J/AJ/161/74 SMASH DR2. 197 SMASH fields (Nidever+, 2021)
The second data release of the Survey of the MAgellanic Stellar History (SMASH).
Nidever D.L., Olsen K., Choi Y., Ruiz-Lara T., Miller A.E., Johnson L.C.,
Bell C.P.M., Blum R.D., Cioni M.-R.L., Gallart C., Majewski S.R.,
Martin N.F., Massana P., Monachesi A., Noel N.E.D., Sakowska J.D., van der
Marel R.P., Walker A.R., Zaritsky D., Bell E.F., Conn B.C., de Boer T.J.L.,
Gruendl R.A., Monelli M., Munoz R.R., Saha A., Vivas A.K., Bernard E.,
Besla G., Carballo-Bello J.A., Dorta A., Martinez-Delgado D., Goater A.,
Rusakov V., Stringfellow G.S.
<Astron. J., 161, 74 (2021)>
=2021AJ....161...74N 2021AJ....161...74N
ADC_Keywords: Magellanic Clouds ; Populations, stellar ; Surveys
Keywords: Magellanic Clouds ; Local Group ; Milky Way Galaxy ; Dwarf galaxies ;
Dwarf irregular galaxies ; Surveys ; Large Magellanic Cloud ;
Small Magellanic Cloud ; Photometry ; CCD photometry
Abstract:
The Large and Small Magellanic Clouds (LMC and SMC) are the largest
satellite galaxies of the Milky Way and close enough to allow for a
detailed exploration of their structure and formation history. The
Survey of the MAgellanic Stellar History (SMASH) is a community Dark
Energy Camera (DECam) survey of the Magellanic Clouds using ∼50 nights
to sample over ∼2400deg2 centered on the Clouds at ∼20% filling
factor (but with contiguous coverage in the central regions) and to
depths of ∼24th mag in ugriz. The primary goals of SMASH are to map
out the extended stellar peripheries of the Clouds and uncover their
complicated interaction and accretion history as well as to derive
spatially resolved star formation histories of the central regions and
create a "movie" of their past star formation. Here we announce the
second SMASH public data release (DR2), which contains all 197 fully
calibrated DECam fields including the main body fields in the central
regions. The DR2 data are available through the Astro Data Lab hosted
by the NSF's National Optical-Infrared Astronomy Research Laboratory.
We highlight three science cases that make use of the SMASH DR2 data
and will be published in the future: (1) preliminary star formation
histories of the LMC, (2) the search for Magellanic star clusters
using citizen scientists, and, (3) photometric metallicities of
Magellanic Cloud stars using the DECam u-band.
Description:
The second Survey of the MAgellanic Stellar History (SMASH) public
data release contains ∼4 billion measurements of ∼360 million objects
in 197 fully calibrated fields covering ∼480deg2 and sampling
∼2400deg2 of the Magellanic system. Of the 61 fields released in DR1
(Nidever+, 2017, J/AJ/154/199) the data for 29 fields have been
reprocessed but for the other 32 fields the catalogs are identical to
those in DR1 except for some additional columns that we added in DR2.
As for SMASH DR1, the main data access is through the Astro Data Lab38
hosted by NSF's National Optical-Infrared Astronomy Research
Laboratory (NOIRLab; http://datalab.noao.edu/smash/smash.php).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 79 197 SMASH fields table
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See also:
II/351 : VISTA Magellanic Survey (VMC) catalog (Cioni+, 2011)
II/328 : AllWISE Data Release (Cutri+ 2013)
I/337 : Gaia DR1 (Gaia Collaboration, 2016)
I/345 : Gaia DR2 (Gaia Collaboration, 2018)
VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)
V/146 : LAMOST DR1 catalogs (Luo+, 2015)
J/AJ/117/2244 : HST color-magnitude diagrams of the LMC (Olsen, 1999)
J/AcA/49/521 : OGLE LMC star clusters BVI photometry (Pietrzynski+, 1999)
J/AJ/123/855 : Magellanic Clouds Photometric Survey: the SMC (Zaritsky+, 2002)
J/AJ/127/1531 : Star formation history of SMC (Harris+, 2004)
J/AJ/131/414 : Structural parameters of SMC star clusters (Hill+, 2006)
J/MNRAS/389/678 : Catalogue of extended objects Magellanic Clouds (Bica+,2008)
J/AJ/135/836 : Calcium triplet index in LMC stars (Carrera+, 2008)
J/AJ/138/1243 : The star formation history of the LMC (Harris+, 2009)
J/A+A/517/A50 : Ages & luminosities young SMC/LMC star clusters (Glatt+, 2010)
J/AJ/142/48 : LMC star clusters structural parameters (Werchan+, 2011)
J/ApJ/802/127 : PHAT stellar cluster survey. II. AP catalog (Johnson+, 2015)
J/ApJ/845/56 : Star clusters automatically detected in LMC (Bitsakis+, 2017)
J/AJ/154/199 : SMASH: Survey of the MAgellanic Stellar History (Nidever+,2017)
J/ApJ/853/104 : Ages of star clusters in SMC (Bitsakis+, 2018)
J/AJ/159/82 : Cat. of extended objects in Magellanic clouds (Bica+, 2020)
J/MNRAS/499/4114 : Properties of LMC star clusters (Gatto+, 2020)
http://datalab.noao.edu/smash/smash.php : SMASH Survey homepage
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Seq [1/247] Field sequential number
5- 13 A9 --- Name Field name
15- 16 I2 h RAh [0/23] Hour of right ascension (J2000)
18- 19 I2 min RAm Minute of ight ascension (J2000)
21- 25 F5.2 s RAs Second of right ascension (J2000)
27- 27 A1 --- DE- [-] Sign of declination (J2000)
28- 29 I2 deg DEd [15/87] Degree of declination (J2000)
31- 32 I2 arcmin DEm Arcminute of declination (J2000)
34- 38 F5.2 arcsec DEs Arcsecond of declination (J2000)
40- 48 F9.5 deg RAdeg [2.58/352] Degree of right ascension (J2000)
50- 59 F10.6 deg DEdeg [-88/-15] Degree of declination (J2000)
61- 69 F9.5 deg MSLON [-22.5/71.2] Magellanic Stream Longitude (1)
71- 79 F9.5 deg MSLAT [-37.9/32.3] Magellanic Stream Latitude (1)
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Note (1): The Magellanic Stream coordinate system is defined in Paper I.
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History:
From electronic version of the journal
References:
Nidever et al. Paper I : 2017AJ....154..199N 2017AJ....154..199N cat. J/AJ/154/199
(End) Prepared by [AAS], Coralie Fix [CDS], 04-May-2021