6,538 datasets found

Keywords: Optical astronomy

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  • 23 low mass stars photometry

    Observations of low-mass stars have frequently shown a disagreement between observed stellar radii and radii predicted by theoretical stellar structure models. This "`radius...
  • (Sub)Stellar companions of exoplanet hosts

    We conduct a survey, which explores the data releases of the ESA-Gaia mission, in order to investigate the multiplicity of exoplanet hosts at distances of less than 625pc around...
  • DESI Peculiar Velocity survey

    We describe the target selection and characteristics of the DESI Peculiar Velocity Survey, the largest survey of peculiar velocities (PVs) using both the fundamental plane (FP)...
  • The Swift/UVOT+MaNGA (SwiM) v4.1 catalog

    We present the the new Swift/UVOT+MaNGA (SwiM) catalog (SwiM_v4.1). SwiM_v4.1 is designed to study star formation and dust attenuation within nearby galaxies given the unique...
  • SDSS Seyfert 1.9 galaxies with Ha emission line fit

    The traditional classification for a subclass of the Seyfert galaxies is visual inspection or using a quantity defined as a flux ratio between the Balmer line and forbidden...
  • Revised GLADE & MANGROVE sample with HyperLEDA

    To develop galaxy-targeting approaches, the gravitational-wave community built a catalog of stellar mass in the local universe based on the Two Micron All Sky Survey (2MASS)...
  • Simultaneous X-ray & gamma obs. of Mrk421 in 2013

    We report on a multiband variability and correlation study of the TeV blazar Mrk 421 during an exceptional flaring activity observed from 2013 April 11 to 19. The study uses,...
  • Spectroscopic and transit obs. of WASP-148

    We present spectroscopic measurements of the Rossiter-McLaughlin effect for WASP-148b, the only known hot Jupiter with a nearby warm-Jupiter companion, from the WIYN/NEID and...
  • Optical phot. and sp. monitoring of SN 2020sck

    We present optical UBVRI photometry and low-to-medium resolution spectroscopic observations of type Iax supernova SN 2020sck spanning -5.5 days to +67 days from maximum light in...
  • Adaptative optic images of WISE YSO candidates

    The Disk Detective citizen science project aims to find new stars with excess 22{mu}m emission from circumstellar dust in the AllWISE data release from the Wide-field Infrared...
  • A VLA study of high-redshift GRBs. II. GRB140304A

    We present detailed multifrequency, multiepoch radio observations of GRB 140304A at z=5.283 from 1 to 86GHz and from 0.45 to 89days. The radio and millimeter data exhibit...
  • SALT spectrum of CXOU J005440.5-374320

    We investigate the nature of CXOU J005440.5-374320 (J0054), a peculiar bright (~4x10^39^erg/s) and soft X-ray transient in the spiral galaxy NGC300 with a six-hour periodic flux...
  • TOI-5398 spectroscopic time-series

    Short-period giant planets (P<~10-days, Mp>0.1Mj) are frequently found to be solitary compared to other classes of exoplanets. Small inner companions to giant planets with...
  • Age resolution in stellar population synthesis

    As the reconstruction of the star-formation histories (SFH) of galaxies from spectroscopic data becomes increasingly popular, we explore the best age resolution achievable with...
  • DESI Legacy Imaging Surveys DR8

    We present photometric redshift (photo-z) estimates for the Dark Energy Spectroscopic Instrument (DESI) Legacy Imaging Surveys, currently the most sensitive optical survey...
  • Leveraging HST with MUSE II

    Ancient (>10Gyr) globular clusters (GCs) show chemical abundance variations in the form of patterns among certain elements, e.g. N correlates with Na and anticorrelates with...
  • M2FS & Hectochelle spectra of dSph in the MW halo

    We present spectroscopic data for 16369 stellar targets within and/or toward 38 dwarf spheroidal galaxies and faint star clusters within the Milky Way halo environment. All...
  • Unobscured QSOs in ecliptic poles from KMTNet & PS1

    We search for quasi-stellar objects (QSOs) in a wide area of the south ecliptic pole (SEP) field, which has been and will continue to be intensively explored through various...
  • Continuous opt. monitoring of BL Lac from 2009-2021

    We developed a multiregion radiation model for the evolution of flux and spectral index with time. In this model, each perturbation component in the jet produces an independent...
  • Kinematics of young open clusters & O-B2-type stars

    Using young open clusters and O-B2-type stars in Gaia Data Release 3, we investigate the kinematics of the local spiral structure. In general, the young sources in the outer...
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