Zobrazeno 1 - 10
of 279
pro vyhledávání: '"Mark R. Krumholz"'
Autor:
Shyam H. Menon, Lachlan Lancaster, Blakesley Burkhart, Rachel S. Somerville, Avishai Dekel, Mark R. Krumholz
Publikováno v:
The Astrophysical Journal Letters, Vol 967, Iss 2, p L28 (2024)
The observed rest-UV luminosity function at cosmic dawn ( z ∼ 8–14) measured by JWST revealed an excess of UV-luminous galaxies relative to many prelaunch theoretical predictions. A high star formation efficiency (SFE) and a top-heavy initial mas
Externí odkaz:
https://doaj.org/article/de99a4d9442b46ad92e36ac9a6ff720e
Publikováno v:
The Astrophysical Journal, Vol 973, Iss 1, p 16 (2024)
Cosmic rays (CRs) are the primary driver of ionization in star-forming molecular clouds (MCs). Despite their potential impacts on gas dynamics and chemistry, no simulations of star cluster formation following the creation of individual stars have inc
Externí odkaz:
https://doaj.org/article/8ba640cd739e4526a5a94af7d09f0a6f
Autor:
Daniela Calzetti, Angela Adamo, Sean T. Linden, Benjamin Gregg, Mark R. Krumholz, Varun Bajaj, Arjan Bik, Michele Cignoni, Matteo Correnti, Bruce Elmegreen, Helena Faustino Vieira, John S. Gallagher, Kathryn Grasha, Robert A. Gutermuth, Kelsey E. Johnson, Matteo Messa, Jens Melinder, Göran Östlin, Alex Pedrini, Elena Sabbi, Linda J. Smith, Monica Tosi
Publikováno v:
The Astrophysical Journal, Vol 971, Iss 1, p 118 (2024)
New JWST near-infrared imaging of the nearby galaxy NGC 628 from the JWST Cycle 1 program Feedback in Emerging extrAgalactic Star clusTers (JWST-FEAST) is combined with archival JWST mid-infrared imaging to calibrate the 21 μ m emission as a star fo
Externí odkaz:
https://doaj.org/article/c85bed677d1f4016950bdfd73bee7c6f
Autor:
Benjamin Gregg, Daniela Calzetti, Angela Adamo, Varun Bajaj, Jenna E. Ryon, Sean T. Linden, Matteo Correnti, Michele Cignoni, Matteo Messa, Elena Sabbi, John S. Gallagher, Kathryn Grasha, Alex Pedrini, Robert A. Gutermuth, Jens Melinder, Ralf Kotulla, Gustavo Pérez, Mark R. Krumholz, Arjan Bik, Göran Östlin, Kelsey E. Johnson, Giacomo Bortolini, Linda J. Smith, Monica Tosi, Subhransu Maji, Helena Faustino Vieira
Publikováno v:
The Astrophysical Journal, Vol 971, Iss 1, p 115 (2024)
We present maps of ionized gas (traced by Pa α and Br α ) and 3.3 μ m polycyclic aromatic hydrocarbon (PAH) emission in the nearby spiral galaxy NGC 628, derived from new JWST/NIRCam data from the Feedback in Emerging extrAgalactic Star clusTers (
Externí odkaz:
https://doaj.org/article/385c1b82d6d5430e93e77d9aea6bb156
Autor:
Molly K. Finn, Kelsey E. Johnson, Remy Indebetouw, Allison H. Costa, Angela Adamo, Alessandra Aloisi, Lauren Bittle, Daniela Calzetti, Daniel A. Dale, Clare L. Dobbs, Jennifer Donovan Meyer, Bruce G. Elmegreen, Debra M. Elmegreen, Michele Fumagalli, J. S. Gallagher, Kathryn Grasha, Eva K. Grebel, Robert C. Kennicutt, Mark R. Krumholz, Janice C. Lee, Matteo Messa, Preethi Nair, Elena Sabbi, Linda J. Smith, David A. Thilker, Bradley C. Whitmore, Aida Wofford
Publikováno v:
The Astrophysical Journal, Vol 964, Iss 1, p 12 (2024)
We present a comparative study of the molecular gas in two galaxies from the Legacy ExtraGalactic UV Survey (LEGUS) sample: barred spiral NGC 1313 and flocculent spiral NGC 7793. These two galaxies have similar masses, metallicities, and star formati
Externí odkaz:
https://doaj.org/article/76d82a4de6ed4e48b5de1ddd4c0f8928
Autor:
Molly K. Finn, Kelsey E. Johnson, Remy Indebetouw, Allison H. Costa, Angela Adamo, Alessandra Aloisi, Lauren Bittle, Daniela Calzetti, Daniel A. Dale, Clare L. Dobbs, Jennifer Donovan Meyer, Bruce G. Elmegreen, Debra M. Elmegreen, Michele Fumagalli, J. S. Gallagher, Kathryn Grasha, Eva K. Grebel, Robert C. Kennicutt, Mark R. Krumholz, Janice C. Lee, Matteo Messa, Preethi Nair, Elena Sabbi, Linda J. Smith, David A. Thilker, Bradley C. Whitmore, Aida Wofford
Publikováno v:
The Astrophysical Journal, Vol 964, Iss 1, p 13 (2024)
We compare the molecular cloud properties in subgalactic regions of two galaxies, barred spiral NGC 1313, which is forming many massive clusters, and flocculent spiral NGC 7793, which is forming significantly fewer massive clusters despite having a s
Externí odkaz:
https://doaj.org/article/f3961886b25a4c3fa93834f472c82c40
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 9 (2022)
The interstellar medium (ISM) of star-forming galaxies is magnetized and turbulent. Cosmic rays (CRs) propagate through it, and those with energies from ∼ GeV − TeV are likely subject to the streaming instability, whereby the wave damping process
Externí odkaz:
https://doaj.org/article/b097df1b67594f2fb89c7f2f5452b5d0
Autor:
Dooseok Escher Jung, Daniela Calzetti, Matteo Messa, Mark Heyer, Mattia Sirressi, Sean T. Linden, Angela Adamo, Rupali Chandar, Michele Cignoni, David O. Cook, Clare L. Dobbs, Bruce G. Elmegreen, Aaron S. Evans, Michele Fumagalli, John S. Gallagher III, Deidre A. Hunter, Kelsey E. Johnson, Robert C. Kennicutt Jr., Mark R. Krumholz, Daniel Schaerer, Elena Sabbi, Linda J. Smith, Monica Tosi, Aida Wofford
Publikováno v:
The Astrophysical Journal, Vol 954, Iss 2, p 136 (2023)
We investigate the variation in the upper end of the stellar initial mass function (uIMF) in 375 young and compact star clusters in five nearby galaxies within ∼5 Mpc. All the young stellar clusters (YSCs) in the sample have ages ≲ 4 Myr and mass
Externí odkaz:
https://doaj.org/article/40f7020e80f3489ca08993207243facb
Autor:
John C. Forbes, Razieh Emami, Rachel S. Somerville, Shy Genel, Dylan Nelson, Annalisa Pillepich, Blakesley Burkhart, Greg L. Bryan, Mark R. Krumholz, Lars Hernquist, Stephanie Tonnesen, Paul Torrey, Viraj Pandya, Christopher C. Hayward
Publikováno v:
The Astrophysical Journal, Vol 948, Iss 2, p 107 (2023)
The driving of turbulence in galaxies is deeply connected with the physics of feedback, star formation, outflows, accretion, and radial transport in disks. The velocity dispersion of gas in galaxies therefore offers a promising observational window i
Externí odkaz:
https://doaj.org/article/9a1677ede4f84555b3d3be95ec02f732
Autor:
Daniela Calzetti, Sean T. Linden, Timothy McQuaid, Matteo Messa, Zhiyuan Ji, Mark R. Krumholz, Angela Adamo, Bruce Elmegreen, Kathryn Grasha, Kelsey E. Johnson, Elena Sabbi, Linda J. Smith, Varun Bajaj
Publikováno v:
The Astrophysical Journal, Vol 946, Iss 1, p 1 (2023)
Multiwavelength images from the Hubble Space Telescope covering the wavelength range 0.27–1.6 μ m show that the central area of the nearby dwarf galaxy NGC 4449 contains several tens of compact sources that are emitting in the hydrogen recombinati
Externí odkaz:
https://doaj.org/article/385e2cb873e04d409f8099c549a19315