5. Nice images of the supernova can be found at:

http://6888comete.free.fr/fr/imageSN.htm

 

PTF also obtained a spectra from Keck, indicating that this is a type II supernova with a relatively blue continuum with P-Cygni profiles in the Balmer series.

 

This is a unique event, because it occurs in a galaxy that is imaged almost constantly. There must be many photos available that show the rise of this SNe, so the data-mining opportunity is obvious. It is transiting at local twilight and should be observable for northern hemisphere observers for several months.

 

A new APASS sequence should be uploaded soon. We recommend taking nightly monitoring images in B and V for CCD observers, along with visual estimates, until the supernova is no longer visible.

 

Here is an excuse to take the 10 millionth image of M51!

Arne

---------------------------------------------------

SUBMIT OBSERVATIONS TO THE AAVSO

 

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

http://www.aavso.org/webobs

 

SPECIAL NOTICE ARCHIVE AND SUBSCRIPTION INFORMATION

 

A Special Notice archive is available at the following URL:

http://www.aavso.org/special-notice-archive/

 

Subscribing and Unsubscribing may be done at the following URL:

http://www.aavso.org/observation-notification#specialnotices

 

 

Μόλις το έλαβα κι εγώ

Φαίνεται καλή περίπτωση S/N

Βαγγέλης

Ακριβώς έτσι Βαγγέλη, είναι πολύ καλή περίπτωση Supernova!!

Ετοιμάστε DSLR, CCD και φίλτρα!! Πάμε για φωτογράφιση, φωτομετρία και φασματοσκοπία!!

Έλα να γεμίζει το Αλμπουμ του Astrovox με Μ51!!

πολυ ωραια Δημήτρη, Thanks!

Εδω ενα δελτίο τύπου απο την AAVSO για το NOVA SCORPII 2011

AAVSO Alert Notice 442

 

NOVA SCORPII 2011 = PNV J16551100-3838120

June 3, 2011

 

Event: NOVA SCORPII 2011 = PNV J16551100-3838120

 

Discovered by: John Seach, Chatsworth Island, NSW, Australia

 

Discovery Date: 2011 June 1.40 UT

 

Discovery Magnitude: magnitude 9.5 on three CCD images (limiting

mag 11.0) taken with a digital SLR camera (+ 50-mm f/1.2 lens

+ orange filter).

 

Coordinates: R.A. = 16:55:11, Decl. = -38:38:12 (equinox 2000.0)

 

Spectra: Three sets of spectra have been reported:

- Obtained by Bernard Heathcote, South Yarra, Victoria, Australia,

through cloud on Jun 2.4896 UT shows H-alpha emission.

- Obtained by A. Arai, T. Kajikawa, and M. Nagashima, Kyoto Sangyo

University, Japan, on 2011 June 2.68 UT using the 1.3-m Araki

telescope (+ LOSA/F2) suggests that the object is a classical nova

in outburst with high interstellar reddening. Spectrum at

http://www.cc.kyoto-su.ac.jp/~kao/blog/index.php/view/98 (via vsnet).

- Obtained by Masayuki Yamanaka and Ryosuke Itoh, Hiroshima

University, Japan, on Jun 2 UT (no time given) with 1.5m Kanata

telescope at Higashi-Hiroshima Observatory. The spectrum exhibits

H-alpha emission; H-beta is not seen because the object is highly

reddened by interstellar material. Spectrum at

http://kanatatmp.g.hatena.ne.jp/kanataobslog/?word=Sco

 

Charts: Finder charts for Nova Sco 2011 (AUID 000-BKC-224) may be

plotted by entering the name or the coordinates above into VSP:

http://www.aavso.org/vsp

 

Reporting Observations: Please report all observations to the AAVSO

as NOVA SCO 2011 or N SCO 2011.

 

Observations reported to the AAVSO International Database:

Jun 1.9930 UT, 10.6, J. Tapioles, San Agustin del Pozo, Spain;

2.33, 10.4 V (preliminary magnitude), Arto Oksanen, Muurame,

Finland, and Caisey Harlingten, Erpingham, Norfolk, England (using

a 50-cm Dall-Kirkham telescope (+ Apogee Alta CCD camera) located

at San Pedro de Atacama, Chile; CBET 2735);

2.4, 9.4 unfiltered CCD, Ernesto Guido, Castellammare di Stabia,

Italy, and Giovanni Sostero, Cavalicco, Italy (using Gras network,

Officer Observatory, Victoria, Australia; via vsnet);

2.4792, 12.58 B ± 0.04 (untransformed; confirming observation), Peter

Nelson, Ellinbank, Victoria, Australia;

2.4792, 10.95 V ± 0.02 (untransformed; confirming observation), Nelson;

2.4792, 09.70 R ± 0.01 (untransformed; confirming observation), Nelson;

2.4792, 08.55 I ± 0.05 (untransformed; confirming observation), Nelson;

2.2489, 10.59 V ±0.01, Shawn Dvorak, Clermont, FL;

2.2512, 12.34 B ±0.01, Dvorak;

2.564 UT, 11.2, Peter Williams, Heathcote, NSW, Australia (via vsnet);

2.975, 11.1, A. Amorim, Florianopolis, Brazil (via CBET 2735);

3.0071, 10.7, Tapioles;

3.0705, 11.2, G. Vargas Beltran, Cochabamba, Bolivia;

3.2441, 10.61 V ±0.01, Dvorak;

3.2463, 12.16 B ±0.02, Dvorak;

 

Notes:

a. Initially reported to the AAVSO by Seach and announced in AAVSO

Special Notice #240 (Arne Henden) and IAU CBET 2735 (Daniel W. E.

Green, ed.).

 

b. Nothing is visible down to 11.0 on Seach's images taken on May 30

UT, or on the ESO Online Digitized Sky Survey (date, bandpass,

limiting magnitude not provided) (CBET 2735).

 

c. Images by Arto Oksanen and Caisey Harlingten on June 2.33 UT yield

position end figures 09.48s, 04.0"(equinox 2000.0). Their V-band

images (San Pedro de Atacama, Chile, location) spanning a little

over an hour show a constant fading of 0.15 mag/hr between June

2.333 and 2.375 (CBET 2735).

 

d. Ernesto Guido and Giovanni Sostero write that Gras network images

from Jun 2.4 UT yield position end figures 09.46s, 04.5" (equinox

2000.0; USNO-B1.0 catalogue reference stars). Their animation

comparing image and a red Digitized Sky Survey plate from 1995 is at

http://bit.ly/jK5mMP.

 

e. Images by Peter Nelson on Jun 2.4792 UT yield position end figures

09.47s, 04.4" (J2000, average residual 0.1arc", using MaxIm and UCAC2

background); his image is available at

http://www.ellinbankobservatory.com.

 

f. According to Green, the object was designated PNV J18102135-2305306

when posted on the Central Bureau's Transient Objects Confirmation

Page (TOCP) webpage, and was designated Nova Sco 2011 based on

spectroscopic reports.

 

Congratulations to John Seach on his discovery!

 

This AAVSO Alert Notice was compiled by Elizabeth O. Waagen.

 

 

 

-------------------------------------------

SUBMIT OBSERVATIONS TO THE AAVSO

 

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

 

http://www.aavso.org/webobs

 

ALERT NOTICE ARCHIVE AND SUBSCRIPTION INFORMATION

 

An Alert Notice archive is available at the following URL:

http://www.aavso.org/alert-notice-archive

 

Subscribing and Unsubscribing may be done at the following URL:

http://www.aavso.org/observation-notification#alertnotices

Αλλο ενα δελτίο τύπου απο την AAVSO για το Supernova στο M51

AAVSO Special Notice #242

 

SN 2011dh = Supernova in M51 = PSN J13303600+4706330

June 3, 2011

 

As an update to AAVSO Special Notice #241

(http://www.aavso.org/aavso-special-notice-241), the supernova

in M51 has been designated SN 2011dh. Discovery, classification,

and observation information have been published in IAU CBET 2736

(Daniel W. E. Green, ed.).

 

Coordinates: 13:30:05.08 +47:10:11.2 (J2000.0)

Coordinates source is Silverman et al., ATEL 3398

 

Observations should be submitted to the AAVSO International Database

using the name SN 2011dh.

 

Thank you and good observing!

 

This AAVSO Special Notice was compiled by Elizabeth O. Waagen.

 

 

---------------------------------------------------

SUBMIT OBSERVATIONS TO THE AAVSO

 

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

http://www.aavso.org/webobs

 

SPECIAL NOTICE ARCHIVE AND SUBSCRIPTION INFORMATION

 

A Special Notice archive is available at the following URL:

http://www.aavso.org/special-notice-archive/

 

Subscribing and Unsubscribing may be done at the following URL:

http://www.aavso.org/observation-notification#specialnotices

Κάτσε Αλέξανδρε, ακόμα στη σελίδα 23 είμαι!

Προς το παρόν με τον &%#^καιρο που έχουμε θα είμαι ευχαριστημένος με μία παρατήρηση από το προσοφθάλμιο!