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1. arXiv:2002.01811 Multi-Wavelength Approach for Detecting and Characterizing Young Quasars I: Systemic Redshifts and Proximity Zones Measurements Authors: Anna-Christina Eilers, Joseph F. Hennawi, Roberto Decarli, Frederick B. Davies, Bram Venemans, Fabian Walter, Eduardo Bañados, Xiaohui Fan, Emanuele P. Farina, Chiara Mazzucchelli, Mladen Novak, Jan-Torge Schindler, Robert A. Simcoe, Feige Wang, Jinyi Yang Abstract: A multi-wavelength survey of 13 quasars at 5:8 . z . 6:5, we find five objects with extremely small proximity zone sizes that may imply UV{luminous lifetimes of . 100; 000 years. Combined with previous results we estimate the fraction of young objects within the high{redshift quasar population at large to be 5% . fyoung . 9%. One of these objects, PSOJ158-14, at z=6.07,shows one of the brightest [C II] emission lines (Fline = 7:18 0:33 mJy) observed to date in high{redshift quasars, has a very strong dust continuum emission and indicates a highly star{bursting host galaxy with a star formation rate of approximately 1200M yr􀀀1 suggesting the presence of a starburst coeval with the SMBH growth.. AAS journals NA
2. arXiv:2002.01620 Sub-millimeter Detection of a Galactic Center Cool Star IRS 7 by ALMA Authors: Masato Tsuboi, Yoshimi Kitamura, Takahiro Tsutsumi, Ryosuke Miyawaki, Makoto Miyoshi, Atsushi Miyazaki Abstract:We detected firstly the continuum emission at 340 GHz of IRS 7 using ALMA. The total flux density of IRS 7 is Sν=448±45μJy. The flux density indicates that IRS 7 has a photosphere radius of R=1170±60 R⊙, which is roughly consistent with the previous VLTI measurement. We also detected a shell like feature with north extension in the H30α PASJ EA
3. arXiv:2002.01478 Constraining the Infalling Envelope Models of Embedded Protostars: BHR 71 and its Hot Corino Authors: Y. -L. Yang, N. J. Evans II, A. Smith, J. -E. Lee, J. J. Tobin, S. Terebey, H. Calcutt, J. K. Jorgensen, J. D. Green, T. L. Bourke Abstract: unambiguous signatures of infall, probed by optically thick molecular lines, toward an isolated embedded protostar, BHR71 IRS1. Modeling indicates that a slowly rotating infalling envelope model following the \inside-out" collapse reproduces the observations. The ALMA observations serendipitously discover the emission of complex organic molecules (COMs) concentrated within a radius of 100 au, indicating that BHR 71 IRS1 harbors a hot corino. Eight species of COMs are identified, The emission of methyl formate and 13C-methanol shows a clear velocity gradient within a radius of 50 au, hinting at an unresolved Keplerian rotating disk. ApJ NA
4. arXiv:2002.00979 The ALPINE-ALMA [CII] survey. No or weak evolution in the [CII]-SFR relation over the last 13 Gyr Authors: D. Schaerer, M. Ginolfi, M. Bethermin, Y. Fudamoto, P. A. Oesch, O. Le Fevre, A. Faisst, P. Capak, P. Cassata, J. D. Silverman, Lin Yan, G. C. Jones, R. Amorin, S. Bardelli, M. Boquien, A. Cimatti, M. Dessauges-Zavadsky, M. Giavalisco, N. P. Hathi, S. Fujimoto, E. Ibar, A. Koekemoer, G. Lagache, B. C. Lemaux, F. Loiacono , et al. (12 additional authors not shown) Abstract: ALPINE galaxies, which are both detected in [CII] and dust continuum, show a good agreement with the local L([CII])-SFR relation. Galaxies undetected in the continuum with ALMA are found to be over-luminous in [CII], when the UV SFR is used. Our analysis, which includes the largest sample ( 150 galaxies) of [C ii] measurements at z > 4 available so far, suggests no or little evolution of the [C ii]–SFR relation over the last 13 Gyr of cosmic time. Astronomy & Astrophysics Eu
5. arXiv:2002.00967 The ALPINE-ALMA [CII] survey: Small Lyα-[CII] velocity offsets in main-sequence galaxies at 4.4 < z < 6 Authors: P. Cassata, L. Morselli, A. Faisst, M. Ginolfi, M. Bethermin, P. Capak, O. Le Fevre, D. Schaerer, J. Silverman, L. Yan, B. C. Lemaux, M. Romano, M. Talia, S. Bardelli, M. Boquien, A. Cimatti, M. Dessauges-Zavadsky, Y. Fudamoto, S. Fujimoto, M. Giavalisco, N. Hathi, E. Ibar, G. Jones, A. M. Koekemoer, H. Mendez-Hernandez , et al. (8 additional authors not shown) Abstract: …UV and the [CII] line in the FIR are widely used tools to identify galaxies and to get insights about their ISM properties in the Early Universe. Combining data obtained with ALMA in band 7 as part of the… ▽ More A&A Eu
6. arXiv:2002.00962 The ALPINE-ALMA [CII] Survey: data processing, catalogs, and statistical source properties Authors: M. Bethermin, Y. Fudamoto, M. Ginolfi, F. Loiacono, Y. Khusanova, P. L. Capak, P. Cassata, A. Faisst, O. Le Fevre, D. Schaerer, J. D. Silverman, L. Yan, R. Amorin, S. Bardelli, M. Boquien, A. Cimatti, I. Davidzon, M. Dessauges-Zavadsky, S. Fujimoto, C. Gruppioni, N. P. Hathi, E. Ibar, G. C. Jones, A. M. Koekemoer, G. Lagache , et al. (10 additional authors not shown) Abstract: The ALPINE-ALMA large program targets the [CII] 158 μm line and the far-infrared continuum in 118 spectroscopically confirmed star-forming galaxies between z=4.4 and z=5.9. It represents the first large [CII] statistical sample built in this redshift range. We present details of the data processing and the construction of the catalogs. We detected 23 of ou… ▽ More A&A, Eu
7. arXiv:2002.00961 The ALPINE-ALMA [CII] Survey: On the nature of an extremely obscured serendipitous galaxy Authors: Michael Romano, P. Cassata, L. Morselli, B. C. Lemaux, M. Bethermin, P. Capak, A. Faisst, O. Le Fevre, D. Schaerer, J. Silverman, L. Yan, S. Bardelli, M. Boquien, A. Cimatti, M. Dessauges-Zavadsky, A. Enia, Y. Fudamoto, S. Fujimoto, M. Ginolfi, C. Gruppioni, N. P. Hathi, E. Ibar, G. C. Jones, A. M. Koekemoer, F. Loiacono , et al. (9 additional authors not shown) Abstract: We report the serendipitous discovery of a bright galaxy (Gal-A) observed as part of the ALMA Large Program to INvestigate [CII] at Early times (ALPINE). While this galaxy is detected both in line and continuum emission in ALMA B7 it is completely dark in UV/optical filters and only presents a marginal detection in the UltraVISTA Ks band. It is a dusty SFG at z = 4:6 (i.e. [CII] emitter) MNRAS Eu
8. arXiv:2002.00958 The ALMA view of the high redshift relation between supermassive black holes and their host galaxies Authors: A. Pensabene, S. Carniani, M. Perna, G. Cresci, R. Decarli, R. Maiolino, A. Marconi Abstract: From 72 quasar host galaxies observed in [CII]158m or CO transitions with the ALMA, a sample of 10 quasars at z 2 􀀀 7 in which line emission is detected by ALMA with high SNR (z 5 - 10) and the gas kinematics is spatially resolved and dominated by ordered rotation. The estimated dynamical masses place 6 out of 10 quasars above the local relation yielding to a MBH=Mdyn ratios ~10x higher than those estimated in low-z galaxies. On the other hand we found that 4 quasars at z 4~6 have dynamical-to-BH mass ratios consistent with what is observed in early type galaxies in the local Universe. A&A Eu
9. arXiv:2002.08640 [pdf, ps, other] astro-ph.GA astro-ph.CO The ALMA Spectroscopic Survey in the HUDF: The Cosmic Dust and Gas Mass Densities in Galaxies up to z∼3 Authors: Benjamin Magnelli, Leindert Boogaard, Roberto Decarli, Jorge Gónzalez-López, Mladen Novak, Gergö Popping, Ian Smail, Fabian Walter, Manuel Aravena, Roberto J. Assef, Franz Erik Bauer, Frank Bertoldi, Chris Carilli, Paulo C. Cortes, Elisabete da Cunha, Emanuele Daddi, Tanio Díaz-Santos, Hanae Inami, Robert J. Ivison, Olivier Le Fèvre, Pascal Oesch, Dominik Riechers, Hans-Walter Rix, Mark T. Sargent, Paul van der Werf , et al. (2 additional authors not shown) Abstract: Using the deepest 1.2 mm continuum map to date in the Hubble Ultra Deep Field obtained as part of the ALMA Spectroscopic Survey (ASPECS) large program, we measure the cosmic density of dust and implied gas (H2+H I) mass in galaxies as a function of look-back time. We do so by stacking the contribution from all H-band selected galaxies above a given st… ▽ More ApJ Eu
10.arXiv:2002.08508 How far actually is the Galactic Center IRS 13E3 from Sagittarius A∗? Authors: Masato Tsuboi, Yoshimi Kitamura, Takahiro Tsutsumi, Ryosuke Miyawaki, Makoto Miyoshi, Atsushi Miyazaki Abstract: …recombination line using ALMA. The enclosed mass is derived to be Mencl.≃2×104 M⊙, which agrees with an IMBH and is barely less than the astrometric upper limit mass of the IMBH around Sgr A∗. Because the limit mass depends on the true three-deminsional (3D) distance from Sgr A∗, it is very important to determine… ▽ More PASJ EA
11. arXiv:2002.08371 Measuring the Heating and Cooling of the Interstellar Medium at High redshift: PAH and [C II] Observations of the Same Star Forming Galaxies at z~2 Authors: Jed McKinney, Alexandra Pope, Lee Armus, Ranga-Ram Chary, Tanio Diaz-Santos, Mark E. Dickinson, Allison Kirkpatrick Abstract: …Hydrocarbon (PAH) emission, a tracer of a critical photoelectric heating mechanism in interstellar gas, and [C II] 158μm fine-structure emission, a principal coolant. We present ALMA Band 9 observations targeting [C II] in six z ~ 2 star-forming galaxies with strong Spitzer IRS detections of PAH emission. All six galaxies are detected in dust continuum and m… ▽ More The Astrophysical Journal, NA
12.arXiv:2002.07199 The ALMA Spectroscopic Survey in the HUDF: Deep 1.2 mm continuum number counts Authors: Jorge González-López, Mladen Novak, Roberto Decarli, Fabian Walter, Manuel Aravena, Leindert Boogaard, Gergö Popping, Axel Weiss, Roberto J. Assef, Franz Erik Bauer, Rychard Bouwens, Paulo C. Cortes, Pierre Cox, Emanuele Daddi, Elisabete da Cunha, Tanio Díaz-Santos, Rob Ivison, Benjamin Magnelli, Dominik Riechers, Ian Smail, Paul van der Werf, Jeff Wagg Abstract: We present the results from the 1.2 mm continuum image obtained as part of the ALMA Spectroscopic Survey in the Hubble Ultra Deep Field (ASPECS). The 1.2 mm continuum image has a size of 2.9 (4.2) arcmin2 within a primary beam response of 50% (10%) and a rms value of 9.3μJybeam−1. We detect 35 sources at high significance (F… ▽ More ApJ Chile
13.arXiv:2002.07186 Smoke on the water: CO and H2O in a circumnuclear disc around a quasar at redshift 2.64 Authors: H. R. Stacey, A. Lafontaine, J. P. McKean Abstract: We present an analysis of observations with the Atacama Large (sub-)Millimetre Array (ALMA) of the 380 GHz water emission line and CO (11-10) emission line from MG J0414+0534, a gravitationally lensed dusty star-forming galaxy that hosts a type 1 quasar. We also present observations at 1.6 GHz with global very long baseline interferometry (VLBI) of the radio… ▽ More MNRAS. Eu
14. arXiv:2002.07180 The ALMA Spectroscopic Survey in the HUDF: A model to explain observed 1.1 and 0.85 millimeter dust continuum number counts Authors: Gergö Popping, Fabian Walter, Peter Behroozi, Jorge González-López, Christopher C. Hayward, Rachel S. Somerville, Paul van der Werf, Manuel Aravena, Roberto J. Assef, Leindert Boogaard, Franz E. Bauer, Paulo C. Cortes, Pierre Cox, Tanio Díaz-Santos, Roberto Decarli, Maximilien Franco, Rob Ivison, Dominik Riechers, Hans-Walter Rix, Axel Weiss Abstract: We present a new semi-empirical model for the dust continuum number counts of galaxies at 1.1 millimeter and 850 \micron. Our approach couples an observationally motivated model for the stellar mass and SFR distribution of galaxies with empirical scaling relations to predict the dust continuum flux density of these galaxies. Without a need to tweak the IMF, the model reproduces the currently avail… ▽ More ApJ Eu
15. arXiv:2002.07004 Seeds of Life in Space (SOLIS).VII. Discovery of a cold dense methanol blob toward the L1521F VeLLO system Authors: C. Favre, C. Vastel, I. Jimenez-Serra, D. Quénard, P. Caselli, C. Ceccarelli, A. Chacón-Tanarro, F. Fontani, J. Holdship, Y. Oya, A. Punanova, N. Sakai, S. Spezzano, S. Yamamoto, R. Neri, A. López-Sepulcre, F. Alves, R. Bachiller, N. Balucani, E. Bianchi, L. Bizzocchi, C. Codella, E. Caux, M. De Simone, J. Enrique Romero , et al. (18 additional authors not shown) Abstract: …2) K, while the H2 gas density (estimated from the detected CS 2-1 emission and previous CS 5-4 ALMA obs.) is a factor >25 higher than the density in the surrounding environment (n(H2) >107 cm−3). From its compactness, low excitation temperature and high gas density, we suggest that the methanol emission detected with NOEMA is either a cold a… ▽ More A&A Eu
16. arXiv:2002.06925 SMM J04135+10277: A distant QSO-starburst system caught by ALMA Authors: Judit Fogasy, Kirsten K. Knudsen, Guillaume Drouart, Claudia del P. Lagos, Lulu Fan Abstract: …of tracers like the CO emission line is of big importance in order to understand the bigger picture of galaxy evolution. We present Atacama Large Millimeter/submillimeter Array (ALMA) observations of dust continuum, CO(5-4) and CO(8-7) line emission in the quasar--star-forming companion system SMM J04135+10277 (z=2.84). Earlier low-J CO studies of this sys… ▽ More MNRAS; Eu
17. arXiv:2002.06045 No nitrogen fractionation on 600 au scale in the Sun progenitor analogue OMC-2 FIR4 Authors: F. Fontani, G. Quaia, C. Ceccarelli, L. Colzi, C. Favre, C. Kahane, P. Caselli, C. Codella, L. Podio, S. Viti Abstract: We show the first interferometric maps of the 14N/15N ratio obtained with the Atacama Large Millimeter Array (ALMA) towards the Solar-like forming protocluster OMC-2 FIR4. We observed N2H+, 15NNH+, N15NH+ (1-0), and N2D+ (2-1), from which we derive the isotopic ratios 14N/15N and D/H. The target is one of the closest analogues of the environment in which our… ▽ More MNRAS Eu
18. arXiv:2002.06045 No nitrogen fractionation on 600 au scale in the Sun progenitor analogue OMC-2 FIR4 Authors: F. Fontani, G. Quaia, C. Ceccarelli, L. Colzi, C. Favre, C. Kahane, P. Caselli, C. Codella, L. Podio, S. Viti Abstract: We show the first interferometric maps of the 14N/15N ratio obtained with the Atacama Large Millimeter Array (ALMA) towards the Solar-like forming protocluster OMC-2 FIR4. We observed N2H+, 15NNH+, N15NH+ (1-0), and N2D+ (2-1), from which we derive the isotopic ratios 14N/15N and D/H. The target is one of the closest analogues of the environment in which our… ▽ More MNRAS Eu
19. arXiv:2002.05823 Molecular jets from low-mass young protostellar objects Authors: C. -F. Lee Abstract: …those obtained in the optical jets in the later phase of star formation. Future observations of molecular jets with a large sample at high spatial and velocity resolution with ALMA are expected to lead to a breakthrough in our understanding of jets from young stars. ▽ More ARAA EA
20. arXiv:2002.05720 Episodic accretion constrained by a rich cluster of outflows Authors: T. Nony, F. Motte, F. Louvet, A. Plunkett, A. Gusdorf, S. Fechtenbaum, Y. Pouteau, B. Lefloch, S. Bontemps, J. Molet, J. -F. Robitaille Abstract: …number of protostars to statistically investigate molecular outflows in a single, homogeneous region. We used the CO(2-1) and SiO(5-4) line datacubes, taken as part of an ALMA mosaic with a 2000 AU resolution, to search for protostellar outflows, evaluate the influence that the environment has on these outflows' characteristics and put constraints on out… ▽ More Astronomy & Astrophysics Eu
21. arXiv:2002.04816 ALMA Imaging of the CO(7-6) Line Emission in the Submillimeter Galaxy LESS 073 at redshift 4.755⋆ Authors: Yinghe Zhao, Nanyao Lu, Tanio Díaz-Santos, Yu Gao, C. Kevin Xu, Vassilis Charmandaris, Hanae Inami, Dimitra Rigopoulou, David B. Sanders, Jiasheng Huang, Zhong Wang Abstract: …on the CO(7-6) line and its underlying continuum emission of the young submillimeter galaxy LESS 073 at redshift 4.755, using the Atacama Large Millimeter/submillimeter Array (ALMA). At the achieved resolution of ∼1′′.2×0′′.9 (8×6~kpc2), the CO(7-6) emission is largely unresolved (with a deconvolved size of… ▽ More ApJ Other: China
22. arXiv:2002.04040 ALMA reveals the molecular gas properties of 5 star-forming galaxies across the main sequence at 3 < z < 3.5 Authors: Paolo Cassata, Daizhong Liu, Brent Groves, Eva Schinnerer, Eduardo Ibar, Mark Sargent, Alexander Karim, Margherita Talia, Olivier Le Fevre, Lidia Tasca, Brian C. Lemaux, Bruno Ribeiro, Stefano Fiore, Michael Romano, Chiara Mancini, Laura Morselli, Giulia Rodighiero, Lucia Rodriguez-Munoz, Andrea Enia, Vernesa Smolcic Abstract: We present the detection of CO(5-4) with S/N> 7 - 13 and a lower CO transition with S/N > 3 (CO(4-3) for 4 galaxies, and CO(3-2) for one) with ALMA in band 3 and 4 in five main sequence star-forming galaxies with stellar masses 3-6x10^10 M/M_sun at 3 < z < 3.5. We find a good correlation between the total far-infrared luminosity LFIR and the lumi… ▽ More The Astrophysical Journal Eu
23. arXiv:2002.03545 Extended Hα over compact far-infrared continuum in dusty submillimeter galaxies -- Insights into dust distributions and star-formation rates at z∼2 Authors: Chian-Chou Chen, C. M. Harrison, I. Smail, A. M. Swinbank, O. J. Turner, J. L. Wardlow, W. N. Brandt, G. Calistro Rivera, S. C. Chapman, E. A. Cooke, H. Dannerbauer, J. S. Dunlop, D. Farrah, M. J. Michałowski, E. Schinnerer, J. M. Simpson, A. P. Thomson, P. P. van der Werf Abstract: Using data from ALMA and near-infrared (NIR) integral field spectrographs including both SINFONI and KMOS on the VLT, we investigate the two-dimensional distributions of Hα and rest-frame far-infrared (FIR) continuum in six submillimeter galaxies at z∼2. At a similar spatial resolution (∼0.5" FWHM; ∼4.5 kpc at z=2), we find that the ha… ▽ More A&A in press EA
24. arXiv:2001.08147 GG Tau A: gas properties and dynamics from the cavity to the outer disk Authors: N. T. Phuong, A. Dutrey, P. N. Diep, S. Guilloteau, E. Chapillon, E. Di Folco, Y-W. Tang, V. Pietu, J. Bary, T. Beck, F. Hersant, D. T Hoai, J. M. Hure, P. T. Nhung, A. Pierens, P. Tuan-Anh Abstract: We used new ALMA 13CO and C18O(3-2) observations obtained at high angular resolution (∼0.2") together with previous CO(3-2) and (6-5) ALMA data and continuum maps at 1.3 and 0.8 mm in order to determine the gas properties (temperature, density, and kinematics) in the cavity and to a lesser extent in… ▽ More Eu
25. arXiv:1912.10716 Molecular gas in distant brightest cluster galaxies Authors: G. Castignani, F. Combes, P. Salomé, J. Freundlich Abstract: …star formation. We speculate that compact components favor the rapid exhaustion of molecular gas and help to quench the BCGs. Distant star forming BCGs are excellent targets for ALMA and JWST. ▽ More A&A Eu
26. arXiv:2002.12525 An ALMA Survey of H2CO in Protoplanetary Disks Authors: Jamila Pegues, Karin I. Öberg, Jennifer B. Bergner, Ryan A. Loomis, Chunhua Qi, Romane Le Gal, L. Ilsedore Cleeves, Viviana V. Guzmán, Jane Huang, Jes K. Jørgensen, Sean M. Andrews, Geoffrey A. Blake, John M. Carpenter, Kamber R. Schwarz, Jonathan P. Williams, David J. Wilner Abstract: H2CO is one of the most abundant organic molecules in protoplanetary disks and can serve as a precursor to more complex organic chemistry. An ALMA survey of H2CO towards 15 disks covers a range of stellar spectral types, stellar ages, and dust continuum morphologies. H2CO is detected towards 13 disks and tentatively detected towards a 14th. Half of the disks show ring-like structures at or beyond expected CO snowline locations suggesting that H2CO in disks is commonly produced through both gas-phase and CO-ice-regulated grain-surface chemistry. The Astrophysical Journal, 890, 142 (2020)NA
27. arXiv:2002.11897 Missing water in Class I protostellar disks Authors: Daniel Harsono, Magnus Persson, Alyssa Ramos, Nadia Murillo, Luke Maud, Michiel Hogerheijde, Arthur Bosman, Lars Kristensen, Jes Jorgensen, Ted Bergin, Ruud Visser, Joe Mottram, Ewine van Dishoeck Abstract: ALMA and NOEMA millimeter interferometers observed H218O toward five young stellar objects. No H218O emission is detected toward any of our five Class I disks. Water vapor is not abundant in warm protostellar envelopes around Class I protostars. Upper limits to the water vapor column densities in Class I disks are at least two orders magnitude lower than values found in Class 0 disk-like structures. we propose a scenario where water is delivered to the planet-forming disks by ice-covered large dust grains during disk formation. aanda EU
28. arXiv:2002.11600 An extended proto-cluster of galaxies surrounding SPT2349−56 at z=4.3 Authors: Ryley Hill, Scott Chapman, Douglas Scott, Yordanka Apostolovski, Manuel Aravena, Matthieu Bethermin, C. M. Bradford, Carlos de Breuck, Rebecca E. A. Canning, Chenxing Dong, Anthony Gonzalez, Thomas R. Greve, Christopher C. Hayward, Yashar Hezaveh, Katrina Litke, Matt Malkan, Daniel P. Marrone, Cedar Phadke, Cassie Reuter, Justin Spilker, Joaquin D. Vieira, Axel Weiss Abstract: The most actively star-forming proto-clusters known, SPT2349-56 is subject of an extensive ALMA spectroscopic follow-up program to search for far infrared-luminous proto-cluster members via their [CII] 158μm and CO(4-3) line emission. In addition to robustly detecting the 14 previously published galaxies 15 more associated galaxies at z = 4.3 are imaged. this region may be a nearly virialized structure with a mass of (9+/-5) x 10^12Msun. The average SFR density within the region of SPT2349-56 containing single-dish emission (a proper diameter of 720 kpc), assuming spherical symmetry, is roughly 40,000Msun yr-1Mpc-3; this is an order of magnitude greater than the most extreme examples seen in simulations. MNRAS NA
29. arXiv:2002.11053 CO, Water, and Possible Methanol in Eta Carinae Approaching Periastron Authors: Patrick W. Morris, Steven B. Charnley, Michael Corcoran, Martin Cordiner, Augusto Damineli, Jose H. Groh, Theodore R. Gull, Laurent Loinard, Thomas Madura, Andrea Mehner, Anthony Moffat, Maureen Y. Palmer, Gioia Rau, Noel D. Richardson, Gerd Weigelt Abstract: …Carinae, while using ALMA to investigate molecular cloud conditions traced by CO (2-1) in an orbit phase of the massive binary preceding the 2020 periastron. Favoring methanol over a 13CS alternative, the emission originates from hot (Tgas≃ 700 K) material, ∼2′′ (0.02 pc) across, centered on the dust-obscured binary in co… ▽ More ApJ Letters NA
30. arXiv:2002.10209 Over-sized gas clumps in an extremely-metal-poor molecular cloud revealed by ALMA's pc-scale maps Authors: Yong Shi, Junzhi Wang, Zhi-Yu Zhang, Qizhou Zhang, Yu Gao, Luwenjia Zhou, Qiusheng Gu, Keping Qiu, Xiao-Yang Xia, Cai-Na Hao, Yanmei Chen Abstract: …been observed at low metallicity environments, such as in the early Universe and local dwarf galaxies, because of the lack of high spatial resolution maps of gas. We carried out ALMA observations of the carbon monoxide (CO) J=2-1 emission line at 1.4-parsec resolutions of a molecular cloud in DDO 70 at 7% solar metallicity, the most metal-poor galaxy current… ▽ More ApJ in press, Other (China)
31. arXiv:2002.10195 ALMA chemical survey of disk-outflow sources in Taurus (ALMA-DOT): I. CO, CS, CN, and H2CO around DG Tau B Authors: Antonio Garufi, Linda Podio, Claudio Codella, Kazi Rygl, Francesca Bacciotti, Stefano Facchini, Davide Fedele, Anna Miotello, Richard Teague, Leonardo Testi Abstract: As part of a small campaign devoted to the chemical characterization of disk-outflow sources in Taurus, we report on new ALMA Band 6 observations with 20 au resolution toward the embedded Class I star DG Tau B. Images of the continuum emission reveals a 140 AU dust disk with rings and, putatively, a leading spiral arm. The disk, as well as the prominent outflow cavities, are detected in CO, H2CO, CS, and CN while they remain undetected in SO2, HDO, and CH3OH. CS is detected out to 500 au, CN 150AU to 400 au, while H2CO only to 250 au; hence the gas disk extent exceeds dust disk. We infer that the disk emission is optically thick in the inner 50 au. CH3OH/H2CO ratio must be smaller than 2.3, consistent with 1.27 ALMA observed in TW Hya). A&A Eu

Also of note (not new ALMA data)

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D. arXiv:2002.04959 The cosmic abundance of cold gas in the local Universe Authors: Thomas J. Fletcher, Amelie Saintonge, Paula S. Soares, Andrew Pontzen Abstract: …HI 21cm line. The xCOLD GASS CO, molecular gas and cold gas mass functions and Omega_H2 measurements provide constraints for models of galaxy evolution and help to anchor blind ALMA and NOEMA surveys attempting to determine the abundance of molecular gas at high redshifts. ▽ More MNRAS Ey Not ALMA (IRAM30m)
E. arXiv:2002.04342 Envelope-to-disk mass transport in the FUor-type young eruptive star V346 Normae Authors: Á. Kóspál, P. Ábrahám, O. Fehér, F. Cruz-Saenz de Miera, M. Takami Abstract: …are often surrounded by massive envelopes, which replenish the disk material and enable the disk to produce accretion outbursts. We observed the FUor-type star V346 Nor with ALMA at 1.3~mm continuum and in different CO rotational lines. We mapped the density and velocity structure of its envelope and analyzed the results using channel maps, position-velocity… ▽ More published in "Origins: From the Protosun to the First Steps of Life. Proceedings of the International Astronomical Union, Volume 345" Eu
F. arXiv:2002.04224 Star formation in cloud cores -- simulations and observations of dense molecular cores and the formation of solar mass stars Authors: Christoph Federrath Abstract: …clouds. Both theoretical and observational efforts are underway to determine the dominant driving mode of turbulence in different Galactic environments. New observations with ALMA, combined with other instruments such as CARMA, JCMT and the SMA begin to reveal the magnetic field structure of dense cores and protostellar disks, showing highly complex field ge… ▽ More invited review for IAU Symposium S345 (Origins: From the Protosun to the First Steps of Life) Other: Oz
G. arXiv:2002.11036 Planet gap opening across stellar masses Authors: Catriona A. Sinclair, Giovanni P. Rosotti, Attila Juhasz, Cathie J. Clarke Abstract: Annular structures in proto-planetary discs, such as gaps and rings, are now ubiquitously found by high-resolution ALMA observations. Under the hypothesis that they are opened by planets, in this paper we investigate how the minimum planet mass needed to open a gap varies across different stellar host masses and distances from the star. as a result of the fact that discs around low mass stars are geometrically thicker: gap opening around low mass stars can require more massive planets. RT simulations based on ALMA data. February 2020. Eu

-- AlWootten - 2020-02-10

Topic revision: r4 - 2020-03-02, AlWootten

ALMA

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