J/AJ/146/62 HERschel HERITAGE in Magellanic Clouds (Meixner+, 2013)
The HERschel Inventory of The Agents of Galaxy Evolution in the
Magellanic Clouds, a Herschel open time key program.
Meixner M., Panuzzo P., Roman-Duval J., Engelbracht C., Babler B.,
Seale J., Hony S., Montiel E., Sauvage M., Gordon K., Misselt K.,
Okumura K., Chanial P., Beck T., Bernard J.-P., Bolatto A., Bot C.,
Boyer M.L., Carlson L.R., Clayton G.C., Chen C.-H.R., Cormier D., Fukui Y.,
Galametz M., Galliano F., Hora J.L., Hughes A., Indebetouw R., Israel F.P.,
Kawamura A., Kemper F., Kim S., Kwon E., Lebouteiller V., Li A., Long K.S.,
Madden S.C., Matsuura M., Muller E., Oliveira J.M., Onishi T., Otsuka M.,
Paradis D., Poglitsch A., Reach W.T., Robitaille T.P., Rubio M.,
Sargent B., Sewilo M., Skibba R., Smith L.J., Srinivasan S.,
Tielens A.G.G.M., van Loon J.T., Whitney B.
<Astron. J., 146, 62 (2013)>
=2013AJ....146...62M 2013AJ....146...62M (SIMBAD/NED BibCode)
ADC_Keywords: Galaxies, IR ; Magellanic Clouds ; Photometry, infrared ; Surveys
Mission_Name: Herschel
Keywords: catalogs - dust, extinction - infrared: galaxies - Magellanic Clouds -
submillimeter: general - surveys
Abstract:
We present an overview of the HERschel Inventory of The Agents of
Galaxy Evolution (HERITAGE) in the Magellanic Clouds project, which is
a Herschel Space Observatory open time key program. We mapped the
Large Magellanic Cloud (LMC) and Small Magellanic Cloud (SMC) at 100,
160, 250, 350, and 500µm with the Spectral and Photometric Imaging
Receiver (SPIRE) and Photodetector Array Camera and Spectrometer
(PACS) instruments on board Herschel using the SPIRE/PACS parallel
mode. The overriding science goal of HERITAGE is to study the life
cycle of matter as traced by dust in the LMC and SMC. The far-infrared
and submillimeter emission is an effective tracer of the interstellar
medium (ISM) dust, the most deeply embedded young stellar objects
(YSOs), and the dust ejected by the most massive stars. We describe in
detail the data processing, particularly for the PACS data, which
required some custom steps because of the large angular extent of a
single observational unit and overall the large amount of data to be
processed as an ensemble. We report total global fluxes for the LMC
and SMC and demonstrate their agreement with measurements by prior
missions. The HERITAGE maps of the LMC and SMC are dominated by the
ISM dust emission and bear most resemblance to the tracers of ISM gas
rather than the stellar content of the galaxies. We describe the point
source extraction processing and the criteria used to establish a
catalog for each waveband for the HERITAGE program. The 250µm band
is the most sensitive and the source catalogs for this band have
∼25,000 objects for the LMC and ∼5500 objects for the SMC. These data
enable studies of ISM dust properties, submillimeter excess dust
emission, dust-to-gas ratio, Class 0 YSO candidates, dusty massive
evolved stars, supernova remnants (including SN1987A), HII regions,
and dust evolution in the LMC and SMC. All images and catalogs are
delivered to the Herschel Science Center as part of the community
support aspects of the project. These HERITAGE images and catalogs
provide an excellent basis for future research and follow up with
other facilities.
Description:
We have created source extraction catalogs for the LMC and SMC in all
5 bands. The SPIRE 250µm catalogs are the most sensitive and have
∼25000 sources in the LMC and ∼5500 in the SMC. The Catalog of
sources at a particular wavelength contains only combined-epoch
sources that 1) are detected in at least two single epoch images of
the same wavelength, 2) are identified in at least 2 other wavelengths
in combined-epoch Herschel or Spitzer images, or 3) are detected in
one single epoch image of the same wavelength and at least one other
combined-epoch image at a different wavelength.
All images and catalogs are available at:
Herschel Science Archive:
http://herschel.esac.esa.int/Science_Archive.shtml
Herschel User Provided Data Products web page:
http://herschel.esac.esa.int/UserProvidedDataProducts.shtml
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
lmcp100.dat 124 4164 LMC PACS 100µm source catalog
smcp100.dat 124 898 SMC PACS 100µm source catalog
lmcp160.dat 126 9324 LMC PACS 160µm source catalog
smcp160.dat 126 1590 SMC PACS 160µm source catalog
lmcs250.dat 126 25445 LMC SPIRE 250µm source catalog
smcs250.dat 126 5465 SMC SPIRE 250µm source catalog
lmcs350.dat 126 22082 LMC SPIRE 350µm source catalog
smcs350.dat 126 5313 SMC SPIRE 350µm source catalog
lmcs500.dat 124 7355 LMC SPIRE 500µm source catalog
smcs500.dat 124 1069 SMC SPIRE 500µm source catalog
--------------------------------------------------------------------------------
See also:
http://irsa.ipac.caltech.edu/data/Herschel/HERITAGE : HERITAGE Home Page
Byte-by-byte Description of file: lmcp100.dat smcp100.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 11 A11 --- --- [HSOP2HERICC]
13- 28 A16 --- P2name Name of the source,
HSOP2HERICC JDD.dddd+DD.dddd (G1)
30- 38 F9.6 deg RAdeg Right Ascension, J2000
40- 49 F10.6 deg DEdeg Declination, J2000
51- 54 F4.2 arcsec e_RAdeg Right Ascension uncertainty
56- 59 F4.2 arcsec e_DEdeg Declanation uncertainty
61- 69 E9.4 mJy Flux Starfinder-extracted 100µm flux
71- 79 E9.4 mJy e_Flux rms uncertainty on Flux
81 I1 --- q_Flux [1/4] Quality of Flux, 1=best (G2)
83 I1 --- fm [0/1] Source in masked region, O=ok (G3)
85- 93 E9.4 mJy s_Flux Starfinder-estimated uncertainty of flux
95-104 E10.4 MJy/sr Sky Starfinder-determined sky brightness
106-110 F5.1 arcsec FWHM Full-width-at-half-maximum (G5)
112 I1 --- fc [0/1] Confusion flag, 0=ok (G4)
114-118 F5.3 --- Corr [0.75/1] Starfinder correlation parameter
120 I1 --- Ne Number of single-epoch images the source
was identified in
122 I1 --- N160 Number of PACS 160µm Full List sources
within 8.8"
124 I1 --- N24 Number of Spitzer/MIPS 24µm Catalog
sources within 6.0"/6.2"
--------------------------------------------------------------------------------
Byte-by-byte Description of file: lmcp160.dat smcp160.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 11 A11 --- --- [HSOP3HERICC]
13- 28 A16 --- P3name Name of the source,
HSOP3HERICC JDD.dddd+DD.dddd (G1)
30- 38 F9.6 deg RAdeg Right Ascension, J2000
40- 49 F10.6 deg DEdeg Declination, J2000
51- 54 F4.2 arcsec e_RAdeg Right Ascension uncertainty
56- 59 F4.2 arcsec e_DEdeg Declanation uncertainty
61- 69 E9.4 mJy Flux Starfinder-extracted 160µm flux
71- 79 E9.4 mJy e_Flux rms uncertainty on Flux
81 I1 --- q_Flux [1/4] Quality of Flux, 1=best (G2)
83 I1 --- fm [0/1] Source in masked region, O=ok (G3)
85- 93 E9.4 mJy s_Flux Starfinder-estimated uncertainty of flux
95-104 E10.4 MJy/sr Sky Starfinder-determined sky brightness
106-110 F5.1 arcsec FWHM Full-width-at-half-maximum (G5)
112 I1 --- fc [0/1] Confusion flag, 0=ok (G4)
114-118 F5.3 --- Corr [0.75/1] Starfinder correlation parameter
120 I1 --- Ne Number of single-epoch images the source
was identified in
122 I1 --- N100 Number of PACS 100µm Full List sources
within 8.8"
124 I1 --- N250 Number of SPIRE 250µm Full List sources
within 12.8"
126 I1 --- N70 Number of Spitzer/MIPS 70µm Catalog
sources within 12.6"
--------------------------------------------------------------------------------
Byte-by-byte Description of file: lmcs250.dat smcs250.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 11 A11 --- --- [HSOS1HERICC]
13- 28 A16 --- S1name Name of the source,
HSOS1HERICC JDD.dddd+DD.dddd (G1)
30- 38 F9.6 deg RAdeg Right Ascension, J2000
40- 49 F10.6 deg DEdeg Declination, J2000
51- 54 F4.2 arcsec e_RAdeg Right Ascension uncertainty
56- 59 F4.2 arcsec e_DEdeg Declanation uncertainty
61- 69 E9.4 mJy Flux Starfinder-extracted 250µm flux
71- 79 E9.4 mJy e_Flux rms uncertainty on Flux
81 I1 --- q_Flux [1/4] Quality of Flux, 1=best (G2)
83 I1 --- fm [0/1] Source in masked region, O=ok (G3)
85- 93 E9.4 mJy s_Flux Starfinder-estimated uncertainty of flux
95-104 E10.4 MJy/sr Sky Starfinder-determined sky brightness
106-110 F5.1 arcsec FWHM Full-width-at-half-maximum (G5)
112 I1 --- fc [0/1] Confusion flag, 0=ok (G4)
114-118 F5.3 --- Corr [0.75/1] Starfinder correlation parameter
120 I1 --- Ne Number of single-epoch images the source
was identified in
122 I1 --- N160 Number of PACS 160µm Full List sources
within 12.8"
124 I1 --- N350 Number of SPIRE 350µm Full List sources
within 18.7"
126 I1 --- N70 Number of Spitzer/MIPS 70µm Catalog
sources within 12.8"
--------------------------------------------------------------------------------
Byte-by-byte Description of file: lmcs350.dat smcs350.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 11 A11 --- --- [HSOS2HERICC]
13- 28 A16 --- S2name Name of the source,
HSOS2HERICC JDD.dddd+DD.dddd (G1)
30- 38 F9.6 deg RAdeg Right Ascension, J2000
40- 49 F10.6 deg DEdeg Declination, J2000
51- 54 F4.2 arcsec e_RAdeg Right Ascension uncertainty
56- 59 F4.2 arcsec e_DEdeg Declanation uncertainty
61- 69 E9.4 mJy Flux Starfinder-extracted 350µm flux
71- 79 E9.4 mJy e_Flux rms uncertainty on Flux
81 I1 --- q_Flux [1/4] Quality of Flux, 1=best (G2)
83 I1 --- fm [0/1] Source in masked region, O=ok (G3)
85- 93 E9.4 mJy s_Flux Starfinder-estimated uncertainty of flux
95-104 E10.4 MJy/sr Sky Starfinder-determined sky brightness
106-110 F5.1 arcsec FWHM Full-width-at-half-maximum (G5)
112 I1 --- fc [0/1] Confusion flag, 0=ok (G4)
114-118 F5.3 --- Corr [0.75/1] Starfinder correlation parameter
120 I1 --- Ne Number of single-epoch images the source
was identified in
122 I1 --- N250 Number of SPIRE 250µm Full List sources
within 18.7"
124 I1 --- N500 Number of SPIRE 500µm Full List sources
within 28.4"/27.8"
126 I1 --- N70 Number of Spitzer/MIPS 70µm Catalog
sources within 18.7"
--------------------------------------------------------------------------------
Byte-by-byte Description of file: lmcs500.dat smcs500.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 11 A11 --- --- [HSOS3HERICC]
13- 28 A16 --- S3name Name of the source,
HSOS3HERICC JDD.dddd+DD.dddd (G1)
30- 38 F9.6 deg RAdeg Right Ascension, J2000
40- 49 F10.6 deg DEdeg Declination, J2000
51- 54 F4.2 arcsec e_RAdeg Right Ascension uncertainty
56- 59 F4.2 arcsec e_DEdeg Declanation uncertainty
61- 69 E9.4 mJy Flux Starfinder-extracted 500µm flux
71- 79 E9.4 mJy e_Flux rms uncertainty on Flux
81 I1 --- q_Flux [1/4] Quality of Flux, 1=best (G2)
83 I1 --- fm [0/1] Source in masked region, O=ok (G3)
85- 93 E9.4 mJy s_Flux Starfinder-estimated uncertainty of flux
95-104 E10.4 MJy/sr Sky Starfinder-determined sky brightness
106-110 F5.1 arcsec FWHM Full-width-at-half-maximum (G5)
112 I1 --- fc [0/1] Confusion flag, 0=ok (G4)
114-118 F5.3 --- Corr [0.75/1] Starfinder correlation parameter
120 I1 --- Ne Number of single-epoch images the source
was identified in
122 I1 --- N350 Number of SPIRE 350µm Full List sources
within 28.4"/27.8"
124 I1 --- N160 Number of Spitzer/MIPS 160µm Full List
sources within 28.4"/27.8"
-------------------------------------------------------------------------------
Global notes:
Note (G1): Source name convention is an 11 character string, HSOINHERICC,
followed by source-specific position designation JDD.dddd+DD.dddd:
* HSO denotes the observatory, Herschel Space Observatory, HSO;
* I specifies the instrument (P for PACS, S for SPIRE) and the wavelength
(2, 3, 1, 2, 3 for 100, 160, 250, 350, and 500µm, respectively);
* HERI is a four-character code for the HERITAGE project, HERI;
* C denotes the epoch (all sources are marked with C,
combined epoch detections)
* C designates the list type, C for Catalog.
* JDD.dddd+DD.ddd are the right ascension and declination,
in degrees to 4 decimal places.
Note (G2): Quality flag us (see the associated paper for more details):
1 = sources that have a measured FWHM consistent with the FWHM of the PSF
(FWHMsource<1.1FWHMPSF). The flux for flux flag set to 1 sources is
therefore a robust accounting of the sources' brightnesses.
2 = FWHM determination failed, but the source has a S/N of greater than 5
3 = sources that have a measured FWHM greater than that of the PSF
(FWHMsource>1.1FWHMPSF)
4 = sources should be considered true sources with highly uncertain or
unknown fluxes
Note (G3): this flag (fStripe) notes if source is in masked region
and may suffer from striping:
1 = masked
0 = unmasked
Note (G4): Flag is:
1 = confused
0 = not confused
See the associated paper for more details.
Note (G5): See the associated paper for more details.
--------------------------------------------------------------------------------
Acknowledgements:
Maria del Mar Sierra, mar.sierra(at)sciops.esa.int
(End) Patricia Vannier [CDS] 06-Feb-2014