Camilla DanielskiInstituto De Astrofisica De Andalucia
Camilla Danielski
PhD
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54
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Publications
Publications (54)
The Laser Interferometer Space Antenna (LISA) will be a transformative experiment for gravitational wave astronomy, and, as such, it will offer unique opportunities to address many key astrophysical questions in a completely novel way. The synergy with ground-based and space-born instruments in the electromagnetic domain, by enabling multi-messenge...
We present a set of recommended best practices for JWST data collection for members of the community focussed on the direct imaging and spectroscopy of exoplanetary systems. These findings and recommendations are based on the early analysis of the JWST Early Release Science Program 1386, "High-Contrast Imaging of Exoplanets and Exoplanetary Systems...
It is clearly established that the Sun has an 11-year cycle that is caused by its internal magnetic field. This cycle is also observed in a sample of M dwarfs. In the framework of exoplanet detection or atmospheric characterisation of exoplanets, the activity status of the host star plays a crucial role, and inactive states are preferable for such...
The direct characterization of exoplanetary systems with high-contrast imaging is among the highest priorities for the broader exoplanet community. As large space missions will be necessary for detecting and characterizing exo-Earth twins, developing the techniques and technology for direct imaging of exoplanets is a driving focus for the community...
The Laser Interferometer Space Antenna (LISA) will detect and characterize ∼104 Galactic Binaries consisting predominantly of two White Dwarfs (WD). An interesting prospect within this population is a third object–another WD star, a Circumbinary Exoplanet (CBP), or a Brown Dwarf (BD)–in orbit about the inner WD pair. We present the first fully Baye...
We present the highest fidelity spectrum to date of a planetary-mass object. VHS 1256 b is a $<$20 M$_\mathrm{Jup}$ widely separated ($\sim$8", a = 150 au), young, brown dwarf companion that shares photometric colors and spectroscopic features with the directly imaged exoplanets HR 8799 c, d, and e. As an L-to-T transition object, VHS 1256 b exists...
We present JWST Early Release Science (ERS) coronagraphic observations of the super-Jupiter exoplanet, HIP 65426 b, with the Near-Infrared Camera (NIRCam) from 2-5 $\mu$m, and with the Mid-Infrared Instrument (MIRI) from 11-16 $\mu$m. At a separation of $\sim$0.82" (87$^{+108}_{-31}$ au), HIP 65426 b is clearly detected in all seven of our observat...
The direct characterization of exoplanetary systems with high contrast imaging is among the highest priorities for the broader exoplanet community. As large space missions will be necessary for detecting and characterizing exo-Earth twins, developing the techniques and technology for direct imaging of exoplanets is a driving focus for the community...
The Laser Interferometer Space Antenna (LISA) will detect and characterize $\sim10^4$ Galactic Binaries consisting predominantly of two White Dwarfs (WD). An interesting prospect within this population is a third object--another WD star, a Circumbinary Exoplanet (CBP), or a Brown Dwarf (BD)--in orbit about the inner WD pair. We present the first fu...
Context. In 2020 the European Space Agency selected Ariel as the next mission to join the space fleet of observatories to study planets outside our Solar System. Ariel will be devoted to the characterisation of 1000 planetary atmospheres in order to understand what exoplanets are made of, how they form, and how they evolve. To achieve the last two...
In 2020 the European Space Agency selected Ariel as the next mission to join the space fleet of observatories to study planets outside our Solar System. Ariel will be devoted to the characterisation of a thousand planetary atmospheres, for understanding what exoplanets are made of, how they formed and how they evolve. To achieve the last two goals...
Ariel has been selected as the next ESA M4 science mission and it is expected to be launched in 2028. During its 4-year mission, Ariel will observe the atmospheres of a large and diversified population of transiting exoplanets. A key factor for the achievement of the scientific goal of Ariel is the selection strategy for the definition of the input...
![Final [X/Fe] ratios as a function of [Fe/H] (red circles). The black...](profile/Camilla-Danielski/publication/353219946/figure/fig2/AS:1163071791861760@1654309332371/Final-X-Fe-ratios-as-a-function-of-Fe-H-red-circles-The-black-empty-circles_Q320.jpg)
![Carbon abundance over Fe vs [Fe/H] from atomic C I lines. Only stars...](profile/Camilla-Danielski/publication/353219946/figure/fig3/AS:1163071791869953@1654309332399/Carbon-abundance-over-Fe-vs-Fe-H-from-atomic-C-I-lines-Only-stars-with-at-least-two-C_Q320.jpg)
![[N/Fe] vs [Fe/H] from molecular bands around 4200Å. The red lines...](profile/Camilla-Danielski/publication/353219946/figure/fig4/AS:1163071791857664@1654309332418/N-Fe-vs-Fe-H-from-molecular-bands-around-4200A-The-red-lines-indicate-the-solar_Q320.jpg)
The Ariel mission will characterise the chemical and thermal properties of the atmospheres of about a thousand exoplanets transiting their host star(s). The observation of such a large sample of planets will allow to deepen our understanding of planetary and atmospheric formation at the early stages, providing a truly representative picture of the...
![Left Panel: stellar statistics distribution with respect to [C/O] and...](publication/355337159/figure/fig2/AS:1163072790110213@1654309570288/Left-Panel-stellar-statistics-distribution-with-respect-to-C-O-and-Mg-Si-from_Q320.jpg)
The goal of the Ariel space mission is to observe a large and diversified population of transiting planets around a range of host star types to collect information on their atmospheric composition. The planetary bulk and atmospheric compositions bear the marks of the way the planets formed: Ariel’s observations will therefore provide an unprecedent...
The goal of the Ariel space mission is to observe a large and diversified population of transiting planets around a range of host star types to collect information on their atmospheric composition. The planetary bulk and atmospheric compositions bear the marks of the way the planets formed: Ariel’s observations will therefore provide an unprecedent...
Laser Interferometer Space Antenna (LISA) will be a transformative experiment for gravitational wave astronomy as it will offer unique opportunities to address many key astrophysical questions in a completely novel way. The synergy with ground-based and other space-based instruments in the electromagnetic domain, by enabling multi-messenger observa...
There are several strong K I lines found in the spectra of M dwarfs, among them the doublet near 7700 AA and another doublet near 12 500 AA. We study these optical and near-infrared doublets in a sample of 324 M dwarfs, observed with CARMENES, the high-resolution optical and near-infrared spectrograph at Calar Alto, and investigate how well the lin...
Studies have shown that remnants of destroyed planets and debris-disk planetesimals can survive the volatile evolution of their host stars into white dwarfs, but detection of intact planetary bodies around white dwarfs are few. Simulations predict that planets in Jupiter-like orbits around stars of $\lt 8 M_\odot$ avoid being destroyed by the stron...
Studies1,2 have shown that the remnants of destroyed planets and debris-disk planetesimals can survive the volatile evolution of their host stars into white dwarfs3,4, but few intact planetary bodies around white dwarfs have been detected5–8. Simulations predict9–11 that planets in Jupiter-like orbits around stars of ≲8 M☉ (solar mass) avoid being...
The James Webb Space Telescope (JWST) and its suite of instruments will offer significant capabilities towards the high contrast imaging of objects such as exoplanets, protoplanetary disks, and debris disks at short angular separations from their considerably brighter host stars. For the JWST user community to simulate and predict these capabilitie...
The goal of the Ariel space mission is to observe a large and diversified population of transiting planets around a range of host star types to collect information on their atmospheric composition. The planetary bulk and atmospheric compositions bear the marks of the way the planets formed: Ariel's observations will therefore provide an unprecedent...
![Fig. 2 Final [X/Fe] ratios as a function of [Fe/H] (red circles). The...](publication/353544399/figure/fig2/AS:1050779020427265@1627536649335/Final-X-Fe-ratios-as-a-function-of-Fe-H-red-circles-The-black-empty-circles_Q320.jpg)
![Fig. 3 Carbon abundance over Fe vs [Fe/H] from atomic C I lines. Only...](publication/353544399/figure/fig3/AS:1050779020435456@1627536649374/Carbon-abundance-over-Fe-vs-Fe-H-from-atomic-C-I-lines-Only-stars-with-at-least-two-C_Q320.jpg)
![Fig. 4 [N/Fe] vs [Fe/H] from molecular bands around 4200Å4200˚4200Å....](publication/353544399/figure/fig4/AS:1050779020435457@1627536649401/N-Fe-vs-Fe-H-from-molecular-bands-around-4200A42004200A-The-red-lines-indicate-the_Q320.jpg)
The Ariel mission will characterise the chemical and thermal properties of the atmospheres of about a thousand exoplanets transiting their host star(s). The observation of such a large sample of planets will allow to deepen our understanding of planetary and atmospheric formation at the early stages, providing a truly representative picture of the...
We provide here tables of stellar limb-darkening coefficients (LDCs) for the Ariel ESA M4 space mission. These tables include LDCs corresponding to different wavelength bins and white bands for the NIRSpec, AIRS-Ch0 and AIRS-Ch1 spectrographs, and those corresponding to the VISPhot, FGS1 and FGS2 photometers. The LDCs are calculated with the open-s...
We provide here tables of stellar limb-darkening coefficients (LDCs) for the Ariel ESA M4 space mission. These tables include LDCs corresponding to different wavelength bins and white bands for the NIRSpec, AIRS-Ch0 and AIRS-Ch1 spectrographs, and those corresponding to the VISPhot, FGS1 and FGS2 photometers. The LDCs are calculated with the open-s...
Ariel, the Atmospheric Remote-sensing Infrared Exoplanet Large-survey, was adopted as the fourth medium-class mission in ESA's Cosmic Vision programme to be launched in 2029. During its 4-year mission, Ariel will study what exoplanets are made of, how they formed and how they evolve, by surveying a diverse sample of about 1000 extrasolar planets, s...
Ariel has been selected as the next ESA M4 science mission and it is expected to be launched in 2028. During its 4-year mission, Ariel will observe the atmospheres of a large and diversified population of transiting exoplanets. A key factor for the achievement of the scientific goal of Ariel is the selection strategy for the definition of the input...
Gravitational waves have opened a new observational window through which some of the most exotic objects in the universe, as well as some of the secrets of gravitation itself, can now be revealed. Among all these new discoveries, we recently demonstrated[Formula: see text] that space-based gravitational wave observations will have the potential to...
Gravitational waves have opened a new observational window through which some of the most exotic objects in the Universe, as well as some of the secrets of gravitation itself, can now be revealed. Among all these new discoveries, we recently demonstrated [N. Tamanini & C. Danielski, Nat. Astron., 3(9), 858 (2019)] that space-based gravitational wav...
Aims. We explore the prospects for the detection of giant circumbinary exoplanets and brown dwarfs (BDs) orbiting Galactic double white dwarfs (DWDs) binaries with the Laser Interferometer Space Antenna (LISA).
Methods. By assuming an occurrence rate of 50%, motivated by white dwarf pollution observations, we built a Galactic synthetic population o...
We explore here the prospects for detection of both giant circumbinary exoplanets, and brown dwarfs orbiting Galactic double white dwarfs binaries (DWDs) with the LISA mission. By assuming an occurrence rate of 50%, motivated by white dwarf pollution observations, we build a Galactic synthetic population of P-type giant exoplanets and brown dwarfs...
So far, around 4,000 exoplanets have been discovered orbiting a large variety of stars. Owing to the sensitivity limits of the currently used detection techniques, these planets populate zones restricted either to the solar neighbourhood or towards the galactic bulge. This selection problem prevents us from unveiling the true galactic planetary pop...
We present here a reanalysis of the Spitzer Space Telescope phase curves of the hot Jupiter WASP43 b, using the wavelet pixel-Independent Component Analysis, a blind signal-source separation method. The data analyzed were recorded with the InfraRed Array Camera and consisted of two visits at 3.6 $\mu$m, and one visit at 4.5 $\mu$m, each visit cover...
To date more than 3500 exoplanets have been discovered orbiting a large variety of stars. Due to the sensitivity limits of the currently used detection techniques, these planets populate zones restricted either to the solar neighbourhood or towards the Galactic bulge. This selection problem prevents us from unveiling the true Galactic planetary pop...
Thousands of exoplanets have now been discovered with a huge range of masses, sizes and orbits: from rocky Earth-like planets to large gas giants grazing the surface of their host star. However, the essential nature of these exoplanets remains largely mysterious: there is no known, discernible pattern linking the presence, size, or orbital paramete...
The Mid-Infrared instrument (MIRI) on board the James Webb Space Telescope will perform the first ever characterization of young giant exoplanets observed by direct imaging in the 5-28 microns spectral range. This wavelength range is key for both determining the bolometric luminosity of the cool known exoplanets and for accessing the strongest ammo...
The Mid-Infrared instrument (MIRI) on board the James Webb Space Telescope will perform the first ever characterization of young giant exoplanets observed by direct imaging in the 5-28 µm spectral range. This wavelength range is key for both determining the bolometric luminosity of the cool known exoplanets and for accessing the strongest ammonia b...
Context. The first Gaia data release unlocked the access to photometric information for 1.1 billion sources in the G -band. Yet, given the high level of degeneracy between extinction and spectral energy distribution for large passbands such as the Gaia G -band, a correction for the interstellar reddening is needed in order to exploit Gaia data.
Aim...
To obtain accurate mass measurements for cold planets discovered by microlensing, it is usually necessary to combine light curve modeling with at least two lens mass-distance relations. Often, a constraint on the Einstein ring radius measurement is obtained from the caustic crossing time: This is supplemented by secondary constraints such as precis...
We present new empirical Colour-Colour and Effective Temperature-Colour Gaia Red Clump calibrations. The selected sample takes into account high photometric quality, good spectrometric metallicity, homogeneous effective temperatures and low interstellar extinctions. From those calibrations we developed a method to derive the absolute magnitude, tem...
The discovery of almost 2000 exoplanets has revealed an unexpectedly diverse
planet population. Observations to date have shown that our Solar System is
certainly not representative of the general population of planets in our Milky
Way. The key science questions that urgently need addressing are therefore:
What are exoplanets made of? Why are plane...
The discovery of almost two thousand exoplanets has revealed an unexpectedly diverse planet population. We see gas giants in few-day orbits, whole multi-planet systems within the orbit of Mercury, and new populations of planets with masses between that of the Earth and Neptune—all unknown in the Solar System. Observations to date have shown that ou...
The science of extra-solar planets is one of the most rapidly changing areas of astrophysics and since 1995 the number of planets known has increased by almost two orders of magnitude. A combination of ground-based surveys and dedicated space missions has resulted in 560-plus planets being detected, and over 1200 that await confirmation. NASA's Kep...
We present microlens parallax measurements for 21 (apparently) isolated
lenses observed toward the Galactic bulge that were imaged simultaneously from
Earth and Spitzer, which was ~1 AU West of Earth in projection. We combine
these measurements with a kinematic model of the Galaxy to derive distance
estimates for each lens, with error bars that are...
Astonishingly for a discipline that did not even exist twenty years ago, the science of Exoplanets has arguably evolved exponentially, delivering transformational science. Planetary formation theories had to be completely revisited. The critical step yet to take is the determination of the chemical composition of the atmospheres of these exotic wor...
We present here new transmission spectra of the hot Jupiter HD-189733b using the SpeX instrument on the NASA Infrared Telescope Facility. We obtained two nights of observations where we recorded the primary transit of the planet in the J, H, and K bands simultaneously, covering a spectral range from 0.94 to 2.42 μm. We used Fourier analysis and oth...
The NASA Kepler mission is delivering groundbreaking results, with an
increasing number of Earth-sized and moon-sized objects been discovered. A high
photometric precision can be reached only through a thorough removal of the
stellar activity and the instrumental systematics. We have explored here the
possibility of using non-parametric methods to...
We present here new transmission spectra of the hot Jupiter HD-189733b using
the SpeX instrument on the NASA Infrared Telescope Facility. We obtained two
nights of observations where we recorded the primary transit of the planet in
the J-, H- and K-bands simultaneously, covering a total spectral range from
0.94 to 2.4 micron. We used Fourier analys...
A dedicated mission to investigate exoplanetary atmospheres represents a
major milestone in our quest to understand our place in the universe by placing
our Solar System in context and by addressing the suitability of planets for
the presence of life. EChO -the Exoplanet Characterisation Observatory- is a
mission concept specifically geared for thi...
We present here ground-based transmission spectroscopy of the hot
jupiter HD-189733b using the SpeX instrument on the NASA Infrared
Telescope Facility. We obtained two nights of observation of the primary
transit for the z, J, H band and two nights for the K, L band. The data,
acquired simultaneously over each night, cover a total spectral range
fr...
Among the 550-plus exoplanets discovered to date, an ever-growing sample
of the transiting variety present themselves as good targets for further
characterisation. Using transmission (when the planet eclipses its host
star) and emission (the day-side thermal emission of the exoplanet)
spectroscopy it is possible to study the atmospheric composition...
The science of extra-solar planets is one of the most rapidly changing areas of astrophysics and since 1995 the number of planets known has increased by almost two orders of magnitude. A combination of ground-based surveys and dedicated space missions has resulted in 560-plus planets being detected, and over 1200 that await confirmation. NASA's Kep...
Projects
Projects (3)
The achievement of scientific objective of Ariel will depend on the input target list that has to cover the range of relevant stellar/planet parameters in a statistically significant way.
A meaningful choice of the targets requires an accurate knowledge of the stellar properties, that need to be obtained well before the launch.
This project wants to precisely and uniformly determine the fundamental properties of host stars in the Ariel Reference Sample.
Study on the population of exoplanets that can be detected through gravitational waves astronomy within the Milky Way and in the LMC.
Characterization of young exoplanets with the JWST