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3321. Sloan Digital Sky Survey coadd. Stripe 82
ID:
ivo://CDS.VizieR/J/ApJ/794/120
Title:
Sloan Digital Sky Survey coadd. Stripe 82
Short Name:
J/ApJ/794/120
Date:
21 Oct 2021
Publisher:
CDS
Description:
We present details of the construction and characterization of the coaddition of the Sloan Digital Sky Survey (SDSS) Stripe 82 ugriz imaging data. This survey consists of 275 deg^2^ of repeated scanning by the SDSS camera over -50{deg}<={alpha}<=60{deg} and -1.25{deg}<={delta}<= +1.25{deg} centered on the Celestial Equator. Each piece of sky has ~20 runs contributing and thus reaches ~2mag fainter than the SDSS single pass data, i.e., to r~23.5 for galaxies. We discuss the image processing of the coaddition, the modeling of the point-spread function (PSF), the calibration, and the production of standard SDSS catalogs. The data have an r-band median seeing of 1.1'' and are calibrated to <=1%. Star color-color, number counts, and PSF size versus modeled size plots show that the modeling of the PSF is good enough for precision five-band photometry. Structure in the PSF model versus magnitude plot indicates minor PSF modeling errors, leading to misclassification of stars as galaxies, as verified using VVDS spectroscopy. There are a variety of uses for this wide-angle deep imaging data, including galactic structure, photometric redshift computation, cluster finding and cross wavelength measurements, weak lensing cluster mass calibrations, and cosmic shear measurements.
3322. Sloan Digital Sky Surveys (SDSS), Release 16 (DR16)
ID:
ivo://CDS.VizieR/V/154
Title:
Sloan Digital Sky Surveys (SDSS), Release 16 (DR16)
Short Name:
V/154
Date:
25 Feb 2022 11:21:42
Publisher:
CDS
Description:
This paper documents the 16th data release (DR16) from the Sloan Digital Sky Surveys (SDSS), the fourth and penultimate from the fourth phase (SDSS-IV). This is the first release of data from the Southern Hemisphere survey of the Apache Point Observatory Galactic Evolution Experiment 2 (APOGEE-2); new data from APOGEE-2 North are also included. DR16 is also notable as the final data release for the main cosmological program of the Extended Baryon Oscillation Spectroscopic Survey (eBOSS), and all raw and reduced spectra from that project are released here. DR16 also includes all the data from the Time Domain Spectroscopic Survey and new data from the SPectroscopic IDentification of ERosita Survey programs, both of which were co-observed on eBOSS plates. DR16 has no new data from the Mapping Nearby Galaxies at Apache Point Observatory (MaNGA) survey (or the MaNGA Stellar Library "MaStar").
3323. Sloan gi light curves of HAT-TR-205-012
ID:
ivo://CDS.VizieR/J/ApJ/663/573
Title:
Sloan gi light curves of HAT-TR-205-012
Short Name:
J/ApJ/663/573
Date:
21 Oct 2021
Publisher:
CDS
Description:
We derive masses and radii for both components in the single-lined eclipsing binary HAT-TR-205-013, which consists of an F7 V primary and a late M dwarf secondary. The system's period is short, P=2.230736+/-0.000010 days, with an orbit indistinguishable from circular, e=0.012+/-0.021. We demonstrate generally that the surface gravity of the secondary star in a single-lined binary undergoing total eclipses can be derived from characteristics of the light curve and spectroscopic orbit.
3324. Sloan i follow-up light curves of HATS-18
ID:
ivo://CDS.VizieR/J/AJ/152/127
Title:
Sloan i follow-up light curves of HATS-18
Short Name:
J/AJ/152/127
Date:
21 Oct 2021
Publisher:
CDS
Description:
We report the discovery by the HATSouth network of HATS-18b: a 1.980+/-0.077M_J_, 1.337_-0.049_^+0.102^R_J_ planet in a 0.8378day orbit, around a solar analog star (mass 1.037+/-0.047M_{Sun}_ and radius 1.020_-0.031_^+0.057^R_{Sun}_) with V=14.067+/-0.040mag. The high planet mass, combined with its short orbital period, implies strong tidal coupling between the planetary orbit and the star. In fact, given its inferred age, HATS-18 shows evidence of significant tidal spin up, which together with WASP-19 (a very similar system) allows us to constrain the tidal quality factor for Sun-like stars to be in the range of 6.5<~log_10_(Q^*^/k_2_)<~7 even after allowing for extremely pessimistic model uncertainties. In addition, the HATS-18 system is among the best systems (and often the best system) for testing a multitude of star-planet interactions, be they gravitational, magnetic, or radiative, as well as planet formation and migration theories.
3325. Sloan lens ACS survey. V.
ID:
ivo://CDS.VizieR/J/ApJ/682/964
Title:
Sloan lens ACS survey. V.
Short Name:
J/ApJ/682/964
Date:
21 Oct 2021
Publisher:
CDS
Description:
We present the definitive data for the full sample of 131 strong gravitational lens candidates observed with the Advanced Camera for Surveys (ACS) aboard the Hubble Space Telescope by the Sloan Lens ACS (SLACS) Survey. All targets were selected for higher redshift emission lines and lower redshift continuum in a single Sloan Digital Sky Survey (SDSS) spectrum.
3326. Sloan magnitudes for the brightest stars
ID:
ivo://CDS.VizieR/J/other/JAVSO/42.443
Title:
Sloan magnitudes for the brightest stars
Short Name:
J/other/JAVSO/42
Date:
21 Oct 2021
Publisher:
CDS
Description:
Sloan magnitudes are reported for 3969 stars brighter than r'~7. The data are based upon Johnson-Cousins photometry which has been transformed to the Sloan system. Cousins V-Rc and Rc-Ic color indices are also provided as a by-product.
3327. Sloan magnitudes for the brightest stars, V2
ID:
ivo://CDS.VizieR/II/355
Title:
Sloan magnitudes for the brightest stars, V2
Short Name:
II/355
Date:
21 Oct 2021
Publisher:
CDS
Description:
A new version of the Catalog containing Sloan magnitudes for the brightest stars is presented. The accuracy of the data indicates that the Catalog is a reliable source of comparison star magnitudes for astronomical photometry. Version 2 complements the APASS database of fainter stars.
3328. SLoWPoKES catalog
ID:
ivo://CDS.VizieR/J/AJ/139/2566
Title:
SLoWPoKES catalog
Short Name:
J/AJ/139/2566
Date:
21 Oct 2021
Publisher:
CDS
Description:
We present the Sloan Low-mass Wide Pairs of Kinematically Equivalent Stars (SLoWPoKES), a catalog of 1342 very-wide (projected separation >~500AU), low-mass (at least one mid-K to mid-M dwarf component) common proper motion pairs identified from astrometry, photometry, and proper motions in the Sloan Digital Sky Survey. A Monte Carlo-based Galactic model is constructed to assess the probability of chance alignment for each pair; only pairs with a probability of chance alignment <=0.05 are included in the catalog.
3329. SLoWPoKES-II catalog
ID:
ivo://CDS.VizieR/J/AJ/150/57
Title:
SLoWPoKES-II catalog
Short Name:
J/AJ/150/57
Date:
21 Oct 2021
Publisher:
CDS
Description:
We present the Sloan Low-mass Wide Pairs of Kinematically Equivalent Stars (SLoWPoKES)-II catalog of low-mass visual binaries identified from the Sloan Digital Sky Survey (SDSS) by matching photometric distances. The candidate pairs are vetted by comparing the stellar information. The candidate pairs are vetted by comparing the stellar density at their respective Galactic positions to Monte Carlo realizations of a simulated Milky Way. In this way, we are able to identify large numbers of bona fide wide binaries without the need for proper motions. Here, 105537 visual binaries with angular separations of ~1-20" were identified, each with a probability of chance alignment of {<=}5%. This is the largest catalog of bona fide wide binaries to date, and it contains a diversity of systems--in mass, mass ratios, binary separations, metallicity, and evolutionary states--that should facilitate follow-up studies to characterize the properties of M dwarfs and white dwarfs. There is a subtle but definitive suggestion of multiple populations in the physical separation distribution, supporting earlier findings. We suggest that wide binaries are composed of multiple populations, most likely representing different formation modes. There are 141 M7 or later wide binary candidates, representing a seven-fold increase over the number currently known. These binaries are too wide to have been formed via the ejection mechanism. Finally, we found that 6% of spectroscopically confirmed M dwarfs are not included in the SDSS STAR catalog; they are misclassified as extended sources due to the presence of a nearby or partially resolved companion. The SLoWPoKES-II catalog is publicly available to the entire community on the World Wide Web via the Filtergraph data visualization portal.
3330. SLoWPoKES. II. Properties of wide, low-mass binaries
ID:
ivo://CDS.VizieR/J/AJ/143/67
Title:
SLoWPoKES. II. Properties of wide, low-mass binaries
Short Name:
J/AJ/143/67
Date:
21 Oct 2021
Publisher:
CDS
Description:
We report the results from spectroscopic observations of 113 ultra-wide, low-mass binary systems, largely composed of M0-M3 dwarfs, from the SLoWPoKES catalog of common proper motion pairs identified in the Sloan Digital Sky Survey (Dhital et al., 2010, Cat. J/AJ/139/2566). Radial velocities of each binary member were used to confirm that they are comoving and, consequently, to further validate the high fidelity of the SLoWPoKES catalog. Ten stars appear to be spectroscopic binaries based on broad or split spectral features, supporting previous findings that wide binaries are likely to be hierarchical systems. We measured the H{alpha} equivalent width of the stars in our sample and found that components of 81% of the observed pairs have similar H{alpha} levels. The difference in H{alpha} equivalent width among components with similar masses was smaller than the range of H{alpha} variability for individual objects. We confirm that the Lepine et al. (2007ApJ...669.1235L) {zeta}-index traces iso-metallicity loci for most of our sample of M dwarfs. However, we find a small systematic bias in {zeta}, especially in the early-type M dwarfs. We use our sample to recalibrate the definition of {zeta}. While representing a small change in the definition, the new {zeta} is a significantly better predictor of iso-metallicity for the higher-mass M dwarfs.