@arXiv_astrophSR_bot@mastoxiv.page2024-03-07 07:23:16
The Emerging Stellar Complex in Mon R2: Membership and Optical Variability Classification
Sally D. Jiang, Lynne A. Hillenbrand
https://arxiv.org/abs/2403.03843
@arXiv_astrophGA_bot@mastoxiv.page2024-04-09 07:35:52
Search and study of young infrared stellar clusters
Naira Azatyan
https://arxiv.org/abs/2404.05413 https://arxiv.org/pdf/2404.05413…
@arXiv_astrophGA_bot@mastoxiv.page2024-03-06 07:15:47
Benchmarking the IRDC G351.77-0.53: Gaia DR3 distance, mass distribution, and star formation content
S. D. Reyes-Reyes, A. M. Stutz, S. T. Megeath, Fengwei Xu, R. H. \'Alvarez-Guti\'errez, N. Sandoval-Garrido, H. -L. Liu
https://arxiv.org/abs/2403.02456 https://arxiv.org/pdf/2403.02456
arXiv:2403.02456v1 Announce Type: new
Abstract: While intensively studied, it remains unclear how the star formation (SF) in Infrared Dark Clouds (IRDCs) compares to that of nearby clouds. We study G351.77-0.53 (henceforth G351), a cluster-forming filamentary IRDC. We begin by characterizing its young stellar object (YSO) content. Based on the average parallax of likely members, we obtain a Gaia distance of $\sim\,2.0\pm0.14$ kpc, resolving the literature distance ambiguity. Using our Herschel-derived N(H$_2$) map, we measure a total gas mass of 10200 M$_{\odot}$ (within 11 pc$^2$) and the average line-mass profile of the entire filament, which we model as $\lambda =~1660 (w/\rm pc )^{0.62}\,\,M_{\odot}\,\rm{pc}^{-1}$. At $w < 0.63$ pc, our $\lambda$ profile is higher and has a steeper power-law index than $\lambda$ profiles extracted in Orion A and most of its substructures. Based on the YSOs inside the filament area, we estimate the SF efficiency (SFE) and SF rate (SFR). We calculate a factor of 5 incompleteness correction for our YSO catalog relative to Spitzer surveys of Orion A. The G351 SFE is $\sim 1.8$ times lower than that of Orion A and lower than the median value for local clouds. We measure SFR and gas masses to estimate the efficiency per free-fall time, $\epsilon _{\rm ff}$. We find that $\epsilon_{\rm ff}$ is $\sim$ 1.1 dex below the previously proposed mean local relation, and $\sim\,4.7\times$ below Orion A. These observations indicate that local SF-relations do not capture variations present in the Galaxy. We speculate that cloud youth and/or magnetic fields might account for the G351 inefficiency.
@arXiv_astrophSR_bot@mastoxiv.page2024-03-29 07:00:08
Anatomy of the Class I protostar L1489 IRS with NOEMA -- I. Disk, streamers, outflow(s) and bubbles at 3mm
M. Tanious, R. Le Gal, R. Neri, A. Faure, A. Gupta, C. J. Law, J. Huang, N. Cuello, J. P. Williams, F. M\'enard
https://arxiv.org/abs/2403.18905
@arXiv_astrophGA_bot@mastoxiv.page2024-05-06 07:29:21
High-mass star formation across the Large Magellanic Cloud I. Chemical properties and hot molecular cores observed with ALMA at 1.2 mm
Roya Hamedani Golshan, \'Alvaro S\'anchez-Monge, Peter Schilke, Marta Sewi{\l}o, Thomas M\"oller, V. S. Veena, Gary A. Fuller
https://arxiv.org/abs/2405.01710
@arXiv_astrophSR_bot@mastoxiv.page2024-03-19 07:12:04
A survey for variable stars with small telescopes: IX - Evolution of Spot Properties on YSOs in IC5070
Carys Herbert, Dirk Froebrich, Siegfried Vanaverbeke, Aleks Scholz, Jochen Eisl\"offel, Thomas Urtly, Ivan L. Walton, Klaas Wiersema, Nick J. Quinn, Georg Piehler, Mario Morales Aimar, Rafael Castillo Garc\'ia, Tonny Vanmunster, Francisco C. Sold\'an Alfaro, Faustino Garc\'ia de la Cuesta, Domenico Licchelli, Alex Escartin Perez, Esteban Fern\'andez Ma\~nanes, Noe…
@arXiv_astrophSR_bot@mastoxiv.page2024-04-26 07:00:19
Young Stellar Objects in NGC 346: A JWST NIRCam/MIRI Imaging Survey
Nolan Habel, Conor Nally, Laura Lenkic, Margaret Meixner, Guido De Marchi, Patrick J. Kavanagh, Katja Fahrion, Omnarayani Nayak, Alec S. Hirschauer, Olivia C. Jones, Katia Biazzo, Bernhard R. Brandl, Jeroen Jaspers, Klaus M. Pontoppidan, Massimo Robberto, Ciaran Rogers, Elena Sabbi, B. A. Sargent, David R. Soderblom, Peter Zeidler
@arXiv_astrophGA_bot@mastoxiv.page2024-03-22 07:33:08
Search for protostellar jets with UWISH2 in the molecular cloud complexes Vulpecula and IRDC G53.2
Manish Chauhan, Manash Samal, Anandmayee Tej, Dirk Froebrich
https://arxiv.org/abs/2403.14615
@arXiv_astrophGA_bot@mastoxiv.page2024-03-22 07:33:08
Search for protostellar jets with UWISH2 in the molecular cloud complexes Vulpecula and IRDC G53.2
Manish Chauhan, Manash Samal, Anandmayee Tej, Dirk Froebrich
https://arxiv.org/abs/2403.14615
@arXiv_astrophGA_bot@mastoxiv.page2024-02-26 06:59:56
Updated kinematics of the Radcliffe Wave: non-synchronous, dipole-like vertical oscillations
Zhi-Kai Zhu, Min Fang, Zu-Jia Lu, Junzhi Wang, Guang-Xing Li, Shiyu Zhang, Veli-Matti Pelkonen, Paolo Padoan, En-Wei Liang
https://arxiv.org/abs/2402.15346
