Improved distance determination to M 51 from supernovae 2011dh and 2005cs

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Table 3

Photometry of the proposed progenitor of SN 2011dh with the Hubble Space Telescope.

Filter		m^b		M^d
	(Å)	(mag)	(flux)	(mag)

F336W	3359	23.941(230)	1.26(24)	−5.82(29)
F435W	4318	22.405(039)	7.61(27)	−7.32(19)
F555W	5360	21.780(030)	7.59(21)	−7.92(19)
F658N^e	6584	21.280(064)	5.19(30)	−8.41(20)
F814W	8060	21.230(020)	3.78(07)	−8.43(19)

Notes.

^(a)

Central wavelength in Å;

^(b)

observed standard magnitude and 1σ uncertainty;

^(c)

dereddened flux (assuming E(B − V) = 0.035) and its uncertainty in 10^-18 erg s^-1 cm^-2 Å^-1;

^(d)

dereddened absolute magnitude using D = 8.4 Mpc (μ₀ = 29.62 mag);

^(e)

flight-system magnitudes.

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