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==Supernovae==
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==Supernovae==
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Three [[supernova]]e have been observed in NGC 3506:
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Three [[supernova]]e have been observed in NGC 3506:
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* ”’SN 2003L”’ ([[Type Ib and Ic supernovae|Type Ic]], mag. 16.9) was discovered by Tom Boles and LOTOSS ([[Lick Observatory]] and [[Tenagra_Observatories|Tenagra Observatory]] Supernova Searches) on 12 January 2003.<ref>{{cite journal |last1=Kushida |first1=R. |last2=Nakano |first2=S. |last3=Puckett |first3=T. |last4=Newton |first4=J. |last5=Langoussis |first5=A. |last6=Boles |first6=T. |last7=Schwartz |first7=M. |last8=Swift |first8=B. |last9=Li |first9=W. |last10=Kobayashi |first10=T. |last11=Koshida |first11=Y. |title=Supernovae 2003J, 2003K, 2003L, 2003M |journal=International Astronomical Union Circular |date=2003 |issue=8048 |page=1 |bibcode=2003IAUC.8048….1K | url= http://www.cbat.eps.harvard.edu/iauc/08000/08048.html#Item1}}</ref><ref>{{cite web | website=Transient Name Server | title=SN{{nbsp}}2003L | url=https://www.wis-tns.org/object/2003L | publisher = [[International Astronomical Union|IAU]] | access-date=4 August 2025}}</ref> Its spectrum featured a relatively blue continuum, dominated by strong P-Cyg lines of Ca II (H and K) and Fe II and a relatively weaker Si II 635.5-nm line was also visible.<ref>{{cite journal |last1=Valenti |first1=S. |last2=Cappellaro |first2=E. |last3=Danese |first3=S. |last4=Di Pede |first4=G. |last5=Navasardyan |first5=H. |last6=Pastorello |first6=A. |last7=Benetti |first7=S. |last8=Turatto |first8=M. |title=Supernovae 2003L, 2003M, and 2003O |journal=International Astronomical Union Circular |date=2003 |issue=8057 |page=2 |bibcode=2003IAUC.8057….2V | url = http://www.cbat.eps.harvard.edu/iauc/08000/08057.html#Item2}}</ref>
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* ”’SN 2003L”’ ([[Type Ib and Ic supernovae|Type Ic]], mag. 16.9) was discovered by Tom Boles and LOTOSS ([[Lick Observatory]] and [[Tenagra_Observatories|Tenagra Observatory]] Supernova Searches) on 12 January 2003.<ref>{{cite journal |last1=Kushida |first1=R. |last2=Nakano |first2=S. |last3=Puckett |first3=T. |last4=Newton |first4=J. |last5=Langoussis |first5=A. |last6=Boles |first6=T. |last7=Schwartz |first7=M. |last8=Swift |first8=B. |last9=Li |first9=W. |last10=Kobayashi |first10=T. |last11=Koshida |first11=Y. |title=Supernovae 2003J, 2003K, 2003L, 2003M |journal=International Astronomical Union Circular |date=2003 |issue=8048 |page=1 |bibcode=2003IAUC.8048….1K | url= http://www.cbat.eps.harvard.edu/iauc/08000/08048.html#Item1}}</ref><ref>{{cite web | website=Transient Name Server | title=SN{{nbsp}}2003L | url=https://www.wis-tns.org/object/2003L | publisher = [[International Astronomical Union|IAU]] | access-date=4 August 2025}}</ref> Its spectrum featured a relatively blue continuum, dominated by strong P-Cyg lines of Ca II (H and K) and Fe II and a relatively weaker Si II 635.5-nm line was also visible.<ref>{{cite journal |last1=Valenti |first1=S. |last2=Cappellaro |first2=E. |last3=Danese |first3=S. |last4=Di Pede |first4=G. |last5=Navasardyan |first5=H. |last6=Pastorello |first6=A. |last7=Benetti |first7=S. |last8=Turatto |first8=M. |title=Supernovae 2003L, 2003M, and 2003O |journal=International Astronomical Union Circular |date=2003 |issue=8057 |page=2 |bibcode=2003IAUC.8057….2V | url = http://www.cbat.eps.harvard.edu/iauc/08000/08057.html#Item2}}</ref>
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* ”’SN 2017dfq”’ ([[type Ia supernova|Type Ia]], mag. 16.5) was discovered by [[All Sky Automated Survey for SuperNovae|ASAS-SN]] on 20 April 2017.<ref>{{cite web | website=Transient Name Server | title=SN{{nbsp}}2017dfq | url=https://www.wis-tns.org/object/2017dfq | publisher = [[International Astronomical Union|IAU]] | access-date=4 August 2025}}</ref>
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* ”’SN 2017dfq”’ ([[type Ia supernova|Type Ia]], mag. 16.5) was discovered by [[All Sky Automated Survey for SuperNovae|ASAS-SN]] on 20 April 2017.<ref>{{cite web | website=Transient Name Server | title=SN{{nbsp}}2017dfq | url=https://www.wis-tns.org/object/2017dfq | publisher = [[International Astronomical Union|IAU]] | access-date=4 August 2025}}</ref>
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* ”’SN 2021adgz”’ ([[Type II supernova|Type II]], mag. 19.408) was discovered by ”Automatic Learning for the Rapid Classification of Events” (ALeRCE) on 4 November 2021.<ref>{{cite web | website=Transient Name Server | title=SN{{nbsp}}2021adgz | url=https://www.wis-tns.org/object/2021adgz | publisher = [[International Astronomical Union|IAU]] | access-date=4 August 2025}}</ref>
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* ”’SN 2021adgz”’ ([[Type II supernova|Type II]], mag. 19.408) was discovered by ”Automatic Learning for the Rapid Classification of Events” (ALeRCE) on 4 November 2021.<ref>{{cite web | website=Transient Name Server | title=SN{{nbsp}}2021adgz | url=https://www.wis-tns.org/object/2021adgz | publisher = [[International Astronomical Union|IAU]] | access-date=4 August 2025}}</ref>
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