HOPS 394

Number of components: 2

Lbol (L)

Tbol (K)

Class

Distance (pc)

Zone

5.7

45.5

0

392.8

OMC 2

ALMA 0.87 mm

Source

RA

(J2000)

DEC

(J2000)

Integrated Flux Density

(mJy)

Peak Intensity

(mJy/beam)

RMS

(mJy/beam)

ΔΦA

(")

Decon. Size

(")

Decon. PA

(º)

HOPS-394-A

05:35:24.046

-05:07:52.11

21.52 ± 1.38

7.073

0.3

2.2

0.25 x 0.13

80.7

HOPS-394-B

05:35:24.867

-05:07:54.64

9.88 ± 0.32

7.99

1.05

11.4

-

-

VLA 9 mm

Source

RA

(J2000)

DEC

(J2000)

Integrated Flux Density

(mJy)

Peak Intensity

(mJy/beam)

RMS

(µJy/beam)

ΔΦV

(")

Decon. Size

(")

Decon. PA

(º)

HOPS-394-A

05:35:24.044

-05:07:52.1

0.239 ± 0.02

0.14

7.42

2.3

0.12 x 0.04

25

HOPS-394-B

05:35:24.867

-05:07:54.64

0.062  ± 0.01

0.05

8.01

14.1

-

-

ACA 0.87 mm

Source

RA

(J2000)

DEC

(J2000)

Integrated Flux Density

(mJy)

Peak Intensity

(mJy/beam)

Mean RMS

(mJy/beam)

ΔΦV

(")

Decon. Size

(")

Decon. PA

(º)

HOPS-394

05:35:23.928

-05:07:53.4

562.19

197.2

2.99

-

-

-

 

ALMA and VLA Derived Parameters

Source

R2σ, ALMA

(au)

R2σ, VLA

(au)

MD, ALMA

(M)

MD, VLA

(M)

QALMA

QVLA

Spectral Index

(0.87 – 9 mm)

Spectral Index

(8.1 -10 mm)

HOPS-394-A

83.4 ± 10.0

40.7 ± 10.0

13.7 ± 0.9

211.6 ± 18.6

22.81

1.82

1.9 ± 0.08

-1.1 ± 0.72

HOPS-394-B

 -

-

6.3 ± 0.7

54.9 ± 6.7

-

-

2.2 ± 0.08

1.6 ± 1.01

 


Sources next/close to me: HOPS-71-B.

Same source, other names: FIR 1a, VLA 8, Source 9 (Díaz-Rodríguez et al).


 

Source Images

Left: ALMA (0.87 mm), Right: VLA (9 mm) (Tobin et al. 2020).

Figure 1: HOPS-394-A.

 

Figure 2: HOPS-394-B.

 

Figure 3: At west HOPS-71 and north east HOPS-394-B

 

ACA (0.87 mm) (Federman et al. 2022).

Figure 4: HOPS-394.

 

Source 9

 

RA(J2000) DEC(J2000)

Decon. Size

(" x ")

Decon PA

(º)

Flux Density 2014

(mJy)

Flux Density 2015

(mJy)

Spectral Index

Nature

Evolved Stage

Other Names
5 cm 3 cm 1.3 cm 0.7 cm 5 cm
05:35:24.0458 ± 0.0009 -05:07:52.074 ± 0.014 0.35 x 0.20 16 ± 17 0.27 ± 0.03 0.23 ± 0.03 - - 0.193 ± 0.023 0.0 ± 0.6  Class 0? VLA 8, HOPS 394?

 

VLA  (5 cm, black contours) (Díaz-Rodriguez to be submitted).

Figure 5: Source 9. Superposition of the VLA A-configuration map with natural weighting at 5cm (black contours, Díaz-Rodriguez to be submitted) over ALMA emission at 870 micron (red contours, Tobin et al 2020).

 

Scattered dust emission as observed by the HST (Habel et al. 2021 ApJ, 911, 153).

Figure 6.