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The total number of true, likely and possible planetary nebulae (PN) now known in the Milky Way is nearly 3000, double the number known a decade ago. The new discoveries are a legacy of the recent availability of wide field, narrowband…

Solar and Stellar Astrophysics · Physics 2015-05-18 David J. Frew , Quentin A. Parker

We present results from 2MASS JKs photometry on the physical reality of recently reported globular cluster (GC) candidates in the Milky Way (MW) bulge. We relied our analysis on photometric membership probabilities that allowed us to…

Astrophysics of Galaxies · Physics 2018-04-04 Andrés E. Piatti

We present orbits and their properties for 152 globular clusters of the Milky Way galaxy obtained using average Gaia DR2 proper motions and other astrometric data from the list of Vasiliev (2019). For orbit integrating we have used the…

Astrophysics of Galaxies · Physics 2021-09-08 A. T. Bajkova , V. V. Bobylev

Large and publicly available astronomical archives open up new possibilities to search and study Solar System objects. However, advanced techniques are required to deal with the large amounts of data. These unbiased surveys can be used to…

The occurrence of multiple stars, dominantly binaries, is studied using the \textit{Gaia}-ESA DR2 catalogue. We apply the optimized statistical method that we previously developed for the analysis of 2D patterns. The field of stars is…

Astrophysics of Galaxies · Physics 2022-01-05 Petr Zavada , Karel Píška

The Wide-field Infrared Survey Explorer (WISE) is a powerful tool for finding nearby brown dwarfs and searching for new planets in the outer solar system, especially with the incorporation of NEOWISE and NEOWISE-Reactivation data. So far,…

Routinely operating since July 2012, the APACHE survey has celebrated its second birthday. While the main goal of the Project is the detection of transiting planets around a large sample of bright, nearby M dwarfs in the northern…

Wide binaries made up of two white dwarfs (WDs) receive far less attention than their tight counterparts. However, our tests using the binary population synthesis code {\tt StarTrack} indicate that, for any set of reasonable initial…

Solar and Stellar Astrophysics · Physics 2015-06-11 Jeff J. Andrews , Marcel A. Agüeros , Krzysztof Belczynski , Saurav Dhital , S. J. Kleinman , Andrew A. West

In our effort to complete the census of low-mass stars and brown dwarfs in the immediate Solar Neighborhood, we present spectra, photometry, proper motions, and distance estimates for forty-two low-mass star and brown dwarf candidates…

We correct the observed Milky Way satellite luminosity function for luminosity bias using published completeness limits for the Sloan Digital Sky Survey DR5. Assuming that the spatial distribution of Milky Way satellites tracks the subhalos…

Astrophysics · Physics 2009-11-13 Erik J. Tollerud , James S. Bullock , Louis E. Strigari , Beth Willman

OB-stars have the highest luminosities and strongest stellar winds of all stars, which enables them to interact strongly with their surrounding ISM, thus creating bow shocks. These offer us an ideal opportunity to learn more about the ISM.…

Astrophysics · Physics 2009-11-11 Daniel Brown , Dominik J. Bomans

In order to characterize 22 new globular cluster (GC) candidates in the Galactic bulge, we present their colour-magnitude diagrams (CMDs) and Ks-band luminosity functions (LFs) using the near-infrared VVV database as well as Gaia-DR2 proper…

We report the results of our search for pulsating subdwarf B stars in Full Frame Images collected during Year 2 of the TESS mission and covering the northern ecliptic hemisphere. This is a continuation of our effort we presented in Paper I.…

Solar and Stellar Astrophysics · Physics 2021-05-05 A. S. Baran , S. K. Sahoo , S. Sanjayan , J. Ostrowski

The 6dF Galaxy Survey is measuring around 150000 redshifts and 15000 peculiar velocities from galaxies over the southern sky at |b|>10 degrees. When complete, it will be the largest survey of its kind by more than an order of magnitude.…

Astrophysics · Physics 2009-11-11 D. Heath Jones , Will Saunders , Mike Read , Matthew Colless

About 3,500 planetary nebulae (PNe) are currently known in the Milky Way, which shows a great discrepancy with the expected number for these objects, regardless of the reference used, $33-59 \times 10^{3}$. The same holds for symbiotic…

Astrophysics of Galaxies · Physics 2024-04-10 Giovanna Liberato , Denise R. Gonçalves , Luis A. Gutiérrez-Soto , Stavros Akras

The $\lambda$ Boo stars are chemically peculiar A-type stars whose abundance anomalies are associated with the accretion of metal-poor material. We searched for $\lambda$ Boo stars in the southern hemisphere in a targeted spectroscopic…

Solar and Stellar Astrophysics · Physics 2020-08-19 Simon J. Murphy , Richard O. Gray , Christopher J. Corbally , Charles Kuehn , Timothy R. Bedding , Josiah Killam

We present an updated version of the spectroscopic catalogue of white dwarf-main sequence (WDMS) binaries from the Sloan Digital Sky Survey (SDSS). We identify 939 WDMS binaries within the data releases (DR) 9-12 of SDSS plus 40 objects…

Solar and Stellar Astrophysics · Physics 2016-03-23 A. Rebassa-Mansergas , J. J. Ren , S. G. Parsons , B. T. Gaensicke , M. R. Schreiber , E. Garcia-Berro , X. -W. Liu , D. Koester

[ABRIDGED] AIMS: The MONOS project is collecting information and studying O-type spectroscopic binaries with delta > -20 deg. In this 2nd paper, we tackle the study of the 35 single-line spectroscopic binary (SB1) systems identified in the…

Solar and Stellar Astrophysics · Physics 2021-11-03 E. Trigueros Páez , R. H. Barbá , I. Negueruela , J. Maíz Apellániz , S. Simón-Díaz , G. Holgado

The MACHO Project generated two-color photometric lightcurves for 73 million stars in the LMC, SMC, and the galactic bulge during its 8 years of observing. This photometry, along with all images and a catalog of LMC variable stars, is now…

Astrophysics · Physics 2019-08-14 R. A. Allsman , T. S. Axelrod

The LIGO-Virgo gravitational-wave (GW) observation unveiled the new population of black holes (BHs) that appears to have an extended mass spectrum up to around $70M_\odot$, much heavier than the previously-believed mass range ($\sim…

Astrophysics of Galaxies · Physics 2021-03-26 Satoshi Toki , Masahiro Takada