GSH 91.5+2–114: A large H i shell in the outer part of the Galaxy

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Table 5

Flux densities and spectral indices of compact sources⁺(S_ν ∝ ν^− α).

#	Object	F₁₄₂₀(mJy)	σ₁₄₂₀(mJy)	F₄₀₈(mJy)	σ₄₀₈(mJy)	α	Δ α	Notes^a

1	S ₂	37	2	76	9	0.58	0.10	This paper, see text
2	G91.56+0.97	191	19	159	27	−0.15	0.16	This paper, see text
3		261	11	346	28	0.09	0.06	vdWH, HvdW^b
4		238	9.5	79.2	1.1	−0.88	0.03	Kerton et al. (2007)

5	S ₁	25	2	59	4	0.69	0.08	This paper, see text
6	G92.24+1.57	132	10	104	15	−0.19	0.13	This paper, see text
7		99.4	6.9	168	31	0.42	0.16	Kerton et al. (2007)^c
8		146	22	–	–	–	–	vdWH

Notes.

⁽⁺⁾

Sources S₁ and S₂ are the nearby point sources seen in the insets of Fig. 3.

^(a)

HvdW = Higgs & van der Werf (1991), vdWH = van der Werf & Higgs (1990);

^(b)

flux density at 408 MHz includes contribution from source S₂ (29P62 at 1420 MHz – HvdW). Note that the spectral index listed there comes from a linear fit using measurements at five frequencies between 408 MHz and 4.85 GHz;

^(c)

likely includes source S₁ at 408 MHz.

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