86 datasets found

Keywords: Accretion

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  • Wind-driving protostellar accretion discs

    We continue our study of weakly ionized protostellar accretion discs that are threaded by a large-scale magnetic field and power a centrifugally driven wind. It has been argued...
  • WISE Green Objects massive YSOs in the Gal. plane

    Massive young stellar objects (MYSOs) play a crucial role in star formation. Given that MYSOs were previously identified based on the extended structure and the observational...
  • YSOs in LDN 1641 with Hectochelle spectra

    We investigate the young stellar objects (YSOs) in the Lynds 1641 (L1641) cloud using multi-wavelength data including Spitzer, WISE, the Two Micron All Sky Survey, and XMM...
  • PMS stars in the Cepheus flare region

    We present results of optical spectroscopic and BVR_C_I_C_ photometric observations of 77 pre-main-sequence (PMS) stars in the Cepheus flare region. A total of 64 of these are...
  • Mass accretion rates of PMS stars. VI. LH95 in LMC

    We report on the accretion properties of low-mass stars in the LH 95 association within the Large Magellanic Cloud. Using noncontemporaneous wideband optical and narrowband...
  • SEAMBHs IX. 10 new H{beta} light curves

    As one paper in a series reporting on a large reverberation mapping campaign of super-Eddington accreting massive black holes (SEAMBHs) in active galactic nuclei (AGNs), we...
  • Protoplanetary disk data in Cha I and Lupus

    In this paper, we investigate the relation between disk mass and mass accretion rate to constrain the mechanism of angular momentum transport in protoplanetary disks. We find a...
  • SEAMBHs. V. The third year

    This paper reports results of the third-year campaign of monitoring super-Eddington accreting massive black holes (SEAMBHs) in active galactic nuclei (AGNs) between 2014 and...
  • Models of thermonuclear X-ray bursters

    Using the KEPLER 1D hydrodynamics code (Woosley et al. 2004ApJS..151...75W), 464 models of thermonuclear X-ray bursters were performed across a range of accretion rates and...
  • RM AGNs accretion rates and BH masses

    Broad emission lines in active galactic nuclei (AGNs) mainly arise from gas photoionized by continuum radiation from an accretion disk around a central black hole. The shape of...
  • SEAMBHs IV. H{beta} time lags

    We have completed two years of photometric and spectroscopic monitoring of a large number of active galactic nuclei (AGNs) with very high accretion rates. In this paper, we...
  • VLA, ALMA and SMA monitoring of Sgr A*

    We report new observations with the Very Large Array, Atacama Large Millimeter Array, and Submillimeter Array at frequencies from 1.0 to 355GHz of the Galactic Center black...
  • Polarization and photometry for blazar W Comae

    An R-band photopolarimetric variability analysis of the TeV bright blazar W Comae between 2008 February 28 and 2013 May 17 is presented. The source showed a gradual tendency to...
  • Spitzer/IRAC Sgr A* light curve data

    We present the first detection from the Spitzer Space Telescope of 4.5 {mu}m variability from Sgr A, the emitting source associated with the Milky Way's central black hole. The...
  • SEAMBHs. II. Continuum and Hbeta LCs

    This is the second in a series of papers reporting on a large reverberation mapping (RM) campaign to measure black hole (BH) mass in high accretion rate active galactic nuclei...
  • SEAMBHs. I. Mrk 142, Mrk 335, and IRAS F12397+3333

    We report first results from a large project to measure black hole (BH) mass in high accretion rate active galactic nuclei (AGNs). Such objects may be different from other AGNs...
  • Chandra observations of SPT-SZ clusters

    We present first results on the cooling properties derived from Chandra X-ray observations of 83 high-redshift (0.3<z<1.2) massive galaxy clusters selected by their...
  • IR spectroscopy in Orion A: transitional disks

    Transitional disks are protoplanetary disks around young stars, with inner holes or gaps which are surrounded by optically thick outer, and often inner, disks. Here we present...
  • Mass accretion rates from HST in the ONC

    The present observational understanding of the evolution of the mass accretion rates (dM/dt_acc_) in pre-main-sequence stars is limited by the lack of accurate measurements of...
  • Accretion rate of AGNs from COSMOS surveys

    We show how accretion rate governs the physical properties of a sample of unobscured broad-line, narrow-line, and lineless active galactic nuclei (AGNs). We avoid the systematic...
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