output
20132025
most citedThe size, shape, density and ring of the dwarf planet Haumea from a stellar occultation

258 citations

13 papers

astro-ph.EP2025

A high geometric albedo and small size of the Haumea cluster member (24835) 1995 SM55 from a stellar occultation and photometric observations

J. L. Ortiz, N. Morales, B. Sicardy +98

Trans-Neptunian objects (TNOs) are among the most ancient bodies of the solar system. Understanding their physical properties is key to constraining their origin and the evolution…

astro-ph.EP2022★ 13 cited

The multichord stellar occultation on 2019 October 22 by the trans-Neptunian object (84922) 2003 VS

M. Vara-Lubiano, G. Benedetti-Rossi, P. Santos-Sanz +60

We predicted, observed, and analyzed the multichord stellar occultation of the Second Gaia Data Release (Gaia DR2) source 3449076721168026624 (m = 14.1 mag) by the plutino obje…

astro-ph.EP2020★ 9 cited

The 2017 May 20 stellar occultation by the elongated centaur (95626) 2002 GZ

P. Santos-Sanz, J. L. Ortiz, B. Sicardy +56

We predicted a stellar occultation of the bright star Gaia DR1 4332852996360346368 (UCAC4 385-75921) (m= 14.0 mag) by the centaur 2002 GZ for 2017 May 20$^{\rm th}…

astro-ph.EP2020★ 258 cited

The size, shape, density and ring of the dwarf planet Haumea from a stellar occultation

J. L. Ortiz, P. Santos-Sanz, B. Sicardy +90

Among the four known transneptunian dwarf planets, Haumea is an exotic, very elongated, and fast rotating body. In contrast to the other dwarf planets, its size, shape, albedo, and…

astro-ph.EP2020★ 23 cited

The large Trans-Neptunian Object 2002 TC from combined stellar occultation, photometry and astrometry data

J. L. Ortiz, P. Santos-Sanz, B. Sicardy +78

On 28th January 2018, the large Trans-Neptunian Object (TNO) 2002TC302 occulted a m15.3 star with ID 130957813463146112 in the Gaia DR2 stellar catalog. 12 positive occultati…

astro-ph.HE2019★ 53 cited

The long-lived Type IIn SN 2015da: Infrared echoes and strong interaction within an extended massive shell

L. Tartaglia, A. Pastorello, J. Sollerman +41

In this paper we report the results of the first four years of spectroscopic and photometric monitoring of the Type IIn supernova SN 2015da (also known as PSN J13522411+39412…

astro-ph.SR2019★ 129 cited

Luminous Red Novae: Stellar Mergers or Giant Eruptions?

A. Pastorello, E. Mason, S. Taubenberger +36

We present extensive datasets for a class of intermediate-luminosity optical transients known as "luminous red novae" (LRNe). They show double-peaked light curves, with an initial…

astro-ph.EP2019★ 47 cited

Pluto's lower atmosphere and pressure evolution from ground-based stellar occultations, 1988-2016

E. Meza, B. Sicardy, M. Assafin +167

Context. Pluto's tenuous nitrogen (N2) atmosphere undergoes strong seasonal effects due to high obliquity and orbital eccentricity, and has been recently (July 2015) observed by th…

astro-ph.SR2018★ 12 cited

SNhunt151: an explosive event inside a dense cocoon

N. Elias-Rosa, S. Benetti, E. Cappellaro +20

SNhunt151 was initially classified as a supernova (SN) impostor (nonterminal outburst of a massive star). It exhibited a slow increase in luminosity, lasting about 450 d, followed…

astro-ph.SR2015★ 24 cited

Massive stars exploding in a He-rich circumstellar medium - VIII. PSN J07285387+3349106, a highly reddened supernova Ibn

A. Pastorello, L. Tartaglia, N. Elias-Rosa +16

We present spectroscopic and photometric observations for the Type Ibn supernova (SN) dubbed PSN J07285387+3349106. Using data provided by amateur astronomers, we monitored the pho…

astro-ph.SR2015★ 80 cited

Massive stars exploding in a He-rich circumstellar medium - IX. SN 2014av, and characterization of Type Ibn SNe

A. Pastorello, X. -F. Wang, F. Ciabattari +18

We present spectroscopic and photometric data of the Type Ibn supernova (SN) 2014av, discovered by the Xingming Observatory Sky Survey. Stringent pre-discovery detection limits ind…

astro-ph.SR2015★ 15 cited

Optical observations of a SN 2002cx-like peculiar supernova SN 2013en in UGC 11369

Zheng-Wei Liu, Jujia Zhang, Fabrizio Ciabattari +7

We present optical observations of a SN 2002cx-like supernova SN 2013en in UGC 11369, spanning from a phase near maximum light (t= +1 d) to t= +60 d with respect to the R-band maxi…

astro-ph.CO2013★ 104 cited

The Very Young Type Ia Supernova 2013dy: Discovery, and Strong Carbon Absorption in Early-Time Spectra

WeiKang Zheng, Jeffrey M. Silverman, Alexei V. Filippenko +20

The Type Ia supernova (SN Ia) 2013dy in NGC 7250 (d ~ 13.7 Mpc) was discovered by the Lick Observatory Supernova Search. Combined with a prediscovery detection by the Italian Super…