A5035399113- Galaxies: Formation, Evolution, Phenomena
- Astronomy and Astrophysical Research
- Stellar, planetary, and galactic studies
- Astrophysics and Star Formation Studies
- Gamma-ray bursts and supernovae
- Astrophysical Phenomena and Observations
- Astronomical Observations and Instrumentation
- Astrophysics and Cosmic Phenomena
- Scientific Research and Discoveries
- Advanced Photocatalysis Techniques
- Adaptive optics and wavefront sensing
- Radio Astronomy Observations and Technology
- Advanced Vision and Imaging
- Pulsars and Gravitational Waves Research
- CCD and CMOS Imaging Sensors
- Plant Water Relations and Carbon Dynamics
- Copper-based nanomaterials and applications
- Remote Sensing in Agriculture
- Electrocatalysts for Energy Conversion
- Geochemistry and Geologic Mapping
- Spectroscopy and Laser Applications
- High Entropy Alloys Studies
- Aluminum Alloys Composites Properties
- Geophysics and Gravity Measurements
- Impact of Light on Environment and Health
Institute for Biomedicine
2025
Xiamen Chang Gung Hospital
2025
University of Science and Technology of China
2015-2024
Tianjin University of Technology and Education
2023-2024
North Minzu University
2023-2024
National Astronomical Observatories
2000-2024
Chinese Academy of Sciences
2002-2024
State Ethnic Affairs Commission
2023-2024
Space Engineering University
2023-2024
China Tobacco
2010-2024
We present the Spectroscopic Imaging survey in near-infrared (near-IR) with SINFONI (SINS) of high-redshift galaxies. With 80 objects observed and 63 detected at least one rest-frame optical nebular emission line, mainly Hα, SINS represents largest spatially resolved gas kinematics, morphologies, physical properties star-forming galaxies z ∼ 1–3. describe selection targets, observations, data reduction. then focus on "SINS Hα sample," consisting 62 rest-UV/optically selected sources 1.3 <...
The Large sky Area Multi-Object Spectroscopic Telescope (LAMOST) General Survey is a spectroscopic survey that will eventually cover approximately half of the celestial sphere and collect 10 million spectra stars, galaxies QSOs. Objects both in pilot first year general are included LAMOST First Data Release (DR1). started October 2011 ended June 2012, data have been released to public as Pilot August 2012. September completed its operation 2013. DR1 includes total 1202 plates containing...
Many stellar models present difficulties in reproducing basic observational relations of very low mass stars (VLMS), including the mass--radius relation and optical colour--magnitudes cool dwarfs. Here, we improve PARSEC on these points. We implement T--tau from PHOENIX BT-Settl model atmospheres as outer boundary conditions code, finding that this change alone reduces discrepancy 8 to 5 per cent. compare with multi--band photometry clusters Praesepe M67, showing use clearly improves...
We complement the parsec data base of stellar evolutionary tracks with new models massive stars, from pre-main-sequence phase to central carbon ignition. consider a broad range metallicities, 0.0001 ≤ Z 0.04 and initial masses up Mini = 350 M⊙. The main difference respect our previous stars is adoption recent formalizm accounting for mass-loss enhancement when ratio Eddington luminosity, Γe, approaches unity. With this formalizm, are able reproduce Humphreys–Davidson limit observed in...
We compile a new sample of 115 nearby, non-Seyfert galaxies spanning wide range star formation activities, from starburst to nearly dormant, based on ultraviolet (UV) observations with various satellites. combine these infrared (IR) study the relation between ratio total far-IR UV luminosities and spectral slope (the `IRX-UV' relation). show that, at fixed slope, quiescent star-forming in our have systematically lower than galaxies. The strengths indices sensitive history, such as 4000 A...
We present a simple set of kinematic criteria that can distinguish between galaxies dominated by ordered rotational motion and those involved in major merger events. Our are based on the dynamics warm ionized gas (as traced Hα) within galaxies, making this analysis accessible to high-redshift systems, whose kinematics primarily traceable through emission features. Using method kinemetry (developed Krajnović coworkers), we quantify asymmetries both velocity dispersion maps gas, resulting...
Subaru observations of A1689 (z=0.183) are used to derive an accurate, model-independent mass profile for the entire cluster, r<2 Mpc/h, by combining magnification bias and distortion measurements. The projected steepens quickly with increasing radius, falling away zero at r~1.0 well short anticipated virial radius. Our accurately matches onto inner profile, r<200 kpc/h, derived from deep HST/ACS images. combined ACS information is fitted NFW mass, (1.93 \pm 0.20)10^15 M_sun, surprisingly...
We report evidence of a fully established galaxy cluster at z=2.07, consisting ~20sigma overdensity red, compact spheroidal galaxies spatially coinciding with extended X-ray emission detected XMM-Newton. use VLT VIMOS and FORS2 spectra deep Subaru, Spitzer imaging to estimate the redshift structure from prominent z=2.07 spectroscopic spike emission-line galaxies, concordant accurate 12-band photometric redshifts red galaxies. Using NICMOS Keck AO observations, we find that have elliptical...
Abstract We present the first results from ongoing Lyman Alpha Galaxies in Epoch of Reionization (LAGER) project, which is largest narrowband survey for z ∼ 7 galaxies to date. Using a specially built filter NB964 superb large-area Dark Energy Camera (DECam) on NOAO/CTIO 4 m Blanco telescope, LAGER has collected 34 hr imaging data 3 deg 2 COSMOS field. have identified 23 Ly α Emitter candidates at = 6.9 central 2-deg region, where DECam and public multi-band images exist. The resulting...
We present the results of new near-IR spectroscopic observations passive galaxies at z ≳ 1.4 in a concentration BzK-selected COSMOS field. The have been conducted with Subaru/MOIRCS, and resulted absorption lines and/or continuum detection for 18 out 34 objects. This allows us to measure redshifts sample that is almost complete KAB = 21. photometric are found fair agreement overall redshifts, standard deviation ∼0.05; however, ∼30% objects systematically underestimated by up ∼25%. show these...
We present a catalog of photometric redshifts and stellar masses for galaxies from imaging surveys serving the Dark Energy Spectroscopic Instrument project. The footprints cover an area over 14,000 deg2. This contains about 0.17 billion morphologically classified with r < 23 mag. It covers redshift range z 1 mass . A total five bands are used, including three optical filters (g, r, z) two infrared (Wide-field Infrared Survey Explorer W1 W2). use k-nearest neighbors local linear regression...
The Five-hundred-meter Aperture Spherical radio Telescope (FAST) has the largest aperture and a 19-beam L-band receiver, making it powerful for investigating neutral hydrogen atomic gas (HI) in universe. We present HiFAST (https://hifast.readthedocs.io), dedicated, modular, self-contained calibration imaging pipeline processing HI data of FAST. consists frequency-dependent noise diode calibration, baseline fitting, standing wave removal using an FFT-based method, flux density stray radiation...
Abstract The unluckiest star orbits a supermassive black hole elliptically. Every time it reaches the pericenter, shallowly enters tidal radius and gets partially tidally disrupted, producing series of flares. Confirmation repeated partial disruption event (pTDE) requires not only evidence to rule out other types transients but also proof that one is involved, as TDEs from multiple stars can produce similar In this Letter, we report discovery pTDE, AT 2022dbl. quiescent galaxy at z = 0.0284,...
We have combined deep BRIz' imaging over 2x940 arcmin^2 fields obtained with the Suprime-Cam on Subaru telescope JKs SOFI camera at New Technology Telescope to search for high-redshift massive galaxies. K-band selected galaxies been identified an area of ~920 K_Vega=19.2, which 320 are complete K_Vega=20. The BzK selection technique was used obtain samples ~500 candidate star-forming (sBzKs) and ~160 massive, passively-evolving (pBzKs), both 1.4 5 criterion we also ~850 extremely red objects...
We analyze a sample of galaxies with stellar masses greater than $10^{10} M_{\odot}$ and redshifts in the range $0.025<z<0.05$ for which HI mass measurements are available from GALEX Arecibo SDSS Survey (GASS) or Legacy Fast ALFA survey (ALFALFA). At given value $M_*$, our consists primarily that more HI-rich average. constructed series three control samples comparison these galaxies. As expected, differ strongly same selected without regard to content. The majority differences attributable...
We analyze the role of bars in build-up central mass concentrations massive, disk galaxies. Our parent sample consists 3757 face-on galaxies with redshifts between 0.01 and 0.05, selected from seventh Data Release Sloan Digital Sky Survey. 1555 are identified using position angle ellipticity profiles $i$-band light. compare ratio specific star formation rate measured 1-3 kpc region galaxy to that for whole galaxy. Galaxies strong have centrally enhanced formation; degree enhancement depends...
Classification of galaxy morphology is a challenging but meaningful task for the enormous amount data produced by next-generation telescope. By introducing adaptive polar coordinate transformation, we develop rotationally invariant supervised machine learning (SML) method that ensures consistent classifications when rotating images, which always required to be satisfied physically difficult achieve algorithmically. The compared with conventional augmentation including additional rotated...
Abstract We present a statistical study of the properties diffuse H i in 10 nearby galaxies, comparing detected by single-dish telescope FAST (FEASTS program) and interferometer Very Large Array (THINGS program), respectively. The THINGS observation missed with median 23% due to short-spacing problem interferometry limited sensitivity. extract subtracting dense , which is obtained from data uniform flux-density threshold, total FAST. Among sample, diffuse-H fraction 34%, more found galaxies...