Results 21 to 30 of about 5,702,760 (334)

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, N. Matsunaga, T. Tanabé, Y. Nakada, D. Kato, T. Nagayama, C. Nagashima, M. Kurita, Y. Nakajima, P. Whitelock, J. Menzies, M. Feast, T. Nagata, M. Tamura, Hidehiko Nakaya Astronomical Institute, Graduate School of Science, T. University, A. Aoba, Aoba-ku, Sendai, Miyagi, Japan., D. O. Astronomy, School of Materials Science, T. U. O. Tokyo, Hongo, Bunkyo-ku, Tokyo, I. O. Astronomy, Mitaka, Center for Low Carbon Society Strategy, Japan Science, Technology Agency, S. Plaza, Yonban-cho, Chiyoda-ku, Department of Materials Science, Engineering, Kagoshima University, Korimoto, Kagoshima, D. O. Astrophysics, Nagoya University, Chikusa-ku, Nagoya, Kyoto University, Kitashirakawa-Oiwake-cho, Sakyo-ku, Kyoto, Hitotsubashi University, Naka, Kunitachi, U. C. Town, Rondebosch, S. Africa, South African astronomical Observatory, Observatory, N. A. O. O. Japan, A. Center   +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, M. Benisty, M. Benisty, J. D. Boer, C. Manara, J. Bouvier, C. Dominik, C. Ginski, C. Ginski, R. Loomis, A. S. Aguilar   +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, E. Rosolowsky, Yixian Cao, A. Bolatto, S. Sánchez, D. Utomo, D. Colombo, V. Kalinova, T. Wong, L. Blitz, S. Vogel, Jason L. Loeppky, R. García-Benito   +12 more
semanticscholar   +1 more source

Direct-imaging Discovery of a Substellar Companion Orbiting the Accelerating Variable Star HIP 39017 [PDF]

Astronomical Journal
We present the direct-imaging discovery of a substellar companion (a massive planet or low-mass brown dwarf) to the young, γ Doradus (γ Dor)-type variable star HIP 39017 (HD 65526). The companion’s SCExAO/CHARIS JHK (1.1–2.4 μm) spectrum and Keck/NIRC2 L′
T. Tobin, T. Currie, Yiting Li, J. Chilcote, Timothy D. Brandt, B. Lacy, M. Kuzuhara, Maria Vincent, M. El Morsy, V. Deo, Jonathan P. Williams, O. Guyon, J. Lozi, S. Vievard, N. Skaf, K. Ahn, Tyler Groff, N. Kasdin, T. Uyama, M. Tamura, A. Gibbs, Briley L. Lewis, R. Bowens-Rubin, M. Salama, Qier An, Minghan Chen   +25 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, T. Jayasinghe, K. Stanek, C. Kochanek, T. Thompson, B. Shappee, T. Holoien, J. Prieto, S. Dong, W. Giles   +9 more
semanticscholar   +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, M. Graham, S. Djorgovski, M. Catelán, A. Mahabal, G. Torrealba, D. García-Álvarez, C. Donalek, J. Prieto, R. Williams, S. Larson, E. Christensen, V. Belokurov, Sergey E. Koposov, E. Beshore, A. Boattini, A. Gibbs, R. Hill, R. Kowalski, J. Johnson, F. Shelly   +20 more
semanticscholar   +1 more source

On the irregular variations in the light curves of RY Vul

Odessa Astronomical Publications, 2018
The star RY Vul according General Catalogue of Variable Star (GCVS) is RR Lyr variable, but period and initial epoch are unknown. To determine these parameters the photometric observations during several seasons in 201 1-201 7 of the variable star RY Vul
S. N. Udovichenko, L. E. Keir
doaj   +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

GENERAL CATALOGUE OF VARIABLE STARS: CURRENT STATUS AND NEW NAME-LISTS

Odessa Astronomical Publications, 2010
A short history of variable-star catalogs is presented. After the second World War, the International Astronomical Union asked astronomers of the Soviet Union to become responsible for variable-star catalogs. Currently, the catalog is kept electronically
N. N. Samus, E. V. Kazarovets, N. N. Kireeva, E. N. Pastukhova, O. V. Durlevich   +4 more
doaj   +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