Zobrazeno 1 - 10
of 31
pro vyhledávání: '"Vladimir Escalante"'
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 426:2318-2334
We compare calculated intensities of lines of C ii, N i, N ii, O i and O ii with a published deep spectroscopic survey of IC 418. Our calculations use a self-consistent nebular model and a synthetic spectrum of the central star atmosphere to take int
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::48ad265e5e315142656ef639e51da480
https://doi.org/10.1111/j.1365-2966.2012.21862.x
https://doi.org/10.1111/j.1365-2966.2012.21862.x
Autor:
G. A. Victor, Vladimir Escalante
Publikováno v:
Atomic Data and Nuclear Data Tables. 56:213-229
Photoionization cross sections and oscillator strengths for bound-bound transitions are presented for excited states of atomic oxygen with the ground-term core configuration. Principal quantum numbers up to 12, orbital angular momentum quantum number
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6be8aebe561227a56c5d0a0e647f31a9
https://doi.org/10.1006/adnd.1994.1006
https://doi.org/10.1006/adnd.1994.1006
Publikováno v:
NASA Astrophysics Data System
We predict intensities of lines of CII, NI, NII, OI and OII and compare them with a deep spectroscopic survey of IC 418 to test the effect of excitation of nebular emission lines by continuum fluorescence of starlight. Our calculations use a nebular
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4a368c15e5e0e8dac79ecfc0d65c18bb
http://arxiv.org/abs/1109.6743
http://arxiv.org/abs/1109.6743
Autor:
G. A. Victor, Vladimir Escalante
Publikováno v:
Planetary and Space Science. 40:1705-1717
Effective radiative recombination coefficients are calculated for atomic oxygen using an atomic model potential to obtain accurate non-hydrogenic transition probabilities of singly excited states. Results are presented for many lines for temperatures
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7c3955049740f15239b81b67241d3aec
https://doi.org/10.1016/0032-0633(92)90127-a
https://doi.org/10.1016/0032-0633(92)90127-a
Autor:
Vladimir Escalante, G. A. Victor
Publikováno v:
Atomic Data and Nuclear Data Tables. 51:1-57
Results for theoretical open-shell model potential calculations for photoionization of excited states of neutral atomic carbon and singly ionized nitrogen are presented. Principal quantum numbers up to 12 and orbital angular momentum quantum numbers
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7eeb1af616d32f3c875003731f51e6ff
https://doi.org/10.1016/0092-640x(92)90014-9
https://doi.org/10.1016/0092-640x(92)90014-9
Publikováno v:
Mapping the Galaxy and Nearby Galaxies ISBN: 9780387727677
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fd560a136b862351d8cd7042c3b591a2
https://doi.org/10.1007/978-0-387-72768-4_108
https://doi.org/10.1007/978-0-387-72768-4_108
We report observations of the dust cloud L1204 with the Onsala 25-m telescope in the 6 cm (1$_{11}-1_{10}$) transition of \htco. The observed region includes the S140 H${\alpha}$ arc. This spectral line is seen here in absorption against the cosmic m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a36301129682ef8d0a6880aa45784988
Autor:
Yolanda Gómez, Mayra Lebrón, Luis F. Rodríguez, Susana Lizano, Vladimir Escalante, Guido Garay, Jorge Cantó
Publikováno v:
Universidad Nacional Autónoma de México
UNAM
Redalyc-UNAM
Revista Mexicana de Astronomía y Astrofísica (México) Vol.11
UNAM
Redalyc-UNAM
Revista Mexicana de Astronomía y Astrofísica (México) Vol.11
"We present VLA continuum (2, 3.6 and 20 cm) and line (H~I 21 cm, H92alpha and C92alpha) observations toward the cometary-like H~II region near the optical nebulosities GGD~12--15. The hydrogen recombination line (RRL) observations show that the ioni
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::dc90be2610100d90a2e2fe7cc61a18f0
https://www.redalyc.org/articulo.oa?id=57101124
https://www.redalyc.org/articulo.oa?id=57101124
Publikováno v:
Symposium - International Astronomical Union. 150:333-334
Detailed calculations are reported of the intensities of the near infrared forbidden lines of neutral carbon atoms at λ 985.0 nm, 982.3 nm and 872.7 nm emitted from dense clouds subjected to intense radiation fields. The metastable levels that produ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aa52582c770c6367d4bc3dfec6d7d9e7
https://doi.org/10.1017/s007418090009029x
https://doi.org/10.1017/s007418090009029x
Autor:
Vladimir Escalante
Publikováno v:
Publications of the Astronomical Society of the Pacific. 103:838
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::34299a8d2cae4f00b9ae72685834f62c
https://doi.org/10.1086/132890
https://doi.org/10.1086/132890