Zobrazeno 1 - 10
of 271
pro vyhledávání: '"Ortega, M. E."'
Most of the $\gamma$-ray sources in the Fermi-LAT 14-year Source Catalogue are associated with pulsars and blazars. However, unveiling the nature of the still unassociated $\gamma$-ray sources is important for the understanding of high energy emissio
Externí odkaz:
http://arxiv.org/abs/2406.03219
In previous works, we have investigated the star-forming region G29.96$-$0.02 where the massive young stellar object (MYSO) G29.862$-$0.0044 (hereafter G29) is embedded in a hot molecular core. In one of them, of multiwavelength nature, using data fr
Externí odkaz:
http://arxiv.org/abs/2406.02358
Publikováno v:
A&A 677, A129 (2023)
We present a comprehensive physical and chemical study of the fragmentation and star formation activity towards the massive clump AGAL G338.9188+0.5494 harbouring the extended green object EGO 338.92+0.55(b). The presence of an EGO embedded in a mass
Externí odkaz:
http://arxiv.org/abs/2307.03644
Autor:
Paron, S., Mast, D., Fariña, C., Areal, M. B., Ortega, M. E., Martinez, N. C., Peña, M. Celis
Publikováno v:
A&A 666, A105 (2022)
In addition to the large surveys and catalogs of massive young stellar objects and outflows, dedicated studies of particular sources, in which high-angular observations (mainly at near-IR and mm) are analyzed in depth, are needed to shed light on the
Externí odkaz:
http://arxiv.org/abs/2208.03200
It is known that massive stars form as result of the fragmentation of molecular clumps. However, what is not clear is whether this fragmentation gives rise to cores massive enough to form directly high-mass stars, or leads to cores of low and interme
Externí odkaz:
http://arxiv.org/abs/2112.13735
Publikováno v:
A&A 653, A77 (2021)
The cyano radical (CN), one of the first detected interstellar molecular species, is a key molecule in many astrochemical chains. Particularly, it is detected towards molecular cores, the birth places of the stars, and it is known that it is involved
Externí odkaz:
http://arxiv.org/abs/2107.11426
Publikováno v:
A&A 649, A139 (2021)
The fragmentation of a molecular cloud that leads to the formation of high-mass stars occurs on a hierarchy of different spatial scales. The large molecular clouds harbour massive molecular clumps with massive cores embedded in them. The fragmentatio
Externí odkaz:
http://arxiv.org/abs/2103.04965
Publikováno v:
A&A 641, A104 (2020)
Massive molecular clumps fragment into cores where star formation takes place, hence star-forming studies should be done at different spatial scales. Using near-IR data obtained with Gemini, data of CH3OCHO and CH3CN from the ALMA database, observati
Externí odkaz:
http://arxiv.org/abs/2007.07852
Evidence for triggered star formation linking three generations of stars is difficult to assemble, as it requires convincingly associating evolved massive stars with Hii regions that, in turn, would need to present signs of active star formation. We
Externí odkaz:
http://arxiv.org/abs/2006.00120
Publikováno v:
A&A 633, A27 (2020)
Cometary globules, dense molecular gas structures exposed to the UV radiation, are found inside HII regions. Understanding the nature and origin of these structures through a kinematic study of the molecular gas is useful to advance in our knowledge
Externí odkaz:
http://arxiv.org/abs/1911.06604