A near infrared variable star survey in the Magellanic Clouds: The Small Magellanic Cloud data [PDF]
Monthly notices of the Royal Astronomical Society, 2018 A very long term near-infrared variable star survey towards the Large and Small Magellanic Clouds was carried out using the 1.4m InfraRed Survey Facility at the South African Astronomical Observatory.
Y. Ita +58 more
semanticscholar +1 more source
Variable Outer Disk Shadowing around the Dipper Star RXJ1604.3–2130 [PDF]
Astrophysical Journal, 2018 Low brightness dips have recently been observed in images of protoplanetary disks, and they are believed to be shadows by the inner disk. We present VLT/SPHERE polarimetric differential imaging of the transition disk around the dipper star RX J1604.3 ...
Paola Pinilla +10 more
semanticscholar +1 more source
The EDGE-CALIFA survey: exploring the star formation law through variable selection [PDF]
Monthly notices of the Royal Astronomical Society, 2019 We present a multilinear analysis to determine the significant predictors of star formation in galaxies using the combined EDGE-CALIFA sample of galaxies.
B. Dey +12 more
semanticscholar +1 more source
The ASAS-SN Catalog of Variable Stars X: Discovery of 116,000 New Variable Stars Using g-band Photometry [PDF]
Monthly notices of the Royal Astronomical Society, 2022 The All-Sky Automated Survey for Supernovae (ASAS-SN) is the first optical survey to monitor the entire sky, currently with a cadence of ≲ 24 hours down to g ≲ 18.5 mag. ASAS-SN has routinely operated since 2013, collecting ∼ 2,000 to over 7,500 epochs
C. Christy +9 more
semanticscholar +1 more source
The Origin of the Mass-Metallicity relation: an analytical approach [PDF]
, 2010 The existence of a mass-metallicity (MZ) relation in star forming galaxies at all redshift has been recently established. We aim at studying some possible physical mechanisms contributing to the MZ relation by adopting analytical solutions of chemical ...
Bullock +50 more
core +1 more source
THE CATALINA SURVEYS PERIODIC VARIABLE STAR CATALOG [PDF]
, 2014 We present ∼47,000 periodic variables found during the analysis of 5.4 million variable star candidates within a 20,000 deg2 region covered by the Catalina Surveys Data Release-1 (CSDR1).
A. Drake +20 more
semanticscholar +1 more source
Catching a star before explosion: the luminous blue variable progenitor of SN 2015bh [PDF]
Astronomy & Astrophysics, 2017 In this paper we analyse the pre-explosion spectrum of SN2015bh by performing radiative transfer simulations using the CMFGEN code. This object has attracted significant attention due to its remarkable similarity to SN2009ip in both its pre- and post ...
I. Boian, J. Groh
semanticscholar +1 more source
The pulsating variable star population in DDO210 [PDF]
, 2015 We have probed the pulsating variable star content of the isolated Local Group dwarf galaxy, DDO210 (Aquarius), using archival Advanced Camera for Surveys/$Hubble$ $Space$ $Telescope$ imaging in the F475W and F814W passbands.
A. Ordoñez, A. Sarajedini
semanticscholar +1 more source
New magnetic chemically peculiar stars and candidates in the ATLAS First Catalog of Variable Stars [PDF]
, 2021 The number of known variable stars has increased by several magnitudes over the last decade, and automated classification routines are becoming increasingly important to cope with this development. Here we show that the "upside-down CBH variables", which were proposed as a potentially new class of variable stars by Heinze et al.
arxiv +1 more source
SN 2015bh: NGC 2770's 4th supernova or a luminous blue variable on its way to a Wolf-Rayet star? [PDF]
, 2016 Very massive stars in the final phases of their lives often show unpredictable outbursts that can mimic supernovae, so-called, "SN impostors", but the distinction is not always straigthforward.
C. Thöne +25 more
semanticscholar +1 more source