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CK Vul or Nova 1670 is an enigmatic eruptive object which underwent a stellar-merger event recorded by seventeenth-century observers. Its remnant was recently recovered at submillimeter wavelengths, revealing gas of an extraordinary isotopic composit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2667c9a35500ad8427b283b63e02d458
http://arxiv.org/abs/1907.05998
http://arxiv.org/abs/1907.05998
Autor:
T. Kamiński, K. T. Wong, R. Tylenda, Nimesh A. Patel, Andrea Mehner, M. R. Schmidt, Arnaud Belloche, Karl M. Menten
Publikováno v:
Astronomy & Astrophysics. 644:A59
CK Vul erupted in 1670 and is considered a stellar-merger candidate. Its remnant contains a molecular component of surprisingly rich composition. We present interferometric line surveys with subarcsec resolution with ALMA and SMA. The observations pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::61228acdb286d1728ca423ef40204a02
https://doi.org/10.1051/0004-6361/202038648
https://doi.org/10.1051/0004-6361/202038648
Autor:
R. Tylenda, Tomasz Kamiński, Nimesh A. Patel, Thomas F. Giesen, Karl M. Menten, Alexander A. Breier, Jan Martin Winters, Amanda I. Karakas, K. T. Wong
Decades ago, $\gamma$-ray observatories identified diffuse Galactic emission at 1.809 MeV originating from $\beta^+$ decays of an isotope of aluminium, $^{26}$Al, that has a mean-life time of 1.04 Myr. Objects responsible for the production of this r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b2bcd7b92b08d52f2ae8f4f44e0f01cb
http://arxiv.org/abs/1807.10647
http://arxiv.org/abs/1807.10647
Publikováno v:
The Astrophysical Journal Supplement Series. 182:33-50
V838 Mon erupted at the beginning of 2002 becoming an extremely luminous star. Among various scenarios proposed to explain the nature of the outburst the most promising is a stellar merger event. In this paper we investigate the observational propert
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0318ce393e068ac765d6244356612624
https://doi.org/10.1088/0067-0049/182/1/33
https://doi.org/10.1088/0067-0049/182/1/33
Publikováno v:
Astronomy & Astrophysics. 475:569-574
Aims. We investigate the structure of a field around the position of V838 Mon as seen in the lowest CO rotational transitions. We also measure and analyse emission in the same lines at the position of V838 Mon. Methods. Observations have primarily be
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8f89430d84c480c0163967f4338ae442
https://doi.org/10.1051/0004-6361:20077982
https://doi.org/10.1051/0004-6361:20077982
Autor:
R. Tylenda, Noam Soker
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 375:909-912
We study the expected X-ray luminosity of stellar merger products several years after merger. The X-ray emission is assumed to result from magnetic activity. The extended envelope of the merger product possesses a large convective region and it is ex
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f71f2f1a44c918272d44d207ccab343f
https://doi.org/10.1111/j.1365-2966.2006.11351.x
https://doi.org/10.1111/j.1365-2966.2006.11351.x
Autor:
Noam Soker, R. Tylenda
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 373:733-738
We derive the constraints on the mass ratio for a binary system to merge in a violent process. We find that the secondary to primary stellar mass ratio should be ~0.003 < (M_2/M_1) < ~0.15. A more massive secondary star will keep the primary stellar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0741f34a06957ce73759fed0413c2cf7
https://doi.org/10.1111/j.1365-2966.2006.11056.x
https://doi.org/10.1111/j.1365-2966.2006.11056.x
Publikováno v:
Astronomy & Astrophysics. 439:651-661
The eruption of V4332 Sgr discovered in February 1994 shows striking similarities to that of V838 Mon started in January 2002. The nature of these eruptions is, however, enigmatic and unclear. We present new photometric and spectroscopic data on V433
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cce8d89b331a79426600c2c2ad87cbfe
https://doi.org/10.1051/0004-6361:20041581
https://doi.org/10.1051/0004-6361:20041581
V4332 Sgr is a red transient (red nova) whose eruption was observed in 1994. The remnant of the eruption shows a unique optical spectrum: strong emission lines of atoms and molecules superimposed on an M-type stellar spectrum. The stellar-like remnan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e9b5b940c6f9e81779b1f50246a74278
http://arxiv.org/abs/1412.7822
http://arxiv.org/abs/1412.7822