Not so-dark: High resolution H I imaging of J0139+4328 and identification of an optical counterpart

Open Access

Table 1.

Properties of J0139+4328.

Property	Value

H I
Centroid	01:39:29.7 +43:28:30
$V_{sys}^{hel, op}$ $Mathematical equation: $ V_{\mathrm{sys}}^{\mathrm{hel,op}} $$	(2483.5 ± 0.5) km s⁻¹
D	(31.03 ± 5.6) Mpc
f_c	150 pc arcsec⁻¹
S_H I	(259 ± 26) mJy km s⁻¹
M_HI	(5.9 ± 2.2)×10⁷ M_⊙
W₅₀	(28.5 ± 1.2) km s⁻¹
W₂₀	(43.4 ± 1.9) km s⁻¹
PA_kin	∼150°

Optical

Centroid	01:39:29.5 +43:28:30
i	(56 ± 7)°
PA_op	(128 ± 2)°
m_g	$20 . 55_{- 0.26}^{+ 0.35}$ $Mathematical equation: $ 20.55_{-0.26}^{+0.35} $$
m_r	$20 . 32_{- 0.18}^{+ 0.21}$ $Mathematical equation: $ 20.32_{-0.18}^{+0.21} $$
m_i	$20 . 31_{- 0.27}^{+ 0.38}$ $Mathematical equation: $ 20.31_{-0.27}^{+0.38} $$
M_*	$3 . 2_{- 2.0}^{+ 6.4} \times 10^{6} M_{⊙}$ $Mathematical equation: $ 3.2_{-2.0}^{+6.4} \times 10^6\,M_\odot $$

Notes. Systemic velocity ( $V_{sys}^{hel, op}$ $Mathematical equation: $ V_{\mathrm{sys}}^{\mathrm{hel,op}} $$ ) is given in heliocentric rest frame using optical convention. All H I properties are reported in the rest frame of the source. f_c is the conversion factor from arcsec to pc. PA_kin is defined as the angle of the receding side measured counterclockwise from the north.

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