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B-band photometry of BL Lac object ON 231
The results of 19-year optical monitoring of ON 231 are presented. Photographic B-band observations were obtained during 123 nights from April 1972 to March 1990 as part of the... -
BVRI photometry of RC galaxies
BVRI data are presented for the majority of steep-spectrum objects in the RATAN-600 7.6cm catalog (RC) catalog with m(R)<23.5mag. Previously developed programs are applied to... -
UBVR and spectroscopic observations of CI Cam
Photoelectric (UBVR) observations in 1998-2001 and medium-resolution spectroscopy obtained in the SAO in the same period for the B[e]/X-ray transient CI Cam display cyclic... -
Photometry and polarimetry of Ae star VV Ser
Results of long-term photometric and polarimetric observations of the classical Herbig Ae star VV Ser, performed at the Crimean Astrophysical Observatory as part of a program of... -
Photopolarimetric activity of SV Cep
The results of the eleven-years (1987-98) photopolarimetric patrol observations of Herbig Ae star SV Cep are presented. Only one deep brightness minimum of star were observed... -
IUE survey of H I Ly{alpha} absorption. I.
We measure Galactic interstellar neutral hydrogen column densities by analyzing archival interstellar Ly{alpha} absorption line data toward 554 B2 and hotter stars observed at... -
MC massive stars IMF. I.
UBV CCD photometry has been obtained for 14 OB associations in the Magellanic Clouds using the University of Toronto's 0.6m telescope and the Carnegie Institution of... -
UBV photometry of HK survey stars
Photoelectric UBV observations of 1782 stars are used to explore properties of the HK objective-prism survey conducted by Beers, Preston, and Shectman with the Curtis-Schmidt... -
Sp. follow-up of low-metallicity S-PLUS stars
This work presents the medium-resolution (R~1500) spectroscopic follow-up of 522 low-metallicity star candidates from the Southern Photometric Local Universe Survey (S-PLUS).... -
NGT gri monitoring of the FSRQ 3C 454.3
Based on the database monitored by the 1.26m National Astronomical Observatory-Guangzhou University Infrared/Optical Telescope, we studied the optical variabilities of FSRQ... -
Phot. metallicity prediction of RR Lyrae stars
RR Lyrae stars are useful chemical tracers thanks to the empirical relationship between their heavy-element abundance and the shape of their light curves. However, the... -
SMUDGes. III. The Southern catalog
We present a catalog of 5598 ultra-diffuse galaxy (UDG) candidates with effective radius r_e_>5.3" distributed throughout the southern portion of the DESI Legacy Imaging... -
The COSMOS2020 catalog
The Cosmic Evolution Survey (COSMOS) has become a cornerstone of extragalactic astronomy. Since the last public catalog in 2015, a wealth of new imaging and spectroscopic data... -
SMUDGes. II. Expanded survey & Stripe 82 cat.
We present 226 large ultra-diffuse galaxy (UDG) candidates (r_e_>5.3, {mu}0,g>24mag/arcsec^2^) in the SDSS Stripe 82 region recovered using our improved procedure... -
V and R -band light curves of BZCAT blazars
In an optical monitoring program to characterize the variability properties of blazars, we observed 10 sources from the Roma-BZCAT catalog for 26 nights in V and R bands during... -
Multiwavelength obs. of Miras in the LMC
We comprehensively study the variability of Miras in the Large Magellanic Cloud by simultaneously analyzing light curves in 14 bands in the range of 0.5-24{mu}m. We model over... -
XMM-SERVS survey: X-ray sources for W-CDF-S & ELAIS-S1
We present the X-ray point-source catalogs in two of the XMM-Spitzer Extragalactic Representative Volume Survey (XMM-SERVS) fields, W-CDF-S (4.6deg^2^) and ELAIS-S1 (3.2deg^2^),... -
The PTF core-collapse SN host-galaxy sample. I.
Several thousand core-collapse supernovae (CCSNe) of different flavors have been discovered so far. However, identifying their progenitors has remained an outstanding open... -
Ages of field stars from white dwarf comp. in Gaia
We analyze 4050 wide binary star systems involving a white dwarf (WD) and usually a main-sequence (MS) star, drawn from the large sample assembled by Tian+ (2020, J/ApJS/246/4).... -
Galaxy clusters from the DESI surveys. I.
Based on the photometric redshift catalog of Zou+ (2019ApJS..242....8Z), we apply a fast clustering algorithm to identify 540432 galaxy clusters at z<=1 in the DESI legacy...
