4,189 datasets found

Keywords: spectroscopy

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  • Galaxies with redshifts in the vicinity of A426

    We study the global kinematics of the Perseus galaxy cluster (A426) at redshift z=0.017 using a large sample of galaxies from our new MMT/Hectospec spectroscopic observation for...
  • Ellipticals and brightest cluster galaxies param.

    We investigate the roles of major and minor mergers during brightest cluster galaxy (BCG) assembly using surface brightness profiles, line indices, and fundamental plane...
  • Multiwavelength properties of unobscured AGN

    We present one of the largest multiwavelength studies of simultaneous optical-to-X-ray spectral energy distributions (SEDs) of unobscured (N_H<10^22cm^-2) active galactic...
  • Changing-look AGN. I. Main sequence transition

    This paper is the first in a series of papers that prepare and analyze spectral and other properties for a database of already-discovered changing-look active galactic nuclei...
  • BH masses for AGNs behind the MCs from MQS & OGLE

    We use the spectroscopic data collected by the Magellanic Quasars Survey (MQS) and the photometric V- and I-band data from the Optical Gravitational Lensing Experiment (OGLE) to...
  • Chemical composition of planetary hosts

    Accurate atmospheric parameters and chemical composition of planet hosts play a major role in characterizing exoplanets and understanding their formation and evolution. Our...
  • PDS 70 disk reduced JWST/MIRI MRS spectrum

    The inner disk of the young star PDS 70 may be a site of rocky planet formation, with two giant planets detected further out. Recently, JWST/MIRI MRS observations have revealed...
  • 2MASS J15594729+4403595 light curves and spectra

    RACE-OC (Rotation and ACtivity Evolution in Open Clusters) is a project aimed at characterizing the rotational and magnetic activity properties of the late-type members of open...
  • NLS1s and BLAGNs PAH

    The differences between Narrow Line Seyfert 1 galaxies (NLS1s) and Broad Line AGNs (BLAGNs) are not completely understood; it is thought that they may have different...
  • Recent star formation galaxies sample

    On the basis of the Galaxy Evolution Explore (GALEX) ultraviolet (UV) data, many studies have demonstrated that recent star formation (RSF) is common in early-type galaxies. In...
  • Mid-IR PAH features of SINGS galaxies

    We combined mapping-mode mid-infrared Spitzer spectra with complementary infrared imaging to perform a spatially resolved study of polycyclic aromatic hydrocarbon (PAH) emission...
  • UV & opt. phot. & spectra of Type Ia SN2011aa

    We present optical observations and Monte Carlo radiative transfer modeling of the Type Ia supernova (SN Ia) SN 2011aa. With a {Delta}m_15_(B) of 0.59+/-0.07mag and a peak...
  • AT 2019qyl UV-to-IR photometry and spectroscopy

    Nova eruptions, thermonuclear explosions on the surfaces of white dwarfs (WDs), are now recognized to be among the most common shock-powered astrophysical transients. We present...
  • M-subdwarf research. II. Catalog of ~3000 subdwarfs

    We applied the revised M subdwarf classification criteria discussed in Zhang+ 2019, J/ApJS/240/31 (Paper I) to Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST)...
  • EX Lup ESPaDOnS and SPIRou spectra

    EX Lupi is the prototype of EX Lup-type stars, meaning classical T Tauri stars (cTTSs) showing luminosity bursts and outbursts of 1 to 5 magnitudes lasting for a few months to a...
  • High-redshift quasars spectra

    Despite the increasing prevalence of radio-loud (RL) sources at cosmic noon, our understanding of the underlying physics that governs the accretion disc outflows in these...
  • Optical spectra of Mira variables

    The details of the mass-loss process in the late stages of low- and intermediate-mass stellar evolution are not well understood, in particular its dependence on stellar...
  • Optical spectra of PSR J1023+0038

    Transitional millisecond pulsars (tMSPs) represent a dynamic category of celestial sources that establish a crucial connection between low-mass X-ray binaries and millisecond...
  • Restricted sample of Gaia-ESO open clusters

    Recent evidence from spectroscopic surveys points towards the presence of a metal-poor, young stellar population in the low-alpha, chemically thin disk. In this context, the...
  • JADES NIRCam & NIRSpec phot. & line fluxes cat. (DR1-DR3)

    JWST has revolutionized the field of extragalactic astronomy with its sensitive and high-resolution infrared view of the distant Universe. Adding to the new legacy of JWST...
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