J/AJ/156/90  New catalog of APOGEE radial velocity standard stars (Huang+, 2018)

A new catalog of radial velocity standard stars from the APOGEE data. Huang Y., Liu X.-W., Chen B.-Q., Zhang H.-W., Yuan H.-B., Xiang M.-S., Wang C., Tian Z.-J. <Astron. J., 156, 90 (2018)> =2018AJ....156...90H 2018AJ....156...90H (SIMBAD/NED BibCode)
ADC_Keywords: Stars, standard ; Radial velocities ; Photometry, infrared ; Effective temperatures Keywords: catalogs - stars: kinematics and dynamics - techniques: radial velocities Abstract: We present a new catalog of 18080 radial velocity (RV) standard stars selected from the APOGEE data. These RV standard stars are observed at least three times and have a median stability (3σRV) around 240 m/s over a time baseline longer than 200 days. They are largely distributed in the northern sky and could be extended to the southern sky by the future APOGEE-2 survey. Most of the stars are red giants (J-Ks≥0.5) owing to the APOGEE target selection criteria. Only about 10 per cent of them are main-sequence stars. The H-band magnitude range of the stars is 7-12.5 mag with the faint limit much fainter than the magnitudes of previous RV standard stars. As an application, we show the new set of standard stars to determine the RV zero points of the RAVE, the LAMOST, and the Gaia-RVS Galactic spectroscopic surveys. Description: The APOGEE survey currently includes APOGEE-1 and APOGEE-2. As an important component of SDSS-III (Eisenstein et al. 2011AJ....142...72E 2011AJ....142...72E), the APOGEE-1 survey was executed from 2011 September to 2014 July using the APOGEE-North spectrograph on the Sloan Foundation 2.5 m telescope of Apache Point Observatory (APO). It has collected about half million high S/N, high resolution (R∼22500), near-infrared (H band; 1.51-1.70 µm) spectra for over 163000 stars in the bulge, disk and halo of our Galaxy. As a successor of APOGEE-1 and part of SDSS-IV (2014-2020; Blanton et al. 2017AJ....154...28B 2017AJ....154...28B), the APOGEE-2 survey will expand the APOGEE-1 to an all-sky H-band spectroscopic survey using the original APOGEE-North spectrograph on the Sloan Foundation 2.5 m telescope of APO and another clonal spectrograph (APOGEE-South) on the Irenee du Pont 2.5 m telescope of Las Campanas Observatory (LCO). The survey expects to collect high resolution, near-infrared spectra of ∼3x105 stars across the entire sky (Majewski et al. 2016AN....337..863M 2016AN....337..863M; Zasowski et al. 2017AJ....154..198Z 2017AJ....154..198Z). In the current work, we use the APOGEE data released in SDSS DR14 (Abolfathi et al. 2018ApJS..235...42A 2018ApJS..235...42A), which contains about one million spectra of around 300000 unique stars collected during APOGEE-1 (2011-2014) and APOGEE-2 (2014-2016). File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file table2.dat 82 18080 The final sample of APOGEE radial velocity standard stars -------------------------------------------------------------------------------- See also: J/A+A/524/A10 : Radial Velocity standard stars (Crifo+, 2010) Byte-by-byte Description of file: table2.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 2 I2 h RAh Hour of Right Ascension (J2000) 4- 5 I2 min RAm Minute of Right Ascension (J2000) 7- 11 F5.2 s RAs Second of Right Ascension (J2000) 13- 13 A1 --- DE- Sign of the Declination (J2000) 14- 15 I2 deg DEd Degree of Declination (J2000) 17- 18 I2 arcmin DEm Arcminute of Declination (J2000) 20- 23 F4.1 arcsec DEs Arcsecond of Declination (J2000) 25- 29 F5.2 mag Hmag [2.34/12.46] 2MASS H band magnitude 31- 34 F4.2 mag J-Ks [0.12/4.29] 2MASS J-Ks color 36- 39 I4 K Teff [3562/6296] APOGEE effective temperature 41- 48 F8.3 km/s HRV [-539.964/337.832] Corrected, mean, weighted heliocentric radial velocity (2) (1) 50- 55 F6.4 km/s IeRV [0.0006/0.199] Internal error of the mean radial velocity (2) 57- 62 F6.4 km/s s_HRV [0.0002/0.2] Weighted standard deviation of HRV (2) 64- 65 I2 --- o_HRV [3/41] Number of observations of HRV 67- 72 F6.4 km/s e_HRV [0.0015/0.1154] Uncertainty in HRV (2) 74- 77 I4 d DT [202/1831] Time baseline ΔT 79- 82 I4 d MJD [5776/7508] Mean Modified Julian Date of the o_HRV observations (MJD-50000) -------------------------------------------------------------------------------- Note (1): Mean, weighted heliocentric radial velocity after applying the RVZP corrections given by Eq. (1): ΔRV=-1.1069+0.2558x(Teff/103K) km/s. Note (2): See text, Section 3.3 for definitions of derived HRV quantities. -------------------------------------------------------------------------------- History: From electronic version of the journal
(End) Prepared by [AAS], Tiphaine Pouvreau [CDS] 15-Feb-2019
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