On the nature and detectability of Type Ib/c supernova progenitors

Home

All issues

Volume 544 (August 2012)

A&A, 544 (2012) L11

Full HTML

Highlight

Free Access

Table 1

Predicted visual magnitudes at the pre-supernova stage for different final masses of helium stars.

Final mass	SN Type^a	Helium envelope	Single/Binary	M_v

M_f ≳ 9 M_⊙	Type Ic	Stripped-off	Single or Binary	M_v = −1.5 ··· −2.5
6 ≲ M_f ≲ 8 M_⊙	Type Ib	Retained	Single or Binary	M_v = −4 ··· −5^b
2 ≲ M_f ≲ 5 M_⊙^c	Type Ib	Retained	Binary or merger remnant	M_v = −2 ··· −4 (M_R = −2.0 ··· −5.5)
2 ≲ M_f ≲ 5 M_⊙^c	Type Ic	Stripped-off	Binary	M_v ≳ 1

Notes.

^(a)

SN Ic is assumed if the helium envelope is stripped off from the progenitor (M_He ≲ 0.5 M_⊙) and SN Ib otherwise. However, this may also depend on the history of chemical mixing during the supernova explosion as shown by Dessart et al. (2012).

^(b)

This estimate is based on the assumption that the helium stars of this mass range still have optically thick WR winds. If not, M_v is larger (M_v ≳ −2).

^(c)

The lower limit of 2 M_⊙ is an arbitrary choice, but SNe Ibc with M < 2 M_⊙ are likely to be very faint and difficult to discover.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.