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J/other/RAA/17.62     Candidate members of 4 stellar streams         (Li+, 2017)

Candidate members of the Pal 5, GD-1, Cetus Polar and Orphan tidal stellar halo streams from SDSS DR9, LAMOST DR3 and APOGEE catalogs. Li G.-W., Yanny B., Zhang H.-T., Bai Z.-R., Wu Y., Dong Y.-Q., Lei Y.-J., Yuan H.-L., Hou Y.-H., Wang Y.-F., Zhang Y. <Res. Astron. Astrophys., 17, 62 (2017)> =2017RAA....17...62L (SIMBAD/NED BibCode)
ADC_Keywords: Milky Way ; Morphology ; Radial velocities ; Effective temperatures Keywords: Galaxy: structure general: stream - Galaxy: structure individual (GD-1, Orphan, Cetus, Pal 5) Abstract: We present candidate members of the Pal 5, GD-1, Cetus Polar and Orphan tidal stellar streams found in LAMOST DR3, SDSS DR9 and APOGEE catalogs. In LAMOST DR3, we find 20, 4 and 24 high confidence candidates of tidal streams GD-1, Cetus Polar and Orphan respectively. We also list 59, 118 and 10 high confidence candidates of tidal streams Cetus Polar, Orphan and Pal 5, respectively from the SDSS DR9 spectroscopic catalog. Furthermore, we find seven high confidence candidates of the Pal 5 tidal stream in the APOGEE data. Compared with SDSS, the new candidates from LAMOST DR3 are brighter, so that together, more of the color-magnitude diagram, including the giant branch, can be explored. Analysis of the SDSS data shows that there are three metallicity peaks associated with the Orphan stream which also exhibit some spatial separation. The LAMOST data confirm multiple metallicities in this stream. The metallicity, given by the higher resolution APOGEE instrument, of the Pal 5 tidal stream is [Fe/H]~-1.2, higher than that given earlier by SDSS spectra. Many previously unidentified stream members are tabulated here for the first time, along with existing members, allowing future researchers to further constrain the orbits of these objects as they move within the Galaxy's dark matter potential. Description: We search for stream members, primarily giants (0<logg<3.5), in the LAMOST DR3, SDSS DR9 and APOGEE spectral databases. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 96 48 Candidates in LAMOST table2.dat 110 187 Candidates in SDSS table3.dat 94 7 Candidates in APOGEE
See also: V/139 : SDSS Photometric Catalog, Release 9 (Adelman-McCarthy+, 2012) V/149 : LAMOST DR2 catalogs (Luo+, 2016) J/ApJ/776/26 : RRab stars in the Orphan stream distances (Sesar+, 2013) J/ApJ/819/1 : Wide-field photometry of the GC Palomar 5 (Ibata+, 2016) J/ApJ/823/157 : LOS velocities + [Fe/H] of Pal 5 tidal stream (Ishigaki+, 2016) http://dr3.lamost.org : LAMOST DR3 Home Page http://www.sdss3.org/surveys/apogee.php : APOGEE Home Page Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 6 A6 --- Stream Stream designation 8- 16 I9 --- ObsID LAMOST ObsID (1) 18- 19 A2 --- Subclass Spectral type 21- 32 F12.8 deg RAdeg Right ascension (J2000) 34- 44 F11.8 deg DEdeg Declination (J2000) 46- 52 F7.2 km/s HRV Heliocentric radial velocity 54- 60 F7.2 K Teff Effective temperature 62- 66 F5.2 [-] [Fe/H] Metallicity 68- 71 F4.2 [cm/s2] logg Surface gravity 73- 77 F5.2 km/s e_HRV rms uncertainty on HRV 79- 84 F6.2 K e_Teff rms uncertainty on Teff 86- 89 F4.2 [-] e_[Fe/H] rms uncertainty on [Fe/H] 91- 94 F4.2 [cm/s2] e_logg rms uncertainty on logg 96 I1 --- Level [1/3] Confidence level: 1 represents highest confidence
Note (1): the same object in different observation has different obsid which is unique for all LAMOST spectra.
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 6 A6 --- Stream Stream designation 8- 11 I4 --- Plate SDSS plate number 13- 17 I5 d MJD SDSS MJD number 19- 21 I3 --- Fiber SDSS Fiber number 23- 25 A3 --- Subclass Spectral type 27- 36 F10.6 deg RAdeg Right ascension (J2000) 38- 47 F10.6 deg DEdeg Declination (J2000) 49- 55 F7.2 km/s HRV Heliocentric radial velocity 57- 63 F7.2 K Teff Effective temperature 65- 69 F5.2 [-] [Fe/H] Metallicity 71- 75 F5.2 [-] [Fe/H]wbg ?=- WBG Metallicity (1) 77- 80 F4.2 [cm/s2] logg Surface gravity 82- 86 F5.2 km/s e_HRV rms uncertainty on HRV 88- 93 F6.2 K e_Teff rms uncertainty on Teff 95- 98 F4.2 [-] e_[Fe/H] rms uncertainty on [Fe/H] 100-103 F4.2 [-] e_[Fe/H]wbg ?=- rms uncertainty on [Fe/H]wbg 105-108 F4.2 [cm/s2] e_logg rms uncertainty on logg 110 I1 --- Level [1/3] Confidence level: 1 represents highest confidence
Note (1): Newberg et al. (2009ApJ...700L..61N) found the quoted FEHWBG (Wilhelm et al., 1999, Cat. J/AJ/117/2308) (WBG) parameter is a better measure of metallicity than FEHADOP for blue horizontal branch (BHB) stars, so we use WBG metallicity for stars with (g-r)0≤0.2 and FEHADOP (adopted) metallicity for stars with (g-r)0≥0.2.
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 5 A5 --- Stream Stream designation 7- 24 A18 --- 2MASS 2MASS name (2MHHMMSSss+DDMMSSs) 26- 35 F10.6 deg RAdeg Right ascension (J2000) 37- 45 F9.6 deg DEdeg Declination (J2000) 47- 52 F6.2 km/s HRV Heliocentric radial velocity 54- 60 F7.2 K Teff ? Effective temperature 62- 66 F5.2 [-] [Fe/H] ? Metallicity 68- 71 F4.2 [cm/s2] logg ? Surface gravity 73- 76 F4.2 km/s e_HRV rms uncertainty on HRV 78- 82 F5.2 K e_Teff ? rms uncertainty on Teff 84- 87 F4.2 [-] e_[Fe/H] ? rms uncertainty on [Fe/H] 89- 92 F4.2 [cm/s2] e_logg ? rms uncertainty on logg 94 I1 --- Level [1] Confidence level: 1 represents highest confidence
History: From electronic version of the journal
(End) Patricia Vannier [CDS] 25-Aug-2017
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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