Browsing by Author "Brimacombe, J."
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- ItemSupernova 2011bz in NGC 5442 = Psn J14044453-0943160(2011) Howerton, S.; Drake, A. J.; Djorgovski, S. G.; Mahabal, A.; Graham, M. J.; Williams, R.; Prieto, J. L.; Catelan, Marcio; Beshore, E. C.; Larson, S. M.; Christensen, E.; Brimacombe, J.; Marion, G. H.; Calkins, M.Report the Catalina Real-time Transient Survey's discovery of an apparent supernova in public images from the Mount Lemmon Survey. SN 2011 UT R.A. (2000.0) Decl. Mag. Offset 2011bz Apr. 24.34 14 04 43.75 - 9 43 04.7 17.4 19" E, 26" S Note that Drake has revised the position from that used to automatically assign the provisional designation (PSN J14044453-0943160) that was given when this presumed supernova was posted on the Central Bureau's TOCP webpage; it is here designated SN 2011bz based on the spectroscopic report below. Additional unfiltered CCD magnitudes for 2011bz: Mar. 13.44 UT, [19.0 (Catalina Sky Survey; via Drake); Apr. 26.240, 17.5 (J. Brimacombe, Cairns, Australia; remotely using a 51-cm RCOS telescope _ STL11K camera at the New Mexico Skies Observatory near Mayhill, NM, U.S.A.; position end figures 43s.60, 02".7); 26.661, 17.4 (Brimacombe; remotely using a 40-cm RCOS telescope + STL6K camera at the Macedon Ranges Observatory, Melbourne, Australia; position end figures 43s.62, 03".0). Brimacombe's first image is posted at website URL http://www.flickr.com/photos/43846774@N02/5657422949/; his second image is at http://www.flickr.com/photos/43846774@N02/5659643256/. G. H. Marion, Harvard-Smithsonian Center for Astrophysics (CfA), on behalf of the CfA Supernova Group, report that a spectrum (range 340-740 nm) of PSN J14044453-0943160 = SN 2011bz was obtained on Apr. 26 UT by M. Calkins with the F. L. Whipple Observatory 1.5-m telescope (+ FAST). Cross- correlation with a library of supernova spectra using the "Supernova Identification" code (SNID; Blondin and Tonry 2007, Ap.J. 666, 1024) shows that 2011bz is a type-Ia supernova a few days after maximum light. The velocity of the Si II 635.5-nm feature is estimated to be approximately 10700 km/s, using an estimated redshift of z = 0.0291, measured from host- galaxy emission lines....
- ItemSupernova 2011gb = Psn J01334294+3448371(2011) Drake, A. J.; Djorgovski, S. G.; Mahabal, A.; Graham, M. J.; Williams, R.; Prieto, J. L.; Catelan, Marcio; Beshore, E. C.; Larson, S. M.; Christensen, E.; Denisenko, D.; Brimacombe, J.; Valenti, S.; Benetti, S.; Tomasella, L.; Ochner, P.; Pastorello, A.Report the discovery of an apparent supernova in unfiltered Catalina Sky Survey (CSS) images: SN 2011 UT R.A. (2000.0) Decl. Mag. Offset 2011gb Sep. 24.30 1 33 42.94 +34 48 37.1 16.1 4".5 W, 1".1 S The new object was designated PSN J01334294+3448371 when it was posted at the Central Bureau's TOCP webpage and is here designated SN 2011gb based on the spectroscopic report below. Additional CCD magnitudes for 2011gb (unfiltered unless noted otherwise): Jan. 16.23, [18.5 (CSS); Sept. 24.850, 15.9 (D. Denisenko, Moscow, Russia; 0.20-m f/5 reflector + Meade DSI Pro II camera; position end figures 42s.84, 36".8; image posted at the following website URL: http://pics.livejournal.com/bigdenru/pic/000a957p/); 24.897, 15.5 (Paolo Corelli, Pagnacco, Italy; 0.45-m f/4.5 telescope; position end figures 42s.8, 36".8; nearby galaxy centered at position end figures 43s.35, 37".9); 25.187, 16.3 (J. Brimacombe, Cairns, Australia; position end figures 42s.86, 37".0; image posted at URL http://www.flickr.com/photos/43846774@N02/6186780582/); 26.875, 16.3 (Nick James, Chelmsford, Essex, England; Celestron 11 telescope + ST9XE camera; position end figures 42s.84, 36".9; UCAC-3 reference stars). S. Valenti, S. Benetti, L. Tomasella, and P. Ochner, Osservatorio Astronomico di Padova, Istituto Nazionale di Astrofisica; and A. Pastorello, Dipartimento di Astronomia, Universita di Padova, on behalf of a larger collaboration, report that a spectrogram of PSN J01334294+3448371 = SN 2011gb, obtained on Sept. 25.06 UT, suggests that it is a type-Ia supernova observed a few weeks after B-band maximum at a redshift z = 0.014....
- ItemSupernova 2011gl in Pgc 16578 = Psn J05014307-1523247(2011) Howerton, S.; McNaught, R. H.; Garradd, G.; Drake, A. J.; Djorgovski, S. G.; Mahabal, A.; Graham, M. J.; Williams, R.; Prieto, J. L.; Catelan, Marcio; Beshore, E. C.; Larson, S. M.; Christensen, E.; Brimacombe, J.; Marion, G. H.Report the discovery of an apparent supernova in public unfiltered-CCD images from the Siding Spring Survey (SSS): SN 2011 UT R.A. (2000.0) Decl. Mag. Offset 2011gl Sep. 23.71 5 01 43.07 -15 23 24.7 18.2 42".9 E, 29".7 N The variable was designated PSN J05014307-1523247 when it was posted on the Central Bureau's TOCP webpage and is here designated SN 2011gl based on the spectroscopic confirmation reported below. Additional unfiltered CCD magnitudes for 2011gl: Mar. 26.45 UT, [19.3 (SSS); Sept. 25.483, 17.7 (J. Brimacombe, Cairns, Australia; position end figures 43s.07, 25".3; image posted at website URL http://www.flickr.com/photos/43846774@N02/6183792395/. G. H. Marion, Harvard-Smithsonian Center for Astrophysics (CfA), on behalf of the CfA Supernova Group, reports that a spectrum (range 340-740 nm) of PSN J05014307-1523247 = 2011gl was obtained on Sept. 29 UT by Marion with the F. L. Whipple Observatory 1.5-m telescope (+ FAST). Cross-correlation with a library of supernova spectra using the "Supernova Identification" code (SNID; Blondin and Tonry 2007, Ap.J. 666, 1024) shows that 2011gl is a type-Ia supernova about two weeks after maximum light. The best-fit SNID template is to SN 2005am at +16 days and z = 0.043....
- ItemSupernova 2011gr = PSN J00204598+0656052(2011) Drake, A. J.; Djorgovski, S. G.; Mahabal, A.; Graham, M. J.; Williams, R.; Prieto, J. L.; Catelan, Marcio; Beshore, E. C.; Larson, S. M.; Christensen, E.; Brimacombe, J.; Luppi, F.
- ItemSupernova 2011hd in PGC 28823 = PSN J09584830+3447033.(2011) Drake, A. J.; Djorgovski, S. G.; Mahabal, A.; Graham, M. J.; Williams, R.; Prieto, J. L.; Catelan, Marcio; Beshore, E. C.; Larson, S. M.; Christensen, E.; Brimacombe, J.; Koff, R. A.; Luppi, F.Report the discovery of an apparent supernova in unfiltered Catalina Sky Survey (CSS) images: SN 2011 UT R.A. (2000.0) Decl. Mag. Offset 2011hd Oct. 24.51 9 58 48.30 +34 47 03.3 15.9 6".8 E, 7".9 S The variable was designated PSN J09584830+3447033 when it was posted on the Central Bureau's TOCP webpage and is here designated SN 2011hd based on the spectroscopic confirmation reported below. Additional CCD magnitudes (unfiltered unless otherwise noted) for 2011hd: Apr. 29.26 UT, [20.5 (CSS); Oct. 25.463, 15.9 (J. Brimacombe, Cairns, Australia; position end figures 48s.33, 03".7); 28.425, 16.2 (R. A. Koff, Bennett, CO, USA, Meade 0.25-m f/10 reflector + Apogee AP-47p camera; position end figures 48s.31, 03".2; image scale 2"/pixel; limiting magnitude 19.0); 30.112, R = 16.0 (Federica Luppi, Varese, Italy, 0.36-m f/7.9 reflector + Bessell R filter; position end figures 48s.34, 03".5; reference stars from CMC-14 catalogue; image posted at URL http://www.astrogeo.va.it/pub/TOCP/PSN_09584830+3447033.jpg). Brimacombe's image is posted at URL http://www.flickr.com/photos/43846774@N02/6281645148/. G. H. Marion, Harvard-Smithsonian Center for Astrophysics (CfA), on behalf of the CfA Supernova Group, reports that a spectrum (range 340-740 nm) of PSN J09584830+3447033 = 2011hd was obtained on Oct. 28 UT by P. Berlind with the F. L. Whipple Observatory 1.5-m telescope (+ FAST). Cross-correlation with a library of supernova spectra using the "Supernova Identification" code (SNID; Blondin and Tonry 2007, Ap.J. 666, 1024) shows that 2011hd is a type-Ia supernova more than two weeks after maximum light. A good fit is found to the template of the normal type-Ia supernova 2003du at +18 days and z = 0.015. L. Tomasella, A. Pastorello, S. Valenti, and S. Benetti, Istituto Nazionale di Astrofisica (INAF), Osservatorio Astronomico di Padova, on behalf of a larger collaboration, report that a spectrogram of 2011hd, obtained on Oct. 30.12 UT with the Ekar-Copernico 1.82-m telescope (+ AFOSC; range 360-810 nm; resolution 2.2 nm), is that of a type-Ia supernova. Comparison of the observed spectrum with a library of supernova spectra, using the "GELATO" code (Harutyunyan et al. 2008, A.Ap. 488, 383), suggests a normal type-Ia supernova 2-3 weeks after its B-band maximum brightness. The expansion velocity derived from the Si II 635.5-nm minimum is about 10000 km/s.
- ItemSupernova 2011id = Psn J02574049-5102281(2011) McNaught, R. H.; Garradd, G.; Drake, A. J.; Djorgovski, S. G.; Graham, M. J.; Mahabal, A.; Williams, R.; Prieto, J. L.; Catelan, Marcio; Beshore, E. C.; Larson, S. M.; Christensen, E.; Brimacombe, J.; Sanders, N.; Milisavljevic, D.; Soderberg, A.Report the discovery of an apparent supernova in unfiltered Siding Spring Survey (SSS) images: SN 2011 UT R.A. (2000.0) Decl. Mag. Offset 2011id Nov. 1.59 2 57 40.49 -51 02 28.1 18.2 6".9 E, 4".9 S The variable was designated PSN J02574049-5102281 when it was posted at the Central Bureau's TOCP webpage and is here designated SN 2011id based on the spectroscopic confirmation reported below. Additional CCD magnitudes for 2011id: Aug. 28.77 UT, [19.2 (SSS); Nov. 2.635, 18.0 (J. Brimacombe, Cairns, Australia; infrared filter, bandpass > 700 nm; position end figures 40s.51, 27".8; image posted at http://www.flickr.com/photos/43846774@N02/6306763959/). N. Sanders, D. Milisavljevic, and A. Soderberg, Harvard University, report that low-dispersion spectra (range 400-930 nm), obtained on Nov. 18.3 UT with the Magellan-Baade telescope (+ IMACS), show PSN J02574049-5102281 = SN 2011id to be a type-Ia supernova. Cross-correlation with a library of supernova spectra using the "Supernova Identification" code (SNID; Blondin and Tonry 2007, Ap.J. 666, 1024) shows matches with normal type-Ia events between +20 and +40 days....
- ItemSupernova 2011ig = Psn J01055465-1220486(2011) Drake, A. J.; Djorgovski, S. G.; Graham, M. J.; Mahabal, A.; Williams, R.; Prieto, J. L.; Catelan, Marcio; Beshore, E. C.; Larson, S. M.; Christensen, E.; Brimacombe, J.; Valenti, S.; Pastorello, A.; Benetti, S.; Tomasella, L.; Bufano, F.; Ochner, P.Report the discovery of an apparent supernova in unfiltered Catalina Sky Survey (CSS) images: SN 2011 UT R.A. (2000.0) Decl. Mag. Offset 2011ig Nov. 17.21 1 05 54.65 -12 20 48.6 16.9 0".7 W, 3".7 S The variable was designated PSN J01055465-1220486 when it was posted at the Central Bureau's TOCP webpage and is here designated SN 2011ig based on the spectroscopic confirmation reported below. Additional CCD magnitudes for 2011ig: Oct. 30.28 UT, [17.5 (CSS); Nov. 20.316, 17.5 (J. Brimacombe, Cairns, Australia; luminance filter; position end figures 54s.65, 50".2; image posted at website URL http://www.flickr.com/photos/43846774@N02/6375756043/). S. Valenti, A. Pastorello, S. Benetti, L. Tomasella, F. Bufano, and P. Ochner, Istituto Nazionale di Astrofisica, Osservatorio Astronomico di Padova, on behalf of a larger collaboration, report that a spectrogram of PSN J01055465-1220486 = SN 2011ig, obtained on Nov. 20.89 UT with the 1.82-m Copernico Telescope (+ AFOSC; range 340-790 nm, resolution 2.2 nm), suggests that it is a 1991T-like type-Ia supernova. Cross-correlation with a library of supernova spectra via the "Supernova Identification" code (SNID; Blondin and Tonry 2007, Ap.J. 666, 1024) indicates that 2011ig is similar to SN 1999aa (Garavini et al. 2004, A.J. 128, 387) around maximum light. Assuming a redshift of z = 0.065, the ejecta velocity deduced from the minimum of the Si II 635-nm line is about 13500 km/s....
- ItemSupernova 2011jm in NGC 4809 = Tcp J12545110+0239149(2011) Howerton, S.; Drake, A. J.; Djorgovski, S. G.; Mahabal, A.; Graham, M. J.; Williams, R.; Prieto, J. L.; Catelan, Marcio; McNaught, R. H.; Garradd, G.; Beshore, E. C.; Larson, S. M.; Christensen, E.; Brimacombe, J.; Luppi, F.; Buzzi, L.; Baroni, S.; Concari, P.; Foglia, S.; Galli, G.; Tombelli, M.; Foley, R. J.; Fong, W.Report the discovery of an apparent supernova in public images from the Catalina Sky Survey (CSS). SN 2011 UT R.A. (2000.0) Decl. Mag. Offset 2011jm Dec. 24.49 12 54 51.10 + 2 39 14.9 14.8 0".6 E, 0".2 N The variable was designated TCP J12545110+0239149 when it was posted at the Central Bureau's TOCP webpage and is here designated SN 2011jm based on the spectroscopic confirmation reported below. Additional CCD magnitudes for 2011jm (unfiltered unless noted otherwise: June 24.18 UT, [19.0 (CSS); Dec. 27.489, 15.4 (J. Brimacombe, Cairns, Australia; remotely using a 51-cm RCOS telescope + STL11K camera + luminance filter at the New Mexico Skies Observatory near Mayhill, NM, U.S.A.; position end figures 51s.14, 15".1); 12.168, 15.6 (F. Luppi and L. Buzzi, Varese, Italy; 0.38-m f/6.8 reflector; position end figures 51s.11, 15".2; reference stars from CMC-14 catalogue; image posted at website URL http://www.astrogeo.va.it/pub/TOCP/TCP_N4809.jpg); 28.403, 15.5 (S. Baroni, L. Buzzi, P. Concari, S. Foglia, G. Galli, and M. Tombelli; remotely using a 0.18-m f/2.8 reflector at the Tzec Maun Observatory near Mayhill, NM, U.S.A.). Brimacombe's image is posted at the following website URL: http://www.flickr.com/photos/43846774@N02/6585388995/. R. J. Foley and W. Fong, Harvard-Smithsonian Center for Astrophysics, report that they have obtained a spectrogram (range 400-1000 nm) of TCP J12545110+0239149 = SN 2011jm on Dec. 27.3 UT with the Magellan Baade telescope (+ IMACS). The spectrum shows that 2011jm appears to be a type-Ic supernova 2-4 months after maximum light, but it is not fully nebular....
- ItemSupernova 2011kh in NGC 7189 = Psn J22031514+0034253(2014) Howerton, S.; Drake, A. J.; Djorgovski, S. G.; Mahabal, A.; Graham, M. J.; Williams, R.; Prieto, J. L.; Catelan, Marcio; McNaught, R. H.; Garradd, G.; Beshore, E. C.; Larson, S. M.; Christensen, E.; Brimacombe, J.; Luppi, F.; Bros, X.Reported the Catalina Real-time Transient Survey discovery of an apparent supernova in public images from the Catalina Sky Survey (CSS): SN 2011 UT R.A. (2000.0) Decl. Mag. Offset 2011kh June 7.42 22 03 15.14 + 0 34 25.3 18.5 12".8 W, 9".1 N The variable was designated PSN J22031514+0034253 when it was posted at the Central Bureau's TOCP webpage and is here designated SN 2011kh based on the spectroscopic confirmation of this as a type-II supernova on June 24 by Gal-Yam et al. (cf. website URL http://www.astronomerstelegram.org/?read=3464; they also observed 2011kh at mag 18.1 on June 13.46 UT, deriving position end figures 15s.00, 24".9). Additional CCD magnitudes for 2011kh: 2011 May 13.45, [19.7 (CSS); June 8.441, 17.7 (J. Brimacombe, Cairns, Australia; image taken remotely with a telescope at the New Mexico Skies observatory near Mayhill, NM, USA; position end figures 15s.03, 25".5; image posted at website URL http://www.flickr.com/photos/43846774@N02/5811979806/); 8.788, R = 17.5 (Brimacombe; image at http://www.flickr.com/photos/43846774@N02/5812980601/); 26.033, R = 18.1 (F. Luppi, Varese, Italy; 0.36-m f/7.9 reflector + Bessell R filter; position end figures 15s.04, 25".3; something is faintly visible at this position on Digitized Sky Survey images from 1990 Aug. 16 and 19 around red mag 19 and position end figures 15s.03 +/- 0s.02 and 25".2 +/- 0".3; image posted at URL http://www.astrogeo.va.it/pub/TOCP/PSN_N7189.jpg); 26.083, 17.8 (X. Bros, Ager, Catalonia, Spain; 35-cm telescope; position end figures 15s.09, 25".1; image posted at http://anysllum.com/SNNGC7189.jpg)....
- ItemSupernova 2011ki in UGC 10246 = Psn J16103055+2730005(2014) Howerton, S.; Drake, A. J.; Djorgovski, S. G.; Mahabal, A.; Graham, M. J.; Williams, R.; Prieto, J. L.; Catelan, Marcio; McNaught, R. H.; Garradd, G.; Beshore, E. C.; Larson, S. M.; Christensen, E.; Brimacombe, J.Reported the Catalina Real-time Transient Survey discovery of an apparent supernova in public images from the Catalina Sky Survey (CSS): SN 2011 UT R.A. (2000.0) Decl. Mag. Offset 2011ki June 1.34 16 10 30.55 +27 30 00.5 19.0 6".9 W, 3".0 N The variable was designated PSN J16103055+2730005 when it was posted at the Central Bureau's TOCP webpage and is here designated SN 2011ki based on the spectroscopic confirmation of this as a type-II supernova on June 3 by Gal-Yam et al. (cf. website URL http://www.astronomerstelegram.org/?read=3403; they also observed 2011ki at mag 19.9 on June 3.38 UT, deriving position end figures 30s.46, 29'59".2). Further CCD magnitudes for 2011ki: 2011 May 20.41, [20.2 (CSS); June 3.357, 18.6 (J. Brimacombe, Cairns, Australia; remotely using a 51-cm RCOS telescope + STL11K camera at the New Mexico Skies observatory near Mayhill, NM, USA; position end figures 30s.48, 30"01".3; image posted at URL http://www.flickr.com/photos/43846774@N02/5807504812/)....
- ItemSupernova 2012ce = Psn J11134946-2955320(2012) McNaught, R. H.; Drake, A. J.; Djorgovski, S. G.; Graham, M. J.; Mahabal, A.; Williams, R.; Prieto, J. L.; Catelan, Marcio; Beshore, E. C.; Larson, S. M.; Christensen, E.; Brimacombe, J.; Marion, G. H.; Irwin, J.Report the discovery of an apparent supernova in unfiltered Siding Spring Survey (SSS) images: SN 2012 UT R.A. (2000.0) Decl. Mag. Offset 2012ce May 14.49 11 13 49.46 -29 55 32.0 16.6 7".0 E, 2".2 S The variable was designated PSN J11134946-2955320 when it was posted at the Central Bureau's TOCP webpage and is here designated SN 2012ce based on the spectroscopic confirmation reported below. Further CCD magnitudes for 2012ce: Mar. 31.63 UT, [18.8 (SSS); May 15.398, 18.5 (J. Brimacombe, Cairns, Australia; infrared filter; position end figures 49s.51, 32".9; image posted at website URL http://www.flickr.com/photos/43846774@N02/7207002078/). G. H. Marion, Harvard-Smithsonian Center for Astrophysics (CfA), on behalf of the CfA Supernova Group, reports that a spectrum (range 340-740 nm) of PSN J11134946-2955320 = 2012ce was obtained on May 15 UT by J. Irwin with the F. L. Whipple Observatory 1.5-m telescope (+ FAST). Cross-correlation with a library of supernova spectra using the "Supernova Identification" code (SNID; Blondin and Tonry 2007, Ap.J. 666, 1024) shows that 2012ce is a type-Ia supernova about one week after maximum light. A good fit is found to the template of the normal type-Ia supernova 1995D at +6 days.
- ItemThe ASAS-SN bright supernova catalogue - I. 2013-2014(OXFORD UNIV PRESS, 2017) Holoien, T. W. S.; Stanek, K. Z.; Kochanek, C. S.; Shappee, B. J.; Prieto, J. L.; Brimacombe, J.; Bersier, D.; Bishop, D. W.; Dong, Subo; Brown, J. S.; Danilet, A. B.; Simonian, G. V.; Basu, U.; Beacom, J. F.; Falco, E.; Pojmanski, G.; Skowron, D. M.; Wozniak, P. R.; Avila, C. G.; Conseil, E.; Contreras, C.; Cruz, I.; Fernandez, J. M.; Koff, R. A.; Guo, Zhen; Herczeg, G. J.; Hissong, J.; Hsiao, E. Y.; Jose, J.; Kiyota, S.; Long, Feng; Monard, L. A. G.; Nicholls, B.; Nicolas, J.; Wiethoff, W. S.We present basic statistics for all supernovae discovered by the All-Sky Automated Survey for SuperNovae (ASAS-SN) during its first year-and-a-half of operations, spanning 2013 and 2014. We also present the same information for all other bright (mV <= 17), spectroscopically confirmed supernovae discovered from 2014 May 1 through the end of 2014, providing a comparison to the ASAS-SN sample starting from the point where ASAS-SN became operational in both hemispheres. In addition, we present collected redshifts and near-UV through IR magnitudes, where available, for all host galaxies of the bright supernovae in both samples. This work represents a comprehensive catalogue of bright supernovae and their hosts from multiple professional and amateur sources, allowing for population studies that were not previously possible because the all-sky emphasis of ASAS-SN redresses many previously existing biases. In particular, ASAS-SN systematically finds bright supernovae closer to the centres of host galaxies than either other professional surveys or amateurs, a remarkable result given ASAS-SN's poorer angular resolution. This is the first of a series of yearly papers on bright supernovae and their hosts that will be released by the ASAS-SN team.
- ItemThe extraplanar type II supernova ASASSN-14jb in the nearby edge-on galaxy ESO 467-G051(2019) Meza, N.; Prieto, J.L.; Clocchiatti, Alejandro; Galbany, L.; Anderson, J.P.; Falco, E.; Kochanek, C.S.; Kuncarayakti, H.; Sanchez, S.F.; Brimacombe, J.; Holoien, T.W.S.; Shappee, B.J.; Stanek, K.Z.; Thompson, T.A.