首页期刊导航|天文和天体物理学研究
期刊信息/Journal information
天文和天体物理学研究
天文和天体物理学研究

汪景琇 景益鹏

月刊

1674-4527

wenyy@bao.ac.cn

010-64853746

100717

北京朝阳区大屯路甲20号国家天文台 RAA编辑部

天文和天体物理学研究/Journal Research in Astronomy and AstrophysicsCSCD北大核心CSTPCDSCI
查看更多>>本刊1981年创刊至2000年已出版20卷。创刊时为中文期刊，2001年改为《中国天文和天体物理学报》（英文版）。主要刊登天文学和天体物理学领域的原创性研究论文。主要栏目和报道范围：“研究快报”用来报道天文观测的新结果及新理论；“特约综述”聘请国际知名天文学家就某些热点问题进行专题评述。“研究论文”具有原创性。2009年更名为《天文和天体物理学研究》（英文版），由双月刊变为月刊。
正式出版
收录年代

    First Light Curve Analysis of NSVS 8294044,V1023 Her,and V1397 Her Contact Binary Systems

    Atila PoroSabrina BaudartMahshid NourmohammadZahra Sabaghpour Arani...
    1-12页
    查看更多>>摘要：The first photometric light curve investigation of the NSVS 8294044,V1023 Her,and V1397 Her binary systems is presented.We used ground-based observations for the NSVS 8294044 system and Transiting Exoplanet Survey Satellite data for V1023 Her and V1397 Her.The primary and secondary times of minima were extracted from all the data,and,by collecting the literature,a new ephemeris was computed for each system.Linear fits for the O-C diagrams were conducted using the Markov Chain Monte Carlo(MCMC)method.Light curve solutions were performed using the PHysics Of Eclipsing BinariEs Python code and the MCMC approach.The systems were found to be contact binary stars based on the fillout factor and mass ratio.V1023 Her showed the O'Connell effect,and a cold starspot on the secondary component was required for the light curve solution.The absolute parameters of the system were estimated based on an empirical relationship between orbital period and mass.We presented a new T-M equation based on a sample of 428 contact binary systems and found that our three target systems were in good agreement with the fit.The positions of the systems were also depicted on the M-L,M-R,q-Lratia,and Mtot-J0 diagrams in the logarithmic scales.
      原文链接:
    • NETL
    • NSTL
    • 万方数据

    Dust Condensation of SiC,SiO in Asymptotic Giant Branch Stellar Winds-SiC Spectrum

    Ruiqing WuChunhua ZhuGuoliang LüShuming Yang...
    13-20页
    查看更多>>摘要：We have chosen the Large Scale Atomic/Molecular Massively Parallel Simulator(LAMMPS)code to calculate the coalescence of silicon carbide(SiC),silicon oxide dust(SiO)in the AGB stellar wind.LAMMPS is a classical molecular dynamics simulation code.At the same time,we consider the effect of temperature on the evolution of molecular dynamics.We also calculated the temperature change of non-spherical SiC,SiO dust coalescence.The condensation temperature range of SiC dust in the AGB stellar wind is[300-500]k and[900-1100]k for SiO.Finally,the infrared spectrum of SiC was calculated using Gaussian 16 software.The 77SiC,70Si3C3,and 121Si3C3 models have clear characteristic peaks of infrared spectra responding at 5,8.6,11.3,15,19,and 37 μm.
      原文链接:
    • NETL
    • NSTL
    • 万方数据

    On the Surface Helium Abundance of B-type Hot Subdwarf Stars from the WD+MS Channel of Type Ⅰa Supernovae

    Rui-Jie JiXiang-Cun MengZheng-Wei Liu
    21-27页
    查看更多>>摘要：The origin of intermediate helium(He)-rich hot subdwarfs is still unclear.Previous studies have suggested that some surviving Type Ⅰa supernovae(SNe Ⅰa)companions from the white dwarf+main-sequence(WD+MS)channel may contribute to the intermediate He-rich hot subdwarfs.However,previous studies ignored the impact of atomic diffusion on the post-explosion evolution of surviving companion stars of SNe Ⅰa,leading to the aspect that they could not explain the observed surface He abundance of intermediate He-rich hot subdwarfs.In this work,by taking the atomic diffusion and stellar wind into account,we trace the surviving companions of SNe Ⅰa from the WD+MS channel using the one-dimensional stellar evolution code MESA until they evolve into hot subdwarfs.We find that the surface He-abundances of our surviving companion models during their core He-burning phases are in a range of-1(＜)log(NHe/NH)(＜)0,which are consistent with those observed in intermediate He-rich hot subdwarfs.This seems to further support the notion that it is possible for surviving companions of SNe Ⅰa in the WD+MS channel to form some intermediate He-rich hot subdwarfs.
      原文链接:
    • NETL
    • NSTL
    • 万方数据

    How Common can the Origin of Clusters Cha Ⅰ,Cha Ⅱ,? Cha and η Cha be?

    V.V.BobylevA.T.Bajkova
    28-34页
    查看更多>>摘要：The trajectories of the groupings η Cha,ϵ Cha and Cha Ⅰ,Cha Ⅱ,constructed backward in time,have been studied.We concluded that the hypothesis about the joint formation of all four of these clusters from one molecular cloud cannot be completely excluded.However,10-15 Myr ago,all these four clusters were located at approximately the same height above the plane of the Galaxy.Thus,the gas-dust clouds from which all these four clusters were formed were located on one broad front.It is possible that the appearance of the Cha Ⅰ,Cha Ⅱ,ϵ Cha and η Cha clusters may be associated with the impact on such a front of shock waves formed after supernova explosions in the Scorpius-Centaurus association.New estimates of the kinematic ages of the clusters Cha Ⅰ and Cha Ⅱ are obtained as 0.12±0.19 and 0.05±0.15,respectively.It is shown that the minimum size of the Cha Ⅰ-north and Cha Ⅰ-south clusters corresponded to the time of 0.55±0.24 Myr and 0.04±0.18 Myr ago,respectively,and approximately 1.5 Myr ago the distance between the trajectories of these two groupings was minimal.
      原文链接:
    • NETL
    • NSTL
    • 万方数据

    Close Major-merger Pairs at z=0:Star-forming Galaxies with Pseudobulges

    何川徐聪Ute Lisenfeld戴昱...
    35-60页
    查看更多>>摘要：We present a study of star-forming galaxies(SFGs)with pseudobulges(bulges with Sérsic index n＜2)in a local close major-merger galaxy pair sample(H-KPAIR).With data from new aperture photometries in the optical and near-infrared bands(aperture size of 7 kpc)and from the literature,we find that the mean Age of central stellar populations in Spirals with pseudobulges is consistent with that of disky galaxies and is nearly constant against the bulge-to-total ratio(B/T).Paired Spirals have a slightly lower fraction of pure disk galaxies(B/T ≤ 0.1)than their counterparts in the control sample.Compared to SFGs with classical bulges,those with pseudobulges have a higher(＞2σ)mean of specific star formation rate(sSFR)enhancement(sSFRenh=0.33±0.07 versus sSFRenh＝ 0.12±0.06)and broader scatter(by～1dex).The eight SFGs that have the highest sSFRenh in the sample all have pseudobulges.A majority(69％)of paired SFGs with strong enhancement(having sSFR more than 5 times the median of the control galaxies)have pseudobulges.The Spitzer data show that the pseudobulges in these galaxies are tightly linked to nuclear/circum-nuclear starbursts.Pseudobulge SFGs in S+S and in S+E pairs have significantly(＞3σ)different sSFR enhancement,with the means of sSFRenh=0.45±0.08 and-0.04±0.11,respectively.We find a decrease in the sSFR enhancements with the density of the environment for SFGs with pseudobulges.Since a high fraction(5/11)of pseudobulge SFGs in S+E pairs are in rich groups/clusters(local density N1Mpc ≥ 7),the dense environment might be the cause for their low sSFRenh.
      原文链接:
    • NETL
    • NSTL
    • 万方数据

    Searching for the Highest Energy of Pulsation and Critical Luminosity of Swift J0243.6+6124 Observed by Insight-HXMT

    Qing-Xia ZhaoXian HouMing-Yu GeShuang-Nan Zhang...
    61-69页
    查看更多>>摘要：Owing to the broad energy coverage of Insight-HXMT in the hard X-ray band,we detected the highest energy of pulsation exceeding 200 keV around the 2017-2018 outburst peak of the first Galactic pulsating ultraluminous X-ray source(PULX)Swift J0243.6+6124,which is the highest energy detected from PULXs to date.We also obtained the highest energy of pulsation of every exposure during the outburst in 2017-2018,and found the highest energy is roughly positively correlated with luminosity.Using our newly developed method,we identified the critical luminosity being 4 × 1038 ergs-1 when the main peaks of the low and high energy pulse profiles became aligned,which separates the fan-beam dominated and pencil-beam dominated accretion regimes.Above the critical luminosity,the phase of the main peak shifted gradually from 0.5 to 0.8 until the outburst peak in all energy bands is reached,which is in agreement with the phase shift found previously at low energies.Our result is consistent with what is derived from spectral analysis.
      原文链接:
    • NETL
    • NSTL
    • 万方数据

    First Digit Distributions of Gamma-Ray Bursts

    Hou-Yu LaiJun-Jie Wei
    70-75页
    查看更多>>摘要：The occurrence of the first significant digits from real world sources is usually not equally distributed,but is consistent with a logarithmic distribution instead,known as Benford's law.In this work,we perform a comprehensive investigation on the first digit distributions of the duration,fluence,and energy flux of gamma-ray bursts(GRBs)for the first time.For a complete GRB sample detected by the Fermi satellite,we find that the first digits of the duration and fluence adhere to Benford's law.However,the energy flux shows a significant departure from this law,which may be due to the fact that a considerable part of the energy flux measurements is restricted by lack of spectral information.Based on the conventional duration classification scheme,we also check if the durations and fluences of long and short GRBs(with duration T90＞2 s and T90≤2 s,respectively)obey Benford's law.We find that the fluences of both long and short GRBs still agree with the Benford distribution,but their durations do not follow Benford's law.Our results hint that the long-short GRB classification scheme does not directly represent the intrinsic physical classification scheme.
      原文链接:
    • NETL
    • NSTL
    • 万方数据

    New Vacuum Solar Telescope Achieves Narrowband Infrared Solar Imaging Observation at HeI 10830?

    Wei-Jie MengFang-Yu XuZhen-Yu Jin
    76-84页
    查看更多>>摘要：The near-infrared imaging channel constitutes a crucial component of the multichannel high-resolution imaging system of the New Vacuum Solar Telescope(NVST).We have successfully achieved high-resolution,narrowband imaging of the chromosphere using HeI 10830Å triplet within this channel,which significantly enhances the imaging observation capabilities of NVST.This paper provides a concise overview of the optical system associated with the near-infrared imaging channel,detailing data processing procedures and presenting several observed images.Leveraging a high-resolution image reconstruction algorithm,we were able to generate a narrowband image near the diffraction limit at 10830 Å with a temporal resolution of less than 10 s.
      原文链接:
    • NETL
    • NSTL
    • 万方数据

    Astronomical Test with CMOS on the 60 cm Telescope at the Xinglong Observatory,NAOC

    Hai-Yang MuZhou FanYi-Nan ZhuYu Zhang...
    85-102页
    查看更多>>摘要：This work shows details of an evaluation of an observational system comprising a complementary metal-oxide-semiconductor detector,60 cm telescope and filter complement.The system's photometric precision and differential photometric precision,and extinction coefficients were assessed through observations of Supersky flat fields,open clusters,standard stars and exoplanets.Photometry was precision achieved at the 0.02 mag level,with differential photometry of 0.004 mag precision.Extinction was found to agree with previous studies conducted at Xinglong Observatory.Ultimately,the results demonstrate this observing system is capable of precision scientific observations with a charge-coupled device across the optical wavelengths.
      原文链接:
    • NETL
    • NSTL
    • 万方数据

    Digitization of Astronomical Photographic Plates of China and Astrometric Measurement of Single-exposure Plates

    商正君于涌王亮亮杨美婷...
    103-116页
    查看更多>>摘要：From the mid-19th century to the end of the 20th century,photographic plates served as the primary detectors for astronomical observations.Astronomical photographic observations in China began in 1901,and over a century,a total of approximately 30,000 astronomical photographic plates were captured.These historical plates play an irreplaceable role in conducting long-term,time-domain astronomical research.To preserve and explore these valuable original astronomical observational data,Shanghai Astronomical Observatory has organized the transportation of plates,taken during nighttime observations from various stations across the country,to the Sheshan Plate Archive for centralized preservation.For the first time,plate information statistics were calculated.On this basis,the plates were cleaned and digitally scanned,and finally digitized images were acquired for 29,314 plates.In this study,using Gaia DR2 as the reference star catalog,astrometric processing was carried out successfully on 15,696 single-exposure plates,including object extraction,stellar identification,and plate model computation.As a result,for long focal length telescopes,such as the 40 cm double-tube refractor telescope,the 1.56 m reflector telescope at Shanghai Astronomical Observatory,and the 1m reflecting telescope at Yunnan Astronomical Observatory,the astrometric accuracy obtained for their plates is approximately 0″.1-0″.3.The distribution of astrometric accuracy for medium and short focal length telescopes ranges from 0″.3 to 1″.0.The relevant data of this batch of plates,including digitized images and a stellar catalog of the plates,are archived and released by the National Astronomical Data Center.Users can access and download plate data based on keywords such as station,telescope,observation year,and observed celestial coordinates.
      原文链接:
    • NETL
    • NSTL
    • 万方数据