Data from the IRAM-30m Large Program `Astrochemical Surveys At IRAM' (ASAI)
Authors/Creators
- 1. CNRS, IPAG, Univ. Grenoble Alpes, F-38000 Grenoble, France
- 2. IGN Observatorio Astronómico Nacional, Apartado 1143, E-28800 Alcalá de Henares, Spain
Description
Dataset for the ASAI IRAM-30m Large Program (https://www.iram-institute.org/EN/content-page-344-7-158-240-344-0.html) provided in zenodo within the framework of ACO (AstroChemical Origins): (H2020 MSCA ITN, GA:811312)
The reference article is Lefloch et al. 2018, Monthly Notices of the Royal Astronomical Society, Volume 477, Issue 4, p.4792-4809
whose doi is: 10.1093/mnras/sty937
Fully reduced spectral line surveys are included for 10 young stellar objects.
SOURCE SAMPLE:
----------------------------------------------------------------------------------------------------------------
Sources alpha(2000) delta(2000) rms rms rms dnu Comment
(3mm) (2mm) (1.3mm) kHz
----------------------------------------------------------------------------------------------------------------
L1544 05h04m17.2s 25d10'42.8" 2.1-7.0 - - 48.8 Evolved prestellar core
TMC1 04h41m41.9s 25d41'27.1" 3.0-6.3 4.2-4.2 - 48.8, 195.3 Early prestellar core
B1 03h33m20.8s 31d07'34.0" 2.5-10.6 4.4-8.0 4.2-4.6 195.3 First hydrostatic core
IRAS4A 03h29m10.4s 31d13'32.2" 2.5-3.4 5.0-6.1 4.6-3.9 195.3 Class 0: Hot corino prototype
L1527 04h39m53.9s 26d03'11.0" 2.1-6.7 4.2-7.1 4.6-4.1 195.3 Class 0: WCCC prototype
L1157mm 20h39m06.3s 68d02'15.8" 3.0-4.7 5.0-6.5 3.8-3.5 195.3 Class 0: WCCC
SVS13A 03h29m03.7s 31d16'03.8" 2.0-4.8 4.2-5.1 4.6-4.3 195.3 Class I: Hot corino
AB Aur 04h55m45.8s 30d33'33.0" 4.6-4.3 4.8-3.9 2.1-4.3 195.3 Protoplanetary disk
L1448-R2 03h25m40.1s 30d43'31.0" 2.8-4.9 6.0-9.7 2.9-4.9 195.3 Outflow shock spot
L1157-B1 20h39m10.2s 68d01'10.5" 1.1-2.9 4.6-7.2 2.1-4.2 195.3 Outflow shock spot
------------------------------------------------------------------------------------------------------------------
i)spectral coverage, spectral resolution, and range of rms noise achieved in an element of 1 km/s for each spectral window.
The rms values (in TA*) are measured in the range 86-87 GHz and 113-114 GHz at 3mm, 132-133 GHz and 169-170 GHz at 2mm,
220-221 and 260-261 GHz.
ii) No data were obtained at 2mm and 1.3mm for L1544, at 3mm and 1.3mm for TMC1.
iii) Complementary observations in the band 72-80 GHz have been obtained for L1544 and protostars IRAS4A, L1527, L1157mm,
SVS13A. The 72-80 GHz and 106-115 GHz data of L1544 will be made available in a forthcoming release
iv) The data of AB Aur will be made available in a forthcoming release
OBSERVATIONS AND SPECTRAL COVERAGE:
Details about the observing procedure and the calibration can be found in the article presenting ASAI: "Astrochemical evolution
along star formation: Overview of the IRAM Large Program ASAI" (Lefloch, Bachiller et al. 2017).
L1544 80.0 - 106.0 GHz
TMC1 130.0 - 164.9 GHz ; gap from 161.6 to 163.0 GHz
Barnard1 80.5 - 112.2 GHz
130.0 - 172.7 GHz
200.5 - 276.0 GHz
IRAS4A 71.7 - 79.6 GHz
80.5 - 112.3 GHz
125.5 - 133.3 GHz
130.0 - 172.8 GHz
200.5 - 276.0 GHz
L1527 71.7 - 79.6 GHz
80.5 - 112.3 GHz
125.5 - 133.3 GHz
130.0 - 172.8 GHz
200.5 - 276.0 GHz
L1157mm 71.7 - 79.6 GHz
80.5 - 112.3 GHz
125.5 - 133.3 GHz
130.0 - 172.8 GHz
200.5 - 276.0 GHz
SVS13A 71.7 - 79.6 GHz
80.5 - 116.0 GHz
125.5 - 133.3 GHz
130.0 - 172.8 GHz
200.5 - 276.0 GHz
L1448-R2 80.5 - 116.0 GHz
130.0 - 173.3 GHz
200.5 - 276.0 GHz
L1157-B1 71.7 - 79.5 GHz
78.0 - 118.0 GHz; fts 390 kHz res;
125.5 - 133.3 GHz
128.2 - 173.7 GHz
200.2 - 265.5 GHz; fts 781 kHz res;
260.4 - 322.1 GHz; WILMA 2 MHz res:
328.4 - 350.1 GHz; WILMA 2 MHz res;
The data obtained for each source are located in the corresponding subdirectory:
source_f1_f2.fits : calibrated spectral band in the band f1 - f2 (in GHz)
source_72_80.fits : complementary data in the bands 72-80 GHz whenever observed.
source_125_133.fits : complementary data in the band 125.5-133.5 whenever observed.
UNITS:
The line intensity are expressed in units of antenna temperature corrected for atmospheric attenuation and the coupling with
the sky, TA*, by default. The interested user should to the IRAM webpage http://www.iram.es/IRAMES/mainWiki/Iram30mEfficiencies
to convert line intensities from antenna to main-beam temperature scale.
QUESTIONS and ACKNOWLEDGMENTS
If you have any questions about the data please contact us
(bertrand.lefloch@univ-grenoble-alpes.fr, r.bachiller@oan.es). We also like to hear about any
scientific use of the data and would appreciate acknowledgment in
publications or talks using the ASAI data.
Files
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Additional details
References
- 10.1093/mnras/sty937