Affiliation
Association Francaise des Observateurs d'Etoiles Variables (AFOEV)
Wed, 09/07/2016 - 21:07
"ASAS-SN Discovery of A Likely Galactic Nova ASASSN-16kd" (ATel #9469)
Object: ASASSN-16kd
RA (J2000): 17:22:51.426
DEC (J2000): -31:58:36.28
Gal l: 354.78°
Gal b: 2.463°
Disc. UT Date: 2016-09-07.00
Disc. V mag: 11.4
RA 17:42:57.68, DEC -33:25:42.9 (J2000.0)
"bright transient near the Galactic center (l/b=355.869/-1.87), on the rise, V=13.3 on and before 2016-08-26.0, V=13.1 on 2016-08-31.09, V=12.8 on 2016-09-02.99, V=12.3 on 2016-09-07.00"
I'd love to do a follow-up observation tonight if possible; perhaps even show this to my students. However, aavso charts might not be available for a day or so. Should I go to VizieR or some other data base to get comp stars in the mean time?
As long as there are no AAVSO charts for these objects I suggest to use comparison star magnitudes from the AAVSO Photometric All-Sky Survey (APASS):
https://www.aavso.org/download-apass-data
Thanks Patrick! I'll take a look.
Chris Maloney
AAVSO charts are now available.
This probable nova was posted on 2016 Sept. 8.22 UT (8.5 hours after Kris Stanek's announcement in ATel #9469) as PNV J17225112-3158349 on TOCP:
http://www.cbat.eps.harvard.edu/unconf/followups/J17225112-3158349.html
"2016 09 06.4808
Shigehisa Fujikawa, Kan'onji, Kagawa, Japan, reported his discovery of this PNV to NAOJ. He discovered it at 11:32 UT on 2016 Sept 6 and reported it to NAOJ at 13:34 UT on 2016 Sept 6. He used a 120-mm F3.5 lens for this discovery. This PNV seems to be the same as ASASSN-16kd which was later announced in ATel #9469 at 20:40 UT on Sept 7: http://www.astronomerstelegram.org/?read=9469"
Confirmation by Seiichiro Kiyota:
"2016 09 08.0623
I took confirmation images of this PN with 0.61-m f/6.5 CDK astrograph + FLI PL09000 CCD at iTelescope, Sierra Remote Observatory, Auberry, CA. USA, remotely. Photometric results were V=11.79 and Ic=9.33. Seiichiro Kiyota (Kamagaya, Japan)"
Regards,
Patrick
I have taken a spectrum of ASASSN-16kd and can confirm that it is an early nova with broad Ha emission with an expansion velocity of about 1300km/s. There are features of a Fe nova also present.
I also took BVRI images but have not processed them yet.
Terry
"Confirmation of ASASSN-16kd as a classical nova in the optically thick stage"
ATel #9479; J. L. Prieto (UDP/MAS), L. Chomiuk, J. Strader (MSU), N. Morrell (LCO), K. Z. Stanek (OSU), B. J. Shappee (Carnegie Observatories)
http://www.astronomerstelegram.org/?read=9477
"Spectroscopic classification of ASASSN-16kb and ASASSN-16kd as highly reddened Galactic novae"
ATel #9479; J. L. Prieto (UDP/MAS), L. Chomiuk, J. Strader (MSU), N. Morrell (LCO), K. Z. Stanek (OSU), B. J. Shappee (Carnegie Observatories)
http://www.astronomerstelegram.org/?read=9479
AAVSO Alert Notice 550 reports on Nova Sco 2016 No. 2 = PNV J17225112-3158349 = ASASSN-16kd. Please see the notice for information, AAVSO observations, and observing instructions.
Many thanks and good observing,
Elizabeth Waagen, AAVSO HQ
"Liverpool Telescope Spectrum of Nova Sco 2016 No. 2 (ASASSN-16kd)"
ATel #9482; S. C. Williams (Lancaster), M. J. Darnley (LJMU) on 10 Sep 2016; 10:48 UT
http://www.astronomerstelegram.org/?read=9482
AAVSO Special Notice #424 requests multicolor observations of V1656 Sco (ASASSN-16kd = Nova Sco 2016 No. 2), which has apparently entered the dust-making phase, from now until it is lost behind the Sun. Please see the Special Notice for details and observing instructions.
Good observing,
Elizabeth Waagen, AAVSO HQ