Greenland Telescope (GLT) Project by Nakamura M., Algaba J. C., Asada K., Chen B., Chen M.-T., Han J., Ho P. H. P., Hsieh S.-N., Huang T., Inoue M., Koch P., Kuo C.-Y., Martin-Cocher P., Matsushita S., Meyer-Zhao Z., Nishioka H., Nystrom G., Pradel N., Pu H.-Y., Raffin P., Shen H.-Y., Tseng C.-Y.

“…Our primary scientific goal is to image a shadow of the supermassive black hole (SMBH) of six billion solar masses in M87 at the center of the Virgo cluster of galaxies. …”
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The type Ia supernova SNLS-03D3bb from a super-Chandrasekhar-mass white dwarf star by Howell, D, Sullivan, M, Nugent, P, Ellis, R, Conley, A, Le Borgne, D, Carlberg, R, Guy, J, Balam, D, Basa, S, Fouchez, D, Hook, I, Hsiao, E, Neill, J, Pain, R, Perrett, K, Pritchet, C

“…These supernovae are thought to be reliable distance indicators because they have a standard amount of fuel and a uniform trigger: they are predicted to explode when the mass of the white dwarf nears the Chandrasekhar mass of 1.4 solar masses (M⊙). Here we show that the high-redshift supernova SNLS-03D3bb has an exceptionally high luminosity and low kinetic energy that both imply a super-Chandrasekhar-mass progenitor. …”

Caught in the rhythm: how satellites settle into a plane around their central galaxy by Welker, C, Dubois, Y, Pichon, C, Devriendt, J, Chisari, N

“…This effect is detected for central galaxies with a stellar mass larger than 10^10 solar masses and found to be strongest for red passive galaxies, while blue galaxies exhibit a weaker trend. …”

Transiting exoplanets from the CoRoT space mission XXIII. CoRoT-21b: a doomed large Jupiter around a faint subgiant star by Paetzold, M, Endl, M, Csizmadia, S, Gandolfi, D, Jorda, L, Grziwa, S, Carone, L, Pasternacki, T, Aigrain, S, Almenara, J, Alonso, R, Auvergne, M, Baglin, A, Barge, P, Bonomo, A, Borde, P, Bouchy, F, Cabrera, J, Cavarroc, C, Cochran, W, Deleuil, M, Deeg, H, Diaz, R, Dvorak, R, Erikson, A

“…The F8IV star is a sub-giant star of 1.29 ± 0.09 solar masses and 1.95 ± 0.2 solar radii. The star and the planet exchange extreme tidal forces that will lead to orbital decay and extreme spin-up of the stellar rotation within 800 Myr if the stellar dissipation is Q*/k2* ≤ 10 7. © 2012 ESO.…”

Luminosity Outburst of a High-mass Young Stellar Object Triggered by the Surrounding Radiation Field by Jun-Ting Liu, Xi Chen, Xiao-Dian Chen, Zhi-Wei Chen, Shi-Min Song, You-Xin Wang, Yan-Kun Zhang, Zhang Zhao, Bin Li, Bo Xia, Zhi-Qiang Shen

“…This source could be an individual supergiant protostar of a few hundred solar masses with periodic pulsation potentially accounting for the observed short-term period in the G24 region.…”
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Inferring Type II-P Supernova Progenitor Masses from Plateau Luminosities by Brandon L. Barker, Evan P. O’Connor, Sean M. Couch

“…Using Bayesian inference methods to locate optimal initial mass function parameters, we find ${M}_{\min }={9.8}_{-0.27}^{+0.37}$ and ${M}_{\max }={24.0}_{-1.9}^{+3.9}$ solar masses for the observational data.…”
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SN 2012cg: EVIDENCE FOR INTERACTION BETWEEN A NORMAL SN Ia AND A NON-DEGENERATE BINARY COMPANION by Marion, G. H., Brown, Peter J., Vinkó, Jozsef, Silverman, Jeffrey M., Sand, David J., Challis, Peter, Kirshner, Robert P., Wheeler, J. Craig, Berlind, Perry, Brown, Warren R., Calkins, Michael L., Camacho, Yssavo, Dhungana, Govinda, Foley, Ryan J., Graham, Melissa L., Howell, D. Andrew, Hsiao, Eric Y., Irwin, Jonathan M., Jha, Saurabh W., Kehoe, Robert, Macri, Lucas M., Maeda, Keiichi, Mandel, Kaisey, McCully, Curtis, Pandya, Viraj, Rines, Kenneth J., Wilhelmy, Steven, Zheng, Weikang, Friedman, Andrew Samuel

“…Comparing the early data with models by Kasen favors a main-sequence companion of about six solar masses. It is possible that many other SN Ia have main-sequence companions that have eluded detection because the emission from the impact is fleeting and faint.…”
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Regulation of black-hole accretion by a disk wind during a violent outburst of V404 Cygni by Muñoz-Darias, T, Casares, J, Mata Sánchez, D, Fender, R, Armas Padilla, M, Linares, M, Ponti, G, Charles, P, Mooley, K, Rodriguez, J

“…The large expelled mass (>10(-8) solar masses) indicates that the outburst was prematurely ended when a sizeable fraction of the outer disk was depleted by the wind, detaching the inner regions from the rest of the disk. …”

Gravitational perturbation in nonlocal modified Tolman VII model by Byon N. Jayawiguna, Piyabut Burikham

“…For relatively small value of $$\beta = 0.01$$ β = 0.01 and the compactness $$ {\mathcal {C}} \lesssim 0.2667$$ C ≲ 0.2667  (with $$M=2.14$$ M = 2.14 solar masses, $$R=11.835$$ R = 11.835 km at $$\alpha =1.4$$ α = 1.4 ), the causality condition and the dominant energy condition (DEC) are satisfied. …”
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Opacity Effects on Pulsations of Main-Sequence A-Type Stars by Joyce A. Guzik, Christopher J. Fontes, Chris Fryer

“…For models of two solar masses and effective temperature 7600 K, opacity enhancements have only a mild effect on pulsations, shifting mode frequencies and/or slightly changing kinetic-energy growth rates. …”
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The DODO Survey II: A Gemini Direct Imaging Search for Substellar and Planetary Mass Companions around Nearby Equatorial and Northern Hemisphere White Dwarfs by Hogan, E, Burleigh, MR, Clarke, F

“…The detection of a planet around a white dwarf would prove that such objects can survive the final stages of stellar evolution and place constraints on the frequency of planetary systems around their progenitors (with masses between 1.5 - 8 solar masses, i.e., early B to mid F). This paper presents the results of a multi-epoch J band common proper motion survey of 23 nearby equatorial and northern hemisphere white dwarfs. …”

About time of hydrogen burning in stellar entrails. New formulas for approximation by V. A. Zakhozhay, S. I. Zabuga

“…Given the fact that the maximum star mass with the sun and zero metal content is limited to 150 solar masses and 500–600, respectively, not all the obtained functional dependencies required to satisfy the requirement of the relationship: Star with large masses are on the main sequence less time. …”
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AGN feedback in the Phoenix cluster by Pinto, C, Bambic, CJ, Sanders, JS, Fabian, AC, McDonald, M, Russell, HR, Liu, H, Reynolds, CS

“…It hosts a powerful starburst of several hundreds of solar masses per year and a large amount of molecular gas in the centre. …”
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Low accretion rates at the AGN cosmic downsizing epoch by Babic, A, Miller, L, Jarvis, M, Turner, T, Alexander, D, Croom, S

“…Results: The Eddington ratios in our sample span the range 10^{-5} to 1, with median log(L_bol/L_Edd)=-2.87, and with typical black hole masses about 10^{8} solar masses. The broad distribution of Eddington ratios is consistent with that expected for AGN samples at low and moderate luminosity. …”

The emission line - radio correlation for radio sources using the 7C Redshift Survey by Willott, C, Rawlings, S, Blundell, K, Lacy, M

“…The most powerful radio sources are accreting at rates close to the Eddington limit of supermassive black holes (~ 10^9 - 10^10 solar masses), whilst lower power sources are accreting at sub-Eddington rates.…”

The black hole in the most massive ultracompact dwarf galaxy M59-UCD3 by Ahn, C, Seth, A, Cappellari, M, al., E

“…The best-fit parameters in the JAM and axisymmetric Schwarzschild models have BHs between 2.5 and 5.9 million solar masses. The triaxial Schwarzschild models point toward a similar BH mass but show a minimum χ 2 at a BH mass of ~0. …”

Sub-millimetre observations of hyperluminous infrared galaxies by Farrah, D, Serjeant, S, Efstathiou, A, Rowan-Robinson, M, Verma, A

“…In all cases the starburst dominates at rest-frame wavelengths >50 microns, with star formation rates >500 solar masses per year. The trend of increasing AGN fraction with increasing IR luminosity seen in IRAS galaxies peaks in HLIRGs, and is not higher than the fraction seen in bright ULIRGs. …”

On the nature and evolution of the unique binary pulsar J1903+0327 by Freire, P, Bassa, C, Wex, N, Stairs, I, Champion, D, Ransom, S, Lazarus, P, Kaspi, V, Hessels, J, Kramer, M, Cordes, J, Verbiest, J, Podsiadlowski, P, Nice, D, Deneva, J, Lorimer, DR, Stappers, B, McLaughlin, M, Camilo, F

“…Radio timing measurements of three post-Keplerian effects yield the most precise measurement of the mass of a millisecond pulsar to date: 1.667 +/- 0.021 solar masses (99.7% confidence limit) (...). Optical spectroscopy of a proposed main sequence counterpart show that its orbital motion mirrors the pulsar's 95-day orbit; being therefore its binary companion (...) …”

Improved dynamical constraints on the masses of the central black holes in nearby low-mass early-type galactic nuclei and the first black hole determination for NGC 205 by Nguyen, D, Seth, A, Neumayer, N, Cappellari, M, al., E

“…The masses of the central BHs in NGC 5102 and NGC 5206 are both below one million solar masses and are consistent with our previous estimates, ${9.12}_{-1.53}^{+1.84}\times {10}^{5}$ M ⊙ and ${6.31}_{-2.74}^{+1.06}\times {10}^{5}$ M ⊙ (3σ errors), respectively. …”

Evidence for a compact object in the aftermath of the extragalactic transient AT2018cow by Pasham, Dheeraj R, Ho, Wynn CG, Alston, William, Remillard, Ronald, Ng, Mason, Gendreau, Keith, Metzger, Brian D, Altamirano, Diego, Chakrabarty, Deepto, Fabian, Andrew, Miller, Jon, Bult, Peter, Arzoumanian, Zaven, Steiner, James F, Strohmayer, Tod, Tombesi, Francesco, Homan, Jeroen, Cackett, Edward M, Harding, Alice

“…The high frequency (rapid timescale) of 224 Hz (4.4 ms) argues for a compact object in AT2018cow, which can be a neutron star or black hole with a mass less than 850 solar masses. If the QPO is the spin period of a neutron star, we can set limits on the star's magnetic field strength. …”
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