J/ApJ/928/103ivo://CDS.VizieR/J/ApJ/928/103doi:10.26093/cds/vizier.19280103CDSHoogendam W.B.Ashall C.Galbany L.Shappee B.J.Burns C.R.Lu J.,Phillips M.M.Baron E.Holmbo S.Hsiao E.Y.Morrell N.,Stritzinger M.D.Suntzeff N.B.Taddia F.Young D.R.Lyman J.D.,Benetti S.Mazzali P.A.Delgado Mancheno M.Diaz R.G.Torres S.M.2024-11-06T20:24:09Z2024-03-15T13:46:53ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frsupernovaeinfrared-photometryvisible-astronomybroad-band-photometryspectroscopyinfrared-astronomyWe present optical and near-infrared photometric and spectroscopic observations of the fast-declining Type Ia supernova (SN) 2015bo. SN2015bo is underluminous (M_B_=-17.50+/-0.15 mag) and has a fast-evolving light curve ({Delta}m15(B)=1.91+/-0.01mag and s_BV_=0.48+/-0.01). It has a unique morphology in the observed V-r color curve, where it is bluer than all other supernovae (SNe) in the comparison sample. A ^56^Ni mass of 0.17+/-0.03M_{sun}_ was derived from the peak bolometric luminosity, which is consistent with its location on the luminosity-width relation. Spectroscopically, SN2015bo is a cool SN in the Branch classification scheme. The velocity evolution measured from spectral features is consistent with 1991bg-like SNe. SN 2015bo has a SN twin (similar spectra) and sibling (same host galaxy), SN 1997cn. Distance moduli of {mu}=34.33+/-0.01(stat)+/-0.11(sys)mag and {mu}=34.34+/-0.04(stat)+/-0.12(sys)mag are derived for SN 2015bo and SN 1997cn, respectively. These distances are consistent at the 0.06{sigma} level with each other, and they are also consistent with distances derived using surface-brightness fluctuations and redshift-corrected cosmology. This suggests that fast-declining SNe could be accurate distance indicators, which should not be excluded from future cosmological analyses.2022ApJ...928..103Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/928/103CatalogResearchIsServedByTAP VizieR generic servicerelated-toII/282 : The SDSS Photometric Catalog, Release 6 (Adelman-McCarthy+, 2007)J/A+AS/126/15 : Kinematical data on early-type galaxies. II. (Simien+ 1997)J/AJ/131/527 : UBVRI light curves of 44 type Ia supernovae (Jha+, 2006)J/MNRAS/377/1531 : Optical & IR photometry of SN 2004eo (Pastorello+, 2007)J/ApJ/686/749 : Improved cosmological constraints from SNe (Kowalski+, 2008)J/ApJ/696/870 : Catalina Real-time Transient Survey (CRTS) (Drake+, 2009)J/ApJ/722/566 : Host galaxies of SNIa in SDSS-II SN survey (Lampeitl+, 2010)J/MNRAS/406/782 : Type Ia supernovae luminosities (Sullivan+, 2010)J/MNRAS/412/1441 : SNe luminosity functions (Li+, 2011)J/AJ/143/126 : Spectroscopy of nearby Type Ia supernovae (Blondin+, 2012)J/MNRAS/425/1789 : Berkeley supernova Ia program. I. (Silverman+, 2012)J/ApJ/773/53 : Type Ia SNe spectroscopy by the CSP (Folatelli+, 2013)J/A+A/568/A22 : Joint analysis of the SDSS-II & SNLS SNe Ia (Betoule+, 2014)J/ApJ/788/48 : X-ray through NIR photometry of NGC 2617 (Shappee+, 2014)J/MNRAS/448/2766 : Strong lines in the opt/NIR for SN 2002bo (Blondin+, 2015)J/ApJ/815/58 : Spectrophot. time series obs. of twin SNIa (Fakhouri+, 2015)J/A+A/578/A9 : Optical and NIR spectra of SN iPTF13ebh (Hsiao+, 2015)J/A+A/579/A40 : PESSTO catalog (Smartt+, 2015)J/ApJS/218/10 : HET Massive Galaxy Survey (HETMGS) (van den Bosch+, 2015)J/ApJ/826/56 : HST/WFC3 obs. of Cepheids in SN Ia host gal. (Riess+, 2016)J/AJ/154/211 : CSP (DR3): photometry of low-z SNe Ia (Krisciunas+, 2017)J/ApJ/869/56 : Updated calibration of the CSP-I SNIa sample (Burns+, 2018)J/A+A/611/A58 : SN 2007on and SN 2011iv light curves (Gall+, 2018)J/ApJ/859/101 : The supernovae Ia Pantheon sample (Scolnic+, 2018)J/A+A/630/A76 : SN2016hnk photometry and spectroscopy (Galbany+, 2019)J/ApJ/895/118 : Opt. & NIR photometry of 2 Ia type supernovae (Burns+, 2020)J/ApJ/900/140 : CSP-II: sp. of the 03fg-like SNIa LSQ14fmg (Hsiao+, 2020)J/AJ/159/167 : AMUSING++ nearby galaxy compilation. I. (Lopez-Coba+, 2020)J/ApJ/914/57 : Follow-up Opt. & NIR obs. of SN2015bp (Wyatt+, 2021)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/928/103https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/928/103http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/928/103https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/928/103https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/928/103http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/928/103GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticalInfrareddefaultJ/ApJ/928/103/tableb1Log of optical photometric datarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMJD[57069.4/57182.1] Modified Julian Day of the observationdtime.epochfloatumag[18/19.8]? Apparent u band AB magnitudemagphot.mag;em.opt.Ufloatnullablee_umag[0.02/0.2]? Uncertainty in umagmagstat.error;phot.mag;em.opt.UfloatnullableBmag[16.8/20.7]? Apparent B band Vega magnitudemagphot.mag;em.opt.Bfloatnullablee_Bmag[0.01/0.1]? Uncertainty in Bmagmagstat.error;phot.mag;em.opt.BfloatnullableVmag[16.4/20.4]? Apparent V band Vega magnitudemagphot.mag;em.opt.Vfloatnullablee_Vmag[0.01/0.1]? Uncertainty in Vmagmagstat.error;phot.mag;em.opt.Vfloatnullablegmag[16.6/20.7]? Apparent g band AB magnitudemagphot.mag;em.opt.Bfloatnullablee_gmag[0.01/0.1]? Uncertainty in gmagmagstat.error;phot.mag;em.opt.Bfloatnullablermag[16.2/21]? Apparent r band AB magnitudemagphot.mag;em.opt.Rfloatnullablee_rmag[0.01/0.07]? Uncertainty in rmagmagstat.error;phot.mag;em.opt.Rfloatnullableimag[16.6/20.2]? Apparent i band AB magnitudemagphot.mag;em.opt.Ifloatnullablee_imag[0.01/0.07]? Uncertainty in imagmagstat.error;phot.mag;em.opt.IfloatnullableJ/ApJ/928/103/table3Log of spectroscopic observationsFlagsp: indicates spectrum data in fig11.dat; column added by CDSmeta.code.errorcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDateDate of observation (UT)time.epochnullableMJD[57068.3/57108.7] Modified Julian Datedtime.epochdoublePhase[-7.8/31.8] Epoch phase relative to rest-frame B-band maximum (JD2457078.3+/-0.1d)dtime.phase;arith.ratiofloatTelTelescope (1)meta.id;instr.telcharInstSpectrographmeta.id;instrcharJ/ApJ/928/103/fig11Time series of optical spectra for SN 2015borecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMJD[57068.3/57108.7] Modified Julian Datedtime.epochdoubleindexedlambda[3340.3/24790.8] Wavelength; Angstroms0.1nmem.wldoubleFlux[-0.5/1.5] Flux; erg/s/cm^2^/{AA}cW.m**-2.nm**-1phot.fluxdoublee_Flux[2e-18/4.7e-17]? Uncertainty in FluxcW.m**-2.nm**-1stat.error;phot.fluxdoublenullable