期刊
ASTRONOMY & ASTROPHYSICS
卷 649, 期 -, 页码 -出版社
EDP SCIENCES S A
DOI: 10.1051/0004-6361/202039240
关键词
galaxies: star formation; supernovae: general; galaxies: individual: NGC 3256; galaxies: individual: Arp 299; dust; extinction
资金
- Turku Collegium of Science, Medicine and Technology
- Science and Technology Facilities Council (STFC) [ST/P000312/1]
- G.R.E.A.T. research environment
- Wenner-Gren Foundations
- Royal Society - Science Foundation Ireland University Research Fellowship
- PRIN-INAF 2017
- Academy of Finland [324504, 328898]
- EU [842471]
- European Union [839090]
- European Funds for Regional Development (FEDER) [PGC2018-095317-B-C21]
- Polish NCN MAESTRO grant [2014/14/A/ST9/00121]
- CONICYT PFCHA/DOCTORADOBECAS CHILE/2017 [72180113]
- Royal Astronomical Society Research Fellowship
- Instrument Center for Danish Astrophysics (IDA)
- UK Science and Technology Facilities Council
- DOE (USA)
- NSF (USA)
- MISE (Spain)
- STFC (UK)
- HEFCE (UK)
- NCSA (UIUC)
- KICP (U. Chicago)
- CCAPP (Ohio State)
- MIFPA (Texas AM University)
- CNPQ (Brazil)
- FAPERJ (Brazil)
- FINEP (Brazil)
- MINECO (Spain)
- DFG (Germany)
- Argonne Lab
- UC Santa Cruz
- University of Cambridge
- CIEMATMadrid
- University of Chicago
- University College London
- DES-Brazil Consortium
- University of Edinburgh
- ETH Zurich
- Fermilab
- University of Illinois
- ICE (IEEC-CSIC)
- IFAE Barcelona
- Lawrence Berkeley Lab
- LMU Munchen
- University of Michigan
- NOAO
- University of Nottingham
- Ohio State University
- OzDES Membership Consortium
- University of Pennsylvania
- University of Portsmouth
- SLAC National Lab
- Stanford University
- University of Sussex
- Texas AM University
- National Science Foundation [AST-1440341, AST-1238877]
- Weizmann Institute for Science
- Oskar Klein Center at Stockholm University
- University of Maryland
- University of Washington
- Deutsches Elektronen-Synchrotron and Humboldt University
- Los Alamos National Laboratories
- TANGO Consortium of Taiwan
- University of Wisconsin at Milwaukee
- Lawrence Berkeley National Laboratories
- National Aeronautics and Space Administration through the Planetary Science Division of the NASA Science Mission Directorate [NNX08AR22G]
- Association of Universities for Research in Astronomy, Inc., under NASA [NAS5-26555]
- project Towards the SKA and CTA era: discovery, localization, and physics of transient objects
- EU H2020 ERC [758638]
- ESO programmes [67.D-0438, 60.A-9475, 199.D-0143, 1103.D-0328]
- Caltech
- IPAC
- NASA
- National Aeronautics and Space Administration
- Southern African Large Telescope (SALT) [2018-1DDT-003]
- [MNiSW DIR/WK/2016/07]
- [GS-2017A-C-1]
- Marie Curie Actions (MSCA) [842471] Funding Source: Marie Curie Actions (MSCA)
The paper discusses the discovery and follow-up observations of two core-collapse supernovae in the luminous infrared galaxy NGC 3256, as well as additional supernovae in related systems. It suggests that different types of CCSNe may have different underlying progenitor age distributions, with H-poor progenitors generally being younger.
The fraction of core-collapse supernovae (CCSNe) occurring in the central regions of galaxies is not well constrained at present. This is partly because large-scale transient surveys operate at optical wavelengths, making it challenging to detect transient sources that occur in regions susceptible to high extinction factors. Here we present the discovery and follow-up observations of two CCSNe that occurred in the luminous infrared galaxy (LIRG) NGC 3256. The first, SN 2018ec, was discovered using the ESO HAWK-I /GRAAL adaptive optics seeing enhancer, and was classified as a Type Ic with a host galaxy extinction of AV = 2:1+0:3 0:1 mag. The second, AT 2018cux, was discovered during the course of follow-up observations of SN 2018ec, and is consistent with a subluminous Type IIP classification with an AV = 2:1 +/- 0:4 mag of host extinction. A third CCSN, PSN J10275082 4354034 in NGC 3256, was previously reported in 2014, and we recovered the source in late-time archival Hubble Space Telescope imaging. Based on template light curve fitting, we favour a Type IIn classification for it with modest host galaxy extinction of AV = 0:3+0:4 0:3 mag. We also extend our study with follow-up data of the recent Type IIb SN 2019lqo and Type Ib SN 2020fkb that occurred in the LIRG system Arp 299 with host extinctions of AV = 2:1 +0:1 0 :3 and AV = 0:4 +0:1 0 :2 mag, respectively. Motivated by the above, we inspected, for the first time, a sample of 29 CCSNe located within a projected distance of 2.5 kpc from the host galaxy nuclei in a sample of 16 LIRGs. We find, if star formation within these galaxies is modelled assuming a global starburst episode and normal IMF, that there is evidence of a correlation between the starburst age and the CCSN subtype. We infer that the two subgroups of 14 H-poor (Type IIb /Ib /Ic /Ibn) and 15 H-rich (Type II /IIn) CCSNe have di fferent underlying progenitor age distributions, with the H-poor progenitors being younger at 3 sigma significance. However, we note that the currently available sample sizes of CCSNe and host LIRGs are small, and the statistical comparisons between subgroups do not take into account possible systematic or model errors related to the estimated starburst ages.
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