Bright nova in Centaurus
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Bright nova in Centaurus
ATEL #10387 ATEL
#10387
Title: ASAS-SN Discovery of A Likely Galactic Nova ASASSN-17gk on
the Rise
Author: K. Z. Stanek, C. S. Kochanek (OSU), L. Chomiuk, J. Strader
(MSU), J. S. Brown, T. W.-S. Holoien, J. V. Shields, T. A.
Thompson
(OSU), B. J. Shappee (Hubble Fellow, Carnegie
Observatories), J. L.
Prieto (Diego Portales; MAS), D. Bersier (LJMU), Subo Dong,
S. Bose,
Ping Chen (KIAA-PKU), J. Brimacombe (Coral Towers
Observatory)
Queries: stanek.32@osu.edu
Posted: 18 May 2017; 00:49 UT
Subjects:Optical, Nova
During the ongoing All Sky Automated Survey for SuperNovae (ASAS-SN or
"Assassin"), using data from the quadruple 14-cm "Cassius" telescope in
CTIO, Chile, we detect a very bright, new transient source, most likely a
classical nova, near the Galactic plane
Object RA (J2000) DEC (J2000) Gal l (deg) Gal b (deg)
Disc. UT Date Disc. V mag
ASASSN-17gk 13:20:55.32 -63:42:18.5 306.187 -1.02
2017-05-17.28 10.9
ASASSN-17gk was discovered in images obtained on 2017-05-17.28 at V~10.9,
but it has been present in ASAS-SN data since 2017-04-25.08 (V~13.3), with
significant shorter-timescale variability (V~11.6 on
2017-04-28.11 and V~12.05 on 2017-05-04.19). We do not detect (V>17.4)
this object in subtracted images taken on UT 2017-04-23.16 and before. No
previous outbursts are detected at this location since ASAS-SN started
observing it in February 2016.
Follow-up observations, especially multi-band photometry and spectroscopy,
are strongly encouraged.
We thank Las Cumbres Observatory and its staff for their continued support
of ASAS-SN. ASAS-SN is funded in part by the Gordon and Betty Moore
Foundation through grant GBMF5490 to the Ohio State University, NSF grant
AST-1515927, the Mt. Cuba Astronomical Foundation, the Center for Cosmology
and AstroParticle Physics (CCAPP) at OSU, and the
Chinese Academy of Sciences South America Center for Astronomy (CASSACA).
************************************************************************************************
Spectra are welcome!
François
#10387
Title: ASAS-SN Discovery of A Likely Galactic Nova ASASSN-17gk on
the Rise
Author: K. Z. Stanek, C. S. Kochanek (OSU), L. Chomiuk, J. Strader
(MSU), J. S. Brown, T. W.-S. Holoien, J. V. Shields, T. A.
Thompson
(OSU), B. J. Shappee (Hubble Fellow, Carnegie
Observatories), J. L.
Prieto (Diego Portales; MAS), D. Bersier (LJMU), Subo Dong,
S. Bose,
Ping Chen (KIAA-PKU), J. Brimacombe (Coral Towers
Observatory)
Queries: stanek.32@osu.edu
Posted: 18 May 2017; 00:49 UT
Subjects:Optical, Nova
During the ongoing All Sky Automated Survey for SuperNovae (ASAS-SN or
"Assassin"), using data from the quadruple 14-cm "Cassius" telescope in
CTIO, Chile, we detect a very bright, new transient source, most likely a
classical nova, near the Galactic plane
Object RA (J2000) DEC (J2000) Gal l (deg) Gal b (deg)
Disc. UT Date Disc. V mag
ASASSN-17gk 13:20:55.32 -63:42:18.5 306.187 -1.02
2017-05-17.28 10.9
ASASSN-17gk was discovered in images obtained on 2017-05-17.28 at V~10.9,
but it has been present in ASAS-SN data since 2017-04-25.08 (V~13.3), with
significant shorter-timescale variability (V~11.6 on
2017-04-28.11 and V~12.05 on 2017-05-04.19). We do not detect (V>17.4)
this object in subtracted images taken on UT 2017-04-23.16 and before. No
previous outbursts are detected at this location since ASAS-SN started
observing it in February 2016.
Follow-up observations, especially multi-band photometry and spectroscopy,
are strongly encouraged.
We thank Las Cumbres Observatory and its staff for their continued support
of ASAS-SN. ASAS-SN is funded in part by the Gordon and Betty Moore
Foundation through grant GBMF5490 to the Ohio State University, NSF grant
AST-1515927, the Mt. Cuba Astronomical Foundation, the Center for Cosmology
and AstroParticle Physics (CCAPP) at OSU, and the
Chinese Academy of Sciences South America Center for Astronomy (CASSACA).
************************************************************************************************
Spectra are welcome!
François
François Teyssier
http://www.astronomie-amateur.fr
http://www.astronomie-amateur.fr
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Re: Bright nova in Centaurus
Confirmed (instrument response corrected version coming later). The next week's forecast for me is rain, hopefully others can follow up in the coming days.
Paul
Paul
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Re: Bright nova in Centaurus
Paul,
Well done!
Great result.....
We're still under cloud over here.
Ken
Well done!
Great result.....
We're still under cloud over here.
Ken
"Astronomical Spectroscopy - The Final Frontier" - to boldly go where few amateurs have gone before....
"Imaging Sunlight - Using a digital Spectroheliograph" - Springer
http://www.astronomicalspectroscopy.com
"Imaging Sunlight - Using a digital Spectroheliograph" - Springer
http://www.astronomicalspectroscopy.com
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Re: Bright nova in Centaurus
Here's the instrument and atmosphere corrected profile.
Paul
Paul
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Re: Bright nova in Centaurus
That's excellent, Paul!
Typical spectrum of a classical nova near maximum
Congratulations,
François
Typical spectrum of a classical nova near maximum
Congratulations,
François
François Teyssier
http://www.astronomie-amateur.fr
http://www.astronomie-amateur.fr
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Re: Bright nova in Centaurus
François Teyssier
http://www.astronomie-amateur.fr
http://www.astronomie-amateur.fr
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Re: Bright nova in Centaurus
congratulation Paul !
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Re: Bright nova in Centaurus
Emissions brightening steadily over the past 5 nights (click to enlarge).
Paul
Paul
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Re: Bright nova in Centaurus
Great spectra Paul, you are very lucky to have a nova in south hemisphere (the last one very bright in the north was Nova del 2013) !!!!
LHIRES III #5, LISA, e-Shel, C14, RC400 Astrosib, AP1600
http://o.garde.free.fr/astro/Spectro1/Bienvenue.html
http://o.garde.free.fr/astro/Spectro1/Bienvenue.html
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Re: Bright nova in Centaurus
Thanks Olivier and Etienne,
The challenge with this nova is the stormy weather (it's winter in Australia). I've had to open the hatch of my observatory a little bit to take some spectra when the clouds clear, and then be prepared to close up quickly before the next shower. It keeps me on my toes.
Paul
The challenge with this nova is the stormy weather (it's winter in Australia). I've had to open the hatch of my observatory a little bit to take some spectra when the clouds clear, and then be prepared to close up quickly before the next shower. It keeps me on my toes.
Paul