Monthly Notices of the Royal Astronomical Society最新文献

Correction to: TESS light curves of cataclysmic variables – III – More superhump systems among old novae and nova-like variables 更正：TESS 大灾变的光变曲线 - III - 旧新星和类新星变星中的更多超丘系统

Monthly Notices of the Royal Astronomical Society Pub Date : 2024-07-27 DOI: 10.1093/mnras/stae1751

Albert Bruch

引用次数: 0

Sulphur storage in cold molecular clouds: the case of the NH4+SH- salt on interstellar dust grains 冷分子云中的硫储存：星际尘粒上的 NH4+SH- 盐案例

Monthly Notices of the Royal Astronomical Society Pub Date : 2024-07-22 DOI: 10.1093/mnras/stae1747

J. Vitorino, J. Loison, V. Wakelam, E. Congiu, F. Dulieu

{"title":"Sulphur storage in cold molecular clouds: the case of the NH4+SH- salt on interstellar dust grains","authors":"J. Vitorino, J. Loison, V. Wakelam, E. Congiu, F. Dulieu","doi":"10.1093/mnras/stae1747","DOIUrl":"https://doi.org/10.1093/mnras/stae1747","url":null,"abstract":"\u0000 In comets and in the cold phase of the interstellar medium (ISM), ammonium salts are key molecular species due to their role in the retention of volatile compounds on cold surfaces. In the case of sulphur, the H2S/OCS ratio observed in protostars could be explained by the presence of ammonium hydrosulphide (NH4SH) salts. However, laboratory data on the properties of NH4SH in ISM cold relevant conditions are rather scarce, as they usually focus on the atmosphere of Jupiter. We propose to consolidate the laboratory data regarding NH4SH on grains, by performing temperature programmed desorption experiments and Fourier transform infrared reflection spectroscopy. The salt was also exposed to H atoms to mimic the ISM conditions. NH4SH was found to form in situ at 10 K, from a mixture of ammonia (NH3) and hydrogen sulphide (H2S). The NH4+ infrared feature (1485 cm−1) is the most prominent one at 80 K. As pure species, H2S and NH3 desorb at 76 K and 90 K, respectively, whereas they are released into the gas phase at 153 K when adsorbed in the form of salt. The presence of water delays the desorption of the salt until the very end of the water desorption, but does not affect the desorption kinetics. During H-exposure, the salt is dissociated and no new product was detected. As a comparative study, salts have been included in the Nautilus gas-grain model. The results show a good correlation with the observations of IRAS 16293-2422B, as opposed to when NH2SH is not included in the model.","PeriodicalId":506975,"journal":{"name":"Monthly Notices of the Royal Astronomical Society","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141817147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Correction to: The variability patterns of the TeV blazar PG 1553 + 113 from a decade of MAGIC and multiband observations 更正：从十年的 MAGIC 和多波段观测得出的 TeV 星 PG 1553 + 113 的变异模式

Monthly Notices of the Royal Astronomical Society Pub Date : 2024-07-19 DOI: 10.1093/mnras/stae1563

引用次数: 0

Correction to: The role of environment and AGN feedback in quenching local galaxies: comparing cosmological hydrodynamical simulations to the SDSS Correction to：环境和 AGN 反馈在淬火本地星系中的作用：将宇宙学流体力学模拟与 SDSS 进行比较

Monthly Notices of the Royal Astronomical Society Pub Date : 2024-07-19 DOI: 10.1093/mnras/stae1667

Paul H. Goubert, A. Bluck, J. Piotrowska, Roberto Maiolino

引用次数: 0

Correction to: The environmental dependence of the stellar mass–gas metallicity relation in Horizon Run 5 Correction to：地平线运行 5 中恒星质量-气体金属性关系的环境依赖性

Monthly Notices of the Royal Astronomical Society Pub Date : 2024-07-19 DOI: 10.1093/mnras/stae1699

引用次数: 0

Discovery of a damped Lyα absorber in the circumnuclear zone of the FeLoBAL quasar SDSS J083942.11+380526.3 在 FeLoBAL 类星 SDSS J083942.11+380526.3 的环核区发现阻尼 Lyα 吸收体

Monthly Notices of the Royal Astronomical Society Pub Date : 2024-07-16 DOI: 10.1093/mnras/stae1728

Shengmiao Wu, Xiheng Shi, Nibedita Kalita, Xiang Pan, Qiguo Tian, T. Ji, Shaohua Zhang, Xuejie Dai, Peng Jiang, Chenwei Yang, Hongyan Zhou

{"title":"Discovery of a damped Lyα absorber in the circumnuclear zone of the FeLoBAL quasar SDSS J083942.11+380526.3","authors":"Shengmiao Wu, Xiheng Shi, Nibedita Kalita, Xiang Pan, Qiguo Tian, T. Ji, Shaohua Zhang, Xuejie Dai, Peng Jiang, Chenwei Yang, Hongyan Zhou","doi":"10.1093/mnras/stae1728","DOIUrl":"https://doi.org/10.1093/mnras/stae1728","url":null,"abstract":"\u0000 SDSS J083942.11+380526.3 (z = 2.315) is a FeLoBAL quasar that exhibits visible Balmer absorption lines (Hα), implying a significant n = 2 population. The quasar also shows an array of absorption lines, including O I, Ni II, Fe II, Mg II, Al III to C IV and N V. The high-ionization absorption lines such as C IV and Si IV are revealed by slightly blueshifted BAL troughs. The resonance doublets such as Mg II and Al III are saturated but did not reached zero intensity which indicates that the BLR is partially covered. Overall, however, the absorption is predominantly from low-ionization Fe II lines, emitted from ground and excited states up to at least 3.814 eV. This implies that the absorbing gas spans the hydrogen ionization front and extends into the partially ionized zone where neutral hydrogen is certainly present. Notably, the hydrogen line spectrum of the quasar shows no signature of expected Lyα absorption. Instead, the line spectrum shows an unusual Lyα emission characterized by a fully filled emission line spectrum which is a composite of a strong narrow core superposed on a weak broad base. Taking into account the effect of partial covering to BLR, we have extracted a strong DLA trough in Lyα emission region. To fit the spectrum, we performed photoionized model calculations and compared them to the observations. We found that photoionization modeling using CLOUDY can successfully reproduce the main characteristics of the quasar spectrum, and the predicted neutral hydrogen column density arising from the clouds responsible for the low-ionization absorption provides a good match to the extracted DLA trough. This indicates that both the DLA and the low-ionization absorption arise from the same medium that is roughly collocated with the dusty torus.","PeriodicalId":506975,"journal":{"name":"Monthly Notices of the Royal Astronomical Society","volume":"3 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141641576","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comprehensive analysis of the eclipsing binaries V527 Dra and V2846 Cyg 对食双星 V527 Dra 和 V2846 Cyg 的综合分析

Monthly Notices of the Royal Astronomical Society Pub Date : 2024-07-16 DOI: 10.1093/mnras/stae1709

A. Čeki, H. V. Şenavcı, O. Latković, Ebru Uzunçam, Eda Burcu Yorulmaz, Engin Bahar

{"title":"Comprehensive analysis of the eclipsing binaries V527 Dra and V2846 Cyg","authors":"A. Čeki, H. V. Şenavcı, O. Latković, Ebru Uzunçam, Eda Burcu Yorulmaz, Engin Bahar","doi":"10.1093/mnras/stae1709","DOIUrl":"https://doi.org/10.1093/mnras/stae1709","url":null,"abstract":"\u0000 This is the first comprehensive study of the eclipsing binaries V527 Dra and V2846 Cyg, based on radial velocities and ground- and space-based light curves. We perform detailed modeling of these data to derive the absolute parameters and the orbital properties of the two systems. V527 Dra is found to be a semi-detached, and V2846 Cyg a contact binary. Both show continual out-of-eclipse variations that can be explained by migrating dark spots of magnetic origin. We also perform the eclipse timing variation (ETV) analysis which reveals that V527 Dra has a tertiary companion whose mass (∼1M⊙) and orbital inclination (∼70○) are additionally constrained by radial velocities. The ETV diagram of V2846 Cyg displays a quadratic trend accompanied by a low-amplitude cyclic variation, likely due to a magnetic cycle, although further eclipse times are needed to provide a clearer explanation. Lastly, we demonstrate a correlation between the variations in spot parameters obtained via light curve modeling for individual orbital cycles and the residual ETVs, essentially confirming the assumption of magnetic activity in both systems.","PeriodicalId":506975,"journal":{"name":"Monthly Notices of the Royal Astronomical Society","volume":"90 18","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141642795","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Constraints on short gamma-ray burst physics and their host galaxies from systematic radio follow-up campaigns 系统性射电跟踪活动对短伽马射线暴物理学及其宿主星系的制约

Monthly Notices of the Royal Astronomical Society Pub Date : 2024-07-16 DOI: 10.1093/mnras/stae1568

S. Chastain, A. J. van der Horst, G. Anderson, L. Rhodes, D. d'Antonio, M. E. Bell, R. Fender, P. J. Hancock, A. Horesh, C. Kouveliotou, K. Mooley, A. Rowlinson, S. Vergani, R. Wijers, P. Woudt

{"title":"Constraints on short gamma-ray burst physics and their host galaxies from systematic radio follow-up campaigns","authors":"S. Chastain, A. J. van der Horst, G. Anderson, L. Rhodes, D. d'Antonio, M. E. Bell, R. Fender, P. J. Hancock, A. Horesh, C. Kouveliotou, K. Mooley, A. Rowlinson, S. Vergani, R. Wijers, P. Woudt","doi":"10.1093/mnras/stae1568","DOIUrl":"https://doi.org/10.1093/mnras/stae1568","url":null,"abstract":"\u0000 Short gamma-ray bursts (GRBs) are explosive transients caused by binary mergers of compact objects containing at least one neutron star. Multi-wavelength afterglow observations provide constraints on the physical parameters of the jet, its surrounding medium, and the microphysics of the enhanced magnetic fields and accelerated electrons in the blast wave at the front of the jet. The synchrotron radio emission can be tracked for much longer than in other spectral regimes, and it can pin down the evolution of the spectral peak. We present the results of a systematic observing campaign of eight short GRBs with the MeerKAT radio telescope. Additionally, we present observations of four of these short GRBs using the ATCA radio telescope and two of these short GRBs with the e-MERLIN radio telescope. Using these results we report one possible detection of a short GRB afterglow from GRB 230217A and deep upper limits for the rest of our short GRB observations. We use these observations to place constraints on some of the physical parameters, in particular those related to electron acceleration, the circumburst density, and gamma-ray energy efficiency. We discuss how deeper observations with new and upgraded telescopes should be able to determine if the gamma-ray efficiency differs between long and short GRBs. We also report detections of the likely host galaxies for four of the eight GRBs and upper limits for another GRB, increasing the number of detected host galaxies in the radio with implications for the star formation rate in these galaxies.","PeriodicalId":506975,"journal":{"name":"Monthly Notices of the Royal Astronomical Society","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141641447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Age and metal gradients in massive quiescent galaxies at 0.6 ≲ z ≲ 1.0: implications for quenching and assembly histories 0.6 ≲ z ≲ 1.0大质量静止星系的年龄和金属梯度：对淬火和组装历史的影响

Monthly Notices of the Royal Astronomical Society Pub Date : 2024-07-15 DOI: 10.1093/mnras/stae1739

Chloe M. Cheng, M. Kriek, Aliza G. Beverage, A. van der Wel, R. Bezanson, F. d’Eugenio, M. Franx, Pavel E. Mancera Pina, A. Nersesian, Martje Slob, K. Suess, P. V. van Dokkum, Po-Feng Wu, A. Gallazzi, S. Zibetti

{"title":"Age and metal gradients in massive quiescent galaxies at 0.6 ≲ z ≲ 1.0: implications for quenching and assembly histories","authors":"Chloe M. Cheng, M. Kriek, Aliza G. Beverage, A. van der Wel, R. Bezanson, F. d’Eugenio, M. Franx, Pavel E. Mancera Pina, A. Nersesian, Martje Slob, K. Suess, P. V. van Dokkum, Po-Feng Wu, A. Gallazzi, S. Zibetti","doi":"10.1093/mnras/stae1739","DOIUrl":"https://doi.org/10.1093/mnras/stae1739","url":null,"abstract":"\u0000 We present spatially resolved, SSP-equivalent ages, stellar metallicities, and abundance ratios for 456 massive (10.3 ≲ log (M*/M⊙) ≲ 11.8) quiescent galaxies at 0.6 ≲ z ≲ 1.0 from the LEGA-C survey, derived using full-spectrum models. Typically, we find flat age and [Mg/Fe] gradients, and negative [Fe/H] gradients, implying iron-rich cores. We also estimate intrinsic [Fe/H] gradients via forward-modeling. We examine the observed gradients in three age bins. Younger quiescent galaxies typically have negative [Fe/H] gradients and positive age gradients, possibly indicating a recent central starburst. Additionally, this finding suggests that photometrically-measured flat colour gradients in young quiescent galaxies are the result of the positive age and negative metallicity gradients cancelling each other. For older quiescent galaxies, the age gradients become flat and [Fe/H] gradients weaken, though remain negative. Thus, negative colour gradients at older ages are likely driven by metallicity gradients. The diminishing age gradient may result from the starburst fading. Furthermore, the persistence of the [Fe/H] gradients may suggest that the outskirts are simultaneously built up by mergers with lower-metallicity satellites. On the other hand, the gradients could be inherited from the star-forming phase, in which case mergers may not be needed to explain our findings. This work illustrates the need for resolved spectroscopy, instead of just photometry, to measure stellar population gradients. Extending these measurements to higher redshift is imperative for understanding how stellar populations in quiescent galaxies are assembled over cosmic time.","PeriodicalId":506975,"journal":{"name":"Monthly Notices of the Royal Astronomical Society","volume":"56 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141644479","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Spatially resolved properties of extraplanar diffuse ionized gas in NGC 3511 and NGC 3513 NGC 3511 和 NGC 3513 中平面外弥漫电离气体的空间分辨特性

Monthly Notices of the Royal Astronomical Society Pub Date : 2024-07-15 DOI: 10.1093/mnras/stae1708

Hanjue Zhu, E. Boettcher, Hsiao-Wen Chen

{"title":"Spatially resolved properties of extraplanar diffuse ionized gas in NGC 3511 and NGC 3513","authors":"Hanjue Zhu, E. Boettcher, Hsiao-Wen Chen","doi":"10.1093/mnras/stae1708","DOIUrl":"https://doi.org/10.1093/mnras/stae1708","url":null,"abstract":"\u0000 Gaseous, disk-halo interfaces are shaped by processes that are critical to galaxy evolution, including gas accretion and outflows. Extraplanar diffuse ionized gas (eDIG) layers are characterized by scale heights that largely exceed those predicted by their temperature, suggesting the presence of turbulent energy injection from star formation feedback. However, the origin of this large scale height remains uncertain. To explore the connection between eDIG and star-forming disks, we present a spatially-resolved case study of a nearby pair of sub-L*, intermediately inclined disk galaxies NGC 3511/3513. We decompose optical nebular lines observed using long-slit spectroscopy into narrow and broad velocity components. In NGC 3511, the broad component has three distinctive characteristics in comparison to the narrow component: (1) significantly higher velocity dispersions (a median 〈σ〉Broad = 24 km s−1compared to 〈σ〉Narrow = 13 km s−1), (2) elevated [N ii]λ6583/Hα and [S ii]λ6716/Hα line ratios, and (3) a rotational velocity lag. These characteristics support the origin of the broad component in an extraplanar, gaseous disk. In NGC 3513, the broad component reveals disk-halo circulation via localized outflows at radius ≲ 1 kpc. For NGC 3511, we test a vertical hydrostatic equilibrium model with pressure support supplied by thermal and turbulent motions. Under this assumption, the eDIG velocity dispersion corresponds to a scale height hz ≳ 0.2 − 0.4 kpc at R = 3 − 5 kpc, a factor of a few above the thermal scale height (hz ≲ 0.1 kpc). This highlights the importance of turbulent motions to the vertical structure of the gaseous, disk-halo interface.","PeriodicalId":506975,"journal":{"name":"Monthly Notices of the Royal Astronomical Society","volume":"17 22","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141647873","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0