J/A+A/632/A101 Extremely high-velocity jets in Serpens (Tychoniec+, 2019)
Chemical and kinematic structure of extremely high-velocity molecular jets in
the Serpens Main star-forming region.
Tychoniec L., Hull C.L.H., Kristensen L.E., Tobin J.J., Le Gouellec V.J.M.,
van Dishoeck E.F.
<Astron. Astrophys. 632, A101 (2019)>
=2019A&A...632A.101T 2019A&A...632A.101T (SIMBAD/NED BibCode)
ADC_Keywords: YSOs ; Protostars ; Carbon monoxide ; Interstellar medium
Keywords: astrochemistry - ISM: jets and outflows -
techniques: interferometric - stars: protostars - submilimeter: ISM -
line: profiles
Abstract:
ALMA observations of four molecular transitions, CO 2-1, SiO 5-4,
H2CO 303-202 in Band 6 (ALMA project 2013.1.00726.S; PI: C.
Hull) and HCN 1-0 observed in Band 3 (ALMA project 2016.1.00710.S; PI:
C. Hull) are presented. The synthesized beam of the observations is
between 0.3 and 0.6 arcsec, corresponding to 130-260au at the distance
to Serpens Main. The largest recoverable scale in the data is 5 arcsec
and 12 arcsec (2150 and 4960au) for Band 3 and Band 6, respectively.
The spectral resolution of the observations differs between the
spectral windows, ranging from 0.04 to 0.3km/s. For both bands, only
12-m array data were used. The Band 6 data were obtained in two
configurations (C43-1 and C43-4 with resolutions of 1.1 and 0.3
arcsec, respectively, and the final images are produced from the
combined datasets.
Description:
Files: tab_c2.dat tab_c3.dat tab_c4.dat tab_c5.dat tab_c6.dat The
catalog presents column densities of four molecules targeted in the
observations. The column densities are measured separately for a
blueshifted and redshifted component and for three velocity regimes
separately: slow, fast and EHV. Methods are detailed in the paper. For
each molecule we calculate column density for minimum and maximum
expected Tex as listed Table 4 in the paper. We assume that values
have 20% uncertainty arising from calibration, arbitrary defining
velocity regimes and other factors.
Files: tab_c7.dat tab_c8.dat tab_c9.dat tab_c10.dat tab_c11.dat The
outflow properties: mass, mass-loss, momentum and outflow force for
the targeted protostars based on CO observations. The properties are
measured separately for a blueshifted and redshifted component and for
three velocity regimes separately: slow, fast and EHV. Methods are
detailed in the paper. The properties are not corrected for
inclination (see main text). Their absolute values are therefore
uncertain by factors of a few.
The data cubes contain observations of two targeted positions, one
centered on SMM1 system and the other targeting both S68N (Ser-emb 8)
and Ser-emb 8(N) protostars. Additional to the four molecules
presented in a paper (CO, SiO, C18O, H2CO) the C18O data cube is
attached, as this molecule is used to account for any envelope
contamination. Continuum files for both Band 3 and Band 6 are also
present.
Objects:
-------------------------------------------------------------
RA (2000) DE Designation(s)
-------------------------------------------------------------
18 29 48.73 +01 16 55.5 Ser-emb 8(N) = [WM2000] S68Nb
18 29 48.09 +01 16 43.3 S68N = SH 2-68 N
18 29 49.81 +01 15 20.5 SMM1-a = NAME Serpens SMM 1a
18 29 49.67 +01 15 21.1 SMM1-b = NAME Serpens SMM 1b
18 29 49.99 +01 15 23.0 SMM1-d = NAME Serpens SMM 1d
-------------------------------------------------------------
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
tab_c2.dat 81 6 Column densities for Ser-emb 8(N)
tab_c3.dat 81 6 Column densities for S68N
tab_c4.dat 81 6 Column densities for SMM1-a
tab_c5.dat 81 6 Column densities for SMM1-b
tab_c6.dat 81 6 Column densities for SMM1-d
tab_c7.dat 46 6 Outflow properties for Ser-emb 8(N)
tab_c8.dat 46 6 Outflow properties for S68N
tab_c9.dat 46 6 Outflow properties for SMM1-a
tab_c10.dat 46 6 Outflow properties for SMM1-b
tab_c11.dat 46 6 Outflow properties for SMM1-d
list.dat 171 14 List of FITS data cubes
fits/* . 14 Individual FITS data cubes
--------------------------------------------------------------------------------
See also:
J/ApJ/847/92 : Polarization data toward the protostar Serpens SMM1 (Hull+ 2017)
Byte-by-byte Description of file: tab_c[23456].dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 9 A9 --- Name Side of the outflow and velocity component
12 A1 --- l_NCOT Flag for upper or lower limit for CO
14- 18 E5.1 cm-2 NCOTmin Column density of CO for min Tex
23- 27 E5.1 cm-2 NCOTmax Column density of CO for max Tex
30 A1 --- l_NSiO Flag for upper or lower limit for SiO
32- 36 E5.1 cm-2 NSiOTmin Column density of SiO for min Tex
41- 45 E5.1 cm-2 NSiOTmax Column density of SiO for max Tex
48 A1 --- l_NH2CO Flag for upper or lower limit fo H2CO
50- 54 E5.1 cm-2 NH2COTmin Column density of H2CO for min Tex
59- 63 E5.1 cm-2 NH2COTmax Column density of H2CO for max Tex
66 A1 --- l_NHCN Flag for upper or lower limit fo HCN
68- 72 E5.1 cm-2 NHCNTmin Column density of HCN for min Tex
77- 81 E5.1 cm-2 NHCNTmax Column density of HCN for max Tex
--------------------------------------------------------------------------------
Byte-by-byte Description of file: tab_c[789].dat tab_c1?.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 9 A9 --- Name Side of the outflow and velocity component
12- 18 E7.2 Msun M Total mass of the outflowing gas
22- 28 E7.2 Msun/yr dM/dt Total mass loss rate of the gas
31- 37 E7.2 Msun.km/s P Momentum of the outflow
40- 46 E7.2 Msun/yr.km/s Fout Outflow force of the material
--------------------------------------------------------------------------------
Byte-by-byte Description of file: list.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 9 F9.5 deg RAdeg Right Ascension of center (J2000)
10- 18 F9.5 deg DEdeg Declination of center (J2000)
20- 23 F4.2 arcsec/pix scale Scale of the image
25- 28 I4 --- Nx Number of pixels along X-axis
30- 33 I4 --- Ny Number of pixels along Y-axis
35- 37 I3 --- Nz ? Number of slices
39- 43 F5.1 km/s vmin ? Lower value of velocity dimension
45- 48 F4.1 km/s vmax ? Upper value of velocity dimension
50- 52 F3.1 km/s vres ? Velocity resolution
54- 79 A26 --- Obs.date Date and time of the observation
81- 94 F14.1 Hz RestFreq Rest frequency of the cube
96-102 I7 Kibyte size Size of FITS file
104-120 A17 --- FileName Name of FITS file, in subdirectory fits
122-171 A50 --- Title Title of the FITS file
--------------------------------------------------------------------------------
Acknowledgements:
Lukasz Tychoniec, tychoniec(at)strw.leidenuniv.nl
References:
Hull et al., 2016ApJ...823L..27H 2016ApJ...823L..27H
Hull et al., 2017ApJ...847...92H 2017ApJ...847...92H, Cat. J/ApJ/847/92
Le Gouellec et al., 2019ApJ...885..106L 2019ApJ...885..106L
(End) L. Tychoniec [Leiden, The Netherlands], P. Vannier [CDS] 25-Oct-2019