SN 2021agnf
RA/DEC (2000)
06:31:55.004 +35:33:23.77
97.9791843379 +35.5566019315
Type
SN Ia-91bg-like
Redshift
0.027
Related AstroNotes: 2021-320
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2021-12-23 14:05:16.800
TNS AT
Y
Public
Y
Discovery Mag
17.7
Filter
orange-ATLAS
Reporter/s
J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii), A. Heinze, B. Stalder (LSST), A. Rest (STScI), C. Stubbs (Harvard University), K. W. Smith, S. J. Smartt, D. R. Young, S. Srivastav, M. Fulton, J. Gillanders, T. Moore, C. Richman, L. Cai (Queen's University Belfast), T.-W. Chen (Stockholm), D. E. Wright (University of Minnesota), J. Anderson (ESO)

Spectra

 SN_2021agnf - 2021-12-24 18:57:36 Lijiang-2.4m / YFOSC (None)z=
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   Binning factor: (rounded to nearest integer >1)
Mouse hovers at WL: 0 (rest),0 (observed)
Spectra
SelectIDObs-date (UT)Tel / InstExp-TimeObserver/sReducer/sGroupSpectrum ascii fileSpectrum fits fileSpec. TypeAssoc. GroupsEnd prop. periodRemarks
116132021-12-24 18:57:36Lijiang-2.4m / YFOSCJujia ZhangNone tns_2021agnf_2021-12-24.79_Lijiang-2.4m_YFOSC.datObject
Light Curves
FilterTel / InstObs-date rangePhotometry
orange-ATLASATLAS-HKO_ATLAS-022021-12-16 13:06:14 - 2021-12-23 14:05:172
Photometry
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
2583002021-12-23 14:05:1717.70.12518.69ABMagorange-ATLASATLAS-HKO_ATLAS-0230Robot
2582992021-12-16 13:06:1418.87ABMagorange-ATLASATLAS-HKO_ATLAS-0230Robot[Last non detection]
w-P1PS2_GPC22022-01-10 06:47:31 - 2022-01-10 06:47:311
Photometry
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
2611752022-01-10 06:47:3118.610.0322ABMagw-P1PS2_GPC245Robot
AT Reports
IDTime received (UT)SenderReporter/sReportting groupDisc. Data SourceRADECDiscovery date (UT)Discovery Mag.FilterRelated filesAT TypeInternal nameAssoc. GroupsEnd prop. periodRemarks
1337882022-01-12 11:08:08PS2_Bot1K. C. Chambers, T. de Boer, J. Bulger, J. Fairlamb, M. Huber, C.-C. Lin, T. Lowe, E. Magnier, A. Schultz, R. J. Wainscoat, M. Willman (IfA, University of Hawaii), K. W. Smith, D. R. Young, O. McBrien, J. Gillanders, S. Srivastav, M. Fulton, S. J. Smartt, D. O'Neill, P. Clark, S. Sim (Queen's University Belfast), D. E. Wright (University of Minnesota)Pan-STARRSPan-STARRS06:31:55.004+35:33:23.772022-01-10 06:47:31.20018.61w-P1PSNPS22ebPan-STARRS
1314392021-12-24 00:40:39ATLAS_Bot1J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii), A. Heinze, B. Stalder (LSST), A. Rest (STScI), C. Stubbs (Harvard University), K. W. Smith, S. J. Smartt, D. R. Young, S. Srivastav, M. Fulton, J. Gillanders, T. Moore, C. Richman, L. Cai (Queen's University Belfast), T.-W. Chen (Stockholm), D. E. Wright (University of Minnesota), J. Anderson (ESO)ATLASATLAS06:31:55.014+35:33:23.692021-12-23 14:05:16.80017.7orange-ATLASPSNATLAS21bnlqATLAS
Classification Reports
IDTime received (UT)SenderClassifier/sGroupClassificationRedshiftRelated filesAssoc. GroupsEnd prop. periodRemarksADS Bibcode
115592021-12-25 02:20:27jujiaQian Zhai, Jujia Zhang (YNAO); Xiaofeng Wang (THU)NoneSN Ia-91bg-like0.027The spectrum matches the SNe Ia-91bg-like at a few days before the maximum(e.g., SN 1999by at t =-4d via SNID).2021TNSCR4210....1Z

Comments

Object coordinates updated according to AT-report 133788 of Group Pan-STARRS1
Previous RA, DEC: 06:31:55.014, +35:33:23.69 (97.9792255556, +35.55658)
Updated RA, DEC: 06:31:55.004, +35:33:23.77 (97.9791843379, 35.5566019315)

 Cross-correlation with the library of supernova spectra using the comparison tool SNID (Blondin and Tonry 2007, ApJ, 666, 1024) shows that it matches SN 1991bg at t = +3 days at the given redshift = 0.023 of the host galaxy CGCG 175-003.