Optical spectroscopy of Type Ia supernovae by the Carnegie Supernova Projects I and II (2024)

Morrell, N., Phillips, M. M., Folatelli, G., Stritzinger, M. D., Hamuy, M., Suntzeff, N. B., Hsiao, E. Y., Taddia, F., Burns, C. R., Hoeflich, P., Ashall, C., Contreras, C., Galbany, L., Lu, J., Piro, A. L., Anais, J., Baron, E., Burrow, A., Busta, L., ... Palunas, P. (2024). Optical spectroscopy of Type Ia supernovae by the Carnegie Supernova Projects I and II. Astrophysical Journal, 967(1), 1-17. [20]. https://doi.org/10.3847/1538-4357/ad38af

Morrell, N. ; Phillips, M. M. ; Folatelli, G. et al. / Optical spectroscopy of Type Ia supernovae by the Carnegie Supernova Projects I and II. In: Astrophysical Journal. 2024 ; Vol. 967, No. 1. pp. 1-17.

@article{7225ab40c8a24886949e47cd066047c0,

title = "Optical spectroscopy of Type Ia supernovae by the Carnegie Supernova Projects I and II",

abstract = "We present the second and final release of optical spectroscopy of Type Ia supernovae (SNe Ia) obtained during the first and second phases of the Carnegie Supernova Project (CSP-I and CSP-II). The newly released data consist of 148 spectra of 30 SNe Ia observed in the course of CSP-I and 234 spectra of 127 SNe Ia obtained during CSP-II. We also present 216 optical spectra of 46 historical SNe Ia, including 53 spectra of 30 SNe Ia observed by the Cal{\'a}n/Tololo Supernova Survey. We combine these observations with previously published CSP data and publicly available spectra to compile a large sample of measurements of spectroscopic parameters at maximum light, consisting of pseudo-equivalent widths and expansion velocities of selected features for 232 CSP and historical SNe Ia (including more than 1000 spectra). Finally, we review some of the strongest correlations between spectroscopic and photometric properties of SNe Ia. Specifically, we define two samples: one consisting of SNe Ia discovered by targeted searches (most of them CSP-I objects) and the other composed of SNe Ia discovered by untargeted searches, which includes most of the CSP-II objects. The analyzed correlations are similar for both samples. We find a larger incidence of SNe Ia belonging to the cool and broad-line Branch subtypes among the events discovered by targeted searches, shallow-silicon SNe Ia are present with similar frequencies in both samples, while core normal SNe Ia are more frequent in untargeted searches.",

author = "N. Morrell and Phillips, {M. M.} and G. Folatelli and Stritzinger, {M. D.} and M. Hamuy and Suntzeff, {N. B.} and Hsiao, {E. Y.} and F. Taddia and Burns, {C. R.} and P. Hoeflich and C. Ashall and C. Contreras and L. Galbany and J. Lu and Piro, {A. L.} and J. Anais and E. Baron and A. Burrow and L. Busta and A. Campillay and S. Castell{\'o}n and C. Corco and T. Diamond and Freedman, {W. L.} and C. Gonzalez and K. Krisciunas and S. Kumar and Persson, {S. E.} and J. Ser{\'o}n and M. Shahbandeh and S. Torres and Uddin, {S. A.} and Anderson, {J. P.} and C. Baltay and C. Gall and A. Goobar and E. Hadjiyska and S. Holmbo and M. Kasliwal and C. Lidman and Marion, {G. H.} and Mazzali, {P. A.} and P. Nugent and S. Perlmutter and G. Pignata and D. Rabinowitz and M. Roth and Ryder, {S. D.} and Shappee, {B. J.} and J. Vink{\'o} and Wheeler, {J. C.} and {de Jaeger}, T. and P. Lira and Ruiz, {M. T.} and Rich, {J. A.} and Prieto, {J. L.} and {Di Mille}, F. and D. Osip and G. Blanc and P. Palunas",

note = "{\textcopyright} 2024. The Author(s). Published by the American Astronomical Society. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.",

year = "2024",

month = may,

day = "1",

doi = "10.3847/1538-4357/ad38af",

language = "English",

volume = "967",

pages = "1--17",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "IOP Publishing",

number = "1",

}

Optical spectroscopy of Type Ia supernovae by the Carnegie Supernova Projects I and II. / Morrell, N.; Phillips, M. M.; Folatelli, G. et al.
In: Astrophysical Journal, Vol. 967, No. 1, 20, 01.05.2024, p. 1-17.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Optical spectroscopy of Type Ia supernovae by the Carnegie Supernova Projects I and II

AU - Morrell, N.

AU - Phillips, M. M.

AU - Folatelli, G.

AU - Stritzinger, M. D.

AU - Hamuy, M.

AU - Suntzeff, N. B.

AU - Hsiao, E. Y.

AU - Taddia, F.

AU - Burns, C. R.

AU - Hoeflich, P.

AU - Ashall, C.

AU - Contreras, C.

AU - Galbany, L.

AU - Lu, J.

AU - Piro, A. L.

AU - Anais, J.

AU - Baron, E.

AU - Burrow, A.

AU - Busta, L.

AU - Campillay, A.

AU - Castellón, S.

AU - Corco, C.

AU - Diamond, T.

AU - Freedman, W. L.

AU - Gonzalez, C.

AU - Krisciunas, K.

AU - Kumar, S.

AU - Persson, S. E.

AU - Serón, J.

AU - Shahbandeh, M.

AU - Torres, S.

AU - Uddin, S. A.

AU - Anderson, J. P.

AU - Baltay, C.

AU - Gall, C.

AU - Goobar, A.

AU - Hadjiyska, E.

AU - Holmbo, S.

AU - Kasliwal, M.

AU - Lidman, C.

AU - Marion, G. H.

AU - Mazzali, P. A.

AU - Nugent, P.

AU - Perlmutter, S.

AU - Pignata, G.

AU - Rabinowitz, D.

AU - Roth, M.

AU - Ryder, S. D.

AU - Shappee, B. J.

AU - Vinkó, J.

AU - Wheeler, J. C.

AU - de Jaeger, T.

AU - Lira, P.

AU - Ruiz, M. T.

AU - Rich, J. A.

AU - Prieto, J. L.

AU - Di Mille, F.

AU - Osip, D.

AU - Blanc, G.

AU - Palunas, P.

N1 - © 2024. The Author(s). Published by the American Astronomical Society. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

PY - 2024/5/1

Y1 - 2024/5/1

N2 - We present the second and final release of optical spectroscopy of Type Ia supernovae (SNe Ia) obtained during the first and second phases of the Carnegie Supernova Project (CSP-I and CSP-II). The newly released data consist of 148 spectra of 30 SNe Ia observed in the course of CSP-I and 234 spectra of 127 SNe Ia obtained during CSP-II. We also present 216 optical spectra of 46 historical SNe Ia, including 53 spectra of 30 SNe Ia observed by the Calán/Tololo Supernova Survey. We combine these observations with previously published CSP data and publicly available spectra to compile a large sample of measurements of spectroscopic parameters at maximum light, consisting of pseudo-equivalent widths and expansion velocities of selected features for 232 CSP and historical SNe Ia (including more than 1000 spectra). Finally, we review some of the strongest correlations between spectroscopic and photometric properties of SNe Ia. Specifically, we define two samples: one consisting of SNe Ia discovered by targeted searches (most of them CSP-I objects) and the other composed of SNe Ia discovered by untargeted searches, which includes most of the CSP-II objects. The analyzed correlations are similar for both samples. We find a larger incidence of SNe Ia belonging to the cool and broad-line Branch subtypes among the events discovered by targeted searches, shallow-silicon SNe Ia are present with similar frequencies in both samples, while core normal SNe Ia are more frequent in untargeted searches.

AB - We present the second and final release of optical spectroscopy of Type Ia supernovae (SNe Ia) obtained during the first and second phases of the Carnegie Supernova Project (CSP-I and CSP-II). The newly released data consist of 148 spectra of 30 SNe Ia observed in the course of CSP-I and 234 spectra of 127 SNe Ia obtained during CSP-II. We also present 216 optical spectra of 46 historical SNe Ia, including 53 spectra of 30 SNe Ia observed by the Calán/Tololo Supernova Survey. We combine these observations with previously published CSP data and publicly available spectra to compile a large sample of measurements of spectroscopic parameters at maximum light, consisting of pseudo-equivalent widths and expansion velocities of selected features for 232 CSP and historical SNe Ia (including more than 1000 spectra). Finally, we review some of the strongest correlations between spectroscopic and photometric properties of SNe Ia. Specifically, we define two samples: one consisting of SNe Ia discovered by targeted searches (most of them CSP-I objects) and the other composed of SNe Ia discovered by untargeted searches, which includes most of the CSP-II objects. The analyzed correlations are similar for both samples. We find a larger incidence of SNe Ia belonging to the cool and broad-line Branch subtypes among the events discovered by targeted searches, shallow-silicon SNe Ia are present with similar frequencies in both samples, while core normal SNe Ia are more frequent in untargeted searches.

UR - http://www.scopus.com/inward/record.url?scp=85193065926&partnerID=8YFLogxK

U2 - 10.3847/1538-4357/ad38af

DO - 10.3847/1538-4357/ad38af

M3 - Article

AN - SCOPUS:85193065926

SN - 0004-637X

VL - 967

SP - 1

EP - 17

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1

M1 - 20

ER -

Morrell N, Phillips MM, Folatelli G, Stritzinger MD, Hamuy M, Suntzeff NB et al. Optical spectroscopy of Type Ia supernovae by the Carnegie Supernova Projects I and II. Astrophysical Journal. 2024 May 1;967(1):1-17. 20. doi: 10.3847/1538-4357/ad38af