Jurnal The Messenger最新文献

{"title":"The Araucaria Project Establishes the Most Precise Benchmark for Cosmic Distances","authors":"G. Pietrzyński, D. Graczyk, A. Gallenne, W. Gieren, I. Thompson, B. Pilecki, P. Karczmarek, M. Górski, K. Suchomska, M. Taormina, B. Zgirski, P. Wielgórski, N. Nardetto, P. Kervella, F. Bresolin, R. Kudritzki, J. Storm, R. Smolec, W. Narloch, M. Kałuszyński, S. Villanova","doi":"10.18727/0722-6691/5189","DOIUrl":"https://doi.org/10.18727/0722-6691/5189","url":null,"abstract":"","PeriodicalId":41738,"journal":{"name":"Jurnal The Messenger","volume":"1 1","pages":"24-28"},"PeriodicalIF":0.4,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89799192","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}

{"title":"Fellows at ESO","authors":"F. Belfiore, R. Thomas, C. Navarrete","doi":"10.18727/0722-6691/5193","DOIUrl":"https://doi.org/10.18727/0722-6691/5193","url":null,"abstract":"","PeriodicalId":41738,"journal":{"name":"Jurnal The Messenger","volume":"5 1","pages":"41-44"},"PeriodicalIF":0.4,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90475857","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}

{"title":"Report on the ESO Workshop \"The Galactic Bulge at the Crossroads\"","authors":"I. Saviane, M. Zoccali, D. Minniti, D. Geisler, B. Dias","doi":"10.18727/0722-6691/5191","DOIUrl":"https://doi.org/10.18727/0722-6691/5191","url":null,"abstract":"","PeriodicalId":41738,"journal":{"name":"Jurnal The Messenger","volume":"12 1","pages":"31-35"},"PeriodicalIF":0.4,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78170218","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}

{"title":"NEAR: First Results from the Search for Low-Mass Planets in α Cen","authors":"M. Kasper, R. Arsenault, U. Käufl, G. Jakob, S. Leveratto, G. Zins, E. Pantin, P. Duhoux, M. Riquelme, J. Kirchbauer, J. Kolb, P. Pathak, R. Siebenmorgen, C. Soenke, E. Fuenteseca, M. Sterzik, N. Ageorges, S. Gutruf, D. Kampf, A. Reutlinger, O. Absil, C. Delacroix, A. Maire, E. Huby, O. Guyon, P. Klupar, D. Mawet, G. Ruane, M. Karlsson, K. Dohlen, A. Vigan, M. N’diaye, S. Quanz, A. Carlotti","doi":"10.18727/0722-6691/5163","DOIUrl":"https://doi.org/10.18727/0722-6691/5163","url":null,"abstract":"The Messenger 178 – Quarter 4 | 2019 ESO 3.6-metre telescope at La Silla, was modified and used to carry out the acceptance tests of the internal chopper. This was followed by a performance evaluation of the Annular Groove Phase Mask (AGPM) coronagraph with a dedicated optical setup incorporating a line-tunable CO2 laser, elliptical mirrors and germanium lenses. Four AGPM coronagraphs were tested, three specifically optimised for the NEAR filter (10–12.5 μm) and an older sample manufactured in 2012 and optimised for wavelengths between 11 and 13.1 μm. Surprisingly, the older coronagraph performed best, with a rejection ratio of up to 400 at 10.5 μm, and a contrast level of < 10– 4 at 3 λ/D.","PeriodicalId":41738,"journal":{"name":"Jurnal The Messenger","volume":"8 1","pages":"5-9"},"PeriodicalIF":0.4,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86638083","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}

{"title":"The ESO Summer Research Programme 2019","authors":"C. Manara, Christopher Harrison, A. Zanella, Claudio Agliozzo, Richard I. Anderson, F. A. Battaia, F. Belfiore, R. Burg, Chian-Chou Chen, S. Facchini, J. Fensch, P. Jethwa, R. Kokotanekova, F. Lelli, A. Miotello, A. Pala, M. Querejeta, A. Rubin, D. Wylezalek, Laura A Watkins","doi":"10.18727/0722-6691/5179","DOIUrl":"https://doi.org/10.18727/0722-6691/5179","url":null,"abstract":"","PeriodicalId":41738,"journal":{"name":"Jurnal The Messenger","volume":"2 1","pages":"57-60"},"PeriodicalIF":0.4,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83547745","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}

{"title":"Report on Status of ESO Public Surveys and Current Activities","authors":"M. Arnaboldi, N. Delmotte, D. Gadotti, M. Hilker, G. Hussain, L. Mascetti, A. Micol, M. Petr-Gotzens, M. Rejkuba, J. Retzlaff, C. Spiniello, B. Leibundgut, M. Romaniello","doi":"10.18727/0722-6691/5164","DOIUrl":"https://doi.org/10.18727/0722-6691/5164","url":null,"abstract":"","PeriodicalId":41738,"journal":{"name":"Jurnal The Messenger","volume":"50 1","pages":"10-16"},"PeriodicalIF":0.4,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76864529","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}

{"title":"Spatially resolved accretion-ejection in compact binaries with GRAVITY","authors":"R. Abuter, M. Accardo, T. Adler, A. Amorim, N. Anugu, G. Ávila, M. Bauböck, M. Benisty, J. Berger, J. Bestenlehner, H. Beust, N. Blind, M. Bonnefoy, H. Bonnet, P. Bourget, J. Bouvier, W. Brandner, R. Brast, A. Buron, L. Burtscher, F. Cantalloube, A. C. O. Garatti, P. Caselli, F. Cassaing, F. Chapron, B. Charnay, É. Choquet, Y. Clénet, C. Collin, V. C. Foresto, R. Davies, C. Deen, F. Delplancke-Ströbele, R. Dembet, F. Dérie, W. D. Wit, J. Dexter, T. Zeeuw, C. Dougados, G. Dubus, G. Duvert, M. Ebert, A. Eckart, F. Eisenhauer, M. Esselborn, F. Eupen, P. Fédou, M. Ferreira, G. Finger, N. F. Schreiber, F. Gao, C. G. Dabo, R. G. López, P. Garcia, E. Gendron, R. Genzel, O. Gerhard, J. Gil, S. Gillessen, F. Gonté, P. Gordo, D. Gratadour, A. Greenbaum, R. Grellmann, U. Grözinger, P. Guajardo, S. Guieu, M. Habibi, P. Haguenauer, O. Hans, X. Haubois, M. Haug, F. Haussmann, T. Henning, S. Hippler, S. Hönig, M. Horrobin, A. Huber, Z. Hubert, N. Hubin, C. Hummel, G. Jakob, A. Janssen, A. Rosales, L. Jochum, L. Jocou, J","doi":"10.18727/0722-6691/5169","DOIUrl":"https://doi.org/10.18727/0722-6691/5169","url":null,"abstract":"The Messenger 178 – Quarter 4 | 2019 hole and are consistent with a small region of heated electrons (a “hot spot”), moving in an orbit around the black hole. The GRAVITY observations also revealed changes in the polarisation angle over the course of the flare. In particular, as the centroid of the emission region completes one orbit around the black hole, the polarisation angle also makes a single loop. These polarisation measurements indicate the presence of a strong magnetic field in the immediate vicinity of the black hole and might indicate a magnetic origin of the flare. What’s next?","PeriodicalId":41738,"journal":{"name":"Jurnal The Messenger","volume":"148 1","pages":"29-31"},"PeriodicalIF":0.4,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77356693","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}

{"title":"GRAVITY and the Galactic Centre","authors":"R. Abuter, M. Accardo, T. Adler, A. Amorim, N. Anugu, G. Ávila, M. Bauböck, M. Benisty, J. Berger, J. Bestenlehner, H. Beust, N. Blind, M. Bonnefoy, H. Bonnet, P. Bourget, J. Bouvier, W. Brandner, R. Brast, A. Buron, L. Burtscher, F. Cantalloube, A. C. O. Garatti, P. Caselli, F. Cassaing, F. Chapron, B. Charnay, É. Choquet, Y. Clénet, C. Collin, V. C. Foresto, R. Davies, C. Deen, F. Delplancke-Ströbele, R. Dembet, F. Dérie, W. D. Wit, J. Dexter, T. Zeeuw, C. Dougados, G. Dubus, G. Duvert, M. Ebert, A. Eckart, F. Eisenhauer, M. Esselborn, F. Eupen, P. Fédou, M. Ferreira, G. Finger, N. F. Schreiber, F. Gao, C. G. Dabo, R. G. López, P. Garcia, E. Gendron, R. Genzel, O. Gerhard, J. Gil, S. Gillessen, F. Gonté, P. Gordo, D. Gratadour, A. Greenbaum, R. Grellmann, U. Grözinger, P. Guajardo, S. Guieu, M. Habibi, P. Haguenauer, O. Hans, X. Haubois, M. Haug, F. Haussmann, T. Henning, S. Hippler, S. Hönig, M. Horrobin, A. Huber, Z. Hubert, N. Hubin, C. Hummel, G. Jakob, A. Janssen, A. Rosales, L. Jochum, L. Jocou, J","doi":"10.18727/0722-6691/5168","DOIUrl":"https://doi.org/10.18727/0722-6691/5168","url":null,"abstract":"","PeriodicalId":41738,"journal":{"name":"Jurnal The Messenger","volume":"38 1","pages":"26-29"},"PeriodicalIF":0.4,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74564315","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}

{"title":"Images at the highest angular resolution with GRAVITY: The case of η Carinae","authors":"R. Abuter, M. Accardo, T. Adler, A. Amorim, N. Anugu, G. Ávila, M. Bauböck, M. Benisty, J. Berger, J. Bestenlehner, H. Beust, N. Blind, M. Bonnefoy, H. Bonnet, P. Bourget, J. Bouvier, W. Brandner, R. Brast, A. Buron, L. Burtscher, F. Cantalloube, A. C. O. Garatti, P. Caselli, F. Cassaing, F. Chapron, B. Charnay, É. Choquet, Y. Clénet, C. Collin, V. C. Foresto, R. Davies, C. Deen, F. Delplancke-Ströbele, R. Dembet, F. Dérie, W. D. Wit, J. Dexter, T. Zeeuw, C. Dougados, G. Dubus, G. Duvert, M. Ebert, A. Eckart, F. Eisenhauer, M. Esselborn, F. Eupen, P. Fédou, M. Ferreira, G. Finger, N. F. Schreiber, F. Gao, C. G. Dabo, R. G. López, P. Garcia, E. Gendron, R. Genzel, O. Gerhard, J. Gil, S. Gillessen, F. Gonté, P. Gordo, D. Gratadour, A. Greenbaum, R. Grellmann, U. Grözinger, P. Guajardo, S. Guieu, M. Habibi, P. Haguenauer, O. Hans, X. Haubois, M. Haug, F. Haussmann, T. Henning, S. Hippler, S. Hönig, M. Horrobin, A. Huber, Z. Hubert, N. Hubin, C. Hummel, G. Jakob, A. Janssen, A. Rosales, L. Jochum, L. Jocou, J","doi":"10.18727/0722-6691/5170","DOIUrl":"https://doi.org/10.18727/0722-6691/5170","url":null,"abstract":"Blondin, J. M. 1994, ApJ, 435, 756 Blundell, K. et al. 2001, ApJ, 562, L79 Fabrika, S. 2004, Space Science Reviews, 12, 1 GRAVITY Collaboration et al. 2017a, ApJ, 844, 177 GRAVITY Collaboration et al. 2017b, A&A, 602, L11 Kaper, L. et al. 2006, A&A, 457, 595 Leahy, D. & Kostka, M. 2008, MNRAS, 384, 747 Margon, B. et al. 1979, ApJ, 233, L63 Milgrom, M. 1979, A&A, 78, L9 Waisberg, I. et al. 2019a, A&A, 623, A47 Waisberg, I. et al. 2019b, A&A, 624, A127 of the stellar wind facing the compact object. In addition, asymmetries revealed by the differential visibility phases across the emission lines may point to an additional component, possibly a stream of enhanced density which has been posited to exist in the system from the analysis of X-ray light curves (Leahy & Kotska, 2008). Further observations at different orbital phases could take advantage of the significant eccentricity in order to disentangle intrinsic variability of the wind from the distortion caused by the pulsar accretion. The spectral differential visibilities measured by GRAVITY (GRAVITY Collaboration et al., 2017a) reveal an extended wind with a size several times the stellar radius, which is also significantly distorted — being more extended on the side that is shielded from the pulsar — and which could be caused by the X-ray ionisation 0.8","PeriodicalId":41738,"journal":{"name":"Jurnal The Messenger","volume":"3 1","pages":"31-33"},"PeriodicalIF":0.4,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89186799","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}

{"title":"Probing the Discs of Herbig Ae/Be Stars at Terrestrial Orbits","authors":"R. Abuter, M. Accardo, T. Adler, A. Amorim, N. Anugu, G. Ávila, M. Bauböck, M. Benisty, J. Berger, J. Bestenlehner, H. Beust, N. Blind, M. Bonnefoy, H. Bonnet, P. Bourget, J. Bouvier, W. Brandner, R. Brast, A. Buron, L. Burtscher, F. Cantalloube, A. C. O. Garatti, P. Caselli, F. Cassaing, F. Chapron, B. Charnay, É. Choquet, Y. Clénet, C. Collin, V. C. Foresto, R. Davies, C. Deen, F. Delplancke-Ströbele, R. Dembet, F. Dérie, W. D. Wit, J. Dexter, T. Zeeuw, C. Dougados, G. Dubus, G. Duvert, M. Ebert, A. Eckart, F. Eisenhauer, M. Esselborn, F. Eupen, P. Fédou, M. Ferreira, G. Finger, N. F. Schreiber, F. Gao, C. G. Dabo, R. G. López, P. Garcia, E. Gendron, R. Genzel, O. Gerhard, J. Gil, S. Gillessen, F. Gonté, P. Gordo, D. Gratadour, A. Greenbaum, R. Grellmann, U. Grözinger, P. Guajardo, S. Guieu, M. Habibi, P. Haguenauer, O. Hans, X. Haubois, M. Haug, F. Haussmann, T. Henning, S. Hippler, S. Hönig, M. Horrobin, A. Huber, Z. Hubert, N. Hubin, C. Hummel, G. Jakob, A. Janssen, A. Rosales, L. Jochum, L. Jocou, J","doi":"10.18727/0722-6691/5173","DOIUrl":"https://doi.org/10.18727/0722-6691/5173","url":null,"abstract":"More than 4000 exoplanets are known to date in systems that differ greatly from our Solar System. In particular, inner exoplanets tend to follow orbits around their parent star that are much more compact than that of Earth. These systems are also extremely diverse, covering a range of intrinsic properties. Studying the main physical processes at play in the innermost regions of the protoplanetary discs is crucial to understanding how these planets form and migrate so close to their host. With GRAVITY, we focused on the study of near-infrared emission of a sample of young intermediatemass stars, the Herbig Ae/Be stars.","PeriodicalId":41738,"journal":{"name":"Jurnal The Messenger","volume":"21 1","pages":"38-40"},"PeriodicalIF":0.4,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79130326","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}