Results 41 to 50 of about 4,978 (213)

The Mass Accretion Rate and Stellar Properties in Class I Protostars

The Astrophysical Journal, 2023
Stars collect most of their mass during the protostellar stage, yet the accretion luminosity and stellar parameters, which are needed to compute the mass accretion rate, are poorly constrained for the youngest sources.
Eleonora Fiorellino, Łukasz Tychoniec, Fernando Cruz-Sáenz de Miera, Simone Antoniucci, Ágnes Kóspál, Carlo F. Manara, Brunella Nisini, Giovanni Rosotti   +7 more
doaj   +1 more source

N-bearing complex organics toward high-mass protostars [PDF]

, 2022
Context. Complex organic species are known to be abundant toward low- and high-mass protostars. No statistical study of these species toward a large sample of high-mass protostars with the Atacama Large Millimeter/submillimeter Array (ALMA) has been ...
Beltran, M. T., Ahmadi, M., N. F. W. Ligterink, Ligterink, N.F.W., Beltrán, M.T., G. A. Fuller, Ligterink, N., Sánchez-Monge, Á., Meijerhof, J., Fuller, Gary; id_orcid, D. Langeroodi, P. Schilke, Tabone, B., Schilke, P., Fuller, G. A., Meijerhof, J.D., van Gelder, M. L., Dishoeck, E., M. T. Beltrán, van Dishoeck, E. F., J. D. Meijerhof, Dishoeck, E.F. van, A. Ahmadi, Fuller, G., BELTRAN SOROLLA, Maria Teresa, E. F. van Dishoeck, Fuller, G.A., Ahmadi, A., M. L. van Gelder, P. Nazari, van Gelder, M., Á. Sánchez-Monge, B. Tabone, Beltrán, M., Nazari, P., Jaspers, J., J. Jaspers, Langeroodi, D., Ligterink, N. F. W., Gelder, M.L. van, Meijerhof, J. D.   +40 more
core   +1 more source

Asian Pacific Association of Gastroenterology (APAGE) Clinical Practice Guidelines on the Use of Small Molecules and IL‐23 p19 Inhibitors in Ulcerative Colitis and Crohn's Disease

Journal of Gastroenterology and Hepatology, Volume 41, Issue 7, Page 2006-2029, July 2026.
ABSTRACT Ulcerative colitis (UC) and Crohn's disease (CD) are increasingly prevalent in the Asia Pacific region, necessitating updated, region‐specific guidance on advanced therapies. Targeted small molecule agents, such as filgotinib, tofacitinib, upadacitinib, etrasimod, and ozanimod; and the IL‐23 p19 inhibitors (guselkumab, mirikizumab ...
Choon Jin Ooi, Khoon Lin Ling, Julajak Limsrivilai, Shu‐Chen Wei, Joyce Wing Yan Mak, Taku Kobayashi, Luan Minh Dang, Rupert W. Leong, Huiyu Lin, Meng‐Tzu Weng, Wan Chee Ong, Vineet Ahuja, Satimai Aniwan, Ryota Hokari, Wei Jie Jonathan Lee, Alex Hwong‐Ruey Leow, Wai‐Keung Leung, Wee‐Chian Lim, Govind Makharia, Katsuyoshi Matsuoka, Nazri Mustaffa, Siew‐Chien Ng, Mathew Philip, Pises Pisespongsa, Raja Affendi Raja Ali, Zhi Hua Ran, Marcellus Simadibrata, Jose Sollano, Malcolm Tan, Hang Dao Viet, Nik Razima Wan Ibrahim, Kai Chun Wu, Byong Duk Ye, Ida Hilmi, Asian Pacific Association of Gastroenterology (APAGE) Inflammatory Bowel Disease Committee and Asian Education Network in IBD (AEN‐IBD)   +34 more
wiley   +1 more source

PROTOSTARS AT LOW EXTINCTION IN ORION A [PDF]

The Astrophysical Journal, 2016
ABSTRACT In the list of young stellar objects (YSOs) compiled by Megeath et al. for the Orion A molecular cloud, only 44 out of 1208 sources found projected onto low extinction ( mag) gas are identified as protostars.
John Arban Lewis, Charles J. Lada
openaire   +2 more sources

The Role of Benzonitrile Chlorination Explored by Dissociative Electron Attachment

ChemPhysChem, Volume 27, Issue 9, 14 May 2026.
Experimental and theoretical dissociative electron attachment study of 2‐ and 4‐chlorobenzonitrile. The dissociative electron attachment process to ortho‐ and para‐chlorobenzonitrile was investigated in the 0–12 eV energy range with a crossed‐beam time‐of‐flight mass spectrometer, supported by quantum chemical scattering calculations.
Pedro Guerra, Mónica Mendes, Ely G. F. de Miranda, Rodrigo Rodrigues, Lucas M. Cornetta, Filipe Ferreira da Silva   +5 more
wiley   +1 more source

Searching for Molecular Jets from High-mass Protostars

The Astrophysical Journal Supplement Series, 2023
We report Very Large Array observations in the Q band toward 10 ionized jet candidates to search for SiO emission, a well-known shocked gas tracer. We detected 7 mm continuum counterparts toward 90% of the jet candidates. In most cases, the jet candidate
Tatiana M. Rodríguez, Peter Hofner, Isaac Edelman, Esteban D. Araya, Viviana Rosero   +4 more
doaj   +1 more source

Accretion onto a primordial protostar [PDF]

New Astronomy, 2004
New Astronomy, in press, June 2004, vol.9, pp.353 ...
Bromm, Volker, Loeb, Abraham
openaire   +2 more sources

Activity of protostars and brown dwarfs

, 2003
The first evidences for magnetic activity in low-mass protostars and brown dwarfs were found in the mid-1990's by the old generation of X-ray satellites, namely ROSAT and ASCA.
N. Grosso, Grosso, N.
core   +1 more source

Small‐scale elemental abundance variations in Ryugu particles from touchdown 1

Meteoritics &Planetary Science, Volume 61, Issue 4, Page 580-599, April 2026.
Abstract Ryugu materials closely resemble CI chondrites' mineralogical, chemical, and isotopic compositions; yet minor but resolvable differences in certain elemental abundances are evident. In this study, the bulk chemical compositions of eight individual Ryugu particles (1.5–4.3 mg) from the first touchdown site (TD1) were determined using triple ...
Karina López García, Tetsuya Yokoyama, Ikshu Gautam, Makiko K. Haba, Tsuyoshi Iizuka, Nao Nakanishi, Ryota Fukai   +6 more
wiley   +1 more source

Characterizing Magnetic Properties of Young Protostars in Orion

The Astrophysical Journal
The B -field Orion Protostellar Survey (BOPS) recently obtained polarimetric observations at 870 μ m toward 61 protostars in the Orion molecular clouds with ∼1″ spatial resolution using the Atacama Large Millimeter/submillimeter Array.
Bo Huang, Josep M. Girart, Ian W. Stephens, Philip C. Myers, Qizhou Zhang, Paulo Cortes, Álvaro Sánchez-Monge, Manuel Fernández López, Valentin J. M. Le Gouellec, Tom Megeath, Nadia M. Murillo, John M. Carpenter, Zhi-Yun Li, Junhao Liu, Leslie W. Looney, Sarah Sadavoy, Nicole Karnath, Woojin Kwon   +17 more
doaj   +1 more source