J. Y. Wei

Publication List Details

Period

1998 - 2009

Number

32

Co-Authors

GRB 070518: A Gamma-ray Burst with Optically Dim Luminosity (2009)

Xin, L. P., Zheng, W. K., Wang, J., Deng, J. S., Urata, Y., Qiu, Y. L., ...

We present our optical observations of {\em Swift} GRB 070518 afterglow obtained at the 0.8-m Tsinghua University-National Astronomical Observatory of China telescope (TNT) at Xinglong Observatory....

Understanding the AGN-Host Connection in Broad Mgii Emission Selected AGN-Host Hybrid Qausars (2009)

Wang, J., Wei, J. Y.

We study the issue of AGN-host connection in intermediate-z (1.2>z>0.4) galaxies with hybrid spectra (hybrid QSOs for short). The observed spectra redward of the Balmer limit are dominated by...

Two Physically Distinct Populations of Low-Ionization Nuclear Emission-Line Regions (2009)

Wang, J., Wei, J. Y., Xiao, P. F.

The nature of Low-ionization Nuclear Emission-line Regions (LINERs) has been an open question for a long time. We study the properties of LINERs from several different aspects. The LINERs are found...

Accretion Properties of A Sample of Hard X-ray ( (2008)

Mao, J. Wang; Y. F., Wei, J. Y.

We examine the accretion properties in a sample of 42 hard (3-60keV) X-ray selected nearby broad-line AGNs. The energy range in the sample is harder than that usually used in the similar previous...

Understanding AGN-Host Connection in Partially Obscured Active Galactic Nuclei. Part I: The Nature of AGN+HII Composites (2008)

Wang, J., Wei, J. Y.

The goal of our serial papers is to examine the evolutionary connection between AGN and star formation in its host galaxy in the partially obscured AGNs (i.e., Seyfert 1.8 and 1.9 galaxies). Taking...

The lithium-rotation correlation for WTTS in Taurus-Auriga (2006)

Xing, L. F., Shi, J. R., Wei, J. Y.

Surface lithium abundance and rotation velocity can serve as powerful and mutually complementary diagnostics of interior structure of stars. So far, the processes responsible for the lithium...

Evolutionary Implications from SDSSJ085338.27+033246.1: A Spectacular N arrow-Line Seyfert 1 Galaxy with Young Post-starburst (2006)

Wang, J., Wei, J. Y.

We analyze the physical properties of post-starburst AGN SDSS J085338.27+033246.1 according to its optical spectrum and discuss its implications on AGN's evolution. The spectra PCA method is...

A Sample of IRAS Infrared-Selected Seyfert 1.5 Galaxies: Infrared-Color $\alpha(60,25)$ Dominated Eigenvector 1 (2005)

Wang, J., Wei, J. Y., He, X. T.

The well-documented E1 relationships are first extended to infrared color $\alpha(60,25)$ and flux ratio [OIII]/H$\beta_{\rm{n}}$ by comparing emission line properties to continuum properties in...

Variability of Optical \ion{Fe}{ii} Complex in Narrow-Line Seyfert 1 Galaxy NGC 4051 (2005)

Wang, J., Wei, J. Y., He, X. T.

The variability of optical FeII blends in NGC 4051 is examined from spectra extracted from the AGN Watch program.In our analysis, the FeII complex are subtracted and measured with the following...

Variability of Broad and Blueshifted Component of [OIII]$\lambda$5007 in IZWI (2005)

Wang, J., Wei, J. Y., He, X. T.

Although the existence of asymmetrical profile of [OIII]$\lambda$5007 has been discovered for ages, its filiation and physics are poorly understood. Two new spectra of I ZWI taken on Nov 16, 2001 and...

An AGN Sample with High X-ray-to-optical Flux Ratio from RASS II.Optical Emission Line Properties of Seyfert 1 Type AGN (2003)

Xu, D. W., Komossa, Stefanie, Wei, J. Y., Qian, Y., Zheng, X. Z.

This work studies the optical emission line properties of a sample of 155 low-redshift bright X-ray selected ROSAT Seyfert~1 type AGN for which adequate signal-to-noise ratio spectroscopic...

1RXS J232953.9+062814: a New SU UMa Dwarf Nova below the Period Minimum (2001)

Wei, J. Y., Jiang, X. J., Xu, D. W., Zhou, A. Y., Hu, J. Y.

1RXS J232953.9+062814 was identified as a cataclysmic variable by Wei et al. (1999). Four low-resolution spectra of 1RXS J232953.9+062814 were obtained by using the 2.16-m telescope of the National...

New Wolf-Rayet Galaxies with Detection of WC Stars (1998)

Huang, J. H., Gu, Q. S., Ji, L., Li, W. D., Wei, J. Y., Zheng, W.

We report the discovery of two new Wolf-Rayet (WR) galaxies: Mrk~1039, and F08208$+$2816. Two broad WR bumps at 5808\AA~ and 4650\AA~ indicate the presence of WCE and WNL star population in all two...

STEPS TOWARD DETERMINATION OF THE SIZE AND STRUCTURE OF THE BROAD-LINE REGION IN ACTIVE GALACTIC NUCLEI. XII. GROUND-BASED MONITORING OF 3C 390.3 (1998)

Dietrich, M., Peterson, B.M., Albrecht, P., Altmann, M., Barth, A.J., Bennie, P.J., ...

Results of a ground-based optical monitoring campaign on 3C 390.3 in 1994-1995 are presented. The broadband fluxes (B, V , R, and I), the spectrophotometric optical continuum flux Fλ(5177 Å),...

Steps toward Determination of the Size and Structure of the Broad-Line Region in Active Galactic Nuclei. XII. Ground-based Monitoring of 3C 390.3 (1998)

Dietrich, M, Peterson, B. M, Albrecht, P, Altmann, M, Barth, A. J, Bennie, P. J, ...

Results of a ground-based optical monitoring campaign on 3C 390.3 in 1994-1995 are presented. The broadband fluxes (B, V, R, and I), the spectrophotometric optical continuum flux F lambda (5177 A),...

Cell-by-cell scanning of whole mitochondrial genomes in aged human heart reveals a significant fraction of myocytes with clonally expanded deletions.

Khrapko, K, Bodyak, N, Thilly, W G, Van Orsouw, N J, Zhang, X, Coller, H A, ...

Quantitative information on the cell-to-cell distribution of all possible mitochondrial DNA (mtDNA) mutations in young and aged tissues is needed to assess the relevance of these mutations to the...

In vivo expression of mammalian BiP ATPase mutants causes disruption of the endoplasmic reticulum.

Hendershot, L M, Wei, J Y, Gaut, J R, Lawson, B, Freiden, P J, Murti, K G

BiP possesses ATP binding/hydrolysis activities that are thought to be essential for its ability to chaperone protein folding and assembly in the endoplasmic reticulum (ER). We have produced a series...

Chronic exercise training protects aged cardiac muscle against hypoxia.

Wei, J Y, Li, Y, Lincoln, T, Grossman, W, Mendelowitz, D

To test the hypothesis that chronic exercise may improve tolerance to hypoxia in aged hearts, we compared cardiac function of exercised rats to that of their age-matched, nonexercised controls. Right...

Effect of age on myocardial adaptation to volume overload in the rat.

Isoyama, S, Grossman, W, Wei, J Y

To test the hypothesis that the capacity for left ventricular (LV) adaptation to volume overload might diminish with age, we examined the hemodynamics and degree of myocardial hypertrophy in response...

Age-related differences in the expression of proto-oncogene and contractile protein genes in response to pressure overload in the rat myocardium.

Takahashi, T, Schunkert, H, Isoyama, S, Wei, J Y, Nadal-Ginard, B, Grossman, W, ...

Cardiac adaptation to hemodynamic stress involves both quantitative (hypertrophy) and qualitative (pattern of gene expression) changes. Our previous studies have shown that advancing age in the rat...

Yield of routine annual laboratory screening in the institutionalized elderly.

Domoto, K, Ben, R, Wei, J Y, Pass, T M, Komaroff, A L

We examined the yield of a battery of 19 screening laboratory tests performed routinely in 70 functionally intact patients, averaging 82.6 years of age and residing at a chronic care facility. The 70...

Cell-by-cell scanning of whole mitochondrial genomes in aged human heart reveals a significant fraction of myocytes with clonally expanded deletions.

Khrapko, K, Bodyak, N, Thilly, W G, Van Orsouw, N J, Zhang, X, Coller, H A, ...

Quantitative information on the cell-to-cell distribution of all possible mitochondrial DNA (mtDNA) mutations in young and aged tissues is needed to assess the relevance of these mutations to the...

In vivo expression of mammalian BiP ATPase mutants causes disruption of the endoplasmic reticulum.

Hendershot, L M, Wei, J Y, Gaut, J R, Lawson, B, Freiden, P J, Murti, K G

BiP possesses ATP binding/hydrolysis activities that are thought to be essential for its ability to chaperone protein folding and assembly in the endoplasmic reticulum (ER). We have produced a series...

Chronic exercise training protects aged cardiac muscle against hypoxia.

Wei, J Y, Li, Y, Lincoln, T, Grossman, W, Mendelowitz, D

To test the hypothesis that chronic exercise may improve tolerance to hypoxia in aged hearts, we compared cardiac function of exercised rats to that of their age-matched, nonexercised controls. Right...

Effect of age on myocardial adaptation to volume overload in the rat.

Isoyama, S, Grossman, W, Wei, J Y

To test the hypothesis that the capacity for left ventricular (LV) adaptation to volume overload might diminish with age, we examined the hemodynamics and degree of myocardial hypertrophy in response...

Age-related differences in the expression of proto-oncogene and contractile protein genes in response to pressure overload in the rat myocardium.

Takahashi, T, Schunkert, H, Isoyama, S, Wei, J Y, Nadal-Ginard, B, Grossman, W, ...

Cardiac adaptation to hemodynamic stress involves both quantitative (hypertrophy) and qualitative (pattern of gene expression) changes. Our previous studies have shown that advancing age in the rat...

Yield of routine annual laboratory screening in the institutionalized elderly.

Domoto, K, Ben, R, Wei, J Y, Pass, T M, Komaroff, A L

We examined the yield of a battery of 19 screening laboratory tests performed routinely in 70 functionally intact patients, averaging 82.6 years of age and residing at a chronic care facility. The 70...

Procedures for Computing Equilibria of the Oligopoly Expansion Game Under Predetermined Multi-Period Pricings, Part II: Second-Lowest Marginal-Cost Pricing.

Wei, J.Y., Smeers, Y.

A two-stage game is used in this paper to model a long-run market with spatially separated producers and with multi-period demands: first, firmas simultaneously and independently invest their...

Spatially Oligopolistic Models With Cournot Producers and Regulation Transportation Prices.

Wei, J.Y., Smeers, Y.

An oligopoly with spatially dispersed producers and consumers and with multi-period demands is modeled in this paper.