Zobrazeno 1 - 10
of 2 182
pro vyhledávání: '"STAR-FORMING REGIONS"'
Publikováno v:
The Astrophysical Journal Letters, Vol 972, Iss 1, p L16 (2024)
We report evidence of a hidden black hole (BH) in a low-mass galaxy, MaNGA 9885-9102, and provide a new method to identify active BHs in low-mass galaxies. This galaxy is originally selected from the MaNGA survey with distinctive bipolar H α blobs a
Externí odkaz:
https://doaj.org/article/87d0dcd183c745d2b94cf91a2a94014c
Publikováno v:
The Astrophysical Journal Letters, Vol 972, Iss 1, p L9 (2024)
Planet formation occurs over a few Myr within protoplanetary disks of dust and gas, which are often assumed to evolve in isolation. However, extended gaseous structures have been uncovered around many protoplanetary disks, suggestive of late-stage in
Externí odkaz:
https://doaj.org/article/5399e511a361421990271bd566ad994c
Autor:
Maksim Ozhiganov, Mikhail Medvedev, Varvara Karteyeva, Ruslan Nakibov, Uliana Sapunova, Vadim Krushinsky, Ksenia Stepanova, Anastasia Tryastsina, Aleksandr Gorkovenko, Gleb Fedoseev, Anton Vasyunin
Publikováno v:
The Astrophysical Journal Letters, Vol 972, Iss 1, p L10 (2024)
Hydrogen cyanide (HCN) molecules serve as an important tracer for the chemical evolution of elemental nitrogen in the regions of star and planet formation. This is largely explained by the fact that N atoms and N _2 molecules are poorly accessible fo
Externí odkaz:
https://doaj.org/article/efbfe524122e4dec8aac84893b9e467e
Autor:
Anindya Saha, Anandmayee Tej, Hong-Li Liu, Tie Liu, Guido Garay, Paul F. Goldsmith, Chang Won Lee, Jinhua He, Mika Juvela, Leonardo Bronfman, Tapas Baug, Enrique Vázquez-Semadeni, Patricio Sanhueza, Shanghuo Li, James O. Chibueze, N. K. Bhadari, Lokesh K. Dewangan, Swagat Ranjan Das, Feng-Wei Xu, Namitha Issac, Jihye Hwang, L. Viktor Tóth
Publikováno v:
The Astrophysical Journal Letters, Vol 970, Iss 2, p L40 (2024)
Using new continuum and molecular line data from the Atacama Large Millimeter/submillimeter Array Three-millimeter Observations of Massive Star-forming Regions (ATOMS) survey and archival Very Large Array, 4.86 GHz data, we present direct observation
Externí odkaz:
https://doaj.org/article/4281b39612e345258e6c09d6a52d6cfb
Autor:
Vaidehi S. Paliya, D. J. Saikia
Publikováno v:
The Astrophysical Journal Letters, Vol 967, Iss 2, p L26 (2024)
The astrophysical γ -ray photons carry the signatures of the violent phenomena happening on various astronomical scales in our Universe. This includes supernova remnants, pulsars, and pulsar wind nebulae in the Galactic environment and extragalactic
Externí odkaz:
https://doaj.org/article/3ff39aa7f1954eeeb71f8528a1cdb268
Autor:
Michael G. Jones, Steven Janowiecki, Swapnaneel Dey, David J. Sand, Paul Bennet, Denija Crnojević, Catherine E. Fielder, Ananthan Karunakaran, Brian R. Kent, Nicolas Mazziotti, Burçin Mutlu-Pakdil, Kristine Spekkens
Publikováno v:
The Astrophysical Journal Letters, Vol 966, Iss 1, p L15 (2024)
We have discovered the stellar counterpart to the ALFALFA Virgo 7 cloud complex, which has been thought to be optically dark and nearly star-free since its discovery in 2007. This ∼190 kpc long chain of enormous atomic gas clouds ( M _H _i ∼ 10 ^
Externí odkaz:
https://doaj.org/article/d3cbdc41f200476a82d68264510b016a
Autor:
Xiaofeng Mai, Tie Liu, Xunchuan Liu, Lei Zhu, Guido Garay, Paul F. Goldsmith, Mika Juvela, Hongli Liu, Emma Mannfors, Anandmayee Tej, Patricio Sanhueza, Shanghuo Li, Fengwei Xu, Enrique Vazquez Semadeni, Wenyu Jiao, Yaping Peng, T. Baug, Aiyuan Yang, Lokesh Dewangan, Leonardo Bronfman, Gilberto C. Gómez, Aina Palau, Chang Won Lee, Sheng-Li Qin, Ken’ichi Tatematsu, James O. Chibueze, Dongting Yang, Xing Lu, Qiuyi Luo, Qilao Gu, Namitha Issac, Suinan Zhang, Pak-Shing Li, Bo Zhang, L. Viktor Tóth
Publikováno v:
The Astrophysical Journal Letters, Vol 961, Iss 2, p L35 (2024)
Only a handful of massive starless core candidates have been discovered so far, but none of them have been fully confirmed. Within the MM1 clump in the filamentary infrared dark cloud G34.43+0.24 that was covered by the Atacama Large Millimeter/submi
Externí odkaz:
https://doaj.org/article/a6dc87487ce242908bb19ed1ca15b39f
Autor:
Mina Pak, Junhyun Baek, Joon Hyeop Lee, Aeree Chung, Matt Owers, Hyunjin Jeong, Eon-Chang Sung, Yun-Kyeong Sheen
Publikováno v:
The Astrophysical Journal Letters, Vol 961, Iss 1, p L11 (2024)
We present the discovery of a new H i structure in the NGC 7194 group from the observations using the Karl G. Jansky Very Large Array. NGC 7194 group is a nearby ( z ∼ 0.027) small galaxy group with five quiescent members. The observations reveal a
Externí odkaz:
https://doaj.org/article/b4d34742fffd49dd8ef53a57279f7d6e
Autor:
Roberto Galván-Madrid, Daniel J. Díaz-González, Frédérique Motte, Adam Ginsburg, Nichol Cunningham, Karl M. Menten, Mélanie Armante, Mélisse Bonfand, Jonathan Braine, Timea Csengeri, Pierre Dell’Ova, Fabien Louvet, Thomas Nony, Rudy Rivera-Soto, Patricio Sanhueza, Amelia M. Stutz, Friedrich Wyrowski, Rodrigo H. Álvarez-Gutiérrez, Tapas Baug, Sylvain Bontemps, Leonardo Bronfman, Manuel Fernández-López, Antoine Gusdorf, Atanu Koley, Hong-Li Liu, Javiera Salinas, Allison P. M. Towner, Anthony P. Whitworth
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 274, Iss 1, p 15 (2024)
We use the H41 α recombination line to create templates of the millimeter free–free emission in the ALMA-IMF continuum maps, which allows us to separate it from dust emission. This method complements spectral-index information and extrapolation fr
Externí odkaz:
https://doaj.org/article/0b10ed6f258143538914748f231323c6
Autor:
Vineet Rawat, M. R. Samal, D. K. Ojha, Brajesh Kumar, Saurabh Sharma, J. Jose, Ram Sagar, R. K. Yadav
Publikováno v:
The Astronomical Journal, Vol 168, Iss 3, p 136 (2024)
We present a detailed near-infrared study of an embedded cluster located in the hub of the giant molecular cloud G148.24+00.41 of mass ∼10 ^5 M _⊙ , with the TANSPEC instrument mounted on the 3.6 m Devasthal Optical Telescope. The hub is located
Externí odkaz:
https://doaj.org/article/e3686de6d3b74e0b8502b3c519d20dbd