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This Readme file contains a description of the HL Tau Band 3
ALMA 2014 Long Baseline Campaign Science Verification 
data, scripts and data products. 

There are two sets of Band 3 data:
one observed at ~115/113 GHz (12CO J=1-0 & CN N=1-0)
and the other at ~89 GHz (HCN & HCO+, J=1-0).

Angular resolutions achieved for the continuum data are 85 x 61 mas, 35 x 22 mas,
and 30 x 19 mas in Band 3 (102 GHz), Band 6 (233 GHz) and Band 7 (344 GHz),
respectively.

It was necessary to uv-taper the spectral line data so the resulting
angular resolution is coarser (up to 1 arcsec).

Additional information can be found at:
http://almascience.org/alma-data/science-verification

The Calibrated Data and Reference Images provided here were produced using
CASA version 4.2.2.

Imaging scripts and other imaging details can be found at the following
CASA guide page:
http://casaguides.nrao.edu/index.php?title=ALMA2014_LBC_SVDATA

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HLTau_Band3_89GHz_CalibrationScripts.tgz contains the calibration scripts
for the 89 GHz observations:

* uid___A002_X900853_Xc7f.ms.scriptForCalibration.py
* uid___A002_X900853_Xfd2.ms.scriptForCalibration.py
* uid___A002_X9239cd_X1f4.ms.scriptForCalibration.py
* uid___A002_X9239cd_X444.ms.scriptForCalibration.py
* uid___A002_X923b56_Xc.ms.scriptForCalibration.py
* uid___A002_X939760_X22f.ms.scriptForCalibration.py
* uid___A002_X939760_X461.ms.scriptForCalibration.py


HLTau_Band3_115GHz_CalibrationScripts.py contains the calibration scripts
for the 115 GHz observations:

* uid___A002_X91a416_X3b2.ms.scriptForCalibration.py
* uid___A002_X91a416_X5fa.ms.scriptForCalibration.py
* uid___A002_X91a416_X845.ms.scriptForCalibration.py
* uid___A002_X93514d_X220.ms.scriptForCalibration.py
* uid___A002_X93514d_X5b2.ms.scriptForCalibration.py
* uid___A002_X939760_X693.ms.scriptForCalibration.py
* uid___A002_X93ae81_X306.ms.scriptForCalibration.py


HLTau_Band3_89GHz_UncalibratedData.tgz contains the 89 GHz raw data:

Seven asdm datasets:
* uid___A002_X900853_Xc7f
* uid___A002_X900853_Xfd2
* uid___A002_X9239cd_X1f4
* uid___A002_X9239cd_X444
* uid___A002_X923b56_Xc
* uid___A002_X939760_X22f
* uid___A002_X939760_X461


HLTau_Band3_115GHz_UncalibratedData.tgz contains the 115 GHz raw data:

Seven asdm datasets:
* uid___A002_X91a416_X3b2
* uid___A002_X91a416_X5fa
* uid___A002_X91a416_X845
* uid___A002_X93514d_X220
* uid___A002_X93514d_X5b2
* uid___A002_X939760_X693
* uid___A002_X93ae81_X306


HLTau_Band3_CalibratedData.tgz contains the calibrated uv-data:

* HLTau_B3_7exec.ms.cal.cn
* HLTau_B3_7exec.ms.cal.co
* HLTau_B3cont16.ms
* HLTau_B3HCN_1_7.fixed.calHCN
* HLTau_B3HCN_1_7.fixed.calHCOp
* calibration

To produce these calibrated datasets you will need to execute the calibration
scripts in HLTau_Band3_89GHz_CalibrationScripts.tgz and
HLTau_Band3_115GHz_CalibrationScripts.tgz and follow the imaging scripts that
are located at the CASA guide page listed above.

HLTau_B3cont16.ms is the continuum only dataset, produced from the combination
of both Band 3 tunings. See the CASA guide page and imaging script for details.

The directory "calibration" contains the self-calibration tables that are
produced as part of the imaging script. Users can use these tables to
self-calibrate the provided calibrated data. Alternatively, users can perform
self-calibration and generate these tables by following the provided imaging
scripts that are located on the CASA guide page. Note that self-calibration
was not performed on the line data.


HLTau_Band3_ReferenceImages.tgz contains the Band 3 continuum image products:

* HLTau_B3.contms_ap_big.image.pbcor.fits


HLTau_Band3_115GHz_ReferenceImages.tgz contains the CO and CN line image products:

* HLTau_CN1_0.tap200klR0.5_0.25kms_113.48812.image.fits
* HLTau_CN1_0.tap200klR0.5_0.25kms_113.49097.image.fits
* HLTau_CN1_0.tap200klR0.5_0.25kms_113.49097.image.mom0.fits
* HLTau_CN1_0.tap200klR0.5_0.25kms_113.49964.image.fits
* HLTau_CN1_0.tap200klR0.5_0.25kms_113.50891.image.fits
* HLTau_CO1_0.tap200klR0.5_0.25kms_ms.flux.fits
* HLTau_CO1_0.tap200klR0.5_0.25kms_ms.image.fits
* HLTau_CO1_0.tap200klR0.5_0.25kms_ms.image.mom0mask.fits


HLTau_Band3_89GHz_ReferenceImages.tgz contains the HCN and HCO+ line image products:

* HLTau_HCN1_0.tap200klR0.5_0.25kms.flux.fits
* HLTau_HCN1_0.tap200klR0.5_0.25kms.image.fits
* HLTau_HCN1_0.tap200klR0.5_0.25kms.image.mom0.fits
* HLTau_HCOp1_0.tap200klR0.5_0.25kms_ms.flux.fits
* HLTau_HCOp1_0.tap200klR0.5_0.25kms_ms.image.fits
* HLTau_HCOp1_0.tap200klR0.5_0.25kms_ms.image.mom0mask.fits
* HLTau_HCOp1_0.tap200klR0.5_0.25kms_ms.image.mom.weighted_coord.fits
* HLTau_HCOp_taper0.25_R0_0.25kms.flux.fits
* HLTau_HCOp_taper0.25_R0_0.25kms.image.fits
* HLTau_HCOp_taper0.25_R0_0.25kms.image.specsmooth.mom0mask.fits


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Publications making use of these data must include the following statement 
in the acknowledgement:

"This paper makes use of the following ALMA data: ADS/JAO.ALMA#2011.0.00015.SV. 
ALMA is a partnership of ESO (representing its member states), NSF (USA) and 
NINS (Japan), together with NRC (Canada) and NSC and ASIAA (Taiwan), and KASI (Republic of Korea), 
in cooperation with the Republic of Chile. The Joint ALMA Observatory is 
operated by ESO, AUI/NRAO and NAOJ."

In addition, publications from NA authors must include the standard NRAO 
acknowledgement:

"The National Radio Astronomy Observatory is a facility of the National 
Science Foundation operated under cooperative agreement by Associated 
Universities, Inc."

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