An 80 au cavity in the disk around HD 34282 | Astronomy & Astrophysics (A&A)

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Volume 607 (November 2017)

A&A, 607 (2017) A55

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Table 3

Line fluxes, spectral resolution and spatial extent for the CO J = 3−2 and HCO⁺J = 4−3 lines.

Line	Line flux	Error^a	Channel width	rms^b	Major axis^c	r _in ^d
	(Jy km s^-1)	(Jy km s^-1)	(m s^-1)	(mJy/beam)	′′	(au)

CO J = 3−2	21.2	0.3	200	9.4	6.2	23
HCO⁺J = 4−3	2.2	0.2	200	10.4	2.6	85

Notes.Line fluxes have been calculated from the Briggs-weighted images by integrating the emission around the systemic velocity at −2.35 km s^-1 assuming a half line width of 3.5 km s^-1 for the HCO⁺J = 4−3 line and 6.75 km s^-1 for the CO J = 3−2 line.

^(a)

Estimated from the rms of the integrated spectrum outside the line boundaries, does not include calibration uncertainties.

^(b)

1σ rms per channel.

^(c)

Major axis is determined for all emission above 3 times the rms per channel.

^(d)

Calculated from the maximum velocity for which emission >3σ is present in the channel maps, assuming the gas is in Keplerian rotation in a disk inclined with 59.3° around a 1.59 M_⊙ star.

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