Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Arshia M. Jacob"'
Autor:
Oliver Ricken, Christof Buchbender, C. H. M. Pabst, Robert Simon, Mark G. Wolfire, A. G. G. M. Tielens, Arshia M. Jacob, R. Higgins, Rolf Güsten, R. Karim, Nicola Schneider, C. Guevara, S. Kabanovic, M. Tiwari, Marc W. Pound, Juergen Stutzki
Publikováno v:
The Astrophysical Journal, 914(2)
We unveil the stellar wind driven shell of the luminous massive star-forming region of RCW 49 using SOFIA FEEDBACK observations of the [CII] 158 $\mu$m line. The complementary dataset of the $^{12}$CO and $^{13}$CO J = 3 - 2 transitions is observed b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::834215f978e8209be29a04e512bc24e6
http://arxiv.org/abs/2104.04276
http://arxiv.org/abs/2104.04276
Autor:
Y. Gong, Sandra Brünken, Per Bergman, M. Tiwari, Karl M. Menten, A. O. H. Olofsson, Arshia M. Jacob
Publikováno v:
Astronomy & Astrophysics, 647, pp. 1-24
Astronomy & Astrophysics, 647, 1-24
Astronomy & Astrophysics, 647, 1-24
CH2 transitions between 68 and 71 GHz were first detected toward the Orion-KL and W51 Main SFRs. Given their upper level energies of 225 K, they were thought to arise in dense, hot molecular cores near newly formed stars. However, this has not been c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eeba9d8d641f3b0bef8e96f20dc75dca
http://arxiv.org/abs/2101.02654
http://arxiv.org/abs/2101.02654
Measuring interstellar magnetic fields is extremely important for understanding their role in different evolutionary stages of interstellar clouds and of star formation. However, detecting the weak field is observationally challenging. We present mea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e540b18e4b9ad3e9ca2090bb3e776d09
http://arxiv.org/abs/2012.08253
http://arxiv.org/abs/2012.08253
Autor:
Rolf Güsten, Bernd Klein, Karl M. Menten, Helmut Wiesemeyer, Arshia M. Jacob, Friedrich Wyrowski
Publikováno v:
Astronomy & Astrophysics
A&A 640, A125 (2020)
A&A 640, A125 (2020)
In recent years, a plethora of observations with high spectral resolution of sub-millimetre and far-infrared transitions of methylidene (CH), conducted with Herschel and SOFIA, have demonstrated this radical to be a valuable proxy for molecular hydro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f59ee5eb4c713dc4d88a1834dd81fd75
Autor:
David A. Neufeld, Harshal Gupta, Peter Schilke, Arshia M. Jacob, Helmut Wiesemeyer, Rolf Güsten, Maryvonne Gerin, Mark J. Wolfire, Christof Buchbender
Publikováno v:
The Astrophysical Journal
The Astrophysical Journal, American Astronomical Society, 2021, 917 (2), pp.104. ⟨10.3847/1538-4357/ac06d3⟩
The Astrophysical Journal, American Astronomical Society, 2021, 917 (2), pp.104. ⟨10.3847/1538-4357/ac06d3⟩
We have revisited the chemistry of chlorine-bearing species in the diffuse interstellar medium with new observations of the HCl$^+$ molecular ion and new astrochemical models. Using the GREAT instrument on board SOFIA, we observed the $^2\Pi_{3/2}\,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2a70d9c3066474eaff19e8a022807629
https://doi.org/10.3847/1538-4357/ac06d3
https://doi.org/10.3847/1538-4357/ac06d3
Publikováno v:
Astronomy & Astrophysics. 650:A133
The intensities of the three widely observed radio-wavelength hyperfine structure (HFS) lines between the {\Lambda}-doublet components of the rotational ground state of CH are inconsistent with LTE and indicate ubiquitous population inversion. While
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ee6141c462faf529bd874c414ab06942
https://doi.org/10.1051/0004-6361/202140419
https://doi.org/10.1051/0004-6361/202140419
Context. Despite being a commonly observed feature, the modification of the velocity structure in spectral line profiles by hyperfine structure complicates the interpretation of spectroscopic data. This is particularly true for observations of simple
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f5455cc18f08bdb391f10937e9843f99
http://arxiv.org/abs/1911.00393
http://arxiv.org/abs/1911.00393
Publikováno v:
Astronomy & Astrophysics. 643:A91
One of the surprises of the Herschel mission was the detection of ArH+ towards the Crab Nebula in emission and in absorption towards strong Galactic background sources. Although these detections were limited to the first quadrant of the Galaxy, the e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9cdd84b6168bd4360be5178bd16f0b15
https://doi.org/10.1051/0004-6361/202039197
https://doi.org/10.1051/0004-6361/202039197
Autor:
C. Duran, Arshia M. Jacob, Timea Csengeri, Rolf Güsten, Friedrich Wyrowski, Helmut Wiesemeyer, J. Stutzki, Karl M. Menten, R. Simon
Publikováno v:
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, In press, ⟨10.1051/0004-6361/201731810⟩
Astronomy and Astrophysics-A&A, EDP Sciences, In press, ⟨10.1051/0004-6361/201731810⟩
The methylidyne radical CH is commonly used as a proxy for H$_2$ in the cold, neutral phase of the interstellar medium. The optical spectroscopy of CH is limited by interstellar extinction, whereas far-infrared observations provide an integral view t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1d2eda25bf33a29695203101fbfd8d08
https://hal.archives-ouvertes.fr/hal-01720599
https://hal.archives-ouvertes.fr/hal-01720599